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US Patent: 234,540
Combined Wrench and Screw Driver
Patentee:
John K. Collins (exact or similar names) - Lebanon, NH

USPTO Classifications:
7/138, 7/165, 81/177.6

Tool Categories:
wrenches
screwdrivers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
C. Sedgwick
A. Schehl
William B. Weeks
William L. Hutchins

Patent Dates:
Applied: Sep. 24, 1880
Granted: Nov. 16, 1880

Patent Pictures:
John K. Collins Pat. November 16, 1880
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Description:
The screwdriver folds within the shank of the wrench. The wrenches are an open end and a square socket. The intended use was maintenance of percussion cap firearms.

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