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. 1911 Excerpt: ...4-4, through which the lower end of the hanger is free to swing; that the connection to the valve-stem shall be on the straight line K L through which that point moves; that the lower end shall be on the arc s t that can be swept through by the union-rod and the connection of the radius-rod to the lap-and-lead lever. ...
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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. 1911 Excerpt: ...4-4, through which the lower end of the hanger is free to swing; that the connection to the valve-stem shall be on the straight line K L through which that point moves; that the lower end shall be on the arc s t that can be swept through by the union-rod and the connection of the radius-rod to the lap-and-lead lever. By "Instantaneous Position" is meant the position occupied at any given instant of time or instant in the stroke or motion of the engine. The swinging motion of the radius-rod hanger produces an up-anddown motion, causing the link-block to slip in the link, and the holding of the lap-and-lead and valve-stem connection in a straight line (K L Fig. 101) at all points and for all inclinations of the lap-and-lead lever pro duces an up-and-down motion of the connections with the radius-rod and the union-bar. The easiest method of making this location of the lap-and-lead lever is to make two templates like those shown in Figs. 104 and 105. Fig. 104 should be made with the distance from A to C equal to the length of the radius-rod with the line B so marked on it that the point indicated on the lower edge will be that of the connection with the hanger. Fig. 105 shows a similar template of the lap-and-lead lever where the two ends D and F, respectively, mark the points of connection of the valve-stem and unionbar and E the point of connection with the radius-rod. To apply these templates, first lay out the centre line of the link, G (Fig. 106), for the position of the piston to be investigated. Locate the point of suspension of the radius-rod hanger at H and draw the arc a b through which its lower end must oscillate. Then locate the point of attachment of the union-bar to the cross-head, /, and draw the arc c d through which its point of atta...
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Add this copy of Forney's Catechism of the Locomotive, Volume 2... to cart. $53.36, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Hialeah, FL, UNITED STATES, published 2012 by Nabu Press.
