https://www.datamp.org/ Recently added patents en-us https://www.datamp.org/patents/displayPatent.php?id=85919&pn=771,169 Wrench Patentee: George McKercher - Jackson MI Granted:1904-09-27
Assigned to McKercher Wrench & Tool Co. - Jackson MI.

Improvement to previous McKercher designs, with the adjustment positioning mechanism being a spring-tensioned slide. Known McKercher wrenches did not incorporate this feature. Relevant McKercher patents include: 643,504, 729,504 and this patent.
This is one of 85,209 patents currently in the database at datamp.org

]]> 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 85,209 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 85,209 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 85,209 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 85,209 patents currently in the database at datamp.org

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