Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise .. (1916)
Swingle, Calvin F. (Calvin Franklin), b. 1846 · Chicago, F.J. Drake & company · leaf 1129
h a small belt running 1094 Steam Engineering around the armature shaft. (See Fig. 474.) By meansof magnetic clutches and bevel gears, a pinion shaft isrotated, which moves the rack and the rocker arm and soshifts the brushes on the commutator to maintain a sparkof about % in. on short circuit and… … To Clutch at F for Clockwise. To Clutch at E for Counter Clockwise. To Clutch at E for Clockwise.To Clutch at F for Counter ClockwiseChanged 6 June98. Fig. 475 The current for the magnetic clutches is regulated bythe controller. The controller consists principally of two magnets whichare energized…