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US Patent: 2,141,209
Tapping attachment
Patentee: George W. Emrick (exact or similar names) - Brooklyn, NY USPTO Classifications: 470/182, 475/159, 475/298, 475/327 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: Aug. 12, 1937 Granted: Dec. 27, 1938 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: Improvements to a tapping machine where the upward return speed is faster than the downward (tapping) speed.

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