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US Patent: 1,334,156
Wrench
Patentees:
John H. Lagreid - Seattle, WA
Oscar Becklin - Seattle, WA

USPTO Classifications:
81/137

Tool Categories:
wrenches : wrench adjustment types : quick adjust wrenches
wrenches : pipe and nut combination wrenches

Assignees:
None

Manufacturer:
Becklin Wrench Co. - Seattle, WA

Witnesses:
Unknown

Patent Dates:
Applied: Nov. 25, 1918
Granted: Mar. 16, 1920

Patent Pictures: [ 1 | 2 ]
Lagreid and Becklin Pat. March 16, 1920
USPTO pdf tiff
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Description:
The quick-adjust mechanism is a toggle with teeth, that engages an off-center rack on the shank. The design has a provision for an adjustment lock. A pipe wrench based on this patent matches further elaborations and refinements for which Becklin received pat. no 1,656,343 on Jan. 17, 1928.

Lagreid developed an alternate design with a sliding pawl to hold adjustment; it received patent no. 1,559,328 on Oct. 27, 1925.

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