Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise on the care and management of steam engines, boilers and electric machinery (1922)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 390
d the high-evSt point of the eccentric is at 60° on the return circle, apoint equivalent to 240° of the circle described by thecrank. Valves and Valve Setting 377 The fourth function is when compression begins at thehead end of the cylinder^ Fig. 120. The crank is now at150°, the piston being near… … Fig. 120 circle. At this point we can stud*y the effect o? inside lap,because if the valve has no inside lap, release on the crankend will begin almost at the same moment that compres-sion takes place at the head end, but by adding inside lap,compression can be caused to take place earlier and…