Geometrical instruments – Straight-line light ray type – Structurally installed
Patent
1993-06-08
1995-01-31
Wirthlin, Alvin
Geometrical instruments
Straight-line light ray type
Structurally installed
124 87, F41G 1467
Patent
active
053849663
ABSTRACT:
A bow sight includes an elevation block which may be operably coupled to and uncoupled from an adjusting screw by a locking member which need not be held manually in either its locking position or its unlocking position. The elevation block is supported rigidly on the frame of the sight by a three-point suspension and carries a windage block which also is rigidly supported by a three-point suspension. The outer end of the windage block is formed with a half-dovetail connector which coacts with a complementary half-dovetail connector on a sighting device to enable the sighting device to be clamped rigidly to the windage block by a single screw.
REFERENCES:
patent: 3574944 (1971-04-01), Reynolds
patent: 3822479 (1974-07-01), Kowalski
patent: 4020560 (1977-05-01), Heck
patent: 4543728 (1985-10-01), Kowalski
patent: 4584777 (1986-04-01), Saunders
patent: 5174269 (1992-12-01), Sappington
One Page Bruchure published in 1988 by Chek-It Products, Inc. of Onalaska, Wis. and entitled SG-1000 Tournament Sight.
Advertisement published by Chek-It Products, Inc. (publication date unknown) and entitled S-9000 Tournament Sight.
C. S. Gibbs Corp.
Wirthlin Alvin
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