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US Patent: 913,312
Boring, Turning, and Facing Machine
Patentee:
Ernest Burchard Sellew (exact or similar names) - Pawtucket, RI

USPTO Classifications:
144/46, 29/27B, 29/27R, 29/888.075, 82/138

Tool Categories:
metalworking machines : drilling and boring
metalworking machines : metal lathes

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
C. N. Greisbauer
William M. Gilker
Fred Newell Roberts

Patent Dates:
Applied: Jul. 30, 1906
Granted: Feb. 23, 1909

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Sellew Machine Tool Co.
Description:
H. B. Willson & Co. - patent attorneys

My invention relates to improvements in metal working machines, and more particularly to "one for automatically dressing or finishing metal work-blanks. One object of the invention is to provide a machine for automatically and continuously turning, boring and facing, grooving, cutting off or otherwise acting upon a piece of metal to produce a finished article or articles from a rough, blank, the present embodiment of the invention being adapted for automatically making eccentrically-bored piston rings. Another object of the invention is to provide a machine of this character with an internal eccentric differential gear feed mechanism for reducing the speed between the driving and driven parts of the machine. A further object of the invention is to improve and simplify the construction of machines of this character and thereby render the same more efficient.

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