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Manufacturers Index - Pittsburgh Machine Tool 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
1,248,276 Nov. 27, 1917 Machine-tool Frank J. Curtis Ban Avon, PA "Difficulties are encountered in removing small and fine pieces of metal formed in cutting, drilling or boring holes, grooves or recesses in metal articles, when the latter are secured in a horizontal or approximately horizontal position as on the bed of a boring machine, planer or drilling press, while being operated upon..."