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.
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664,512
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Dec. 25, 1900
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Chaser Grinding Machine
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Jacob B. Wallace |
Erie, Erie County, PA |
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692,988
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Feb. 11, 1902
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Drill-chuck
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Adelbert S. Davis |
Seneca Falls, NY |
The rights to this patent were assigned to the inventor's firm, Seneca Falls Mfg. Co. A 1930 appeals court lawsuit (see link) says that "plaintiff's drill chucks, referred to as 'Magic,' were first produced and sold in 1901, and continuously thereafter...under protection of letters patent No. 692,988, granted February 11, 1902, the patent being known as the Davis patent, which had been acquired by plaintiff's predecessor", that predecessor firm being the Modern Tool Co. of Erie, Pa. That same court document notes that on 1922-07-14, that firm was acquired by the appellant, the Consolidated Machine Tool Corp.; we do not list that firm as a manufacturer because this patent had already expired. |