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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437,157
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Sep. 23, 1890
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Tapping-machine
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Henry W. Honeyman |
Providence, RI |
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680,863
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Aug. 20, 1901
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Grinding device
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Henry W. Honeyman |
Pawtucket, RI |
"My invention is designed to be run in an ordinary engine-lathe to grind interior circular surfaces, such as boxes, bushings,..." The assignee is known to have made a tapping accessory for drill presses so it seems plausible that they would have manufactured this lathe grinding attachment. But we have found no evidence that they did so and it's possible that it was only ever intended for their own use. Less than a year after this patent was issued, Granger Foundry and Machine Co. was part of a merger that created the Textile-Finishing Machine Co. of Boston. Textile machinery accounted for the great majority of Granger's business. |