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US Patent: 1,815,012
Tool attachments for lathes
Patentee:
William L. Schellenbach - Wyoming, OH

USPTO Classifications:
82/137, 82/138, 82/173

Tool Categories:
metalworking machines : metal lathes : metal lathe accessories

Assignees:
American Tool Works Co. - Cincinnati, OH

Manufacturer:
American Tool Works Co. - Cincinnati, OH

Witnesses:
Unknown

Patent Dates:
Applied: Jun. 19, 1929
Granted: Jul. 14, 1931

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for American Tool Works Co.
Description:
"The tool attachment herein disclosed is applied particularly for the formation of grooves in the surface of a cylindrical surface such as the periphery of a forging roll. In this type of work the grooves to be cut vary considerably as to longitudinal relief or depth and transverse relief. Each groove, formed in the roll, is a special cutting operation including shoulders and depressions throughout its length creating a problem in which movement of the tool must be definitely controlled and the repeating cuts uniform as the tool is moved into the work. For this purpose a relieving attachment is mounted on the cross slide of the lathe, in which a tool is mounted, on a pivoted tool holder rocked toward the work by means of templet cams..."

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