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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30,157
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Sep. 25, 1860
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Blower
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Philander H. Roots |
Connersville, IN |
This patent is the genesis of the famous Roots blower. Philander H. Roots applied for an extension on this patent (or rather, on the reissue of this patent), but Roots's own testimony indicated that this design was found to be virtually useless because of excessive wear. An 1866 improvement, patent 56,614, added wooden rims to the pistons, and that is the design that became successful. The patent commissioner also noted that the reissue added new claims that could not be found in the original drawing or description, and therefore any extension would have had to disclaim those new claims. |
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44,892
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Nov. 01, 1864
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Improvement in blower-cases
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Philander H. Roots |
Connersville, IN |
See also patent 30,157. |
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56,614
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Jul. 24, 1866
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Improvement in cross-heads for blowers
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Francis M. Roots |
Connersville, IN |
The original Roots blower design suffered from rapid wear of the pistons. This invention adds wooden rims to the pistons to reduce friction and wear. This alteration was apparently successful and the Roots blower sold very well afterwards. |
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Improvement in cross-heads for blowers
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Philander H. Roots |
Connersville, IN |
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RE2,369
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Oct. 02, 1866
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Improvement in blowers
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Philander H. Roots |
Connersville, IN |
See the text description for the original patent for information on Roots's application for an extension to this patent. |
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108,941
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Nov. 01, 1870
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Portable Forge
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Philander H. Roots |
Connersville, Fayette County, IN |
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Portable Forge
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Francis M. Roots |
Connersville, Fayette County, IN |
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349,360
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Sep. 21, 1886
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Portable Forge
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Francis M. Roots |
Connersville, Fayette County, IN |
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