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Manufacturers Index - E. J. Worcester
Patents
This page contains information on patents issued to this manufacturer.

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If you find a patent number or patent date by this manufacturer that is not on this list, please contact the Site Historian.


Key to Links for Patent Information

USPTO = U.S. Patent Office . Images of the actual patent can be viewed on the U.S. Patent Office web site but a special TIFF viewer must be installed with your browser in order properly work. More information on how to configure your computer to view these patents can be found at TIFF image Viewers for Patent Images.
DATAMP = Directory of American Tool And Machinery Patents . A sister site to VintageMachinery.org with information on patents related to machinery and tools. A much easier user interface than the USPTO's for finding information on machinery patents.

Patent Number Date Title Name City Description
17,531 Jun. 09, 1857 Wrench Edward J. Worcester Worcester, MA The adjustable jaw is at right angles to the shank. A knurled exterior threaded nut engages a rack on the movable jaw to make the adjustment. According to Ken Cope's "American Wrench Makers 1830-1930" Hood & Perkins, Worcester, MA used this patent for an "S" handle adjustable wrench marketed in 1866. The same "S" handle has been found marked "Greene Rifle Works," where Mr. Hood was superintendent by 1867.
Henry Richards patented an "improvement" to this wrench in February, 1877 (pat. no. 186,954).
65,982 Jun. 18, 1867 Improved brush Edward J. Worcester Worcester, MA Inventor Worcester also received patents for drill presses.
99,803 Feb. 15, 1870 Improved drilling-machine Edward J. Worcester Worcester, MA
108,748 Oct. 25, 1870 Improvement in shingling-brackets Edward J. Worcester Worcester, MA
110,530 Dec. 27, 1870 Improvement in boring-machines Edward J. Worcester Worcester, MA
127,132 May. 21, 1872 Improvement in drilling-machines Albert F. Prentice Worcester, MA The assignees constituted A. F. Prentice & Co., so presumably they sold this drill to E. N. Boynton. It is likely that A. F. Prentice & Co. manufactured this drill, and also likely that Boynton & Plummer did also.
    Improvement in drilling-machines Edward J. Worcester Worcester, MA  
135,613 Feb. 04, 1873 Improvement in drilling-machines Edward J. Worcester Worcester, MA Tentatively identified as a patent seen on a Boynton & Plummer drill press.
138,975 May. 13, 1873 Improvement in bush-hammers Edward J. Worcester Worcester, MA This is a stone-dressing tool. The patent is of some interest because the inventor also patented drill presses.
193,437 Jul. 24, 1877 Improvement in machines for grinding mower and reaper knives Vernon F. Prentice Worcester, MA In 1877 E. J. Worcester was operating under his own name and Vernon F. Prentice was establishing Prentice Brothers with Benjamin W. Prentice.
    Improvement in machines for grinding mower and reaper knives Edward J. Worcester Worcester, MA  
197,711 Nov. 27, 1877 Improvement in machines for grinding lawn-motor cutter Edward J. Worcester Worcester, MA Inventor Worcester also received patents for drill presses.
274,243 Mar. 20, 1883 Drilling-machine Edward J. Worcester Worcester, MA