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US Patent: 2,430,458
Automatic screw control
Patentee:
Leo F. Farrell (exact or similar names) - South Haven, MI

USPTO Classifications:
269/182, 269/189, 269/249, 74/424.94

Tool Categories:
work holding : vises : bench vises

Assignees:
Titan Manufacturing Co. - Grand Rapids, MI

Manufacturer:
Wilton Tool Manufacturing Co. - Schiller Park, IL

Witnesses:
Unknown

Patent Dates:
Applied: Aug. 27, 1945
Granted: Nov. 11, 1947

Patent Pictures:
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Report data errors or omissions to steward Carl Matthews
"Vintage Machinery" entry for Wilton Corp.
Description:
This patent number was seen on a Wilton 3½" Triple Duty Vise. The patent covers a quick-release mechanism where the threads engage when turned in one direction but release when turned in the other direction.

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