American Machinist Volume 8

American Machinist Volume 8

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1885 edition. Excerpt: ...with all the changeableness of a crevasse in a intention on the part of the ubiquitous, emery or corundum wheel to push the oldfashioned grindstone out of use as a tool grinder. These whee.s are rigged in a frame the stone are covered. This rig must suit tool-grinders are actually put right in the middle of the shop, too, some of them oc How did we grind then? On a grindstone some '7" to 8" thick, which, when first mounted in its wooden frame, was some 5' or more in diameter. The stone stood in a little room at the extreme end of the shop, into which room the light was admitted through a single window at the front of the stone and by the doorway. The window was directly back of the man who ground correctly, according to Mr. Richards, and the use of the upward stroke of the stone, according to Mr. l Iobart, was unknown in those heathenish days. Besides a truing device, consisting of a cylindrical revolving serrated contrivance, was in the way of a rest at the back of the stone, and the window soon became smeared with mud from the grindstone. The main reliance for light was through the doorway, which, as there was a dead wall on one side of the shop, and on the other side the windows opened into the foundry, added to the fact that sometimes two or three men stood in or about the doorway waiting for a chance, with frequently two or three grinding at once (for the men who ground on along down to that truing device, were there), shed just sutficient light to keep as to whether he had accomplished what he undertook, until he had traveled back to his in chipping and filing. The rest on the wooden frame was a board a foot wide; sometimes a piece of iron or steel lay on this board. angle at which they wanted to grind a face, known more

Product details

  • Paperback | 1006 pages
  • 189 x 246 x 50mm | 1,755g
  • United States
  • English
  • black & white illustrations
  • 1236821351
  • 9781236821355