Geometrical instruments – Straight-line light ray type – Structurally installed
Patent
1985-10-11
1987-01-13
Pinkham, Richard C.
Geometrical instruments
Straight-line light ray type
Structurally installed
124 87, F41G 100, F41B 500
Patent
active
046353747
ABSTRACT:
A sight bar for an archer's bow comprising a flat Y-shaped plate adapted to be attached to a bow at the stem of the Y and the two arms of the Y connected by a hinge pin on which pivots an L-shaped beam member so that each wall section of the beam may be positioned flush with the Y-shaped plate; structure to adjustably attach a stationary bow sight to one wall section and a pendulum bow sight to the other wall section; and structure to manually clamp the L-shaped beam so that each wall section may be made selectively flush with the Y-shaped plate.
REFERENCES:
patent: 3310875 (1967-03-01), Kowalski
patent: 4120096 (1978-10-01), Keller
Jackson Gary
Pinkham Richard C.
Yeager Arthur G.
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