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US Patent: 362,908
Walter E. Taft - Providence, RI

USPTO Classifications:

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

Walter E. Taft and Co. - Providence, RI

Akron Tool Company - Akron, OH
Chas. A. Bowen Company - Sterling, OH

Socrates Scholfield
John S. Lynch
Joseph J. Scholfield
Chas. F. Schmelz

Patent Dates:
Applied: Jan. 17, 1887
Granted: May 10, 1887

Patent Pictures: [ 1 | 2 ]
Walter E. Taft patent May 10, 1887
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The primary adjusting screw is typical for a monkey wrench of this type. The secondary final adjustment uses an extended lever handle connected to threaded base extending into a threaded socket in the ferule.

The wrench was advertised to the hardware trade in 1888, marketed as Taft's Vise Wrench. Known examples marked with a couple of different maker names.

Corresponding Canadian patent CA-27,810 was granted Oct. 13, 1887; the wrench also received British patent GB-188711095 registered Aug. 13, 1887.

Pat. no. 402,186 claims to be an improvement on supplementary tightening levers of this type.

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