US Patent: 67,395 - Improvement in Machines for Twisting Augers


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US Patent: 67,395

Improvement in Machines for Twisting Augers

Patentees:

Willard L. Aldrich (exact or similar names) - Norwich, CT

William Evans (exact or similar names) - Seymour, CT

USPTO Classifications:

72/108

Tool Categories:

woodworking machines : specialty woodworking machines : tool making machines

woodworking tools : hand drills : drill bits : auger bits

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

H. B. Munson

Florence Crowley

Patent Dates:
Granted:	Aug. 06, 1867

Patent Pictures:

USPTO (New site tip)
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Description:

Utilizes rollers arranged on a slide rest along with regulating clamps to control the twist of the auger or bit shank.

The co-inventors of this patent, for "improvement in machines for twisting augers", asked for a reissue and were turned down. They appealed and it seems they won a partial victory:

http://books.google.com/books?id=-zVEAAAAIAAJ&num=100&pg=PA41#v=onepage&q=&f=false