Abstract: A fastener for sliding doors or windows comprises one or more bolt assemblies 8 having spring loaded bolts with heads 15 mounted in housing set into the stile 7. The fastener also comprises a receiver assembly 9 including a pair of rails 23,24 having similar aligned key-hole openings 25,26 respectively. The outer retainer rail 23 is slidable relative to the inner rail by operation of an actuator 27 controlled by a handle assembly 10. When the bolt heads 15 are received in the aligned openings 25,26 on closing of the stile 7 to the jamb, the handle 29 of the assembly 10 is turned causing the retainer rail 23 to move downwards to trap the heads 15 of the bolt in the narrower parts of each opening 25 in the retainer rail 23. The handle assembly 10 preferably includes a lock to prevent the handle 20 being rotated after locking. The spring loaded bolts provide a "buffer" action and prevent damage to the receiver assembly even if in the fastening position.

Abstract: In a casement window, the casement fastener comprises a pivotal lever handle 5 mounted on the sash 2 through a plate 7 and a keeper 6 mounted on the casement frame 1. The keeper 6 has two similar lugs 14,15 symmetrically disposed lengthwise of the keeper plate 11. The lever handle 5 has an abutment face 10 to engage either lug 14,15 for fastening the sash, and a through slot 9 in which either lug 14,15 may be received to hold the sash in a ventilating position. The fastener may be used for right or left hinged sashes, and by the special form of keeper and handle, the fastener can be used for any required attitude of installation without concern for specially handed keepers or lever handles.

Abstract: A roller assembly for supporting sliding doors on a track or rail comprises a plurality of short rollers (10) which are confined to run around an oval track (9a) formed in a two part housing (7). Some of the rollers (10) are engageable with the track through an elongate slot (13) in the base of the housing (7) so that load is distributed over several rollers. The housing (7) is mounted for adjustment in a carrier (5) which can be mounted on a door. The adjustment permits variations in height or levels to be accommodated.