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
he engine were as follows: bore ofcylinder, 32 in.; stroke, 5 ft. At the time Fig. 188 wastaken the engine was making 62 E. P. M. and the boilerpressure was only 50 pounds. A 30 spring was used.Although the load on the engine was very light at the time. 504 Steam Engineering yet the diagram served… … 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
