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US Patent: 2,617,309
Variable-speed friction drive
Patentees:
Kenneth H. Casson (exact or similar names) - Rockford, IL
William G. Tyson (exact or similar names) - Rockford, IL

USPTO Classifications:
476/48, 476/55, 476/9

Tool Categories:

Assignees:
Barnes Drill Co. - Rockford, IL

Manufacturer:
Barnes Drill Co. - Rockford, IL

Witnesses:
Unknown

Patent Dates:
Applied: Apr. 18, 1951
Granted: Nov. 11, 1952

Patent Pictures:
USPTO (New site tip)
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Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Barnes Drill Co.

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