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 400
f two things,either to increase the outside lap, which would have atendency to cause admission to occur too late, or the angle<t1 advance may be increased sufficient to cause cut off to Valves and Valve Setting 387 take place at half stroke^ but to do this alone would causeadmission to occur too… … Fig. 129 vance^ A B C, is now SO-*^, where before it was 30^, as inFig. 125. The valve is central when the crank is at position 1;the high point of the eccentric being at point 4. The out-side lap, which before was 1 in., has had 7/16 in. added 388 Steam Engineering to it, making it 1 7/16 in. When…
![An illustration from Vnderweysung der Messung : mit dem Zirkel vn[d] Richtscheyt in Linien, Ebnen vnnd gantzen Corporen (1525)](https://img.insideoutlibrary.com/img/200/ia-vnderweysungderm00drer-23-34.webp)
