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US Patent: 826,728
Pipe-Wrench
Patentee:
James G. Lind - Providence, RI

USPTO Classifications:
81/100, 81/394

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

Assignees:
None

Manufacturer:
James G. Lind - Providence, RI

Witnesses:
Charles T. Hannigan
Annie E. Perce
Warren R. Perce

Patent Dates:
Applied: Nov. 29, 1905
Granted: Jul. 24, 1906

Patent Pictures: [ 1 | 2 ]
James G. Lind patent July 24, 1906
USPTO pdf tiff
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Description:
The adjustable pivot pin has a slot corresponding to a small retaining pin. A leaf spring works to hold the jaws in contact with the pipe.

The specifications note this is an improvement on Lind's September 8, 1891 patent (no. 459,377).

Known example marked LIND UNIVERSAL WRENCH PROVIDENCE R.I.

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