GB172641A - - Google Patents

Abstract

172,641. Seigneur, L. Dec. 9, 1920, [Convention date]. Addition to 145,695. Clutches, friction.-In expanding-band friction clutches, balls or rollers d are carried in slots in a sleeve c secured to the driven shaft a and are pressed by a sliding cone sleeve connected by rods i to the clutch collar g into contact with 7 cam surfaces x on loose blocks e retained laterally in position by an encircling wire k and bearing against one or more clutch bands f engaging the driving-pulley b, the elasticity of the bands f being so calculated as to balance the action of centrifugal force. The bands are forced against the pulley b, the clutching action being increased automatically if slip occurs by the action of the cam surfaces x. The sleeve c is secured to the shaft bv grub screws and is moved into and out of working position on a sliding ball-race. The Specification as open to inspection under Sect. 91 (3) (a) states that two or more concentric bands f may be used, or a single band may be subdivided into several parts. This subjectmatter does not appear in the Specification as accepted.