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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1,429,866
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Sep. 19, 1922
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Drill press
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James D. Gibbs |
Louisville, KY |
This patent was withdrawn and is not in the USPTO database. The information here is from the Gazette.
"1. A variable speed mechanism comprising two reversely placed multi-grooved cone wheels journaled on parallel axes, a member mounted to have reciprocating motion perpendicular to the said exes, a bracket arm slidably carried by said part and having a suitable operating handle, an idle wheel rotatably carried by said bracket arm, and adapted to engage the grooves of said cone wheels, and spring means acting on said slidable member to press the idle wheel towards the cone wheels." |
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1,477,052
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Dec. 11, 1923
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Friction gearing
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James D. Gibbs |
Louisville, KY |
This friction gearing is a variation on that seen in patent 1,429,866, which was subsequently withdrawn. Both patents were based on the same application. This patent's date has been seen on a sensitive drill press built by Gibbs General Machine Co. and distributed by Jos. T. Ryerson & Co. The patent number is listed in a promotional brochure for the US version of the Schaffner lathe that was made in Switzerland. The brochure also mentions the "Gibbs V-Disc Transmission". |