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 1133
thearm back. In the meantime^ rock the brushes forward orbackward and keep the sparK about the proper lengthysay i/§ in., at full load to % in., on short circuit. Gradu-ally the rheostat arm wall settle, the spark will become con-stant, and the machine will give its proper current. Thenclamp the… … Fig. 476 care of the machine from the start. By allowing thecontroller to start the machine, a trifle longer spark is ob-tained than by the other method, unless the machine is runfrom the beginning on a very full load. The machine will require ai trifle longer spark on lightload, or on bad…
