Scientific American Volume 11

Scientific American Volume 11

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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. 1855 edition. Excerpt: ...f, upon them, and the outer sides of the pulleys, S, have also corresponding teeth or projections, g, upon them, see fig. 2. tion. The feed motion is given the shaft, Q, by the cross belt, W, passing around pulley, X, of the inner cone shafi, M, and the gigging motion of the shaft, Q, is given by the belt, T, passing around pulley, V, of the outer cone 551"; M-As the saw shaft, B, rotates, motion il Kivw the governor, D, by the belt, E, and motion is given the cones, L L, by the belt, at, and motion is given the carriage on which tho log is placed by the shaft, Q, as previously. stated, motion being given the shaft, Q, by the belt, T. When the butt or thick end of thelog is being sawed, the saw has considerable work to perform, and consequently the carriage moves moderarely along, and gradually increases in speed as the thickness of the log diminishes, in consequence of the arm, K, mov. ing the belt, N, along on the cones, L L, the 8-rm, K, being operated by means of the rack bar, J, and pinion, c. If the saw, 0, binds, and rotates very slowly in consequence, the collar, G, on the governor shaft will be depressed, "Ed the "PP" Wheel, F, will gear into the pinion, H, and a reverse motion will be given the "ma K1 5 thfll the belt, N, will cause the in-' ner cone to rotate slower than the outer one, and diminish the feed, and if the saw still continues to bind so as to bring it down to 1953 than its required number of revolutions, the arm, K, will cast the belt, N, ofl' on a. 1005; Pulley 8% the large end of the inner cone, L and the feed will then be stopped until tho carriage is gigged back and the saw relieved. The above invention is extremely simple, and is sclf-acting; the log is fed to the saw 8;...
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Product details

  • Paperback | 984 pages
  • 189 x 246 x 49mm | 1,719g
  • United States
  • English
  • black & white illustrations
  • 123684808X
  • 9781236848086