US Patent: 2,581,683 - Variable-speed drive


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US Patent: 2,581,683

Variable-speed drive

Patentee:

James McEwan (exact or similar names) - San Jose, CA

USPTO Classifications:

451/294, 474/27, 74/536

Tool Categories:

metalworking machines : metalworking machine mechanisms : metalworking power transmission

metalworking machines : grinders : sharpening machines : saw sharpening machines

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	Dec. 09, 1949
Granted:	Jan. 08, 1952

Patent Pictures:

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Vintage Machinery entry for Max Mfg. Co.

Description:

Of interest because inventor McEwan seems to have been the founder and owner of woodworking machinery maker Max Mfg. Co. It is not known whether this particular product was made by Max.