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US Patent: 487,775
Duplex feed mechanism
Patentee:
Francis H. Richards - Hartford, CT

USPTO Classifications:
409/156, 74/425, 74/89.14, 74/89.17

Tool Categories:
metalworking machines : milling machines

Assignees:
Walter Wood - Hartford, CT

Manufacturer:
Not known to have been produced

Witnesses:
Henry L. Reckard
Emma G. Fowler

Patent Dates:
Applied: Mar. 25, 1892
Granted: Dec. 13, 1892

Patent Pictures:
USPTO pdf tiff
Google Patents
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Description:
The invention is a two-speed feed mechanism. Francis Richards was a professional inventor. and we could not determine who Walter Wood was.

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