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US Patent: 14,779
Wrench
Patentee:
Bradford Rowe - Albany, NY

USPTO Classifications:
81/176

Tool Categories:
wrenches : wrench adjustment types : screw adjust wrenches
wrenches : nut wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
W. C. Miller
Richard Varick De Witt

Patent Dates:
Granted: Apr. 29, 1856

Patent Pictures:
Bradford Rowe Pat. Apr. 29, 1856
USPTO pdf tiff
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Description:
The patented feature is a solid moveable jaw that slides in a grooved shank. The adjusting screw engages threads cut on the sides of the channel. The adjusting screw is turned by a thumb piece which operates bevel gearing.

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