US Patent: 1,075,710


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Set Screw Or The Like
BRISTO

Patentee:

Dwight S. Goodwin (exact or similar names) - Waterbury, CT

USPTO Classifications:

411/393, 411/405, 81/436, 81/461

Tool Categories:

wrenches

Assignees:

Oscar F. Fitzsimons - Waterbury, CT

Manufacturer:

Bristol Co. - Waterbury, CT

Goodwin Hollow Set Screw Company - Waterbury, CT

Witnesses:

Patent Dates:
Applied:	Jan. 07, 1911
Granted:	Oct. 14, 1913

Patent Pictures: [ 1 | 2 | 3 ]

Dwight S. Goodwin patent October 14, 1913

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Description:

The patent covers the "dovetail" grooves in the recessed central socket of the set screw, and the corresponding splines on the wrench.

Introduced as the GOODWIN HOLLOW SETSCREW; produced as the BRISTO screw and matching wrenches. Contemporary ads note the screws could also be turned by a screwdriver with appropriate blade width.