US Patent: 800,850 - Pipe Wrench


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US Patent: 800,850

Pipe Wrench

Patentees:

David H. Irland (exact or similar names) - Chicago, IL

Frances A Irland (exact or similar names) - Chicago, IL

USPTO Classifications:

81/99

Tool Categories:

wrenches : pipe wrenches

wrenches : wrench adjustment types : quick adjust wrenches

Assignees:

Irland Pipe Wrench Co. - Boston, MA

Manufacturer:

Irland Pipe Wrench Co. - Boston, MA

Witnesses:

Patent Dates:
Applied:	May 23, 1905
Granted:	Oct. 03, 1905

Patent Pictures: [ 1 | 2 ]

David H. Irland patent Oct. 3, 1905

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Description:

The compression spring in the handle works to close the jaw; the swinging handle opens the jaw by an internal linkage. This facilitated one-handed operation. This improvement on Irland's July 7, 1903 and Sept. 22, 1903 patents (nos. 732,858 & 739,316) is reflected in the 1906 "new product announcements" found in trade journals.

Further / alternate improvements appear in patent nos. 868,126 and 868,127.