The practical telephone handbook and guide to the telephonic exchange (1906)
Poole, Joseph · New York, Macmillan Co. · leaf 337
Fig. 312 and except for starting purposes would not need to beextended from the rotor itself. By a special startingwinding of the field magnets, and a special connection ofthe armature coils, these machines are made self-starting,even when a load is left on the machine. The Heyland Motor.—This is… … I 3 RUNNINGI §r-COILS
Telephone
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