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US Patent: 799,973
Speed Control for Machine-Tools
Patentees:
William Lodge - Cincinnati, OH
Nicholas D. Chard - Cincinnati, OH

USPTO Classifications:
82/143, 82/144

Tool Categories:
metalworking machines : machine tool controls
metalworking machines : metal lathes

Assignees:
Lodge & Shipley Machine Tool Co. - Cincinnati, OH

Manufacturer:
Lodge & Shipley Machine Tool Co. - Cincinnati, OH

Witnesses:
Luise Beck
Oliver B. Kaiser

Patent Dates:
Applied: Jan. 03, 1905
Granted: Sep. 19, 1905

Patent Pictures:
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"Vintage Machinery" entry for Lodge & Shipley Machine Tool Co.
Description:
Wood & Wood - patent attorneys

Our invention relates to a machine organization employing a rotary member and a rectilineal moving member driven from a common source, the object being to provide in combination therewith mechanism automatically actuated by the longitudinally moving member to change the speed of rotation of the rotary member. This is useful in machine tools wherever it may be desirable to change the speed of the rotary member relative to the carriage travel while operating upon a given job, the gradations of cutting speed being produced by the moving carriage. Our invention particularly and as exemplified by the drawings is applied to an engine lathe in which the tool-holding carriage causes a gradation of spindle-speed, whereby a given job is subjected to varying cutting speeds selected to best satisfy the character of the work. Our invention also provides means for cutting out the automatic arrangement and controlling the speed by hand devices located on the carriage. Our invention also provides means for automatically throwing out the automatic speed controlling mechanism at a predetermined point of carriage travel.

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