Cyclopedia of locomotive engineering, with examination questions and answers; a practical manual on the construction care and management of modern locomotives (1916)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & co., pub. for Sears, Roebuck & co. · leaf 122
Figure 55 i larch is slightly greater than the distance between theinside edges-of the steam ports, so that it does notentirely cover them when in its central position.Inside clearance is shown at B and B, Fig. 60. Thepurpose of inside lap is to delay the release of the … Figure 56 steam and to hasten compression. The amount ofinside lap is small, seldom exceeding J& of an inch,and for fast passenger engines it is better to havenone, as it causes the engine to be quicker. The pur-pose of inside clearance is exactly the opposite to thatof Inside lap. It hastens…
Locomotives
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