Page:Canadian patent 30172.djvu/4

 the principle of the action or operation of these devices has aparently been so little understood that their proper construction and use has, up to the present time, been attended with various difficulties and great expense. Transformers are very liable to be injured and burnt out, and the means resorted to for curing this and other defects have invariably been at the expense of efficiency.

This invention comprises a method of and apparatus for the conversion and distribution of electrical energy which is not subject to the objections above alluded to and which is both efficient and safe. The result is obtained through a conversion by true dynamic induction under highly efficient conditions and without the use of expensive or complicated apparatus or moving devices which in use are liable to wear out or require attention.

This method consists in progressively and continuously shifting the line or points of maximum effect in an inductive field across the convolutions of a coil or conductor within the influence of said field and included in or forming part of a secondary or working circuit.

For carrying out this invention a series of inducing coils and corresponding induced coils is provided which, by preference are wound upon a core closed upon itself. Such a core, for instance, as is used in the Grammetype of dynamo-machine. The two sets of coils are wound upon this core side by side or superposed, or otherwise placed in well known ways to bring them into the most effective relations to one another and to the core.