GB1179411A - Improvements in or relating to Lock-Fitted Handle Units for Actuating Door Bolts - Google Patents

Abstract

1,179,411. Sliding bolts; door handle units. WEST ALLOY DIECASTINGS Ltd. 20 Jan., 1967 [21 Jan., 1966], No. 2979/66. Heading E2A. The stem 3 of a handle 4 is axially slidably in a casing 2 for movement between a projected position, Fig. 2, in which the handle can be turned for operating two door bolts 18, and a retracted position, Fig. 1, in which the handle is located in a recess of the handle surround 6 and cannot be turned, automatically fastening means, e.g. spring loaded latch bolt 24, for retaining the handle in its retracted position, being releasable by operation of a barrel lock 5 fitted in the handle, means also being provided for preventing the handle from being turned during an extent of its outward movement from the retracted position after the handle has emerged from the recess. A bolt actuating member 16, 17, rotatably mounted on the casing 2, is formed with an axial groove 21. The stem 3 is non- rotatably secured to an extension piece 11 formed with a lug 13. When the lock 5 is operated to withdraw the bolt 24 from a hole 26 in the casing 2, a spring 22 urges the stem and handle to the projected position, the lug 13 following an axial slot 14 formed in the casing 2 and engaging the groove 21. A lateral extension 15 of the slot 14 now permits rotation of the handle, stem and bolt actuating member. To relock the door, the handle is turned to throw the bolts back to their locking positions and then pushed in until the latch 24 holds the handle in its retracted position. The door may be opened from its bolt-carrying side by turning the bolt actuating member 16, 17, the latter no longer being engaged by the lug 13. Another embodiment of the invention, Figs. 7-12 (not shown), is identical with the handle unit described and shown in divided Specification 1,179,412.