GB190518398A - Improvements in or relating to Safety-pins. - Google Patents

Abstract

18,398. Zumwinkel, J. Sept. 12. Safety-pins.-A safety-pin or brooch fastening consists of two pins 1, 2, pressed point to point by helical springs 3, 4. The pins are formed in one piece with the springs, which are attached to a central washer 5. Two bars 7, 8, loosely engaging one another by claws 9, slide within the springs, to give lateral rigidity. The outer ends of these bars are formed into buttons 10 which serve as handles for pulling out the pins. The washer 5 may be dispensed with, the pins 1, 2 being formed in one piece with a single helical spring. In modifications, (1) the springs are arranged in separate chambers of a common sleeve ; (2) the springs are arranged in a common sleeve on which are guided two outer sleeves ; (3) the pin guide-shanks 24, 25, Fig. 9, overlap and are connected to the ends of a common spring, arranged in two sleeves 27, 28, sliding one on the other, so that when the sleeves are pressed inwards the spring is extended and the pins opened ; (4) the pin guide-shanks overlap and form handles which when pressed together extend the spring and open the pins. In all modifications, the helical springs may be flat, as shown in Fig. 13.