US Patent: 426,223 - Pipe Wrench


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US Patent: 426,223

Pipe Wrench

Patentee:

Friedrich Virgien (exact or similar names) - Yonkers, NY

USPTO Classifications:

81/106, 81/146, 81/97, 81/DIG.6

Tool Categories:

wrenches : pipe wrenches

wrenches : wrench adjustment types : quick adjust wrenches

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Henry Huber

Carl Karp

Paul Goepel

Patent Dates:
Applied:	Apr. 19, 1889
Granted:	Apr. 22, 1890

Patent Pictures:

Friedrich Virgien patent April 22. 1890

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Description:

Quick adjustment movable jaw. A spring between the back of the movable jaw frame and main shank holds a gripping pawl in the front portion of the movable jaw in engagement with rack teeth on the main shank. The drawings show alternate forms for the fixed and movable jaws, and details of the spring and related portions of the movable jaw frame. The smaller form was intended to correspond to a "pocket wrench" form.