Showing posts with label Discharge. Show all posts
Showing posts with label Discharge. Show all posts

Sunday, May 8, 2016

Electrical Discharge Machine Buying Tips

Electrical Discharge Machine Getting Tips


Electrical Discharge Machining or EDM is electrical equipment or a machining method that is utilised for challenging metallic materials. It is primarily utilized on challenging metals that can not be processed by conventional techniques and strategies. Electrical Discharge Machining, however, only functions with metallic objects that are electrically conductive. EDM can reduce tiny unusual shaped angles, complicated curves and outlines in many types of really difficult steels and exotic metals like titanium and carbide just to name a handful of.


1. How It Works


Sometime referred to as spark machining or spark eroding. Electrical discharge machining is a technique of removing material by a series of swiftly recurring electric discharges among the cutting tool and the work piece, in the presence of an energetic electrical field. The EDM equipment is guided quite close along the desired path but it does not touch the metallic piece. Rather the sparks create a series of micro-crates on the metallic piece and eliminate supplies along the desired path by melting and vaporizing them. The wasted particles then are washed away by the continuous flushing of dielectric fluid.


two. Decide on Your Variety Of Machine


Initial you ought to specify what type of Electrical Discharge machine you are going to make use of for there are two sorts of Electrical discharge machining equipment on the market right now. The wire and the probe or die sinker Electronic Discharge Machine. If your firm is into processing complex geometric shapes then the probe or die sinker EDM is the tool that you should use and buy. This type of Electrical Discharge Machining tool makes use of a machine graphite or copper electrode to erode the preferred shape into the metallic supplies. Alternatively, if your business is more into assembly component cutting then the wire EDM is the very best machining method to be employed. In a wire EDM a hole have to be initial drilled into the material then a wire will be fed by means of it to cut the preferred shapes.


three. Scale Of Production


The subsequent issue to consider about is the scale of production that your business will be manufacturing. If it is on a big scale production then you should feel of purchasing larger Electrical discharge machining Equipments. There are promoting companies that give out discount if you will be getting a huge quantity of EMD tools. Of course, if your firm is into modest amounts of production and will be using EDM tools on a one time usage basis only, then you can just have your metallic pieces cut-out by EDM companies. It is a lot cheaper to just spend for the service charge than purchasing your own Electrical discharge machining Tools.


4. Ask Your self:


– What kind of goods will I be creating?
– How many products will I be generating?
– Do I have the correct quantity of funds and sources to fabricate this solution?


5. Obtaining The Ideal Deal


You can locate quite a few businesses that sell various kinds of Electrical discharge machining tools on the internet. So just before going to the nearest EDM retailers in your locality, why not check out the net 1st, it could save you time, funds and the hassle of driving out in the city. And with the tight competitors of on-line organizations you can even find a discounted cost for new EDM equipments on-line. There are also e-commerce internet sites that provide second hand and fully refurbished electrical discharge machining tools on the net. So if you are having monetary concerns but actually need to purchase 1, second hand EMD equipment may possibly operate fine for you.



For far more fantastic electrical discharge machine associated articles and resources check out http://www.edmhq.com

Wednesday, December 3, 2014

Electrical Discharge Machining EDM




Credit: IDES – The Plastics Web® – www.ides.com/articles/processing/injection-molding/2009/electrical-discharge-machining.asp.
Video Rating: 4 / 5





Lecture Series on Manufacturing Processes II by Prof.A.B.Chattopadhyay, Prof. A. K. Chattopadhyay and Prof. S. Paul,Division of Mechanical Engineering, IIT…

Sunday, November 2, 2014

Cool Wire Electrical Discharge Machining pictures

Some cool wire electrical discharge machining pictures:


Image from page 20 of “Electrical news and engineering” (1891)


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Identifier: electricalnewsen20donm
Title: Electrical news and engineering
Year: 1891 (1890s)
Authors:
Subjects: Electrical engineering
Publisher: Don Mills, Ont. [etc.] Southam-Maclean Publications


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turers merchandise, but this is the cliloride.So extended as a liattery can be charged at about this rate (in orderto compensate for the discharge), tlien it is tlie suitable batteryto choose. 1 might have stated, A battery capable of maintaining1,400 for 1 hour would preserve a steady generator load of GOOami)eres with a battery capable of becoming discharged at the aboverate and charged at 700 jimperes, becjuise 700 amjieres is a safecharging price for :i battery cnp:ibb of discharging J,400 for onehour. CANADIAN RLECTftlCAL NEWS five in tlie load above or under this fixed geuorator will thereforechange the stress on the carbon piles, resulting in wide varia-tion in their speak to resistance. Advantage is taken of this resistance variation in the carbonpiles to handle the field excitation of the booster via theintermediary of a small exciter, the field of which is the middlewire of a 3 wire program as shown in diagram in Fig. 2. Inexplanation of the diagram, if the pull exerted by the solenoid


Text Appearing Right after Image:
desired amount by varying the tension of the spring at the endof the lever which regulates the stress on the carbon piles.This adjustment is created by a tiny haudwheel and may possibly bealtered from time to time to meet any considerable alterations inthe nature of the load, so that the battery can be either floating,providing continuous pealc discharge, or being charged according tothe adjustment, while constantly automatically taking the moment-ary fluctuations of the load. The output of the exciter is almost infinitesimally modest ascompared with the booster it controls. For a 500 k.w. booster itwould only be 2..five k.w., and it is naturally a quicker operationto reverse a machine for 2.five k.w. than one of 500 k.w. In orderto eliminarte any possibility oflag in reversing, the exciter isdesigned to give three times the excitation volts needed togive the essential increase across the booster armature, therefore ensur-ing instantaneous response, the carbon regulator automaticallythrottling the excess when the co


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Image from page 252 of “Journal of electrical energy” (1917)


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Identifier: journalofele381151917sanf
Title: Journal of electrical energy
Year: 1917 (1910s)
Authors:
Subjects: Electrical engineering Electrical energy Gas manufacture and operates
Publisher: San Francisco : Technical Pub. Co.


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construction of an aluminum jacket castaround a copper tube has been abandoned in favor of asingle homogeneous casting. Coin Machine Manufacturing Conipany Date Tested—January 21, 1916. Type—Induction. Two heaters, No. 35B-109 S. C, No. 35A-55. Volts—110. Amperes—11 and 8.5. 1000 and 750 watt nominal. Heat—Single. General Dimensions—9 in. by 7.75 in. by 6.25 in. Weight—26 lb. Construction—A structure consisting of a copper coil withhollow core of cast iron or steel and laminated iron yokes,arranged somewhat in the order of a shell type trans-former. When the coil is connected to the suitable alter-nating current supply, eddy currents are set up in thecore, which will heat water in get in touch with therewith. The coilis wound with asbestos insulated wire, and is protected byan external cast iron shell. Water comes in direct contactwith heating element. Heat flow is radially inward towater and outward to air along great conducting paths ofmetal. x.~coppn? p/p£. H£AT///S £LEI*EHT~


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Insulation—None. Facilities for Cleaning—None, unless piped with specific tees.Otherwise heater must be disconnected.TestConnections and Method—Standard, % in. circulating pipe.Temperature Head—17° C.Circulation—13 gal. per hr. Efficiency—750 watt heater, 96% decreasing to SS% right after 12 hrs.1000 watt heater, 97% decreasing to, 90% after 12 hrs.Watts Input—At 110 volts, 750 watt heater, 740 to 700 wattsafter 12 hrs. 1000 watt heater, 1050 to 900 watts Energy Factor—At 110 volts, 750 watt heater, 77% to 74% after12 hrs. 100O watt heater, 79% to 80.5% after12 hrs. Surface Temperature—73° C. with water discharging at 64° C. Durability—Heater stood dry test with 150 volts applied forover an hour with out injury. Remarks—The induction heater is most likely the most durableof any created. Its efficiency can be improved by correct lag-ging. The low power element is undesirable. In service ithas been found to make an objectionable hum that istransmitted by the piping to which


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Image from page 477 of “The street railway overview” (1891)


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Identifier: streetrailwayrev07amer
Title: The street railway assessment
Year: 1891 (1890s)
Authors: American Street Railway Association Street Railway Accountants’ Association of America American Railway, Mechanical, and Electrical Association
Subjects: Street-railroads
Publisher: Chicago : Street Railway Evaluation Pub. Co


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s,such as combinations of zinc andantimony. When a static dis-charge requires place the Hash is in-stantaneous and is not followedb an arc. Tlie lightning dis-charge passes across these airgaps in preference to enteringthe coils of the machine for thesepossess wonderful self-induction to ahighly oscillatory discharge oflightning. Acting on this prin-ciple choke-coils are introduc-ed into the line. These consistof a couple of circular turns in circuitwhich have small self-induction with the normal current andfrequency, but when a lightning discharge is passing overthe line the self-induction becomes quite excellent. Fig. 14represents a lightning arrester produced by the Siemens &ampHalske Firm for alternating currents of high potential.The distance amongst the wires at the nearest point is about.04 in. for each and every 1,000 volts on the line. When an arc isformed an ascending existing of warm air and the action ofthe current in the wire trigger the arc to rise and break onaccount of the separation of the wires.


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FIG. 15—GARTONARRESTER. &lt^ticct5ail*Va^5^ylcW* 465


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(Posted by a CNC machining China Company and precision CNC machined parts China manufacturer)

Monday, October 20, 2014

Thursday, September 4, 2014

Cool Wire Reduce Electrical Discharge Machining images

Verify out these wire reduce electrical discharge machining pictures:


Image from web page 104 of “The street railway assessment” (1891)


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Identifier: streetrailwayrev10amer
Title: The street railway assessment
Year: 1891 (1890s)
Authors: American Street Railway Association Street Railway Accountants’ Association of America American Railway, Mechanical, and Electrical Association
Subjects: Street-railroads
Publisher: Chicago : Street Railway Evaluation Pub. Co


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otected by a lightning arrester. The rails arc bonded with cop-per bonds of .166 sq. in. sectional location and in addition arc con-nected each and every 55 yards with wire of the very same capacity. The arrangement of the various buildings belonging to the com-pany is shown in Fig. i. In the engine area arc three generatingunits, each and every consisting o( an horizontal tandem compouiul en-gine rated at 150 h. p. at two.35 r. p. m., belted to a six-pole con-tinuous existing soo-volt generator. The generators had been suppliedby the Union I^lektricitats-Gesellschaft. of Berlin. Each enginehas two fly-wheels, 1 carrying the generator belt, and the otherthe governor belt, and the machines are arranged to run con-densing or non-condensing as preferred. A surface condenser of theWorthington kind has been installed. The pumping method is ina separate area adjoining the boiler area as shown in Fig. i.There arc two Worthington feed pumps every obtaining a capacityof 2,500 gallons per hour, two injectors obtaining a capacity of 800


Text Appearing Right after Image:
FIG. J~TK.CK SHOWI.NI, LINE COXSTRLCTION. gallons per hour, with a lift of 20 ft., and a storage tank, intowhich condenser pumps discharge fresh condensing water in addi-tion to the water returned by the surface condenser. The boilerfeed pumps draw straight from this tank, forcing the water througha Green economizer ahead of it reaches the boilers. In the boiler area are three boilers as shown in Fig. 2. Thesearc of the double drum variety, and have a heating surface of 1,030sq. ft., and a normal evaporating capacity of 3.300 lb. per hour.The drums are 6 ft. 11 in. in diameter, the upper drum getting 20ft. long and the decrease a single 23 ft. long. The two water and steamspaces arc straight connected by enclosed tubes. Each drums possibly separately fed, and any section of the feed pipes amongst theboilers and pumps may be cut off. The fuel employed is .•^ustraliancoal, despite the fact that it is proposed to make use of petroleum waste for thispurpose at an early date, as this material can be secured on thegrounds


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Image from web page 118 of “Electric toy generating for amateurs. This operate treats on the creating of electrical toys, electrical apparatus, motors, dynamos and instruments in common … By T. O’Conor Sloane ..” (1914)


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Identifier: electrictoymakin00sloa
Title: Electric toy making for amateurs. This operate treats on the generating of electrical toys, electrical apparatus, motors, dynamos and instruments in basic … By T. O’Conor Sloane ..
Year: 1914 (1910s)
Authors: Sloane, T. O’Conor (Thomas O’Conor), 1851-1940
Subjects: Electric apparatus and appliances Electric toys
Publisher: New York, The N.W. Henley publishing co.


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mary of the coil. No. 24 wire wouldbe a great size for each. This disposition will improve the tension of thecircuit, and will give far more powerful effects, as theapparatus is much more swiftly moved. Ano-Kato. The words ano, kato, are taken from the Greek,and mean up, down, and allude to the motions of theobjects observed in the box. The reduce shows its generalfeatures of construction. It is a shallow box whosebottom and interior sides are coated with tin-foil. Anumber of objects are created out of the lightest pith* The latter might be of the pith of cornstalks, ofelder pith, or, what is nonetheless much better, of the pith of thedry stalks of the sunflower. Tiny men with jointedlegs and arms, insects, jointed snakes, and so forth., are madeout of the pith, and might be colored with a small red ANO-KATO. 117 and black ink. The box is covered with a piece ofglass. If the glass is rubbed with a correct rubber, it be-comes electrically excited, and attracts the objects inthe box. As they rise, they touch the glass and as


Text Appearing Right after Image:
Fig. 47. Ano-Kato. they lie against it, becoming charged with the sameelectricity, are swiftly repelled. They fall into thebox and are discharged by coming against the tin-foil, which, for higher possible distinction, could be con-sidered to be in electrical communication with theearth. This operation goes on as lengthy as the rubbing iskept up. For the rubber, a pad of hair, or other material,around which a piece of kid glove is tied, is employed. 118 ELECTRIC TOT Generating. This may possibly be made much far more efficient by the use ofsome amalgam such as that utilized on electric machines. Straightforward Experiments in Static Electricity.Some simple experiments in static electricity arenext illustrated. The initial reduce shows a modification


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(Posted by a CNC machining China Company and precision CNC machined parts China manufacturer)

Wednesday, August 20, 2014

Lastest Electron Discharge Machining China News

Global Waterjet Cutting China Machine Chinas Industry

… Waterjet Cutting China Systems II-43Job Shops II-43Wire Electrical Discharge Machining China ("EDM") shops II-43Laser Shops II-43Aerospace Shops II-43Tooling Shops II-43Architectural Fabricators II-43Metal Fabricators II-43Disadvantages of Abrasive Waterjet II-43.
Read more on SYS-CON Media (press release)



Lastest Electron Discharge Machining China News

Monday, August 18, 2014

Discharge Valve


Discharge Valve

Discharge valves are devices that make it possible to monitor and control the flow of a substance from a source and through some type of circulation system. The idea behind the discharge valve is that it provides the ability to adjust that flow in order to respond to situations that require a change in the volume or speed of that flow. A discharge control valve is included in a number of different systems that process liquids and gases, and may even be utilized as a safety measure in some electrical systems.


A basic discharge valve serves to regulate the flow of a substance, making it possible to increase or decrease that flow so that the desired outcome is achieved. For example, this type of valve may be included in the design of a dam, making it possible to control the flow of water so that the water pressure within the dam is maintained within a safe limit. Doing so helps to preserve the integrity of the dam, since water is periodically released through the discharge relief valve, and allowed to flow into nearby bodies of water. Not only does the valve protect the dam, it also helps to ensure that water levels within those bodies of water are maintained at respectable levels.


The same general approach is used in systems that convey natural gas through a utility system. At various junctions in the pipeline that is used to deliver the natural gas to consumers, discharge valves are strategically placed as safety devices. In the event that there is some type of breach or failure at any point in the system, the valves are closed while repairs are made. This prevents an excessive amount of gas building up at any point in the system and increasing the chances of additional failures.


The discharge valve is also used in manufacturing settings, often as a means of routing air or water through machinery used to produce goods. With the aid of valves that are incorporated along the system, it is possible to control the flow of air so that the machinery is able to function at optimum efficiency. Most fire extinguishing systems within buildings make use of the valves to control the flow of water in the event that a fire does break out. Sensors trigger the valves to open, releasing water into the area, and then trigger the valves to close once the temperature within the space decreases, as the flames are subdued.


Depending on the type of application, a discharge valve may be manually operated or triggered by sensors or some type of computer equipment. It is not unusual today for a hybrid design to be used, allowing for both manual and automated opening and closing of the valve in response to some type of computer program. As with most types of equipment, a discharge valve must be inspected and maintained in order for the device to remain fully functional and efficient over a number of years.




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http://www.ipfonline.com is India’s No. 1 Industrial Product Finder. The portal is a veritable storehouse of information on industrial products/services.




Discharge Valve

Nice Wire Electric Discharge Machining China photos

A few nice wire electric discharge machining images I found:


Image from page 147 of “An international system of electro-therapeutics : for students, general practitioners, and specialists” (1894)


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Identifier: internationalsys00bige
Title: An international system of electro-therapeutics : for students, general practitioners, and specialists
Year: 1894 (1890s)
Authors: Bigelow, Horatio R. (Horatio Ripley) Massey, George Betton, 1856-1927 Prince, Morton, 1854-1929 Jacobi, Mary Putnam, 1842-1906 Hayes, Plymmon Sandford, 1850-
Subjects: Electrotherapeutics Hysteria Uterus Electric Stimulation Therapy Uterus Hysteria
Publisher: Philadelphia : F. A. Davis London : F.J. Rebman


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chouc, which has been slightlyrubbed on the clothes, either above or below the middle of the drum(corresponding with the middle of the inner vertical double comb). Thisexciting or charging of the machine is manifested by a whizzing sound.If the motion be stopped, the electric charge of the cylinders lasts forseveral hours. If the handle be turned in the opposite direction, themachine does not become uncharged. Atkinsons Toepler electric machine is an electro-static machine, of A-106 McCLURE. high tension and large quantity, whose sensitiveness to atmosphericinfluences does not interfere with its practical working. It is made withtwo circular plates of glass, one stationary, the other revolving close infront of it; two sets of combs and two Le3^den jars, with a switch betweenthem. To the back of the stationary plate are attached two sets of paperand tin-foil inductors, connected with which are two wire brushes, and tothe front of the revolving plate are attached six metal carriers with


Text Appearing After Image:
Fig. 6.—Atkinsons Toepler Electkic Machine China. raised centres, which are brought into contact with the brushes as theplate revolves, and generate the electric charge, which is rapidly increasedby induction. Opposite parts of the plates and opposite inductors andcarriers become oppositely electrified, condensation takes place in the jars,and sparks pass between the sliding electrodes, which may be increasedto seven inches or more in length. Electricity is generated at once, andthe electric charge constantly sustained by the friction of the carriers STATIC ELECTRICITY AND MAGNETISM. A-107 and brushes ; heuce the machine remains in practical working-order underthe most unfavorable atmospheric conditions. The switch, as seen in the cut, is placed between the Leyden jars,and in connection with their outer coatings, so that the induced currentbetween them is controlled by the operator. As this current flows atthe same instant with the discharge between the sliding electrodes


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Image from page 950 of “Electric railway journal” (1908)


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Identifier: electricrailway551920newy
Title: Electric railway journal
Year: 1908 (1900s)
Authors:
Subjects: Electric railroads
Publisher: [New York] McGraw Hill Pub. Co


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ower. United Railways & Electric Com-pany. After passing interlocking territory the electric carsproceed to the prepayment area, discharge their pas-sengers and proceed around the loop. Most of the carsthat run to the shipyards, after completing their morn-ing work, are stored on the inbound track during theday, a shuttle car being operated on the outbound trackfrom about 9:30 to 2 and a two-car train shuttle from2 to 4. The latter is necessary on account of the com-ing of the men to work for the afternoon shift. Thisshuttle connects at the interlocking tower with themain-line service. There is more or less casual travelbetween the shipyard office and the city, which makesit imperative to provide this shuttle service duringthe hours when the demands for traffic do not necessi-tate through service. A representative of the trans-portation department is located at the shipyard all dayand has supervision of the operation and storing ofcars. During the day a representative of the shops


Text Appearing After Image:
AT LEFT, SIGNAL TOWER AT CROSSING OF MAIN TRACK OF P. R. R. AND DOUBLE TRACK OF U. R. & E. CO.AT RIGHT, INTERLOCKING MACHINE IN SIGNAL TOWER display four lights of yellowish tinge in a horizontalline for stop and four in a vertical line for proceed.The position dwarf signals have two lights horizontalfor stop and two at 45 deg. for proceed. All track-circuit apparatus is of the Union Switch &Signal Companys manufacture, with latest model 15vane-type relays. Compressed air is distributed by 1-in. galvanizedpipe and wires in grooved lumber, both mounted onsame concrete foundations placed every 7 ft. Power for the air compressors is supplied from theU. R. & E. Companys 600-volt feeders and the alter-nating current for signals, switch valves and trackcircuits is secured from the 2200-volt, 25-cycle mainsused in the U. R. & E. Companys signal system, steppeddown to 110 volts. The plant was designed and installed by the UnionSwitch & Signal Company in accordance with spe


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Nice Wire Electric Discharge Machining China photos

Tuesday, August 12, 2014

Nice Electron Discharge Machining China photos

Some cool electron discharge machining images:


Image from page 62 of “Practical electro-therapeutics and X-ray therapy : with chapters on phototherapy, X-ray in eye surgery, X-ray in dentistry, and medico-legal aspect of the X-ray” (1912)


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Identifier: practicalelectro00mart
Title: Practical electro-therapeutics and X-ray therapy : with chapters on phototherapy, X-ray in eye surgery, X-ray in dentistry, and medico-legal aspect of the X-ray
Year: 1912 (1910s)
Authors: Martin, James Madison, 1866-1947
Subjects: Electrotherapeutics X-rays Diagnosis, Radioscopic Eye Electric Stimulation Therapy X-Ray Therapy Ophthalmologic Surgical Procedures
Publisher: St. Louis : C.V. Mosby


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ddition of negative charges anda like momentarily weakening of the negative charges on B. Theincrease of the negative charges on A increases the negative charge ELECTROSTATICS 59 on the inside coat of Leyden jar Ll, while the discharge of B weak-ens the negative charges on the inside coating of Leyden jar L2.At this instant the electrons that have collected in considerablenumbers on the outside coating of Leyden jar Ll will returnthrough the conducting cord Gl, electrode HI, the patient M, elec-trode H2, conducting cord G2, and back to the outside coating ofLeyden jar L2, to be forced away again as soon as the jar L2 hasits inner coating negatively charged. The whole process takesonly the smallest possible fraction of a second, and because of itsrapid change in direction the current is a truly interrupted cur-rent, simulating closely the faradic current and used mainly forthe same class of cases. It is claimed that the oscillations in thecurrent are from 200,000 to 300,000 per second.


Text Appearing After Image:
Fig. 28.—Arrangement for potential alternation. Patient negative. (6) Potential Alternation.—This particular arrangement ofstatic machine, patient, and electrode was first suggested by Doc-tor S. H. Monell in 1893. It differs very little from the Mortonwave current, to be described, and has no advantage over it in thetreatment of any case. It is seldom used, but is here describedbecause sometimes spoken of in papers and text-books. Fig. 28 shows the arrangement of static machine, electrode, andpatient to produce the effect known as potential alternation. Itdiffers mainly from the Morton wave in the spark gap, which, in-stead of being between the prime conductors, is between the sta-tionary electrode and the ball on the shepherds crook on the prime 60 PRACTICAL ELECTRO-THERAPEUTICS AND X-RAY THERAPY conductor B. In this arrangement the overcharge on the patient Moverflows to the stationary electrode S and on to the ground throughconducting wire d. This condition is true when the pa


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Image from page 61 of “Practical electro-therapeutics and X-ray therapy : with chapters on phototherapy, X-ray in eye surgery, X-ray in dentistry, and medico-legal aspect of the X-ray” (1912)


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Identifier: practicalelectro00mart
Title: Practical electro-therapeutics and X-ray therapy : with chapters on phototherapy, X-ray in eye surgery, X-ray in dentistry, and medico-legal aspect of the X-ray
Year: 1912 (1910s)
Authors: Martin, James Madison, 1866-1947
Subjects: Electrotherapeutics X-rays Diagnosis, Radioscopic Eye Electric Stimulation Therapy X-Ray Therapy Ophthalmologic Surgical Procedures
Publisher: St. Louis : C.V. Mosby


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nt positive. (5) Static Induced Current.—This current was first described byDoctor W. J. Morton in 1880. The prime conductors are con-nected with the inside coating of the Leyden jars and the patientwith the outside coatings by means of two conducting cords and 58 PRACTICAL ELECTRO-THERAPEUTICS AND X-RAY THERAPY electrodes. Fig. 27 represents this arrangement. A and B arethe prime conductors, Ll and L2 are the Leyden jars, El andE2 are the binding posts connected to the outside coatings of thejars, Gl and G2 are the conducting cords, HI and H2 are theelectrodes, and M is the patient. It is not necessary to placethe patient on the insulated platform. When the machine is started,electrons flow from the negative prime conductor B into Leydenjar L2, making it strongly negative. Electrons are forced awayfrom the outside coating of this jar through conducting cord G2and electrode H2 to the patient M. The electrons leave the pa-tient through electrode HI, conductor Gl, and binding post El,


Text Appearing After Image:
Fig. 27.—Static induced current. and to the outside coating of Leyden jar Ll, making it stronglynegative. The action of the static machine, already explained,takes the electrons from the prime conductor A and the insidecoating of Leyden jar Ll, making them strongly positive. Thestrength of this current is controlled by the speed of the revolvingplates and size of the Leyden jars. This current is oscillating incharacter, playing backward and forward through the patient be-tween the outer coatings of the Leyden jars. When a sparkjumps across the air gap from B to A, the positive charge on Ais momentarily neutralized by an addition of negative charges anda like momentarily weakening of the negative charges on B. Theincrease of the negative charges on A increases the negative charge ELECTROSTATICS 59 on the inside coat of Leyden jar Ll, while the discharge of B weak-ens the negative charges on the inside coating of Leyden jar L2.At this instant the electrons that have collected in consi


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Image from page 94 of “The principles and practice of roentgenological technique” (1920)


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Identifier: principlespracti00hirs
Title: The principles and practice of roentgenological technique
Year: 1920 (1920s)
Authors: Hirsch, Isaac Seth, 1889-1942
Subjects: Radiography
Publisher: New York, American X-Ray Pub. Co.


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^;l!l!llt- B A Fig. 87.—Coolidge tube circuit B is the storage bat-tery, A is the ammeter, R is the rheostat forregulation of the battery current. The doublewires go to the cathode end of the tube. Mis the milliamperemeter. possible and in such a way that it can be easilyread from the operating position. If the polarity of the machine is wrong, it


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Fig. 88.—Storage battery arrangement for Coolidgetube with attachment for charging. When theextension to the right is placed vertically thebattery charges. (Waite and Bartlett). will be shown by the fact that the milliam-meter will register no current, regardless ofhow high the filament temperature may be. Before the tube can be energized it is neces-sary to heat the filament. 70 ENERGIZATION OF COOLIDGE TUBE No discharge current through the tube cantake place unless the filament is heated,and the amount of discharge current whichmay be passed into the tube is determined pri-marily by the degree of heating of the fila-ment. If the temperature of the filament is low,only a small number of electrons escape fromit and, consequently, only a small dischargecurrent can be sent through the tube. Themaximum current for each particular filamenttemperature is called the saturation currentwhich means that all the electrons are beingutilized as fast as they are produced. Increas-ing the impress


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Nice Electron Discharge Machining China photos

Monday, August 11, 2014

Nice Wire Electric Discharge Machining China photos

A few nice wire electric discharge machining images I found:


Image from page 717 of “Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons’ cyclopaedia of applied mechanics” (1892)


Image by Internet Archive Book Images
Identifier: modernmechanisme00benj
Title: Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons’ cyclopaedia of applied mechanics
Year: 1892 (1890s)
Authors: Benjamin, Park, 1849-1922
Subjects: Mechanical engineering
Publisher: New York, D. Appleton


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Pig. 7.—The Allis geared mine pamp. tooth pinion and gear of such proportions that the engine will run at a fair rate of speedwhile the pump plungers move at a slow speed when running at rated capacity. Electric Pumps.—The numerous a{)|)lications of electricity to pumping purposes whichhave been made during the last five years simply amount in most cases to the attachment toany form of jjumping machine of an electric motor. Quite recently such applications havebeen made to heavy pumping, as for water-works, deep mines, etc. In the latter the power istransmitted from the electric generator on the surface to the motor at the bottom of the mine


Text Appearing After Image:
Fig. 8.—Electric-motor pump. through copper wires or rods, thus dispensing with the cumbrous reciprocating pump-rodsused in the Cornish system of mine pumps, or with the steam pipes used with direct-actingsteam-pumps. Fig. 8 illustrates an electric motor applied to a duplex water-works puraping-engine. The motor is of the Edison vertical type, arranged with insulated pinion, etc. Thewater end of the machine is the usual water, works type, having composition plungers work- PUMPS, EOTARY. 689 ing through composition sleeves. The suction valves being placed below and the dischargevalves above the plungers, gives the room necessary for a very large amount of valve areaand water ^aassages. This reduces the friction of the water as it passes through the pumpto a minimum. There is a connection between the discharge of the pump (immediatelv underthe air chamber) and the suction-chamber with a gate valve on same ; the object of thisarrangement is that when starting up the pumping-engine the


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Image from page 445 of “The Gardeners’ chronicle : a weekly illustrated journal of horticulture and allied subjects” (1874)


Image by Internet Archive Book Images
Identifier: gardenerschronic13lond
Title: The Gardeners’ chronicle : a weekly illustrated journal of horticulture and allied subjects
Year: 1874 (1870s)
Authors:
Subjects: Ornamental horticulture Horticulture Plants, Ornamental Gardening
Publisher: London : [Gardeners Chronicle]


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nner above-men-tioned, traverses the wires, it suddenly comes to astandstill at theendof the charcoal candles; therethe two opposite currents, positive and negative,meet, rush at one another as it were, owing tothe great affinity of positive for negative. Theresult of this combination of opposite electrici-ties is called the discharge or spark, hererepresented in the incandescence of the char- _coal and the production of light. What was ■electricity or magnetism is now represented ■by light and heat. The whole thing is a most curious exemplifi-cation of the relation between forces. Firstthe sun-force produced the wood, which ulti-mately became coal, and in which the gas isimprisoned. The gas thus indirectly producedby sunlight and sunheat is liberated by heat inthe furnaces of the gasworks, and made to workthe engine. Great mechanical force is thusproduced : that force transmitted to a magnetinduces two opposite electric currents, which,recombining, reproduce, as it were, the sun-


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FlG. 75. —FORCING nV THE ELECTRIC LIGHT. moisture do but set the plant to work, and inso doing it, at least at first, avails itself of thestored material made the season before. The machine by which the light is producedat Tonbridge Wells is worked by a small gasengine, which latter is so very convenient in itsaction that we are surprised such engines are notmore frequently employed where gas is to behad. There is no lighting fires, getting upsteam or stoking—the engine begins to workimmediately. As to the electric light it is not needful for usto go fully into a matter that could only be ex-plained by a professed electrician, and compre-hended by one familiar with that branch ofscience. Suffice it to say that the principle ofthe light rests upon the sudden combination oftwo opposite electrical currents and the con-version of one sort of force into otherforces—magnetism, or magneto-electricity intoheat and light. There is a magnet which byinduction imbues with its own properties


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Nice Wire Electric Discharge Machining China photos

Tuesday, August 5, 2014

Lastest Electro Discharge Machining China News

Control 2014 Trade Fair: Alicona Manufacturing China and Makino to Present Latest

Control 2014: Alicona Manufacturing China and machine manufacturer Makino will present a high precision electrical discharge machine (EDM) based upon True AdaptTM Closed-Loop Manufacturing China technology as developed through the collaboration of Austrian …
Read more on Azom.com



Lastest Electro Discharge Machining China News

Thursday, July 31, 2014

Cool Wire Cut Electrical Discharge Machining China images

Some cool wire cut electrical discharge machining images:


Image from page 847 of “Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons’ cyclopaedia of applied mechanics” (1892)


Image by internetarchivebookimages
Identifier: modernmechanisme00benj
Title: Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons’ cyclopaedia of applied mechanics
Year: 1892 (1890s)
Authors: Benjamin, Park, 1849-1922
Subjects: Mechanical engineering
Publisher: New York, D. Appleton


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d stroke, it is apparent that if the feed wheel is run down against it in the positionshown in the engraving, the pusher will be given its full traverse and the greatest feed. Ifrun back to clear the travel of the agitator, the pusher will, of course, have no motion and thefeed will stop. Between these extremes any desired rate of feed can be given. In like manner, the rock of the grate bars can be adjusted between any limiting angles,and over a range of motion from no movement to full throw, by means of the sheath nut andjam nuts on the connecting rod. By these adjustments the whole action of the stoker iscontrolled, and the fires forced, checked, or banked at will. Stone Breaker : see Ore-crushing Machine Chinas. ST0R.4.(tE batteries. The storage, secondary or reversible battery, and accumu-lator are different terms applied to a form of cell based on the principle demonstrated byFaraday in 1834, that chemical and electrical energy were mutually convertible. In 1859, 816 STORAGE BATTERIES.


Text Appearing After Image:
after experiments with various metals, Plante decided upon the use of lead plates in dilutesulphuric acid, because in discharge both plates were active ; that is, not only did the per-oxide of lead plate combine witli hydrogen, but the reduced metallic lead combined withoxygen. Plauies cell was originally constructed with two plates of sheet lead, separated bygutta-percha strips, one sheet bcinglaid over the other, with two gutta-percha strips betweenthem, and two more laid on the upper sheet, as shown at A, Fig. 1. They were then rolled together and clamped, as shown at B, a strip of leail being left attached to the corner of each sheet in cutting China, bywhich connection could i)e made. The sheets thusrolled togetlier were ])hiced in a jar of glass or ebonite,containing a 10 per cent, solution of sulphuric acid.The jar had an ebonite cover, with binding screws towhich the connecting strips were attached ; alsoclamps for holding wires to show the heating effectof the discharge. The electr


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Cool Wire Cut Electrical Discharge Machining China images

Friday, July 25, 2014

Lastest Electronic Discharge Machining China News

Carbon Nanotubes May Protect Electrodes for commercial version of Focus

The time needed to machine the interior surface of the Tungsten electrode by electro discharge marching, a process in which electric current melts away the material to be removed was greatly underestimated. Tungsten is a notoriously difficult metal to …
Read more on Next Big Future


Metal Injection Moulding manufacturers lead the way in 2014 MPIF awards

Metal Injection Molded (MIM) parts once again shone in the 2014 Metal Powder Industry Federation (MPIF) PM Design Excellence Awards competition. The winners were announced at the PM2014 World Congress, Orlando, USA, May 18-22 and two industry …
Read more on Foundry-Planet.com



Lastest Electronic Discharge Machining China News

Thursday, July 17, 2014

How Partial Discharge Generators Could Impact Your Operations


How Partial Discharge Generators Could Impact Your Operations


Partial discharge is an electrical phenomenon that can occur in any large electric machinery that requires insulation in order to be operated safely. Sometimes, due to the high amount of stress placed on the insulation material by the high voltages of electricity passing through the machinery, imperfections develop in the insulating material. Once imperfections appear, the integrity of the insulation has failed, and partial discharges can take place in these areas. Partial discharge generators refer to electrical generators with insulation that has failed, causing partial discharge and signifying a probable impending failure of the insulation. Without proper partial discharge monitoring, partial discharge generators are a problem that could go unnoticed, and this could lead to very serious consequences for any operation that depends on electrical generators or makes use of them in any way.


Many large industrial operations do have some form of generator on their premises, in order to power machinery and sometimes simply as a source of backup energy. This is particularly true in those industries that deal with extremely expensive and sensitive materials, as a shutdown of local power and the consequent interruption of manufacturing China processes could mean enormous losses for the owners. The solution is therefore to have on-site generators that are responsible for providing part of the power needs of the operation and would remain active even if the local power supply were to be cut off for some reason.


The main problem with partial discharge generators is that they simply cannot be identified by the naked eye. With other similar electrical problems, such as corona discharges, there is a steady glow or disturbance in the air that is evidence of a problem with the generator. Partial discharge generators, however, do not produce any such visible disturbance, making partial discharge monitoring absolutely essential.


Due to the nature of the machinery involved, partial discharge generators are usually large and hulking pieces of machinery which have enormous amounts of electricity flowing through them. For these reasons, it is unsafe for people to be working in close proximity to these machines and partial discharge generators, having had failures in their electrical insulation, would definitely pose a hazard to the health of nearby workers. A complete failure in the electrical insulation of a generator could result in a release of high levels of electricity.


With partial discharge monitoring, however, this problem can be detected early on and remedied, preventing any further worsening of the problem and allowing for the maintenance of safety standards. Partial discharge monitoring essentially involves the installation of monitoring equipment on and around generators or other machinery that might potentially develop partial discharge problems. The partial discharge monitoring equipment does not affect the performance of the machinery in any way, and simply provides an early-warning system that will alert the company to the presence of any partial discharges, thus allowing for pre-emptive repairs and maintenance to be carried out, thus preventing a complete breakdown of the electrical insulation of heavy machinery, and allowing the owner of the operation to rest much easier knowing that such problems will not go undetected.



If your operations are such that there might be partial discharge generators on your premises, then you should definitely invest in a partial discharge monitoring system from Dynamic Ratings that will allow you to rest easy .



Related Electrical Discharge Machining China Articles



How Partial Discharge Generators Could Impact Your Operations

Saturday, July 12, 2014

Nice Discharge Machining China photos

Check out these discharge machining China images:


Evan Campbell (Cam) Devine, Uncle Bill Watson"s Friend

Image by bill barber
From my set entitled "Uncle Bill Watson"
www.flickr.com/photos/21861018@N00/sets/72157600269993237/
In my photostream
www.flickr.com/photos/21861018@N00/
Watson reunion photo in which Cam Devine appears
www.flickr.com/photos/21861018@N00/536290657/in/set-72157...

Campbell (Cam) Devine was my Uncle Bill Watson’s best friend during early school years in Grand Valley, Ontario. Cam was killed on August 12, 1944, when the Flying Boat he was piloting crashed in Ireland. I am including a notice of his death from the Grand Valley Star and Vidette, and a detailed account of the crash as remembered by Chuck Singer, one of Cam’s flight crew.

From The Grand Valley Star and Vidette, August, 1944
Another Grand Valley Boy Passes Overseas
News of the death of another Grand Valley boy overseas was received in town the latter part of last week. He was Flight Lieut Campbell Devine, elder son of Dr. and Mrs. E. W. Devine of Orillia formerly of Grand Valley. Campbell was born in Grand Valley and moved with his parents to Orillia some years ago. His death occurred in Ireland on Aug.12 and interment took place in Ireland. He was a chum and pal of the late P.O. Bill Watson of Grand Valley. Brief references to his death were made in the pulpits of Knox Presbyterian Church on Sunday morning and at the memorial service for the late P.O. Watson in Trinity United Church on Sunday afternoon. Besides his parents and one brother, Donald, the deceased leaves a widow and one child, all of Orillia. To the bereaved parents, brother, widow and child the sympathy of this community is extended

Full particulars regarding his death had not been received at the time of going to press.

Taken from THE BATTLE OF THE ATLANTIC Highlights from 422 R.C.A.F. Squadron, 1942 - 1945
www.airforcemuseum.ca/422ww2.htm
August 12, 1944 saw the crash of Sunderland T of 422, in Donegal County, Ireland, just north of Belleek, Northern Ireland, shortly after take-off for an Atlantic patrol. The heavily loaded aircraft had suffered an engine fire and loss of propeller and a crash landing was attempted on a relatively flat area. The skipper, F/L Cam Devine and two crew members died in the crash. The remainder of the crew received serious injuries and were initially treated in the Irish hospital in Ballyshannon, Donegal County, and later moved to the military hospital in Necarne Castle near Irvinestown, Northern Ireland or to hospitals in England.

Taken from the The Impartial Reporter: For Fermanagh, Tyrone and Border Counties of the Republic of Ireland:
Issue: 15-08-2002
www.impartialreporter.com/archive/2002-08-15/news/story41...

A tear ran down the cheek of Chuck Singer as he stood on the windswept bogland of Cashelard, receiving long overdue recognition for an act of great courage undertaken 58 years ago to the day.

It was a marvellous moment, a fitting closure to a remarkable tale, owing much not only to Chuck, whose selfless actions as a 19 year old First Gunner on a stricken Sunderland flying boat in 1944 saved the life of a comrade, but also to his son Bob (who correctly pointed out that reports of his father"s death in the Squadron records were greatly exaggerated), and local historians Joe O"Loughlin and Breege McCusker.

A large crowd gathered on Monday at the exact hour at the site where Sunderland NJ175 crashed shortly after taking off from its base at Castle Archdale. They gathered to pay tribute to Sergeant Chuck Singer, but also to the three airmen who did not survive the crash, and whose names are recorded on a memorial stone erected at the site two years ago. With a beautiful ceremony choreographed brilliantly by Joe and Breege, interspersed with presentations to Chuck, the crowd listened to a recounting of the Canadian"s remarkable story.

422 Squadron Royal Canadian Air Force arrived in Fermanagh in the spring of 1944, youthful, joyful crews of men who had thus far generally enjoyed their war experiences, stationed with Coastal Command in Scotland, protecting Merchant Navy convoys from the threat of German U Boats.

They were to do the same job from their base on Lough Erne, patrolling out into the Atlantic and also into the Bay Of Biscay and the English Channel. Their role was an important one- the U Boats were the only cog of the German war machine which really frightened Churchill, and any break in the Allies supply line would have had a debilitating effect on the war effort.

But to the airmen based in quiet County Fermanagh, on the usually serene Lower Lough Erne, the war must often have seemed a world away. Chuck remembers that conditions on the base were "beautiful, just fine", and that even when they were airborne, patrolling at an average altitude of 400 feet, there was never any real feeling of unease or fear.

"We felt like nothing was ever going to happen to us out there. To fly was just a treat to get up and if they ever postponed a flight on us we got sick, you know, just sick. I don"t know any aircrew that ever worried- it was all jovial, funny guys that had a good time, I don"t know anybody that ever worried about dying. Flying out to sea in those things was so peaceful. You almost forgot that you had a job to do it was so beautiful and peaceful."

During his short spell in Fermanagh, Chuck fortunately never had to fire his guns in anger from his position in the turret at the top of the giant seaplane, but remembers one occasion when his crew felt they were about to have their first serious engagement with the enemy.

"We thought we had a pair of them one time," he said. "It looked like a mother ship refuelling a smaller sub, so we dived at that thing, we had all the depth charges out on the wings, we were ready for everything... and they were two of the most beautiful Blue Whales you ever saw in your life."

Chuck left his turret and aimed a camera instead of his machine gun. He took a couple of photographs and left them in to get developed back at the base, but due to his unfortunate exit from Castle Archdale he was never able to pick them up again. "We went out feet first and I never did get them. I"d loved to have had those pictures," he said wistfully.

The biggest threat to their safety that Chuck encountered during the patrols actually came from the Merchant Navy which the Sunderlands and Catalinas were sent to protect. Engagements with enemy aircraft and U Boats were rare by 1944, but the Merchant convoys were jumpy, and fairly "trigger happy" recalled Chuck.

"The worst part was flying alongside a convoy, because those merchant people- they were shooting at everything, and they didn"t know us from the enemy. When we used to approach a convoy the skipper used to give them every view they could of the markings or else the Merchant Navy would shoot you down."

They would also shoot coloured flares by way of identifying themselves, but the colours were changed frequently, and sending up the wrong colour could prove fatal. Call signs were also used for identification and changed frequently, but there is one call sign which is indelibly printed on Chuck"s memory. "Eyeglass Eagle". This was the last call sign of Sunderland NJ175, as it took off around 11:15 on Saturday morning, August 12, 1944. NJ175 was like any other Sunderland docked at the Flying Boat base, and was supposed to have been checked by the engineers before take off. Every one of the 12 man crew had checks to make after being rowed out to the boat on a dinghy.

"When it was our turn to fly they"d put us in a dinghy from the dock and run us to one of the boats, and we"d get on it and check everything out, and if something wasn"t right we"d radio the dinghy and it would come back and get us and take us to another one. Often there"d be two or three before we"d get one that was operational."

Everything happened in such a hurry that it was fairly common to experience mechanical problems, said Chuck, and often the crews would be delayed at least an hour by repairs.

On the flight on August 12 was his regular crew, all of whom had got to know each other like brothers, having flown and socialised together in Fermanagh for months, as well as a few trainees, learning the ropes, and sitting, fatally as it turned out, near the cockpit behind the skipper, Flight Lieutenant Cam Devine.

They were heading for the English Channel, hoping to catch the German subs heading for Norway from their base at Brest on the French coast. The men- all members of the RCAF, were expecting to be away for between 10 and 12 hours, burning an enormous 2000 gallons of fuel. As it happened, they were only airborne for a fraction of that time- about 30 minutes- and had to dump as much of the fuel as possible over the surrounding area.

"The engine sounded uneasy all the time after we took off. It just didn"t sound like it was hitting all cylinders, it sounded funny. But sometimes that clears up, but this time it didn"t," said Chuck. The noises got worse as the plane reached the West Coast of Ireland and a problem in the outer starboard engine had developed into a fire. The crew sent out a mayday call and turned around to return to base. Orders came in from Castle Archdale to jettison the fuel and the depth charges on board, which would have exploded on impacting with the ground.

Local people in the fields around Belleek were used to seeing the huge Flying Boats sailing out to war over their heads along the secretly negotiated Donegal Corridor, but to see one with thick black smoke billowing out from its starboard engine was an unusual and alarming experience. Although Cashelard is a remote area, there were a number of people in the vicinity, taking advantage of the great weather to work in the fields or enjoy the first day of the Grouse shooting season. Their peace was about to be shattered.

On board the plane, dumping the 2000 gallons of fuel was proving too dangerous, as the high octane fuel was pouring out perilously close to the burning engine, risking an explosion which would blow the plane to smithereens. Flying Officer Alex Platsko, the Second Pilot, whose job it was to jettison the fuel and depth charges in preparation for a less than routine landing, now had to shut off the fuel dump valve again.

And there was another problem- the track for the depth charges was sticking, and the crew couldn"t get them out of the plane. Eventually, after a desperate struggle, the crew worked the charges free, and they dropped harmlessly to the ground, to be blown up next day by the Irish Army and officials from Castle Archdale.

Platsko returned to the task of shutting off the fuel dump valve, but was shuddered out of his work by a loud bang as the burning engine suddenly froze up and the propeller twisted off its shaft and spun into the starboard float, causing the plane to bank suddenly, steeply to the right. Chuck remembers the sharp snap of the propeller breaking off, not long before impact.

Skipper Cam Devine, just 22 years of age, had a fight on his hands. With one engine on fire and out of action, and a half a tonne propeller embedded in the side of one of his floats, the plane was losing height at a frightening rate and in danger of hitting the ground sideways first. "We could"ve cartwheeled - if the wing had touched first we would all have been dead," said Chuck.

The crew members were adopting the crash position, something similar to what is advised on commercial airliners today, but without the fancy demonstration cards. Cam Devine was fighting for his life, and the lives of his comrades, fighting to get the heavy plane back on an even keel to give them a chance in the crash landing which was now inevitable. Somehow, against the odds, he achieved this, righting the plane just before impact on the Cashelard ground, succeeding in saving the lives of nine of his crew members, but losing his own life in the process.

Chuck remembers certain aspects of the impact, but he was concussed, and blood was streaming down his face. Three of the crew- Cam Devine, Pilot Officer R.T Wilkinson and Flight Sergeant Jack Forrest- died instantly. Alex Platsko, who hadn"t time to buckle himself back into his seat after jettisoning the depth charges, was thrown through the windscreen, and survived, although he was seriously injured.

The plane hit the lip of a country track, coming down perpendicular to the road rather than along it, which caused the bottom half of the plane to be severed in the sudden halt. "When the bottom half of the plane was torn out I was up in the ceiling getting my arms broke and my face cut, and concussion, and I was looking down and I could see George Colbourne laying face-up on the bottom of the boat," recalled Chuck. "We went over the top of him, but it looked like we were still and he was sliding on a toboggan underneath us- that was the effect we got. That was the last thing I remembered until I gained consciousness again and tried to get out of that thing."

The next thing he remembers is the heather all around the crash site being on fire. The Sunderland had broken in two places- at the tail, and between the under section and the rest of the plane. The tail breaking off was a blessing in disguise, affording an escape hatch for Chuck and some of the other crew members.

Dazed, bleeding, and with his left arm hanging limply by his side, Chuck somehow got out of the mangled remains of the plane. As aviation fuel leaked out of the plane the fire spread, and bullets and ammunition were exploding in the heat. Chuck staggered clear of the heat, but heard George Colbourne crying for help. George was trapped under the wreckage of the tail, powerless, with two broken legs. Chuck turned back into the flames.

"I can remember going back when I heard him crying and screaming. I heard him before this, and I thought "God, I"m not going to get him", and then he screamed one more time and I thought: "I"ve got to get him", so I went back after him. I pulled my arm out hauling him out- I tore a ligament in my shoulder. I couldn"t use my left arm- it was broken. So by the time I got him maybe 50 to 100 feet away, I don"t know how far it was- until I couldn"t feel the heat anymore- I passed out, and so did he."

The fire totally engulfed the plane, but somehow all of the survivors had got clear of the wreckage. Joe O"Loughlin reached the plane on his bicycle about half an hour after the crash, along with other locals and helpers, including the supposedly neutral Irish Army from Finner Camp, rescue services from Castle Archdale, and medical staff from Ballyshannon"s Shiel Hospital. All of the injured, with wounds ranging from a broken back to severe burns, were taken to the hospital, where they remained for 48 hours before being transferred to St Angelo Airport and over to hospital in England.

At this point, according to the records of 422 Squadron, Sergeant Charles (Chuck) Singer died. This was quite an alarming discovery for Bob Singer in January this year, who thought that his father had recovered from his injuries, received a medical discharge and flown back to Canada, where he later married, had five children and moved to Florida, keeping in contact with George Colbourne, who rang him every year on August 12 to thank him for saving his life on a lonely Irish bog, a lifetime ago. Bob had decided to do a little research into his father"s Airforce career, and had stumbled upon the Squadron records. He knew very little of the crash, and nothing of his modest father"s heroic rescue of Colbourne. He sent a reply to the website, stating that as his father had been helping him in the yard that morning, and notwithstanding a Lazurus-like reincarnation, he had not died in England on August 14, 1944, as the Squadron notes reported. Chuck had missed out on over 50 years of squadron reunions thanks to an erroneous report in the records. He had no idea that there was such interest in those based at Castle Archdale: "I didn"t have a clue- I thought that we were all forgotten. Joe here, he got after me right away- I got a letter within a week from him."

He also got in touch with the courageous Alex Platsko, now Dr Alex Platsko, who lives in the prestigious Pebble Beach resort in California. The two old comrades talked together for the first time in 58 years a few months ago, while Chuck ordered his Squadron badge, an honour he had neglected for over half a century.

This has been a year of amazing discovery for both Chuck and Bob, who accompanied his father on his emotional return to Fermanagh and to Cashelard. Under the gentle guidance of Joe, they have revisited so many areas of huge significance for Chuck- the well kept war graves in Irvinestown where his three comrades are buried; Castle Archdale with Breege McCusker; the Shiel Hospital in Ballyshannon where Chuck asked the staff if he owed them anything and joked that he had "an outstanding bill from "44"; and finally, most emotionally of all, the site at Cashelard where Sunderland NJ175 crashed 58 years ago to the day.
Full of praise for the people of Fermanagh- "a wonderful race", Chuck returns this week to Florida, laden with gifts such as a mounted piece of the wreckage of his plane, a framed citation commemorating his bravery, a copy of the memorial plaque erected to the memory of his fallen comrades, and a replica model of the planes in which he soared above the seas, risking his tomorrow for our today.

Having been reaquainted with his squadron and returned to the site of his wartime experiences he admits to being overwhelmed with his time in Fermanagh. As far as Castle Archdale, Cashelard and more particularly, Flying Boats go, he has just one disappointment, and he is not the only one: "It"s a shame there isn"t one for you guys to look at, you know? They"re all on the bottom of the lake. Isn"t that crazy?"

Taken from "Commonwealth Plots in Irvinestown County Fermanagh"
www.ww2talk.com/forum/war-grave-photographs/15812-commonw...
i265.photobucket.com/albums/ii221/lisset158/DSCF3115.jpg
The injuries to the crew Killed F/lt E.C. Devine ( Pilot ) aged 22.
( Buried Irvinestown Church of Ireland ).
P/O. J R Forrest W.Op / AG.
( Buried Irvinestown Roman catholic Churchyard).
F/O. R T Wilkinson Pilot aged 22.
(Buried Irvinestown Church of Ireland).

Surviving crew members. Sgt Allen ( Navigator).
Severe head injuries , burns to hands and legs.
Sgt Jeal. ( Flt/Engineer).
Fracture to spine , extensive burns to his hands and face.
Sgt Colbourne (A/G).
Head injury , fractured right leg.
Sgt Platsko. ( 2nd Pilot).
Head injury.
Sgt Oderskirk.(W.Op/ AG).
hand and facial injuries.
Sgt.Clarke (FME/AG).
Compressed fracture of the spine.
Sgt Singer ( A/G).
Fractured left arm.
P/O A. Locke.
(W.Op/AG).
Head injury.

Post Processing: light balance, equalization, sharpening





Amtrak P42DC No 5 discharges its cargo at Niagara Falls

Image by JohnGreyTurner


Morse at Hospital

Image by Nickster 2000
Morse enjoying I nice (and expensive) cup of coffee before being discharged at lunchtime.

They said "see you later" as we left!

[taken on the Sony cybershot DSC-200 snappy cam]