https://www.datamp.org/ Recently added patents en-us https://www.datamp.org/patents/displayPatent.php?id=52371&pn=1,419,391 Wrench Patentee: Nils G. Larson - Attleboro, Bristol County MA Granted:1922-06-13
Manufactured by Larson Tool & Stamping - Attleboro MA

The ratchet pawl is in the rotating head. Larson Tool & Stamping included this ratchet in socket sets produced in the early 1920s, and advertised two sizes. Known examples are marked in part "Pat. Pend."
This is one of 85,208 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85918&pn=91,868 Wrench Patentee: Allen DeVilbiss Jr. - Toledo OH U.S.A. Granted:1905-02-28
Manufactured by DeVilbiss Plier Co. - Toledo OH

Parallel jaw pliers - corresponding to U.S. patent 753,374. DeVilbiss produced these at Toledo, OH.
This is one of 85,208 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85917&pn=91,245 Wrench Patentee: Robert Ashworth - St. Cloud MN U.S.A. Granted:1905-01-31

Pipe wrench corresponding to U.S. patent 771,451. A known example is marked "SPENCER PAT. OCT 4, 1904." reflecting the U.S. patent date.
This is one of 85,208 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85916&pn=771,451 WRENCH Patentee: Robert Ashworth - St. Cloud MN Granted:1904-10-04

Pipe wrench with hook jaw at right angle to the shank, rocking jaw portion on the shank, and positioning spring. There are two positions for the pivot of the the rocking jaw, and the patent includes features of that structure. A known example includes the patent date in the markings. Corresponding Canadian patent CA-91,245 was granted January 31,1905.
This is one of 85,208 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85915&pn=1,362,687 Wrench Patentee: John H. Fones - Oakland CA Granted:1920-12-21

Combination quick and screw adjust; the screw on which the adjusting knurl turns sets in oval slots; its position is held by springs. Notches in the adjusting worm have to align with stop pins to allow the worm to disengage from the rack teeth on the shank.
This is one of 85,208 patents currently in the database at datamp.org

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