US Patent: 2,162,251 - Tapping attachment


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US Patent: 2,162,251

Tapping attachment

Patentee:

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

USPTO Classifications:

475/298, 475/302

Tool Categories:

metalworking machines : drilling and boring : tapping heads and chucks

Assignees:

None

Manufacturer:

ETTCO Tool & Machine Co., Inc. - Brooklyn, NY

Witnesses:

Unknown

Patent Dates:
Applied:	Dec. 16, 1938
Granted:	Jun. 13, 1939

Patent Pictures:

USPTO (New site tip)
Google Patents
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Vintage Machinery entry for ETTCO Tool Co., Inc.

Description:

Improvements to patent 2,162,250 to use a planetary gear drive as in patent 1,758,656, which is small in the vertical dimension. There are also improvements to lubrication of the gearing.