Plastic injection molded bow compass

Details Plastic injection molded bow compass Plastic injection molded bow compass

1977-04-11

1978-10-17

Phillips, Charles E.

Geometrical instruments

Scriber

Curved line

33154C, B43L 922

Patent

active

041200926

ABSTRACT:
A bow compass, the parts of which are formed by a plastic injection molding process. The compass is provided with a fine adjustment by threaded means and also a quick adjusting coarse adjustment. The compass minimizes screw threading operations, there being a threaded barrel nut which like the other parts is formed by plastic injection molding.

REFERENCES:
patent: 364561 (1887-06-01), Wilkinson
patent: 1260916 (1918-03-01), Kuhne
patent: 2253569 (1941-08-01), Langsner
patent: 2637113 (1953-05-01), Kroenlein
patent: 3208149 (1965-09-01), Zachs

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