US Patent: 2,475,665 - Drill Spindle Driving Mechanism


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US Patent: 2,475,665

Drill Spindle Driving Mechanism

Patentee:

William G. Hoelscher (exact or similar names) - Cincinnati, Hamilton County, OH

USPTO Classifications:

235/89R, 408/133, 74/473.1

Tool Categories:

metalworking machines : metalworking machine mechanisms : metalworking power transmission

metalworking machines : drilling and boring : drill presses : radial drill presses

Assignees:

American Tool Works Co. - Cincinnati, Hamilton County, OH

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	Apr. 07, 1945
Granted:	Jul. 12, 1949

Patent Pictures:

USPTO (New site tip)
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"Vintage Machinery" entry for American Tool Works Co.

Description:

Original application 28 July, 1939. Divided and this application 07 April, 1945.

Claim:

It has been the object of the present inventor to provide an improved arrangement of the power shaft which delivers the power generally to the drill head of the radial drill. The improvement makes it possible to interchange without difficulty the a main driving gears, which connect the motor to the head driving shaft. These gears are disposed in a position where they are conveniently accessible and where their removal does not require any substantial disassembly. Accordingly, in the event that the operator desires a general increase or decrease in speed to the head, he can quickly remove the component driving gears and replace the same with another set of component gears of the desired ratio.