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US Patent: 150,672
Improvement in drill-chucks
Patentee: George D. Belcher (exact or similar names) - 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: USPTO (New site tip) Google Patents Report data errors or omissions to steward George Langford
Description: The inventor would later patent what became the Chicopee Automatic Drill, patent 240,223.

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