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US Patent: 1,303,157
Spline Shaft Spanner Wrench
Patentee:
Carl P. Brockway (exact or similar names) - Toledo, OH

USPTO Classifications:
81/176.1, D8/27

Tool Categories:
wrenches : spanner wrenches

Assignees:
Willys-Overland Co. - Toledo, OH

Manufacturer:
Not known to have been produced

Witnesses:
none listed
Patent Dates:
Applied: Oct. 05, 1917
Granted: May 06, 1919

Patent Pictures:
Carl P. Brockway patent May 6, 1919
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Description:
The design shown in the patent would only firmly fit one shaft diameter. The advantage is it could be inexpensively made of malleable cast iron.

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