GB615907A - Vibrator - Google Patents

Abstract

615,907. Vibratory mechanism. WALTER, G. Dec. 21, 1945, No. 34803. Convention date, Dec. 21, 1944. [Class 80 (iv)] In a vibratory mechanism in which one element is rotated and rolled on another element, the surface of one of the elements being circular and the surface of the other non- circular, the non-circular surface comprises a zone with a radius of curvature equal or almost equal to the radius of said. circular surface which is bounded by zones of a different radii in such a manner that the tangents of the curves at the connecting points coincide. As shown in Fig. la, the element 1 has a circular internal surface which rolls on a fixed element 2. The surface of the latter is composed of zone AB of equal curvature to the circular surface of element 1, zones BC and DA of a smaller radius of curvature, and a connecting zone CD of an intermediate radius. This arrangement is stated to provide, as the member 1 rolls from point A to point B, a force of considerable value for effecting the vibratory movement. In Fig. 3, the stator 74 of an electric synchronous motor is mounted in a frame 73 by bearings 79 and prevented from rotating by a link 83. The rotor 76 is provided at each end with cavities 86 which roll on pivots 87 secured to the frame 73. The coacting surfaces of the cavities 86 and pivots 87 are formed as previously described so that a vibratory effect is produced on the frame 73 on rotation of the rotor 76. The Specification as open to inspection under Sect. 91 describes a circular element driven from a flexible shaft through gearing and a universal joint to roll around a non-circular surface of a recessed element which is thus vibrated. This subject-matter does not appear in the Specification as accepted.