a shifting of the poles of the motor through three hundred and sixty degrees.
In the particular modification shown in figure 15, or in others constructed on a similar plan, the number of alternating impulses resulting from one revolution of the generator armature is double as compared with the preceding cases and the polarities in the motor are shifted around twice by one revolution of the generator armature. The speed of the motor will, therefore, be twice that of the generator.
The same result is evidently obtained by such a disposition as that shown in Figure 17 where the poles of both elements are shifted in opposite directions.
Again, considering the apparatus illustrated by figure 9, as typical of the invention, it is obvious that since the attractive effect upon the disk D is greatest when the disk is in its proper relative position to the poles developed in the ring R, that is to say, when its ends or poles immediately follow those of the ring, the speed of the motor for all loads within the normal working limits of the motor will be practically constant.
It is clearly apparent that the speed can never exceed the arbitrary limit as determined by the generator, and also that within certain limits, at least, the speed of the motor will be independent of the strength of the current.
It will now be more readily seen from the above description how far the requirements of a practical system
