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US Patent: 172,239
Wrench
Patentee:
Elisha T. Barlow - San Francisco, CA

USPTO Classifications:
81/129, 81/185

Tool Categories:
wrenches : wrench adjustment types : wedge adjust wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
C. W. Forbes
A. Sterling
P. O. Wegener
Geo. A. Worz

Patent Dates:
Applied: Jan. 08, 1876
Granted: Jan. 11, 1876

Patent Pictures:
Elisha T. Barlow Pat. January 11, 1876
USPTO pdf tiff
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Description:
The wrench adjusts by advancing or retracting sliding plates. They are wedged in position by a sliding wedge that is moved by a side lever. The side-lever cap has interior grooves to hold extensions on the side of the sliding plates.

This is the 1st of 3 wrench patents granted to Barlow on this date.

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