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 517
Fig. 189 made of it, as will be seen by referring to Fig. 189. Thereducing motion was a pantograph, and as it is very easyto vary the travel of the paper drum with this motion^diagrams of different lengths were taken until the one which … Fig. 190 appeared to be the most satisfactory was obtained. Theslight hump in the expansion curve immediately after cutoff, was probably caused by a speck of dirt or grit whichmomentarily checked the indicator piston on the down Diagram Analysis 505 stroke. The compression on the crank end is not…
