Abstract: A coupling device for engaging members having rings, hooks, bars and the like is disclosed. The coupling device is constructed in a manner which reduces the number of moving parts needed to engage and disengage members having rings, hooks or bars over the prior art, thereby simplifying the manufacturing process. In particular, means are provided for disengaging the rings, hooks or bars from the coupling device which means comprises only a spring, two retractable jaws and a plunger having an end of predetermined extent which the ring, hook or bar on the member may bear against, thereby compressing the spring and retracting the jaws.

Abstract: A musical instrument support, having an improved slide for adjusting the length of the support and an improved clasp for engaging a musical instrument to be supported is disclosed. The slide is approximately circular in shape and is constructed in a manner to reduce the wearing of a cord which passes through the slide. This is accomplished by utilizing a sleeve which has a lower coefficient of friction than the material from which the slide is made. The cord forms two annular loops around the sleeve. The friction between the annular loops and the sleeve is sufficient to maintain the support at a given length. The clasp is constructed in a manner which reduces the number of moving parts needed to engage and disengage the musical instrument over the prior art thereby simplifying the manufacturing process.