oil the apparatus is attached by the screw thread, In the figure, a is the main ring, held by of their general class. A patent for an im- Jj. The cylinder, A, is furnished with two without leaving his stand for that purpose, the bolt, 5,0n which is the small pinion, c, provement in the ordinary… … without the necessity of cessation or manual may complete the preparation of the ore, in interference until they are completed for use. stead of two. This he proposes to accomplish After thelink iscut out and partly formed by the by giving a rotary motion to the stampersal- From the extremity of…
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