GB658354A - Improvements relating to fastening devices - Google Patents

Abstract

658,354. Fastenings; anchor nuts. TINNERMAN PRODUCTS, Inc. April 25, 1949, No. 10915. Convention date, July 19, 1948. [Classes 44 and 89(i)] A fastener for securing an article to an apertured support comprises a sheet metal body providing a base, a pair of attaching hooks projecting from the underside of the base and extending in opposite directions and movable by rotation of the base into engagement with opposite sides of an aperture in the support and a, projection on the underside of the base adapted to abut a wall of the aperture to lock the fastener in the secured position. In the form of Figs. 1, and 3 the fastener 10 carries the hooks near one end so that it may be rotated to the secured position by using the other end as a lever. The hooks 15 are of triangular form off-set one from the other and bent up about parallel lines 16. To facilitate their engagement the hooks are lipped at 17. The hooks are passed through the aperture 1, the pointed ends 17 fitting opposite corners. Rotation of the base engages the hooks with the support adjacent the aperture as shown in Fig. 3, the insides of the hooks abutting opposite aperture walls. A resilient arm 18 struck down from the base snaps down behind the wall of the aperture to secure the fastener in the locked position. The base is located lengthwise in the aperture by the abutment of the arm 18 at one end 'and the opposite hook at the other. The fastener has side flanges 12 provided with shoulders 13 under which the inturned flanges of a moulding strip are adapted to engage. In another form the side flanges are curved in section and adapted to engage the flanges of a moulding strip lying parallel to the fastener length. Alternatively the base may be extended to form a clipping arm suitably shaped, e.g. to secure a wire or pipe. In the form of Fig. 9 the fastener is adapted to secure a nut N on the support P. The nut is retained between side flanges 40 by a clipping arm 45 bent up and over and formed with a lip 47 and a shoulder 46 at the end. Tongues 48 struck out from the arm are shaped to lock a screw 49 engaged with the nut. In another form the nut is held in alignment with the aperture in which the hooks are engaged, being retained between side flanges of the base by lipped hooks formed at their upper ends. In the form of Fig. 14 the base 61 has two screw engaging pairs of tongues 64 struck: up therefrom and is retained on the support by hooks 15 as before.