https://www.datamp.org/ Recently added patents en-us https://www.datamp.org/patents/displayPatent.php?id=59219&pn=1,120,882 Rotator for piles of plates Patentee: Gustaf M. Anderson - Waterloo IA Granted:1914-12-15
Manufactured by Associated Manufacturers Co. - Waterloo IA

Examples of this tool are reported, marked only with the patent date. It appears in a 1917 full page color ad for the IOWA CREAM SEPARATOR in IMPLEMENT and TRACTOR JOURNAL, and is noted in period ads for the separator. The curved discs shown in the drawing were a feature of that brand of cream separator, and the disc holder was designed to coordinate with the center opening of those discs. The device has been incorrectly identified as a spinner for rope making in often repeated citations to a "worthpoint" listing.
This is one of 83,754 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=84456&pn=176,383 Improved Calf-Muzzle Patentee: Smilie Tilton - Atlantic IA Granted:1876-04-18

A hinged portion allows the knobbed ends to insert in the calf's nostrils. The spurs would irritate the cow, and after a short interval, the calf would be weaned. An 1878 ad notes two sizes, but does not identify the maker.
This is one of 83,754 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=30743&pn=1,830,033 Automatic Nut Wrench Patentee: John V. Larson - Chicago IL Granted:1931-11-03
Manufactured by Chicago Manufacturing & Distributing Co. - Chicago IL

Automatic wrench patents begin with August Kinderman's Jan. 25, 1870 design patent D3,821. By the 1920s, the patents focus on very subtle features. This patent's focus is on the shape and placement of the gear teeth so that maximum holding power coincides with standard nut sizes falling within the capacity of the wrench. LARCOLOY automatic nut wrenches used this patent and nos. 1,602,620 and 2,351,821. This patent was also associated with late production of SPEEDNUT by Chicago Mfg. & Distributing Co. (see Alloy-Artifacts). It appears in advertising for Hedstrom Industries LARC-O-MATIC introduced after WWII.
This is one of 83,754 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=14768&pn=RE3,308 Improvement in Tack Hammers Patentee: Thomas A. Conklin - New Britain CT Granted:1869-02-23
Manufactured by The Stanley Works - New Britain CT

Single piece casting with a hollowed handle and coated to prevent rust. No 4 in the Stanley 1872 catalog. The Walter's book mentions that Conklin was an original founder of A Stanley & Co.
This is one of 83,754 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=15768&pn=D34,139 Design for a Firmer Chisel Patentee: James Swan - Seymour CT Granted:1901-02-26
Manufactured by James Swan Co. - Seymour CT

Design is for the cross section shape of the chisel blade, "straight sides inclining slightly toward each other from edge to base and inclining slightly inward from bottom to top, bottom being flat, the very top consisting of two planes lying at a very obtuse angle to each other and intersecting at a center line which inclines slightly toward the bottom from the base forward..." Term of patent is 14 years. James Swan also patented a chisel design several weeks later with a semi-circular cross section, D34215. Example found with this patent date, see the pictures
This is one of 83,754 patents currently in the database at datamp.org

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