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US Patent: 739,316
Pipe Wrench
Patentee:
David H. Irland - Chicago, IL

USPTO Classifications:
81/99

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

Assignees:
None

Manufacturer:
Irland Pipe Wrench Co. - Boston, MA

Witnesses:
E. F. Wilson
A. L. Hough
James Rott
Robert W. Stewart

Patent Dates:
Applied: Feb. 20, 1903
Granted: Sep. 22, 1903

Patent Pictures:
David H. Irland Pat. Sept. 22, 1903
USPTO pdf tiff
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Description:
The auxiliary handle, internal linkage and compression spring make this a quick-adjusting pipe wrench which can be operated one-handed. This is the second of three patents related to the Irland Pipe wrench. The others are 732,858 and 800,850.

This patent and 732,858 are conflated in British patent GB-190306270 registered March 18, 1903.

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