US Patent: 1,756,454 - Spring counterbalance for drill spindles


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US Patent: 1,756,454

Spring counterbalance for drill spindles

Patentee:

William C. De Roo (exact or similar names) - Cincinnati, OH

USPTO Classifications:

Tool Categories:

metalworking machines : drilling and boring : drill presses

woodworking machines : wood drilling and boring : drill presses

Assignees:

Fosdick Machine Tool Co. - Cincinnati, OH

Manufacturer:

Fosdick Machine Tool Co. - Cincinnati, OH

Witnesses:

Unknown

Patent Dates:
Applied:	Sep. 16, 1927
Granted:	Apr. 29, 1930

Patent Pictures:

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Vintage Machinery entry for Fosdick Machine Tool Co.

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