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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:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
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.

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