US Patent: 1,862,337 - Tap, drill, and similar tool


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US Patent: 1,862,337

Tap, drill, and similar tool

Patentee:

George W. Emrick (exact or similar names) - Brooklyn, NY

USPTO Classifications:

279/74, 279/79, 279/90, 403/DIG.007, 470/198

Tool Categories:

metalworking machines : drilling and boring : drill presses : drill press chucks

woodworking machines : wood drilling and boring : drill presses : drill press chucks

Assignees:

None

Manufacturer:

ETTCO Tool Co., Inc. - Brooklyn, NY

Witnesses:

Unknown

Patent Dates:
Applied:	Jan. 28, 1931
Granted:	Jun. 07, 1932

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for ETTCO Tool Co., Inc.

Description:

This tap-and-chuck (or drill-and-chuck) combination has means to provide a consistent depth registration, which is important in certain drilling and tapping machines so that the tip of the tap or drill is at a consistent position.