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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107,555
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Sep. 20, 1870
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Improvement in machines for dovetailing window-sash
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De Witt C. Smith |
Montgomery, IL |
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321,763
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Jul. 07, 1885
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Wood-turning lathe
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De Witt C. Smith |
St. Paul, MN |
The February 1886 Manufacturer and Builder had an illustrated article (p. 30) on this lathe. The lathe allows a turner to simultaneously cut about 40 work-pieces at a time. Each piece is cut to length and of regular polygonal (e.g., square, octagon) cross-section and is then clamped to the periphery of a large rotating drum. The lathe is then started and the turner can cut the profile on the outward face of each work-piece. The pieces are then rotated 90 degrees and the process is repeated. When all sides have been cut the pieces are removed from the lathe. |
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Wood-turning lathe
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Spencer E. Smith |
St. Paul, MN |
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321,762
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Jul. 07, 1885
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Lathe for turning polygonal forms
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De Witt C. Smith |
St. Paul, MN |
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Lathe for turning polygonal forms
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Spencer E. Smith |
St. Paul, MN |
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