| 摘要 |
569,721. Sliding-clasp fastenings. WINTERHALTER, M. Feb. 19, 1943, Nos. 2791 and 2792. Convention dates, Feb. 5, 1942, and Sept. 10, 1942. [Class 44] A slider is made from metallic, or non-metallic, material, and formed with a pull - attaching member 2 which is secured to a base 1 by its ends 17, 18, without the use of supplementary fastening members. The upper surface of the slider may be covered by a cap which may be of coloured aluminium. The fastening elements may be coloured by anodic oxidation. A slider-locking spring 3 and a pull member 4, are placed in position before the pullattaching member 2 is attached by means of the ends 17, 18, which enter sockets in the base 1. A projection 161, originally turned upwards, is pressed down into the notch of the nose 21, to permanently secure the member 2 to the base. The prong 24, of the spring 3, engages the fastener elements until lifted when the member 4 is pulled. The parts 1, 2, may be welded together at the top, and the projection 161 dispensed with. The pull member 4 may be made of thermoplastic material 26 around a metal core 25. A number of examples of sliders, based on the above, are illustrated in the specification. In one example, the locking prong is attached to the pull member, and a cavity is formed in the member 2 so that the prong can sweep inwards when the pull member is lifted upwards. In a further example the member 2 is formed as a pin at the upper end. This is inserted into a hole in the base 1, and the pin riveted over. A further modification shows a part of the cap bent up to act as a support for the member 2, and also act as an abutment for the locking spring. |
