US Patent: 357,567 - Metal-turning lathe


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US Patent: 357,567

Metal-turning lathe

Patentee:

William F. Barnes (exact or similar names) - Rockford, IL

USPTO Classifications:

142/47, 144/33, 74/424.78, 74/89.32, 82/136, 82/141

Tool Categories:

metalworking machines : metal lathes

Assignees:

None

Manufacturer:

W. F. & John Barnes Co. - Rockford, IL

Witnesses:

Frank E. Humeston

A. O. Behel

Patent Dates:
Granted:	Feb. 15, 1887

Patent Pictures:

USPTO (New site tip)
Google Patents
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Vintage Machinery entry for W. F. & John Barnes Co.

Description:

This patent covers the use of two feed-screws, one rotating forward and the other rotating backward. A "semi screw-nut" engages one or the other feed-screws to control the direction of carriage movement. It was used on Barnes metal lathes such as the No. 4½.