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 401
onthe center at 2, the lead is 14 i^- It will readily be seen at this point that by increasingthe outside lap still more the lead can be diminished^ andthe point of cut off made still earlier^ but this would resultin a still further reduction of the power of the engine,which ha^ already been… … Fig. 130 is open the distance A a> which is as far as the outside lapwill permit. With the crank at point 4 cut off occurs.But with the increased angular advance and the insidelap remaining as it was before^ viz., I/2 in., release wouldoccur too early. Therefore it will be necessary to…