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US Patent: 1,056,670
Expansion Bit
Patentee:
Louis S. Hayden (exact or similar names) - Essex, CT

USPTO Classifications:
408/194, 408/195, 408/212, 408/213

Tool Categories:
woodworking tools : hand drills : drill bits

Assignees:
Connecticut Valley Mfg. Co. - Essex, CT

Manufacturer:
Millers Falls Co. - Greenfield, MA

Witnesses:
Walter H. Wright
Gordon L. Tucker

Patent Dates:
Applied: May 24, 1912
Granted: Mar. 18, 1913

Patent Pictures:
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Report data errors or omissions to steward Russ Allen.
"Vintage Machinery" entry for Millers Falls Co.
Description:
An adjusting screw is located in the clamp plate engaging teeth on the edge of the cutting blade. Sold by Millers Falls as their No 151 Expansive Bit.

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