GB1132705A - Railway vehicle buff and/or drawgear - Google Patents

Abstract

1,132,705. Railway vehicle buff and/or draw gear. F. H. LLOYD & CO. Ltd. 23 June, 1966 [23 July, 1965], No. 31618/65. Heading B7T. Springs 28 and 31 are contained by stools comprising pairs of arms 43 integral with inner end plates 29, 30 and connected by bolts 26 to removable end-plates 25, 29, so that buff or draw loads cause the arms to interdigitate and the springs to compress in parallel. The springs may comprise rubber springs, a single steel spring or nest of helical steel springs, an hydraulic dash-pot, ring springs or such combinations of these components, and an auxiliary spring 19 provided to centralize the gear may be adjusted by means of an axially movable sleeve housing the spring but arranged to be spaced from an end-plate 25. In a modification, Fig. 1 (not shown), the spring 19 may be loaded by compressing it within a space defined by the end of a yoke (16) which is slightly spaced from a plate 25, the compression being effected by axially moving a cup (38) within the spring. By moving the cup completely into the end of the yoke the spring 19 may be retracted to allow the springs 28, 31 and the arms 43 and their endplates to be removed laterally from the gear. The springs 28, 31 may be supported by the draw-bar 17, or as in Fig. 1 (not shown), which employs a yoke (16), by means of spindles (42) attached to the plates 25. In Figs. 1 and 2 (not shown), a Norwegian hook is mounted on an intermediate draw-bar (2) movable within a sleeve (3) and connected by the pivot pin 18 to the forked end of the yoke (16), abutting shoulder surfaces (5), (6) and a convex striker plate 46 being provided. In Fig. 8 (not shown), a disc hook coupler is provided with an intermediate bar (2) integral with its sleeve (3) and is supported by a bracket (44) and plate (45). Other couplers are also shown employing the gear.