Swivel support fixture for lamp

Claim 1

A swivel and tilt mechanism for support of a lamp, comprising: a fixed conduit member through which electric wires for said lamp may be conducted, said conduit member having a collar member near one end thereof; a generally L-shaped unitary member having one leg with an aperture rotatably surrounding said conduit member for rotation about the axis of said conduit member, said L-shaped member being frictionally engaged on one side of said one leg by a lock member which also frictionally engages said conduit member and on the other side of said one leg by said collar member, said lock member comprising a generally cup-shaped portion with a central aperture and a plurality of radial slits extending part way outwardly from said central aperture to provide thereby a plurality of resilient, inwardly directed fingers whose inner ends frictionally engage the outer circumference of said conduit member to force said L-shaped member and said collar into frictional engagement whereby said L-shaped member may be adjustably positioned relative to said conduit member; a support member having an aperture alignable with an aperture formed in a second leg of said L-shaped member; a pivot pin extending through said aligned apertures allowing rotation of said support member about a second axis perpendicular to said axis of said conduit member, and a further lock member which frictionally engages said support member and said pivot pin, said further lock member comprising a further generally cup-shaped portion with a central aperture and a plurality of radial slots extending part way outwardly from said central aperture to provide thereby a further plurality of resilient, inwardly directed fingers whose inner ends frictionally engage the outer circumference of said pivot pin to force said support member and said second leg into frictional engagement whereby said support member may be adjustably positioned relative to said second leg; a hood member detachably connected to said support member; and stop means for limiting the extent of rotation of said L-shaped member relative to said conduit member.