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US Patent: 38,922
Centering device for lathes
Patentee:
Joseph A. Talpey - Somerville, MA

USPTO Classifications:
279/108, 33/674

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Benjamin S. Munroe
Francis Russell
J. W. Coombs
G. W. Reed

Patent Dates:
Granted: Jun. 16, 1863

Patent Pictures:
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Description:
Munn & Co. - patent attorneys

Quoting from the 1863-07-04 issue of Scientific American: "The object of this invention is to obtain a simple and efficient device for expeditiously centering the ends of shafts and other articles which are to be turned in lathes. The invention consists in the employment for use of a tube provided externally with three or more pivoted cams and a conical slide, and having fitted within it a punch with a spring applied to it, the whole being so arranged and organized that by simply applying the end of the tube to the end of the article to be centered and shoving the conical slide on the tube the arms will grasp the article to be turned and adjust the tube to the centers of the article, which is centered by driving the punch into the end of the shaft."

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