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US Patent: 573,070
Wrench
Patentee:
John Elmer Wood - Beverly, Essex County, MA

USPTO Classifications:
81/126, 81/127

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Joseph Wood
Frank L. Hobbs
E. J. Nottingham
S. W. Foster

Patent Dates:
Applied: Jul. 18, 1896
Granted: Dec. 15, 1896

Patent Pictures:
John E. Wood patent December 15, 1896
USPTO pdf tiff
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Description:
Compound leverage strengthens the jaw grip. The jaws could be configured as an alligator type pipe wrench, or alternate form as shown in the drawing. A spring facilitates spreading the handles to relax the jaw grip.

Corresponding Canadian patent no. CA-56,125 was issued June 4, 1897.

H. A. Seymour - patent attorney

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