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US Patent: 2,401,276
Tripping mechanism
Patentees:
John H. McKewen (exact or similar names) - Cincinnati, OH
Lawrence Lee Schauer (exact or similar names) - Wyoming, OH

USPTO Classifications:
173/5, 408/129

Tool Categories:
metalworking machines : drilling and boring : drill presses
woodworking machines : wood drilling and boring : drill presses

Assignees:
Cincinnati Bickford Tool Co. - Cincinnati, OH

Manufacturer:
Cincinnati Bickford Tool Co. - Cincinnati, OH

Witnesses:
Unknown

Patent Dates:
Applied: May 22, 1945
Granted: May 28, 1946

Patent Pictures:
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Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Cincinnati Bickford Tool Co.
Description:
This tripping mechanism for drill presses supports both an immediate withdrawal of the drill, as when through drilling, as well as a delayed withdrawal, as when spot facing.

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