US Patent: 948,825 - Change-speed and reverse-drive mechanism


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US Patent: 948,825

Change-speed and reverse-drive mechanism

Patentee:

Arthur C. Pletz (exact or similar names) - Cincinnati, OH

USPTO Classifications:

474/62, 474/7

Tool Categories:

metalworking machines : drilling and boring : drill presses

woodworking machines : wood drilling and boring : drill presses

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Carroll H. Richards

Joseph R. Gardner

Patent Dates:
Applied:	Sep. 18, 1908
Granted:	Feb. 08, 1910

Patent Pictures:

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Description:

"The object of this invention is to provide a mechanism which will give two forward and two reverse speeds without shifting the belts on the cone pulleys. Furthermore to make this mechanism especially adaptable to metal drills, where it would be very advantageous in the operation of drills designed to do both drilling and tapping..."

The inventor worked for a series of machine tool manufacturers, and in 1915 he was intending to start his own business to manufacture machine tools. This effort did not come to fruition and as far as we know, this invention was never manufactured.