https://www.datamp.org/ Recently added patents en-us https://www.datamp.org/patents/displayPatent.php?id=41547&pn=481,389 Wrench Patentee: Edward A. Cochran - Oak Park IL Granted:1892-08-23
Manufactured by Tower & Lyon - New York NY

Quick adjusting nut wrench, described as an improvement on the wrench function in combination tool patent no. 461,402. An 8 inch wood handle example is known. A 5 inch version was produced as the T&L EXPERT bicycle wrench.
This is one of 84,732 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=22673&pn=536,301 Method of Making Wrenches Patentee: John C. Speirs - Worcester MA Granted:1895-03-26
Manufactured by J. C. Speirs & Co. - Worcester MA

The patent describes a process for forming the handle and frame for an adjustable wrench. The main point of the process is the formation of a cylindrical open center which is changed to a flat oval.
This is one of 84,732 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=25468&pn=193,667 Wrenches Patentee: Andrew B. Lipsey - West Hoboken NJ Granted:1877-07-31
Manufactured by Roper Caloric Engine Mfg. Co. - New York NY

The main features are the slideway in the head, and the side screw to adjust the jaw. The jaw and screw interlock so the wrench is made of three pieces. Some known examples are marked "LIPSEY'S PATENT." Manufacturer name taken from contemporary advertising copy.
This is one of 84,732 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=27059&pn=509,252 Wrench Patentee: Amos Shepard - Plantsville CT Granted:1893-11-21
Manufactured by Peck, Stow & Wilcox Co. - Southington CT

The patent is for the manufacturing process. It describes steel casting and a broaching operation to form the rectangular opening down the length of the handle. The scale on the handle showing the size of the jaw opening is included in the patented features. The wrench corresponds to the Peck, Stow & Wilcox bicyle wrench announced in the April 10, 1893 "Iron Age."
This is one of 84,732 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=15181&pn=34,498 Nut Wrench Patentees: F. Hollen - Blairsville IN , A. H. Pierce - Blairsville IN Granted:1862-02-25

The jaws open with a scissors type action. A spring tends to close the jaws. The jaws have opposite facing "steps" so the wrench will catch the corners of square nuts and bolt heads only. A known metal handle example is marked boldly with the patent date.
This is one of 84,732 patents currently in the database at datamp.org

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