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US Patent: 700,087
Pipe Wrench
Henry F. Renner - Erie, PA

USPTO Classifications:

Tool Categories:
wrenches : pipe wrenches
wrenches : wrench adjustment types : screw adjust wrenches

Hollands Mfg. Co. - Erie, PA

Hollands Mfg. Co. - Erie, PA

Ralph A. Sturgeon
H. J. Curtze
F. J. Bassett

Patent Dates:
Applied: Dec. 30, 1901
Granted: May 13, 1902

Patent Pictures: [ 1 | 2 ]
Henry F. Renner patent May 13, 1902
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A large adjusting sleeve with internal teeth engages teeth on the shank of the movable jaw. The wrench is comprised of only three pieces. The bearing surface between the movable jaw and handle is slightly convex and the adjusting sleeve fits loose enough to allow the movable jaw to rock slightly in relation to the handle. Hollands Mfg. Co. of Erie, PA marketed this as the Keystone Pipe Wrench.

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