Archer's bow sight

DETAILED DESCRIPTION What is claimed is: 1.
An archer's bow sight comprising: a sight span having spaced apart front and rear sight elements, and means for adjustably securing said sight span to the riser of a bow including; a slide block, a windage slide bar, means pivotally mounting said slide bar on said slide block for limited pivotal adjustment of the slide bar about a vertical axis generally parallel to the direction of adjustment of the slide block, said windage slide bar projecting laterally from slide block so as to extend generally laterally of said bow, means slidably mounting said sight span on said slide bar for selective positioning of said sight span along said slide bar to correct for cross-wind effects on the flight path of an arrow shot from said bow, means for pivotally adjusting and selectively fixing said slide bar, about said means pivotally mounting said slide bar, relative to said slide block for aligning the front and rear sight elements of said sight span with the bow string, a radius bar, means for adjustably securing said radius bar to said bow, said radius bar being oriented generally vertically, parallel to said bow, and having a longitudinally curved portion thereof with a constant radius of curvature, and means for slidably mounting said slide block on said radius bar for vertical adjustment generally parallel to the longitudinal axis of the bow to enable a vertical adjustment of the sight span for accommodating variations in the distance from the bow to a target, said slide block being selectively secured to said radius bar at a desired position along the curved portion thereof.
2.
The archer's bow sight of claim 1 wherein the means for adjustably securing said radius bar to said bow includes a base bar spaced apart from and oriented generally parallel to said radius bar, an extension from one end of said base bar, said extension extending generally parallel to the longitudinal axis of said sight span, said radius bar, at one end thereof, being pivotally attached to the extension with the pivotal axis of the attachment being generally parallel to the lateral axis of said bow sight span, a rod extending from the other end of said base bar generally parallel to said extension, and the other end of said radius bar being adjustably secured at a desired position on said rod