Bowstring draw and release device

Details Bowstring draw and release device Bowstring draw and release device

1988-05-09

1989-10-31

Reese, Randolph A.

Mechanical guns and projectors

Element

Trigger or releasing mechanism

F41C 1902

Patent

active

048770094

ABSTRACT:
Disclosed is a device for drawing an archery bowstring and for automatically releasing it when the draw weight of the bowstring exceeds a predetermined valve. This is a main body having a front end that anchors the terminal ends of a forwardly extending flexible cord loop, and having a rear end adapted to have attached an archer's hand loop. A lever mechanism is pivotally mounted to the body and has an initial position in which a lever edge portion is angled so as to releasably retain the bight of the loop after the loop has been engaged around the bowstring. A spring-biased member, with a screw to adjust spring force, is also mounted in the body, and provides a depressible projection which will engage one side of a cam-like protuberance carried by the lever mechanism to hold it in its initial position. When the bowstring is drawn with force exceeding a predetermined value, sufficient torque is generated in the lever mechanism to depress the spring-biased member whereby it immediately rotates to release the cord loop and bowstring.

REFERENCES:
patent: 3749076 (1973-07-01), Suski et al.
patent: 3818888 (1974-06-01), Keeney et al.
patent: 4105011 (1978-08-01), Chism
patent: 4282851 (1981-08-01), Lyons
patent: 4308851 (1982-01-01), Kaine, Jr. et al.
patent: 4476845 (1984-10-01), Rickard
patent: 4665886 (1987-05-01), Barlow

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