GB439966A - Improvements in and relating to flexible couplings - Google Patents

Abstract

439,966. Universal joints. THOMAS, C. 0., 4225, Beaconsfield Avenue, Montreal, Canada. June 18, 1934, Nos. 18041/34 and 17236 /35. [Class 80 (ii)] A flexible shaft coupling comprises a pair of hub members arranged in substantially axial alignment and having lugs formed thereon, a casing enclosing and capable of rotary movement independent of the hub members, and leaf-spring members forming a driving connection between the hub members and being anchored at each end in the casing, so as to be incapable of circumferential movement relative to the casing. In the form shown in Figs. 1 and 3, curved springs 29 are mounted in pockets 28 in the casing 35 and are engaged in grooves 26 in hubs 23, 24 on the shafts to be connected. The casing 35 has welded endplates 32, 33, the plate 33 being journalled on the hub 24, while the plate 32 is loosely mounted with packing 40 on the hub 23 to permit misalignment of the shafts. The springs may be assembled under initial stress. Straight springs 29 spaced apart and engaging curved grooves 26 may be employed. The outer surface of the hub 23 may engage the casing and be of spherical form with its centre at the axis of rotation. In the form shown in Fig. 8, the hubs are formed with lugs 46, 47 respectively, and transverse springs 52 are inserted in slots 51 in the lugs, and in the space 50 between the lugs, and have their ends retained in pockets 54 in the loose casing 53. Specification 323,288, [Class 80 (ii)], is referred to.