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 1333
1297 1298 Steam Engineering to the other. Wlien the central rod is raised the carbonblocks C. C. enter between the springs and make the contact,closing the circuit. When lowered it opens the circuit. Thusfar the action of the switch is similar to the ordinary switch,but in order to prevent the… … Fig. 604type i westinghouse otl switch Fig. 603. Oil switches are made in many different styles,but the one feature of the complete submersion of all liveparts in oil, governs all. They are also as a rule held in theopen position, either by gravity or by special locking mechan-ism consisting of a…
