SYNCHRONIZATION OF TELEVISION 



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instead of a separate coil for each tooth. Fig. 1 shows a photograph 

 of the assembled motor and Fig. 2 an inside view of the stator and 

 rotor. 



Fie. 2 — Motor disassembled 



In the preliminary experimental work two of these machines were 

 directly connected (Fig. 3), permitting either machine to act as a 



Fig. 3 — Synchronization system over short wire line 



synchronous motor loading down the other machine. Each machine 

 was driven by a shunt d-c. motor having inherently poor regulation, 

 the d-c. motors furnishing the power and the a-c. machines transferring 



