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US Patent: 41,289
Centering Heavy Articles in Lathes
John S. French - Boston, MA

USPTO Classifications:

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


Not known to have been produced

S. M. McIntire
Francis Gould
H. B. Darling
H. P. Langley

Patent Dates:
Granted: Jan. 19, 1864

Patent Pictures:
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J. B. Crosby-patent attorney

My invention relates to a means whereby large articles can be conveniently centered, as in a lathe or boring-mill; and it consists in the application of the journal of a spherical bearing to the end of the article to be centered, when said journal is of such construction as to admit not only of movement in its socket, but of lateral adjustment with respect to the article to be turned or bored, so that all the care which has to be exercised in adjustment of said journal is that which is needed to bring the center thereof into the line of the axis of the article to be turned or bored; also, in the construction of the spherical journal, substantially as shown, whereby any article may be centered with reference to its bore, instead of with reference to its outside.

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