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US Patent: 194,716
Pipe Tongs or Wrenches
Patentee:
Edward B. O'Kelly - Boston, MA

USPTO Classifications:
81/129.5, 81/179

Tool Categories:
wrenches : pipe wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
J. A. Connolly
J. B. Connolly
John Moriarty
William J. Kelly

Patent Dates:
Applied: Jul. 06, 1877
Granted: Aug. 28, 1877

Patent Pictures:
Edward B. O*Kelly patent August 28, 1877
USPTO pdf tiff
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Description:
The movable jaw has rack teeth that engage teeth on the shank. The adjustment is held by a spring. A secondary sliding toothed face in the movable jaw is held in engagement by a second spring.

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