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US Patent: 230,158
Machine for testing lubricants
Patentee:
Robert H. Thurston (exact or similar names) - Hoboken, NJ

USPTO Classifications:
73/10, 73/9

Tool Categories:
specialty machines : testing machines

Assignees:
None

Manufacturer:
Pratt, Whitney & Co. - Hartford, CT

Witnesses:
F. E. Idell
F. T. Thurston

Patent Dates:
Applied: Apr. 29, 1878
Granted: Jul. 20, 1880

Patent Pictures:
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Vintage Machinery entry for Pratt & Whitney Co.
Description:
The inventor was professor of mechanical engineering in the Stevens Institute of Technology in Hoboken. An 1893 catalog from Pratt & Whitney shows an "Improved Standard Railroad Oil Testing Machine. Prof. R. H. Thurston's patents." The only other R. H. Thurston patent wee have found is patent 155,051, which relates to torsion testing; that machine was also manufactured by Pratt & Whitney.

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