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US Patent: 1,536,320
Automatic stud driver and releasing mechanism
Patentee: William Maxion Ziegler (exact or similar names) - Richmond, IN USPTO Classifications: 81/53.2 Tool Categories: specialty tools : stud drivers Assignees: Apex Machine Co. - Dayton, OH Manufacturer: Apex Machine Co. - Dayton, OH Witnesses: Unknown	Patent Dates: Applied: Oct. 02, 1924 Granted: May 05, 1925 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Apex Machine Co.
Description: Stud driver that aims to avoid the stud becoming stuck to the driver and unscrewing from the workpiece when the driver is reversed.

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