GB473378A - Improvements in or relating to clutches - Google Patents

Abstract

473,378. Friction clutches. BORG & BECK CO., Ltd., and HIGGS, C. W. Aug. 1, 1936, No. 21365. [Class 80 (ii)] In a clutch plate comprising a disc carrying a facing at each side, wherein at least one facing is mounted on one set of resilient tongues struck out from or secured to the disc and, after a predetermined amount of compression, it coacts with another set of tongues so as to give a two-stage action, the tongues of each set are identical in shape and size, are offset by equal amounts from the plane of the disc, and are distributed across the radial width of the facing, so that the latter tends at all times to remain parallel with the disc. As shown in Fig. 1, the disc 10 is formed at intervals with gaps so shaped that each provides a group of four tongues 16 .. 19 of identical shape and size. The tongues are deflected laterally, the diagonally-opposite tongues 16, 18 being deflected to a greater extent than the tongues 17, 19, and one facing 11 is attached to the tongues 16 by rivets 21. The tongues 16, 17 are interchanged in successive groups, and the tongues of each group may all converge on a single point. The other facing may be rigidly secured to the disc by rivets 13, or the groups of tongues may be bent alternately to opposite sides of the disc so as to afford a two-stage resilient mounting for both facings. As shown in Fig. 8, the disc 10 is cut so as to provide groups of six tongues 27 ... 32, of which the tongues 27 .. 30 are equally deflected while the tongues 31, 32 are deflected to a less extent. The facing 11 is secured by rivets 25, 26 to the tongues 27, 28. Specification 434,019 is referred to.