GB781023A - Improvements in or relating to one-way engaging device - Google Patents

Abstract

781,023. One-way clutches. BORG-WARNER CORPORATION. June 1, 1955 [June 21, 1954], No. 15704/55. Class 80 (2). Cylindrical inner and outer races 10, 11 of a one-way engaging device, such as a clutch, of the kind having tilting sprags 23 biased into wedging relation with the races by a unitary spring 22, are maintained concentric by a number of discrete circumferentially spaced plain or roller bearings 35 circumferentially aligned with the sprags and engaging the races. The one-way clutch in Fig. 1 comprises tilting sprags 23 maintained in " fully-phased " relation, as described in Specification 763,353, by engagement in apertures in rigid inner and outer cages 21, 19 and in an interposed spring-strip sprag-energizing cage 22, as described in Specification 713,308. The bearings are plain bronze slipper-blocks 35 having inner and outer bearing surfaces curved to conform to the races. Either the inner or outer face of each block may have two ledges 45 fitting between the adjacent race and cage, and the opposite face may have one such ledge. Openings 42 in any one cage, e.g. 21, receive the bearing blocks 35 with little clearance whilst openings 27, 39 in the remaining cages are wide to permit sprag movement without these races contacting the bearing-blocks. In Fig. 5, not shown, the spring-strip cage 22 is replaced by a continuous spring passing through inclined openings in the sprags and straight openings in the bearing- blocks. In Fig. 6, not shown, the bearing-blocks are each formed with a lip which is bent over the outer surface of the inner cage 21 to retain the parts assembled. In Figs. 10-12, not shown, the bearings are rollers retained in either the inner or outer cage by transverse walls. In Figs. 13 and 14, not shown, rollers are retained in apertures in the spring strip cage 22 by projections on the latter engaging depressions in the ends of the rollers.