US Patent: 3,146,628 - Power tool and transmission therefor


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US Patent: 3,146,628

Power tool and transmission therefor

Patentees:

David D. Pettigrew (exact or similar names) - Pittsburgh, PA

Edward C. Warrick (exact or similar names) - Pittsburgh, PA

John H. Diehl (exact or similar names) - Pittsburgh, PA

USPTO Classifications:

474/29

Tool Categories:

metalworking machines : drilling and boring : drill presses

woodworking machines : wood drilling and boring : drill presses

Assignees:

Rockwell Mfg. Co. - Pittsburgh, PA

Manufacturer:

Rockwell Mfg. Co. - Pittsburgh, PA

Witnesses:

Unknown

Patent Dates:
Applied:	Dec. 28, 1961
Granted:	Sep. 01, 1964

Patent Pictures:

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Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Delta Specialty/Delta Mfg. Co./Delta-Rockwell/Rockwell Intl.

Description:

Invention is a low-cost variable-speed V-belt drive system for a drill press. Referenced patents include 2,395,599, 2,480,492, 2,487,980, and 2,604,794, all of which are claimed to be too complex, too bulky and too expensive.