US Patent: 1,512,231 - Safety means for drilling machines


	Home\| FAQ	Search:Advanced\|Person\|Company\| Type\|Class	Login


Quick search:	Patent number:	Patent Date:

US Patent: 1,512,231

Safety means for drilling machines

Patentee:

Oscar W. Mueller (exact or similar names) - Cincinnati, OH

USPTO Classifications:

408/129, 408/234, 408/710

Tool Categories:

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

Assignees:

Mueller Machine Tool Co. - Cincinnati, OH

Manufacturer:

Mueller Machine Tool Co. - Cincinnati, OH

Witnesses:

Unknown

Patent Dates:
Applied:	Mar. 05, 1923
Granted:	Oct. 21, 1924

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Mueller Machine Tool Co.

Description:

The "Safety" in the patent title is the safety of the machine rather than the operator: the invention is an interlock to prevent drill-arm elevation adjustment when the arm lock is engaged.