Nikola Tesla Patents
114 V circuit controller containing two terminals, or sets of terminals, movable with respect to each other into and out of proximity, and I provide means whereby the intervals between the periods of close approximation during which the spark passes may be adjusted, so that, when used in a system supplied by a source of alternating current, the periods of make and break may be timed with reference to a phase of the current wave or impulse. Referring to the drawings which illustrate, in its preferred form, the improvement above referred to to (Fig 1 is a view partly in elevation and pertly in section of a generator arranged to give an alternating current with the circuit controller mounted on its shaft. Fig. 2 is a section of the controller of Fig. 1 on line xx of said figure. Fig. 3 is a diagram illustrating the system or apparatus as a whole. Figs. 4 and 5 are sectional views of a modified form of circuit controller. P A designates, in Fig. 1, a generator having a commutator A' and brushes A" bearing thereon, and also collecting rings B, B, from which an alternating current is taken by brushes B' in the well understood manner. The circuit controller is mounted, in part, on an extension of the shaft C of the generator, and in part on the frame of the same, cr on a stationery sleeve surrounding the shaft. Its construction, in detail, is as follows: D is a metal plate with a central hub D' which is -2
