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US 4,041,579 AGranted
Jewelry clasp and method of making same
OwnerBarry H. Chappelinventor
Life of this patent
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OwnerBarry H. Chappelinventor
Estimating the term…
A clasp or connector for detachably fastening to each other the two ends of jewelry chains, necklaces, bracelets or the like. The clasp includes an elongated planar base-plate having a loop-receiving or link-receiving hole or loop at one end thereof, to which the terminal link of the chain, necklace or bracelet may be secured, and having a short link-receiving post at the other end thereof over which the other terminal link of the chain, necklace or bracelet may be placed when the clasp is in its open condition. An elongated slider-mounting box-like portion surmounts and is formed integrally with the base-plate and has an elongated spring-chamber therein which is open at the top and whose longitudinal walls have planar upper slider-bed surfaces adjacent the spring-chamber, and has longitudinal slider-guides extending upwardly from the side-walls of the spring chamber adjacent said longitudinal slider-beds, with their inner walls inclined inwardly and interlockingly and slidably engaging similarly inclined longitudinal side-walls of the slider resting on said slider-beds. The slider has a planar bottom surface in operative alignment with the upper surface of the link-receiving post. A spring engages the slider in the direction of the link-receiving post.
A jewelry clasp including an elongated base having a box-like portion open at the top and having walls surmounting the bottom of the base and having a spring-chamber between said walls, said walls having upper slider-bed surfaces for slidably supporting the below-mentioned slider for straight-line longitudinal to-and-fro sliding motion in relation to the base, a slider resting on said slider-bed surfaces and having longitudinal side-surfaces inclined inwardly in an upward direction, two opposite longitudinal slider-guides extending upwardly from said walls and flanking said side-surfaces of said slider and inclined in relation thereto so as slidably to interengage therewith to retain the slider on said slider-bed surfaces and to guide the slider for to-and-fro straight-line longitudinal motion in relation to the base, a link-receiving post carried by said base in front of said box-like portion thereof and spaced therefrom in a longitudinal direction, the top of said post being in operative alignment with said slider-bed surfaces so that the slider can be moved longitudinally thereon to over-ride the top of the post in close proximity thereto, a spring-abutment extending downwardly from said slider into said spring-chamber, a spring operatively interposed between said spring-abutment and an end of said spring-chamber and arranged to urge the slider in the direction of said post, and a link-anchorage at the opposite end of said base.
The method of making jewelry clasps which consists of forming an elongated clasp-base having a box-like portion surmounting its bottom and open at its top and having walls and a spring-chamber between said walls and having slider-bed surfaces on top of said walls and opposed longitudinal slider-guides flanking said slider-bed surfaces on the outside thereof and extending upwardly therefrom, and a link-receiving post on said base in front of and having a height generally the same as that of said box-like portion, and forming an elongated slider with longitudinal side-surfaces inclined inwardly in an upward direction and with a spring-abutment extending downwardly from the bottom surface of the slider, mounting said slider on said slider-bed surfaces between said slider-guides and with its spring-abutment extending into said spring-chamber and generally simultaneously interposing a spring between said spring-abutment and an end of said spring-chamber to urge said slider in the direction of said post, and thereafter deforming said slider-guides inwardly towards and into operative interengagement with said inclined side-surfaces of said slider, thereby to maintain said slider and said base in assembled relation to each other with the slider slidable in relation to the base for rectilinear to-and-fro motion.
Dependencies are inferred from the claim text.