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US Patent: 542
Machine for Thrashing and Separating Grain
Patentees:
John A. Pitts - Winthrop, ME
Hiram A. Pitts - Winthrop, ME

USPTO Classifications:
144/128, 460/86, 460/88

Tool Categories:
agricultural machines : threshers
trade specific : miller

Assignees:
None

Manufacturer:
L. D. Sawyer & Co. - Hamilton, ON Canada
Buffalo Pitts Co. - Buffalo, NY

Witnesses:
Samuel P. Benson
Caleb Harris

Patent Dates:
Granted: Dec. 29, 1837
Antedated: Jun. 29, 1837

Patent Pictures:
USPTO pdf tiff
Google Patents
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Threshing machines
L. D. Sawyer & Co.
"Vintage Machinery" entry for Buffalo Pitts Co.

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