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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1,392,957
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Oct. 11, 1921
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Pulley and sheath therefor
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Frank E. Matthews |
Bridgeport, CT |
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D141,416
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May. 29, 1945
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Filing machine or the like
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Ernst J. Tomek |
Danbury, CT |
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Filing machine or the like
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Daniel J. Williams |
Fairfield, CT |
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2,454,235
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Nov. 16, 1948
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Drilling machine
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Ernest J. Tomek |
Danbury, CT |
This drilling machine rotates the spindle via electric motor and advances and retracts it using hydraulic power. |
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D156,859
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Jan. 10, 1950
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Filing machine or the like
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Daniel J. Williams |
Fairfield, CT |
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2,922,217
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Jan. 26, 1960
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Filing machine
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Ferdinand John Kriz |
Fairfield, CT |
This filing machine supports the file from both ends, which allows the file to be tensioned, enabling more accurate and precise work. One suggest application is in blending straight surfaces into curved.
Nearly 12 years after this patent was granted, the inventor would be granted a West Germany patent that was assigned to the Producto Machine Co.; as far as we can tell, that invention was not granted a US patent. |