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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383,225
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May. 22, 1888
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Pressure-regulator
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Archie G. Hohenstein |
Brooklyn, NY |
"My invention relates to an improvement in pressure regulators, the object of the invention being to provide a pressure-regulator with a valve for opening or closing the passageway leading to the pressure regulator to enable the latter to be readily taken apart and dismantled for cleaning or repairs when necessary..." |
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383,226
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May. 22, 1888
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Automatic pressure-regulator and safety-valve
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Archie G. Hohenstein |
Brooklyn, NY |
"My invention relates to an improvement in automatic pressure-regulators and safety valves, the object being to provide a combined pressure-regulator and safety-valve which shall be capable of automatically controlling the high-pressure gas, steam, or water supply to any predetermined lower degree of service-pressure, and maintaining practically constant such lower degree of pressure in the service pipes or mains..." |