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US Patent: 193,437
Improvement in machines for grinding mower and reaper knives
Patentees:
Vernon F. Prentice - Worcester, MA
Edward J. Worcester - Worcester, MA

USPTO Classifications:
451/232, 451/372, 451/383, 451/548

Tool Categories:
metalworking machines : grinding machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
M. N. Reynolds
Charles H. Burleigh

Patent Dates:
Applied: Jun. 18, 1877
Granted: Jul. 24, 1877

Patent Pictures:
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"Vintage Machinery" entry for E. J. Worcester
Description:
In 1877 E. J. Worcester was operating under his own name and Vernon F. Prentice was establishing Prentice Brothers with Benjamin W. Prentice.

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