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Manufacturers Index - Curtis & Curtis Co.
Patents
This page contains information on patents issued to this manufacturer.

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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
253,996 Feb. 21, 1882 Screw-cutting die William D. Forbes Bridgeport, CT A 1909 ad from Curtis & Curtis Co. features "The Forbes Patent Die Stock" which was claimed to have "revolutionized pipe cutting and threading methods."
270,407 Jan. 09, 1883 Screw-threading machine William D. Forbes Bridgeport, CT Improvements to patent 253,996. See also patents 270,408 and 270,409.
270,408 Jan. 09, 1883 Screw-threading machine William D. Forbes Bridgeport, CT Improvements to patent 253,996. See also patents 270,407 and 270,409.
270,409 Jan. 09, 1883 Screw-threading machine William D. Forbes Bridgeport, CT Improvements to patent 253,996. See also patents 270,408 and 270,409.
16,422 Mar. 01, 1883 Die-stock William D. Forbes Bridgeport, CT The inventor's middle name was "Dunderdale", and his occupation was "Mechanical Engineer".
356,871 Feb. 01, 1887 Pipe and rod vise William D. Forbes Bridgeport, CT
363,626 May. 24, 1887 Die-stock William D. Forbes Bridgeport, CT Improvements to patents 270,407 and 270,408, which describe a pipe-threading machine.
A 1909 ad from Curtis & Curtis Co. features "The Forbes Patent Die Stock" which was claimed to have "revolutionized pipe cutting and threading methods."
437,291 Sep. 30, 1890 Machine for Simultaneously Threading a Plurality of Bolts Roderick P. Curtis Southport, Fairfield County, CT
439,122 Oct. 28, 1890 Pipe and Bolt Threading Attachment for Lathes Lewis B. Curtis Southport, Fairfield County, CT
443,500 Dec. 30, 1890 Pipe Threading Machine Roderick P. Curtis Southport, Fairfield County, CT
    Pipe Threading Machine Lewis B. Curtis Southport, Fairfield County, CT  
443,501 Dec. 30, 1890 Pipe Threading Machine Roderick P. Curtis Southport, Fairfield County, CT
443,502 Dec. 30, 1890 Pipe Threading Machine Roderick P. Curtis Southport, Fairfield County, CT
465,838 Dec. 29, 1891 Pipe Threading Attachment for Lathes Lewis B. Curtis Southport, Fairfield County, CT