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US Patent: 8,114X
Steam cut-off (Steam engine)
Mode of operating steam engines
Patentee:
Zachariah Allen - Providence, Providence County, RI

USPTO Classifications:
74/568R

Tool Categories:
propulsion and energy : steam engines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Amber Everett
Thomas White

Patent Dates:
Granted: Mar. 28, 1834

Patent Pictures:
USPTO pdf tiff
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Description:
Listed in A List of Patents Issued by the United States, from 1790 to 1847, 1847, pgs. 159 & 364.

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. This is one of the recovered patents. This patent is in the database for reference only.

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