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US Patent: 1,371,679
Wrench
Speed Wrench
Patentee:
John L. Happy - Chicago, IL

USPTO Classifications:
81/126

Tool Categories:
wrenches : wrench adjustment types : self-adjust wrenches

Assignees:
None

Manufacturer:
Automatic Wrench Company - St. Louis, MO

Witnesses:
Fred M. Davis
Martin H. Olsen

Patent Dates:
Applied: Sep. 13, 1919
Granted: Mar. 15, 1921

Patent Pictures: [ 1 | 2 ]
John L. Happy Pat. March 15, 1921
USPTO pdf tiff
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Description:
The self-adjusting feature works by pushing the handle into the head to spread the jaws, and swinging movement of the handle closes one or the other of the jaws. The pieces inside the head which effect this motion are detailed on the second sheet of the drawings.

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