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Scientific American, Vol. 7, No. 14 (December 1851) (1851)
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rimtife ^mwtiiwi sees &stc&&o §s ataararsoT. &sna soiffiaH^a; ©3 selotlotb, BrBEi&kmB&i &ra ©aiasa mammm. [NUMBER 14. NEW-YORK, DECEMBER 20,1851. VOLUME VII.] end of which is a pulley, F, from which a belt STONE DRESSING BY MACHINERY.—Pig. 1. Scientific American, drives the pulley, E, on the shaft… … &c. The stone yard is like a hive of bees. ced. These are great truths. Senator Gwin, shaft, C, passes, and in which it rotates; this We here present engravings-51 two ma- The stones are landed on the yard dock direct from CalifornjajsJtsJCoJieies* to construct a slide is capable of moving up and…Patents · Railroad · Planing · Stone · Iron · Carbonic acid · Force · Steam engine · Small pox · Patent office · Wrought iron · Steam engines · Suspension bridge · Acid gas · Moving body · Patent band
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