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

Submitting Patent Information

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
94,955 Sep. 14, 1869 Improved compound for emery-wheels and oil-stones R. J. Costain Northampton, MA
    Improved compound for emery-wheels and oil-stones N. B. Hadley Northampton, MA  
261,848 Aug. 01, 1882 Emery Grinder Benjamin H. Hadley Providence, RI
314,574 Mar. 31, 1885 Drilling-lathe Benjamin H. Hadley Providence, RI This patent was seen on a lathe from Diamond Emery Wheel & Machine Co., which later became Diamond Machine Co. The patent covers the tail-stock quick-release mechanism.