. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . nected with the throttle-valves or cut-offs of the engines, and the electro-magnet con-trolling all of the motors, substantially as setforth. 6. The combination, with the independent ro^engines, of the electrical governors, means forelectrically controlling-such governors simul-taneously, and means for throwing any one ofthe governors out of operation without affect-ing the action of the other governors, substan- n<tially as set forth. 7. The combination, with two or more inde-pendent engines and dynamo or magnet
. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . nected with the throttle-valves or cut-offs of the engines, and the electro-magnet con-trolling all of the motors, substantially as setforth. 6. The combination, with the independent ro^engines, of the electrical governors, means forelectrically controlling-such governors simul-taneously, and means for throwing any one ofthe governors out of operation without affect-ing the action of the other governors, substan- n<tially as set forth. 7. The combination, with two or more inde-pendent engines and dynamo or magneto elec-tric machines operated thereby and feedinginto the same conductors, of means for vary- n-fling the electro-motive force of the generators, as required by the addition or removal of trans- 1bating devices, and means for electrically con-trolling the throttle-valves or cut-off mechan-isms of the engines simultaneously, substan-tially as set forth. This specification signed and witnessed this19th day of October, 1882. THOS. A. EDISOK Witnesses: H. W. Seely,E. II. (No Model.) No. 273,492. T. A. EDISON. SECONDARY BATTEET. Patented Mar. 6,1883.
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