Adjustable sighting device for archery bow

Claim 1

An archery bow sight adapted to be mounted on the side of a bow, comprising: a. an elongated channel housing having a U-shaped cross section defined by a bottom wall and side walls; b. mounting means for attaching the housing to the bow; c. an elongated lead screw disposed longitudinally within the housing having a shaft extending therefrom; d. a knob affixed to said shaft; e. bearings mounted on the respective end portions of said housing for rotatably supporting said lead screw; f. a carrier block having an opening therethrough for slideably mounting said carrier block on said screw, and being dimensional to cooperate with said channel housing to prevent rotation of sAid carrier block with respect to said lead screw; g. a support bar mounted on said block transversely disposed with respect to said housing, said bar carrying a sighting bead at each end; h. an L-shaped locking lever mounted on said block and pivotally supported thereon; i. said lever having at one end a threaded face portion engaging said lead screw and, at the other end, a shank in contact with a biasing spring, tending to maintain said face portion in engagement with said screw, whereby, upon manually depressing said shank, said face portion becomes disengaged from said lead screw, allowing the free movement of said carrier block over said screw for coarse adjustment of the height of said bar and, upon releasing the pressure from said shank, engagement thereof is effected, permitting fine adjustment of the height of said bar by the turning of said knob.