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1,692
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Jul. 18, 1840
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Lathe Chuck
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Simon Fairman |
Waterford, Saratoga County, NY |
The 1851 Rochester City Directory spells the patentee's name as Simeon Fairman, Sr.
The 1873 "Subject-matter index of patents for inventions issued by the United States Patent Office" says that this patent was extended to July, 1854.
Abstract:
The practical effect of the machine upon which my improvements are made, as applied to chucks to lathes, is to adapt them, in respect to size, to such articles as are subjected to the process of turning, and furnish an improved method of obtaining a center to the same as well as for securing them in the lathe for the purpose of being turned. Its application to pulleys is for the purpose of increasing or reducing the temper of their bands or for varying the speed of the band by applying the machine to the pulley which gives it motion or by a like application to that which receives motion from it, for rendering its revolution, under the same speed of band, more or less frequent or powerful.
Claim:
The method of securing together the front and back plates by means of the tubes and nut, by which I am enabled to attach the front plate directly to the mandrel or face plate, of the latter all as above described, in like manner. |