https://www.datamp.org/ Recently added patents en-us https://www.datamp.org/patents/displayPatent.php?id=49273&pn=600,813 Adjustable Spanner or Wrench Patentee: Jozua Cornelis Hendrikus Van Duijl - Kralingsche-Veer Netherlands Granted:1898-03-15

The main feature of the patent and distinctive feature of the wrench is the body extension which supports the movable jaw in its extended position. Markings on extant examples suggest the wrench was produced in the Netherlands and other European countries. A European collector says it was made by a German manufacturer. It may also have had limited production or distribution in the United States. The inventor's name sometimes appears as "van Duyl" or "Duyl." Corresponding British patent GB-189629300 was registered Dec. 21, 1896. A subsequent Van Duijl design (GB-190718926 in Britain) is described as an evolution from this design. One extant example marked "D.R.G.M." includes a swinging toothed hook jaw and gripping teeth cut on the "outer" surface of the adjustable jaw, forming a combination pipe and nut wrench.
This is one of 84,732 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=13689&pn=6,002 Screw Wrench For Grasping Cylindrical Forms Patentees: Solyman Merrick - Springfield MA , Frederick H. Bartholomew - New York City NY Granted:1849-01-02
Manufactured by Bemis & Call - Springfield MA

The wrench has a "hook" shaped fixed jaw, and a toothed "lever" portion on the adjustable jaw. Merrick describes this as an improvement on his Aug. 15, 1848 patent 5,707. The hook jaw portion of this pipe wrench design was used by Bemis & Call for pipe wrenches until just before WWII. Wrenches citing this patent and matching this design are shown in period B&C advertising; few of the wrenches have survived. This patent noted in patent nos. 15,184 & 18,135.
This is one of 84,732 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=82710&pn=257,274 Verstellbarer Schraubenschlüssel , u.s.w. Patentee: Wilhelm Dörner - Radeformwald-Feldmannshaus Germany Granted:1905-08-16

Google translate: "Adjustable wrench, the shaft of which is made from a flat iron rod and is formed into a curved handle and then into a screw spindle." Known example marked "C.B. BEST D.R.G.M. 257274" is attributed to Crampton Brothers (Sheffield); a 1918 catalog attached to a Hungarian Bee-Keeping journal lists the wrench. A 1924 ad for a different Wilhelm Dörner wrench suggests Dörner made this one as well. German Gebrauchsmuster Registrations are not included in online patent sources. They are documented only from the German patent office's PATENTBLATT (where they are listed in order by Patent classification rather than by registration number) and from lists and notices in trade publications and the like.
This is one of 84,732 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=41547&pn=481,389 Wrench Patentee: Edward A. Cochran - Oak Park IL Granted:1892-08-23
Manufactured by Tower & Lyon - New York NY

Quick adjusting nut wrench, described as an improvement on the wrench function in combination tool patent no. 461,402. An 8 inch wood handle example is known. A 5 inch version was produced as the T&L EXPERT bicycle wrench.
This is one of 84,732 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=22673&pn=536,301 Method of Making Wrenches Patentee: John C. Speirs - Worcester MA Granted:1895-03-26
Manufactured by J. C. Speirs & Co. - Worcester MA

The patent describes a process for forming the handle and frame for an adjustable wrench. The main point of the process is the formation of a cylindrical open center which is changed to a flat oval.
This is one of 84,732 patents currently in the database at datamp.org

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