US Patent: 2,501,450 - Machine tool transmission


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US Patent: 2,501,450

Machine tool transmission

Patentee:

George K. McKee (exact or similar names) - Cincinnati, OH

USPTO Classifications:

474/35, 474/40

Tool Categories:

metalworking machines : drilling and boring : drill presses

woodworking machines : wood drilling and boring : drill presses

Assignees:

Avey Drilling Machine Co. - Covington, KY

Manufacturer:

Avey Drilling Machine Co. - Cincinnati, OH

Witnesses:

Unknown

Patent Dates:
Applied:	Jun. 29, 1945
Granted:	Mar. 21, 1950

Patent Pictures:

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Vintage Machinery entry for Avey Drilling Machine Co.

Description:

"In drilling machines, particularly the so called 'high speed' drilling machines, it is desirable to have a large range of drill speeds due to the fact that the diameter of drills and the kind of material to be drilled vary greatly. Drilling machines are frequently employed to effect tapping operations which again require different speeds from that of drilling and particularly a relatively slow speed to permit the tap to follow its lead while operating."