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US Patent: 3,780,423
Tool Changer
Alfred J. Lilienthal - Bourbonnais, Kankakee County, IL
Theodore F. Johnson - Cincinnati, Hamilton County, OH
William E. Petri, Jr. - Cincinnati, Hamilton County, OH
Charles E. Gilbert, Jr. - Cincinnati, Hamilton County, OH

USPTO Classifications:
483/52, 483/53, 483/60

Tool Categories:
metalworking machines : metalworking machine mechanisms : workpiece changers and storage mechanisms

Cincinnati Gilbert Machine Tool Co. - Cincinnati, Hamilton County, OH

Not known to have been produced


Patent Dates:
Applied: Jul. 15, 1970
Granted: Dec. 25, 1973

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for Cincinnati Gilbert / Dreses Machine Tool Co.


An automatic tool changer for use on a machine tool which moves tools in combinations of rectilinear movements between a spindle at a machine head and a rectangular array of compartments, parallel to the spindle axis, at a storage magazine. The storage magazine is mounted on the support of the machine tool to move in unison with the machine head, and includes a plurality of drawers which move at right angles to a pair of tool forks for transferring tools to and from the forks. The forks are independently linearly movable on a carriage which moves between the storage magazine and the machine head. One tool fork carries tools exclusively from the magazine to the spindle, and the other tool fork carries tools exclusively from the spindle to the magazine. The entire tool changer is movable relative to the machine head to insert tools into and withdraw tools from the spindle.

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