Elevation assembly for archery sight
An elevation assembly for an archery sight includes a rail adapted for connection with a bow and having a plurality of spaced teeth extending from a surface thereof. An elevation block is mounted on the rail for reciprocal sliding movement between the ends of the rail. A pinion wheel is connected with the elevation block. The wheel includes a plurality of teeth which are configured to mesh with the pinion teeth of the rail. A knob is connected with the pinion wheel. Rotation of the knob rotates the pinion wheel to displace the wheel and the elevation block along the longitudinal axis of the rail for precise elevation adjustment of the archery sight. Pressing the knob along an axis normal to the rail longitudinal axis moves the pinion wheel along the normal axis away from the rail axis to disengage the pinion wheel teeth from the rail teeth and allow the elevation block to slide freely along the rail for quick course elevation adjustment of the sight.
1. An elevation assembly for an archery sight, comprising
(a) a rail including a plurality of spaced teeth extending from a surface thereof;
(b) an elevation block mounted on said rail for reciprocal movement relative thereto; and
(c) a pinion wheel connected with said elevation block, said pinion wheel including a plurality of spaced teeth and being displaceable relative to said elevation block and said rail between an operating position wherein said pinion wheel teeth engage said rail teeth and a release position wherein said pinion wheel teeth are disengaged from said rail teeth, whereby when said pinion wheel is in the operating position, said pinion wheel is operable to displace said elevation block relative to said rail, and when said pinion wheel is in the release position, said elevation block is free to slide along said rail.
2. An elevation assembly for an archery sight as defined in claim 1 , wherein said rail has a longitudinal axis and said pinion wheel is displaceable relative to said elevation block along an axis normal to said rail axis.
3. An elevation assembly for an archery sight as defined in claim 2 , wherein said rail teeth and said pinion wheel teeth are equally spaced and have a complementary configuration.
4. An elevation assembly for an archery sight as defined in claim 3 , wherein said rail teeth and said pinion wheel teeth have an angular configuration.
5. An elevation assembly for an archery sight as defined in claim 4 , wherein a space between said rail teeth increases in a direction toward the operating position of said pinion wheel and a space between said pinion wheel teeth increases in a direction toward the release position of said pinion wheel.
6. An elevation assembly for an archery sight as defined in claim 3 , and further comprising a knob connected with said pinion wheel via a dowel arranged along said normal axis, said knob being operable to rotate said pinion wheel and to displace said pinion wheel along said normal axis.
7. An elevation assembly for an archery sight as defined in claim 6 , and further comprising a spring arranged between said elevation block and said knob, said spring biasing said knob and said pinion wheel toward said operating position, whereby when an archer displaces said knob along said normal axis toward said release position against said spring, said pinion wheel teeth are disengaged from said rack teeth and said elevation block is free to slide along said rail.
8. An elevation assembly for an archery sight as defined in claim 7 , wherein said elevation block contains a first chamber in which said pinion wheel is arranged and a second chamber in which said spring is arranged.