Datamp.org Patents https://www.datamp.org/ Recently added patents en-us US Patent: 1,378,035 https://www.datamp.org/patents/displayPatent.php?id=85959&pn=1,378,035 Wrench Patentee: George C. Kotrba - Chicago IL Granted:1921-05-11
Assigned to Thomas E. Weaver - Chicago IL

Combination quick and screw adjust nut wrench; a wrench collector has constructed an interpretation of this patent. An item in Sept. 1922 POPULAR MECHANICS does not make it clear if Kotrba was producing the wrench or had merely constructed a prototype.
This is one of 85,249 patents currently in the database at datamp.org

]]> US Patent: 1,199,606 https://www.datamp.org/patents/displayPatent.php?id=31149&pn=1,199,606 Wrench Patentee: Frank Prokop - Milwaukee WI Granted:1916-09-26

The adjusting wheel meshes with a rack on the shank of the movable jaw. The frame also carries a sliding adjustment lock. A known example is a 4 inch pocket wrench stamped PAT 1916. A collector has fashioned a "larger" sized interpretation of the patent.
This is one of 85,249 patents currently in the database at datamp.org

]]> US Patent: D58,454 https://www.datamp.org/patents/displayPatent.php?id=85958&pn=D58,454 Design for a Wrench Patentee: Victor A. Anderson - Elmwood Park IL Granted:1921-07-26

Design for what appears to be an adjustable pipe wrench.
This is one of 85,249 patents currently in the database at datamp.org

]]> US Patent: 1,384,655 https://www.datamp.org/patents/displayPatent.php?id=85957&pn=1,384,655 Wrench Patentee: Joseph G. Allmon - West Medford MA Granted:1921-07-12

"Box end" with one side partially "closed" to prevent slipping off the work piece. The wording of the specifications hint this was designed to fit a specific work situation.
This is one of 85,249 patents currently in the database at datamp.org

]]> US Patent: 2,666,350 https://www.datamp.org/patents/displayPatent.php?id=85956&pn=2,666,350 Screw-adjusting tool Patentee: Walter W. Hackett - Oakland CA Granted:1954-01-19
Manufactured by Hackett Tools - Oakland CA

Valve tappet adjusting tool; it includes a scale for tracking the degree of rotational adjustment. [Compare the ValTul / Snap-On tappet adjuster based on patent no. 1,544,520.] Produced as the "FEELZIT" valve adjusting tool. Prior patents 1,575,560, 1,681,881 and 2,194,069 cited as references.
This is one of 85,249 patents currently in the database at datamp.org

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