US Patent: 606,634 - Friction-clutch


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US Patent: 606,634

Friction-clutch

Patentees:

Alexander Lesperance (exact or similar names) - Laconia, NH

Thomas H. Worrall (exact or similar names) - Laconia, NH

USPTO Classifications:

192/103A, 192/70.24, 192/70.27, 192/93R

Tool Categories:

metalworking machines : metalworking machine mechanisms : metalworking power transmission

industrial machines : industrial machine mechanisms : industrial machine clutches

Assignees:

Thomas H. Worrall - Laconia, NH

Manufacturer:

American Twist Drill Co. - Laconia, NH

Witnesses:

John W. Ashman

Edgar F. Reeves

Patent Dates:
Applied:	Mar. 18, 1893
Granted:	Jun. 28, 1898

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for A. B. Nutting & Co.

Description:

A double-ended grinder arbor with separate clutches for each wheel is reported. It has "A. B. Nutting & Co. / Amesbury Mass. / Patent Applied For" cast into the bearing covers; a separate brass plaque says, "Am. Twist Drill Co. / Laconia, N.H. / Patented Nov 24, 91 / May 5, 96 / July 13, 97 / June 28, 98 / Oct. 30, 06"

Assignee Worrall was co-founder of the American Twist Drill Co.