Abstract: A toggle clamp has a bolt carried by a swinging clamping arm for generally axially and limited arcuate movement in a clamping operation against a workpiece. The clamping end of the bolt is removably secured within a socket in a polyurethane work engaging bumper and seated against the socket base. By virtue of the physical characteristics of the polyurethane and interference fit between the bolt and the socket wall throughout an appreciable axial extent, the assembled bolt and bumper are capable of withstanding the axial and radial forces of repeated clamping operations and outwearing comparable assemblies available heretofore without recourse to a chemical bond between the bolt and bumper or an enlarged force distributing bolt head as has been required heretofore.

Abstract: The invention comprises an assembled electrical lamp socket construction having novel integral sealing means for the tower end derived from axial installation of a split plug wedging compressively within an outer socket shell and against insulation of wiring passing therethrough to retain electrical circuit contact assemblies in the tower. The plug is inserted with interengaging tapered surfaces in the tower end of the socket shell producing snap-in fit for the circumferential compressive engagement of the plug with the shell and a second interference compressive fit for the mating surfaces of the split plug halves. Apertures for insulated electric wires are formed in the mating surfaces with circumferential protrusions that encapsulate and compressively penetrate the wire insulation to form a seal thereabout.