US Patent: 1,297,256 - Drilling Machine


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US Patent: 1,297,256

Drilling Machine

Patentees:

Herman W. Schatz (exact or similar names) - Norwood, Hamilton County, OH

Augustus M. Sosa (exact or similar names) - Cincinnati, Hamilton County, OH

USPTO Classifications:

74/333, 74/344

Tool Categories:

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:	Sep. 10, 1917
Granted:	Mar. 11, 1919

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for American Tool Works Co.

Description:

Claim:

Our invention relates to means for driving the drill-spindle of a drilling machine at a. plurality of selective speeds. It is the object of our invention to provide novel means whereby a. wide range of speeds is obtained for the drill-spindle in manner to avoid excessive variations in the speeds of rotation of the driving gears.