145 



Mordey machine was that it could be run 

 with a high-current density without fear. 

 It had occurred to him that if an iron 

 core were put into the Mordey machine, 

 and the field-poles were arranged to 

 come alternately, as in the Kennedy 

 machine, instead of opposite, the power 

 of the machine would be doubled without 

 greatly increasing the expense. He 

 agreed with Professor Forbes as to the 

 credit due to Messrs. Gaulard and Gibbs, 

 which, he thought, ought to be frankly 

 acknowledged. 



The Hon. Charles Parsons said, as the 

 calculations in the paper were based on 

 the sine-function, he would refer to a few 

 figures in connection with a bipolar 

 alternator, in which the sine-function was 

 nearly realized. "With two poles, and 

 one continuous coil, or two half-coils, as 

 on the drum of the armature, Fig. 8, the 

 electromotive force was a sine-function, 

 and the self-induction was considerable. 

 In a contemplated machine, the output 

 of which was intended t to be 75,000 watts, 

 the current to excite the magnets would 



