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US Patent: 150,672
Improvement in drill-chucks
Patentee:
George D. Belcher - Springfield, MA

USPTO Classifications:
279/64

Tool Categories:
woodworking tools : hand drills : drill chucks

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
William L. Smith
James F. Traftan

Patent Dates:
Applied: Apr. 21, 1874
Granted: May 12, 1874

Patent Pictures:
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Description:
The inventor would later patent what became the Chicopee Automatic Drill, patent 240,223.

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