Clasp for bond

Claim 1

A clasp comprising, a first element having a male portion, a second element having a female cavity, the two elements being joined to each other by engagement of the male portion in the cavity, the cavity opening on a front face of said second element, an inwardly disposed wall in said cavity and a recess provided on said wall, the male portion having a protrusion of configuration corresponding generally to that of said recess, said protrusion being disposed in said recess, the height of the male portion being lower than the height of the cavity, a slidable locking member positioned in the cavity, the locking member having a cross-sectional configuration coresponding generally to that of said cavity, the locking member being guided by the cavity walls and engageable into a working position between the male portion and a wall of the cavity positioned opposite the wall having said recess, a blade spring interposed between the bottom of the cavity and a rear face of the locking member to resiliently urge the locking member into its working position, the cavity including opposed lateral walls, each said lateral wall having a respective elongated aperture provided thereon, an operating stem passing through the locking member and extending outside the cavity on either side thereof through the apertures, said locking member being operable from outside the cavity to a release position by movement of the operating stem to move the locking member against the action of the return spring, whereby the locking member in its working position locks the protrusion in the recess to effect locking of the two elements assembled together.