https://www.datamp.org/ Recently added patents en-us https://www.datamp.org/patents/displayPatent.php?id=42314&pn=1,896,437 Pipe Wrench Patentee: Andrew B. Allen - Lockland OH Granted:1933-02-07
Manufactured by Steel City Electric Co. - Pittsburgh PA

The patent claims the facing jaw surfaces of differing curvatures, and edges of the outer curved jaw in planes aligning with the bearing surface of the inner jaw. An ALLEN RED HEAD WRENCH has the hammer poll and grooved inner jaw. The patent also appears to correspond to the STEEL CITY ELECTRIC CO. PATENT PENDING "RED HEAD" curved jaw alligator wrench brought to market in 1932 / 1933. This design outwardly resembles the INVOLUTE WRENCH based on patent no. 661,011
This is one of 85,311 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=86022&pn=1,896,699 Chain pipe wrench Patentee: Frank L. Cook - South Bend IN Granted:1933-02-07

A known example has a different "latch:" -- teeth on the chain engage with teeth on the body, and are held by a sliding collar.
This is one of 85,311 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=30616&pn=1,071,666 Wrench Patentees: Charles Hansen - Mingo IA , Conrad Heberer - Mingo IA Granted:1913-08-26
Manufactured by C. & E. Mfg. Co. - Marshalltown IA

Interchangeable heads can adjust at an angle to the shank. and shift position in ratchet fashion due to teeth on their "back" edge, and the conformation of the spring that holds the head in place. PATENT GAZETTE entry provided class 81/59. Produced with four sizes of interchangeable open end heads and a fixed size alligator wrench on the end of the handle as the MARSHALLTOWN by the C & E Mfg. Co. of Marshalltown, Iowa.
This is one of 85,311 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=86021&pn=1,069,858 WRENCH Patentee: Charles Cotton - Burkett NE Granted:1913-08-12

Ratchet wrench with an adjustable work holding jaw component.
This is one of 85,311 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=86020&pn=833,758 Wire Straightening and Cutting Machine Patentee: Franklin B. Shuster - New Haven, New Haven County CT Granted:1906-10-23
Manufactured by F. B. Shuster Co. - New Haven, New Haven County CT

Abstract: Heretofore in wire straightening and cutting-off machines double standards carrying the boxes (four in number) of the feed-roll shafts were used, and as often as the size of the wire run through the machine was changed it was of course necessary to change the vertical position of the feed-rolls. To insure the engagement of the feed-roll-shaft gears for the different vertical positions it was necessary to make the teeth of these gears long enough to meet these varying positions. This construction had a tendency to weaken the gears and cause frequent breakage. Then, again, the four independent boxes were difficult to adjust and keep in alinement with the wire-feeding line. With my improved construction only one standard is required in which, as before mentioned, the forward ends only of the boxes are mounted and adjusted, while their opposite ends are permanently located in one position, thus leaving their forward ends free to be adjusted to the feeding-line of the wire, while the vertical position of the ordinary tooth-gears 15 and 16 are not perceptibly changed. This not only makes a handier construction, but it is decidedly cheaper. Claim: The combination, in a wire straightening and cutting-off machine, comprising shafts carrying gears and wire-feeding rolls, boxes in which said shafts are journaled, said boxes located between said gears and feeding-rolls, both of said boxes pivotally supported at or near one end to a stationary part of the machine, the opposite end of said boxes adjustably supported.
This is one of 85,311 patents currently in the database at datamp.org

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