Nikola Tesla Patents
One such device of familiar construction, which will serve to convey a clear understanding of this part of my invention and enable a person skilled in the art to apply the same, is illustrated in the annexed drawing. It consists of a cylinder A of insulating material which is moved at a uniform rate of speed, by clockwork or other suitable motive power, and is provided with two metal rings, B B', upon which bear brushes a and a', which are connected respectively, in the manner shown, to the terminal plates P and P¹ above referred to. From the rings, B B¹, extend narrow metallic segments, s and s' which, by the rotation of the cylinder A, are brought alternately into contact with double brushes, band b', carried by, and in contact with conducting holders h and h; which are adjustible longitudinally in the metallic supports D and D', as shown. The latter are connected to the terminals T and T' of a condenser C, and it should be understood that they are capable of angular displacement as ordinary brush supports. The object of using two brushes, as b and b in each of the holders h and h; is to vary at will the duration of the electric contact of the plates P and P¹, with the terminals T and T' to which is connected a receiving circuit including a receiver R, and device d,of the kind above referred to, which performs the duty of closing the receiving circuit at predetermined intervals of time and discharcing the stored energy through the receiver. Cancelled. рибыв брат In the present case this device consists of a cylinder made partly of conducting and partly of insulating material, e and e' respectively, which is rotated at the desired rate of speed by any suitable means. The conducting part e is in good electrical connection with the shaft S, and is provided with tapering segments f f,upon which slides a bruch k supportcd on a conducting roù 1, capable of longitudinal adjustment in a metallic support . Another brush is arranged to bear upon 9 303
