GB623021A - Improvements in or relating to clutch or brake friction elements - Google Patents

Abstract

623,021. Brake-linings. AMUNDSEN, H. R. June 3, 1946, No. 16779. Convention date, May 8, 1944. [Class 103 (i)] [Also in Group XXIV] Curved clutch or brake friction elements 2, Fig. 2, of asbestos or other composition, cooperating with an external drum surface, are secured to a contractible carrier band by transverse guiding and clamping strips 3, Fig. 3, adjustably secured to the band and having dovetail groove connections 8 with the elements, which thus present unbroken frictional surfaces to the drum and may, when the appropriate strips 3 are slackened, be individually withdrawn and replaced with the band in position. In Fig. 5, the strips 3 are secured to the band 1 by nutted screws 4, the heads of which may be attached as by welding or brazing to the strips. The latter may bear on the sides of the grooves 8 through protecting metal plates 7, shaped to fit the grooves, and having turn-up tabs 9, Fig. 7, to locate the elements in position. The outer flange portions 10 of the plates 7 may be omitted. The elements 2 may be unitary or composed of a backing plate 12, Fig. 8, of metal or other suitable material, secured as by fusing to a facing part 11 of friction material. The Specification as open to inspection under Sect. 91 describes also a clutch or brake internal shoe construction in which asbestos combination facings 14, Fig. 9 (Cancelled), are secured to a shoe 13 by channelled dovetail clamping strips 17, which may be of brass, and by squareheaded bolts 18, the strips having milled external gripping edges 28, Fig. 11 (Cancelled). This subject-matter does not appear in the Specification as accepted.