https://www.datamp.org/ Recently added patents en-us https://www.datamp.org/patents/displayPatent.php?id=21398&pn=114,348 Improvement in Pipe-Wrenches Patentee: Eugene H. Robbins - Pittsfield MA Granted:1871-05-02
Manufactured by Rice & Robbins - Pittsfield MA

Early chain pipe wrench; kept in production over several decades. Appears as ROBBINS "TYPE A" in 1920s listings. Ken Cope's "American Wrench Makers 1830-1930" identifies the history of production and distribution, citing ads from various hardware trade periodicals. This patent is referenced in M. T. Chapman's March 7, 1882 patent (no. 254,460). An improvement patented on July 31, 1882 (pat. no. 282,372) is not known to have been used.
This is one of 84,767 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85475&pn=1,742,140 Can opener Patentees: Edward L. Girard - Washingtonville OH , Fred F. Girard - Washingtonville OH Granted:1929-12-31
Manufactured by Girard-McIntosh Mfg. Co. - Washingtonville OH

The patented features include the wall bracket, and the structure of the cutter and the "flanged toothed wheel" portion of the cranked mechanism. The OPN-EZY can opener was announced to the hardware trade in fall 1929.
This is one of 84,767 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85472&pn=1,337,899 Jar Wrench and Holder Patentee: Fred F. Girard - Washingtonville OH Granted:1920-04-20
Manufactured by Girard-McIntosh Mfg. Co. - Washingtonville OH

A connecting link attaches the jar holder and jar wrench. The Girard-McIntosh Mfg. Co. advertised "income producing agency" for this and other kitchen utensils and household gadgets. A known example marked with manufacturer identification and the patent date includes features included in Girard's subsequent patent 2,057,614.
This is one of 84,767 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85474&pn=2,057,614 Combination jar holder and top remover Patentee: Fred F. Girard - Washingtonville OH Granted:1936-10-13
Manufactured by Girard-McIntosh Mfg. Co. - Washingtonville OH

Improvements to Girard's jar holder / jar wrench tool (Pat. no. 1,337,899). The improvements include a hinge in the "frame" connecting the jar holder and jar wrench, and "resilient grips" on the jar holder. These features appear on a known example marked with the earlier patent date.
This is one of 84,767 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=83270&pn=AI7 Canal Lock Gate Patentee: David Wilkinson - Cohoes, Albany County NY Granted:1838-04-24

In the United States, the term "Additional Improvement Patents" refers to a specific, historical category of patents used between 1837 and 1861. Under the Patent Act of 1836, an inventor could add improvements to their already existing patent rather than filing an entirely new application. AI (Additional Improvements) patents were issued between 1836 and 1861 and only 318 were ever issued. Only the patent drawing is available.
This is one of 84,767 patents currently in the database at datamp.org

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