https://www.datamp.org/ Recently added patents en-us https://www.datamp.org/patents/displayPatent.php?id=85908&pn=1,384,887 Tool Handle Patentee: John E. Burndahl - Chicago IL Granted:1921-07-19

Tool handle with provisions for interchangeable heads. The angle of the heads to the handle is adjustable. The specifications describe wrench and screwdriver head options.
This is one of 85,198 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85907&pn=1,382,492 Wrench Patentee: Lafayette Evans - Portsmouth OH Granted:1921-06-21

Screw adjusting jaws; the "head" portion has a pivoted connection to the handle with reversible ratchet provision for the pivot.
This is one of 85,198 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=25340&pn=1,380,794 Monkey Wrench Patentee: William Gordon - Union NJ Granted:1921-06-07
Manufactured by Automatic Wrench Corp. of America - West New York NJ

The quick-adjust action uses multiple toothed "levers" that engage a rack on the sliding jaw. Each of the "levers" has a slightly different length from the common pivot point. The movable jaw is pulled into engagement by the interior tension spring, and the tooth on the lever closest to the final position engages the rack tooth to hold the adjustment. A "monkey wrench" version of GORDON AUTOMATIC outwardly resembling this patent and an adjustable open end wrench version (see patent no. 1,501,903) were advertised in a full-page ad in Sept. 27, 1923 AMERICAN MACHINIST. A February 1923 write-up in MACHINERY also include a pipe wrench version (see pat. no. 1,618,820) not included in the September 1923 piece.
This is one of 85,198 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85906&pn=1,371,642 Inside pipe-wrench Patentee: Allen Olson - San Pedro CA Granted:1921-03-15

An "arcuate" exterior jaw, and movable cylindrical inner jaw, designed to grip the pipe.
This is one of 85,198 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85905&pn=1,370,820 Adjustable socket-wrench Patentee: James Oscoe Johnson - Kokomo IN Granted:1921-03-08

Jaw size is adjustable; wrench is turned by sliding "T" handle in the shank portion, and the length of the shank is adjustable.
This is one of 85,198 patents currently in the database at datamp.org

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