Datamp.org Patents http://www.datamp.org/ Recently added patents en-us US Patent: D35,421 http://www.datamp.org/patents/displayPatent.php?id=13827&pn=D35,421 Wrench Stock Patentee: Albert Dudly - Menominee MI Granted:1901-12-10
Manufactured by Dudly Tool Co. - Menominee MI

This is the shank and head portion of the Dudly combination nut and pipe wrench. A companion design patent issued Aug. 6, 1901 (D34,901) describes the adjustable jaw.
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US Patent: D34,901 http://www.datamp.org/patents/displayPatent.php?id=13826&pn=D34,901 Slide Piece for Wrenches Patentee: Albert Dudly - Menominee MI Granted:1901-08-06
Manufactured by Dudly Tool Co. - Menominee MI

This jaw segment corresponds to the adjustable jaw member of the Dudly combination nut and pipe wrench. The double-headed main shank of the wrench is covered by a second design patent issued Dec. 10, 1901. D35,421
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US Patent: 1,760,544 http://www.datamp.org/patents/displayPatent.php?id=21679&pn=1,760,544 Wrench Patentee: Frank H. Dickson - Auburn NY Granted:1930-05-27
Manufactured by D. Maydole Tool Corp. - Norwich NY

"Tweak" on the Stillson type pipe wrench includes the location and shape of the springs between the handle and frame for the adjusting nut. The pivot point between the handle and frame is a pair of lugs on the handle, and corresponding grooves in the frame so that the parts can be assembled without the use of a rivet or pivot pin.
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US Patent: 2,724,301 http://www.datamp.org/patents/displayPatent.php?id=42038&pn=2,724,301 Locking Means for the Movable Jaw of a Slidable Side Jaw Wrench Patentees: Maurice George Parent - Central Falls RI , Louise Philip Voisin - Central Falls RI Granted:1955-11-22
Assigned to Maurice George Parent - Central Falls RI

The patent is based on the concept of teeth on the movable jaw engaging teeth on the adjusting means. In the adjustable open end, the teeth are on a spring-loaded slide; in the pipe wrench the teeth are on a spring-loaded pivoting block. A 1922 French patent and U.S. patents 1,336,460, 1,397,214, 1,440,381, 1,445,551, 1,523,093, 1,557,690, and 1,792,338 are listed as references. William Frederick Werner - patent attorney
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US Patent: 2,107,568 http://www.datamp.org/patents/displayPatent.php?id=41559&pn=2,107,568 Ratchet Wrench Patentee: Foster A. Haist - Buffalo NY Granted:1938-02-08

The pawl structure is contained within a "socket" in the body of the wrench. The patent number appears in a list of patents in "Alloy Artifacts," with no known manufacturer. Popp & Popp - patent attorneys
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