US Patent: 209,646 - Improvement in metal-drilling machines


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US Patent: 209,646

Improvement in metal-drilling machines

Patentees:

Edwin N. Boynton (exact or similar names) - Worcester, MA

George M. Coburn (exact or similar names) - Worcester, MA

Thomas F. Carver (exact or similar names) - Worcester, MA

USPTO Classifications:

408/137

Tool Categories:

metalworking machines : drilling and boring : drill presses

woodworking machines : wood drilling and boring : drill presses

Assignees:

Edwin N. Boynton - Worcester, MA

Manufacturer:

Boynton & Plummer - Worcester, MA

Witnesses:

H. M. Rice

Michael J. Lavin

Patent Dates:
Applied:	Aug. 06, 1878
Granted:	Nov. 05, 1878

Patent Pictures:

USPTO (New site tip)
Google Patents
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Vintage Machinery entry for McMahon & Carver
Vintage Machinery entry for Boynton & Plummer
Vintage Machinery entry for E. N. Boynton

Description:

Partner Plummer had worked for R. Ball & Co. in the 1860s, but by 1871 he seemed to be on his own. In 1871 Boynton was running E. A. Bagley & Co., which made screws. Co-inventor Carver went on to be a partner in engine lathe maker McMahon & Carver