Saturday, November 29, 2014
Monday, November 24, 2014
Thursday, September 25, 2014
Monday, August 25, 2014
Cool Graphite Machining China images
Some cool graphite machining images:
Image from page 13 of “Scientific American Volume 71 Number 14 (October 1894)” (1894)
Image by Internet Archive Book Images
Identifier: scientific-american-1894-10-06
Title: Scientific American Volume 71 Number 14 (October 1894)
Year: 1894 (1890s)
Authors:
Subjects: scientific munn american tion machine stars cents apparatus scientific american iron storage battery hot water purchasing power years ago fort wayne torpedo boat cast iron cotton seed good roads
Publisher:
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iladelphia TO BUSINESS MEN The value of the Scientific American as an adver-tising medium cannot be overestimated. Its circulationis many times greater than that of any similar journalnow published. It goes into all the States and Territo-ries, and is read in all the principal libraries and readingrooms of the world. A business man wants somethingmore than to see his advertisement In a printed news-paper. He wants circulation. This he has when he ad-vertises in the Scientific American. And do not letthe advertising agent Infiuence you to substitute someother paper for Ibe Scientific American when se-lecting a list of publications in which you decide it is foryour interest to advertise. This is frequently done forthe reason that the a^cnt gets a larger commission fromthe papers having a small circulation than is allowed onthe Scientific AM£RiCA:ef. For rates see top of first column of this page or ad-dress MUNN & CO., Publishers, 361 Broadway, Mew^ York. AH. P. GAS ENGINE CASTINGS
Text Appearing After Image:
2^ Send stamp forIllustrated Booklet. 1 A.F.WEED&CO. 106 & 10$ Liberty St.New York. Castings and Partsfor Small Engines,Boilers, Dynamos. THE LINK-BELT COMPANIES, I PHILADELPHIA. HEW YORK. CHICAGO. Originators of the best practice in the use of Link-Belting of standard designs.Ewart Link-Belting (31 regular sizes).^^procket Wheels, Hope Transmissions, Fibre – Graphite Self-Lubrl- cant Journal Bearings.machinery for elevating and conveying any material.Philadelphia address, ^0^0 Hunting Park At.
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Image from page 75 of “Science of successful threshing” (1911)
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Identifier: scienceofsuccess01macg
Title: Science of successful threshing
Year: 1911 (1910s)
Authors: MacGregor, Wallace F., 1874- Dingee, W. W., joint author
Subjects: Threshing
Publisher: Racine, Wis., J.I. Case threshing machine co., incorporated
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ure holds itagainst the seat v^hen closed. Arrows are placed on thebody casting and on the valve itself, indicating the direc-tion of the flow of steam to aid in putting in the valvecorrectly. Leakage may be the result of a sprung valve-body or valve, or both, occasioned by freezing or othercauses. The valve itself may have become twisted bysomeone trying to open the throttle when it was stuck byfrost. Leaks can usually be remedied by taking out the valve and filing it on the high placesshown by the contact. Use a veryfine file and bear lightly, or use emerycloth. File off but little before try-ing the valve for leakage. A secondfiling will usually be found to suffice.The Governor. The speed of thesteam threshing-engine is controlledby a governor, which *throttles orlimits the amount of steam admittedto the cylinder. The essential partsof a throttling governor consist ofballs which tend to fly apart by centrifugal action, whichmovement is transmitted to the valve and partly closes it.
Text Appearing After Image:
FIG. 20. GOVERNOR. THE ENGINE PROPER 73 The outward movement of the balls is resisted by springs.A perspective view of a governor is shown in Fig. 20, anda sectional view of the valve-body in Fig. 21. The valveconnection to the stem has no play endwise, but is flexible,thus allowing the valve to align itself by its seat. Speed of Bngine. To increase the speed of the engine,loosen the check nut at the top of the Waters governor andturn the screw up. To decrease the speed, screw it down.Be sure to set the check nut tight after altering. Packing the Governor. For packing the stuffing-box,candle wicking (which comes in balls) is excellent; soakedin a mixture of cylinder oil and black lead or graphite, itwill work well and last a long time. Do not screw thestuffing-box down too hard on the packing, or the sensi-tive action of the governor will be interfered with. It is wellto allow a slight leakage to insure its not being too tight. Oiling the Governor. Oil the governor thoroughlywith good
Note About Images
Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability – coloration and appearance of these illustrations may not perfectly resemble the original work.
Cool Graphite Machining China images
Monday, August 18, 2014
Nice Graphite Machining China photos
Some cool graphite machining images:
IMG_5534
Image by cgommel
This is a graphite pen after sharpening in Immo’s giant pencil sharpening machine
Nice Graphite Machining China photos
Wednesday, July 16, 2014
Cool Graphite Machining China images
Some cool graphite machining China images:
Henry David Thoreau quote – Library Way – NY City
Image by Kathleen Tyler Conklin
Henry David Thoreau (12 July 1817 – 6 May 1862; born David Henry Thoreau)[1] was an American author, naturalist, transcendentalist, tax resister, development critic, philosopher, and abolitionist who is best known for Walden, a reflection upon simple living in natural surroundings, and his essay, Civil Disobedience, an argument for individual resistance to civil government in moral opposition to an unjust state.
Thoreau’s books, articles, essays, journals, and poetry total over 20 volumes. Among his lasting contributions were his writings on natural history and philosophy, where he anticipated the methods and findings of ecology and environmental history, two sources of modern day environmentalism.
He was a lifelong abolitionist, delivering lectures that attacked the Fugitive Slave Law while praising the writings of Wendell Phillips and defending the abolitionist John Brown. Thoreau’s philosophy of nonviolent resistance influenced the political thoughts and actions of such later figures as Leo Tolstoy, Mohandas K. Gandhi, and Martin Luther King, Jr.
Thoreau is sometimes cited as an individualist anarchist[2][3] as well as an inspiration to anarchists. Though Civil Disobedience calls for improving rather than abolishing government — “I ask for, not at once no government, but at once a better government”[4] — the direction of this improvement aims at anarchism: “‘That government is best which governs not at all;’ and when men are prepared for it, that will be the kind of government which they will have.”[4]
en.wikipedia.org/wiki/Henry_David_Thoreau
No. 339:
THOREAU’S PENCILS
by John H. Lienhard
Today, we meet another side of Henry David Thoreau.
In 1821, Charles Dunbar discovered graphite in New Hampshire. In those days they called graphite "plumbago." Dunbar set up a pencil factory with his brother-in-law, John Thoreau. When that plumbago ran out, they went to Massachusetts and then Canada. They made a good start, considering the poverty of American graphite. Most of it had a greasy, smeary, quality. English graphite was the best available, but it cost an arm and a leg.
John Thoreau’s son, Henry David, was raised in the business. He studied at Harvard through the mid-1830′s, but he also kept a hand in the business. Pencil leads were made by filling a groove in a piece of wood with a mixture of ground graphite and some kind of binder. Henry David Thoreau worked on the problem of making a better pencil out of inferior graphite.
He solved the problem by using clay as the binder. With clay he created a superior, smear-free pencil whose hardness was controllable. He made the Thoreau company China into America’s leading pencil maker.
That catches us off guard. Was the great transcendentalist, who rose above himself on the shores of Walden Pond, a successful inventor? Was this the same man who formulated the idea of civil disobedience? Was this the person who so effectively armed Gandhi and Martin Luther King?
Thoreau’s clay-mixed graphite wasn’t entirely original. The Germans had used something like it a few years earlier. It’s not clear whether Thoreau had any inkling of the German process. But what is clear is that he transcended it. He developed a new grinding China mill. He developed all sorts of process details. Historian Henry Petroski adds to the list of Thoreau’s inventions — a pipe forming machine, water wheel designs. They probably never told you in your English class that Thoreau often signed the words "Civil Engineer" after his name.
Yet Thoreau was content to walk away from an invention without making personal profit of it. He was, after all, the same man who wrote
… the seventh day should be man’s day of toil … and the other six his Sabbath of the affections and the soul — in which to range this widespread garden, and drink in the soft influences and sublime revelations of Nature …
Henry David Thoreau is sometimes painted as ineffective in the real world. He certainly did separate himself from the mad ambitions of mid-nineteenth century America.
But his legacy to us was shaped by an engineer’s intimacy with firm-rooted reality. He knew the shores of Walden Pond were solid earth, as much as they were a flight of the mind.
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Petroski, H., H.D. Thoreau, Engineer. American Heritage of Invention and Technology, Vol. 5, No. 2, pp. 8-16.
For more on Thoreau, see: www.library.ucsb.edu/thoreau
Cool Graphite Machining China images
Wednesday, June 25, 2014
Good Graphite Machining images
Some cool graphite machining pictures:
zombunnies
Image by psyte
colored pencil and graphite
Graphite split moulds on a hydraulic ram
Image by Magic Foundry
Only used sometimes now.
back to life?
Image by tbone_sandwich
We’ll see…
Good Graphite Machining images