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US Patent: 253,500
Wrench
Patentees:
William Harman Bielefeld - Moulton, OH
David Clark Hinkle - Moulton, OH

USPTO Classifications:
81/165

Tool Categories:
wrenches : brace wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
T. B. Noyes
J. Reed Sittell
Jacob Hauss
W. F. Deertake

Patent Dates:
Applied: Dec. 29, 1881
Granted: Feb. 14, 1882

Patent Pictures:
W. H. Bielefeld and D.C. Hinkle patent February 14, 1882
USPTO pdf tiff
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Description:
This adjustable brace wrench has a coil spring around the adjusting screw. The spring spreads the jaws.

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