International Library of Technology; A Series of Textbooks for Persons Engaged in the Engineering Professions and Trades, or for Those Who Desire Information Concerning Them Volume 6

International Library of Technology; A Series of Textbooks for Persons Engaged in the Engineering Professions and Trades, or for Those Who Desire Information Concerning Them Volume 6

List price: US$21.14

Currently unavailable

Add to wishlist

AbeBooks may have this title (opens in new window).

Try AbeBooks

Description

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1902 edition. Excerpt: ...revolve, the link has a continued vibratory motion about its point of suspension and a swinging motion due to the vibration of its hanger. The result is more or less vertical motion, according to the point at which the hanger is attached to the link, which, if excessive, will cause undue wear between the link and the block (K in Fig. 466). This motion between the block and the link is called the slip. Ordinarily, the link is suspended at one of three points--the center of the link arc, the center of its chord, or at the lower end of the link. When at the first point, the slip is slight in mid-gear, and increases both ways; at the second, the slip increases from mid-gear, but is always greater than in the former case; while, at the third point, the action is good when the block is in the lower half of the link, but when in the upper half the slip is excessive. When the engine is to be run with the block at some one point in the link nearly all the time, the latter should be suspended from that point to reduce the slip as much as possible. Both the hanger which supports the link and the lever to which its upper end is attached should be as long as possible. The object should be to so suspend the link that the saddle pin will always move approximately parallel to the center line of motion. 1661. Proportions of the Link.--The length of the link should not be less than 2i to 3 times the throw of the eccentric; if less, it is difficult to reverse the engine when the piston is near the end of the stroke, as the link then makes an obtuse angle with the valve stem. By the length of the link is meant the length / (Fig. 470) of the chord connecting centers of the link block when it is in the two extreme positions. The radius of the link is generally made...show more

Product details

  • Paperback | 122 pages
  • 189 x 246 x 7mm | 231g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 123653364X
  • 9781236533647