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US Patent: 5,077X
Revolving hydraulic engine
Patentee:
Asahel Hubbard - Windsor, VT

USPTO Classifications:

Tool Categories:
water distribution systems : pumps

Assignees:
None

Manufacturer:
Hubbard & Co. - Windsor, VT

Witnesses:
Unknown

Patent Dates:
Granted: Apr. 22, 1828

Patent Pictures: [ 1 | 2 | 3 ]
Photo courtesy of the American Precision Museum
USPTO pdf tiff
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American Precision Museum
Description:
Most of the patents prior to 1836 were lost in the Dec. 1836 fire. Only about 2,000 of the almost 10,000 documents were recovered. Little is known about this patent. There are no patent drawings available. This patent is in the database for reference only.

According to information from the American Precision Museum, who have this pump, it was produced for Hubbard & Co. by inmates at the Vermont State Prison.

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