US Patent: 24,773 - Pump-Log Hollow Auger


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US Patent: 24,773

Hollow Auger
Pump-Log Hollow Auger

Patentee:

Arcalous Wyckoff (exact or similar names) - Elmira, NY

USPTO Classifications:

408/204

Tool Categories:

woodworking tools : hand drills : drill bits : hollow bits

woodworking machines : wood drilling and boring

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

A. B. Galatian

A. G. Reynolds

Patent Dates:
Granted:	Jul. 12, 1859

Reissue Information:
Reissued as RE2,204 (Mar. 13, 1866)

Patent Pictures:

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Vintage Machinery entry for Arcalous Wyckoff

Description:

The aperture in the cutter is slightly elliptical, with the primary cutters (a) placed at the smaller dimension. The core-piece, therefore, is slightly smaller in diameter than the inside of the tubing body, reducing friction. Also, there are secondary cutters (d) just behind the primary cutters, which make shear cuts on a tangent to the core, with the aim of smoothing the core's surfaces and further reducing friction.

This patent was granted an extension by/before 1874.