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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1,769,898
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Jul. 01, 1930
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Unloading System for Compressors
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William E. Mathews |
Birmingham, Jefferson County, AL |
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1,795,310
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Mar. 10, 1931
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Compressor Unloader
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William E. Mathews |
Birmingham, Jefferson County, AL |
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3,839,946
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Oct. 08, 1974
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Nonlubricated Compressor
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Win W. Paget |
Homewood, Jefferson County, AL |
Abstract
A small multistage nonlubricated compressor for air and other gases has an open crankcase cooled by a fan, the stages being arranged in cruciform for cooling. In each stage, the piston is guided by a cylindrical crosshead. The crossheads are guided in cylindrical sleeves of self-lubricating plastic such as polytetrafluoroethylene. The pistons are guided in cylindrical sleeves of graphite and have piston rings of self-lubricating plastic. |