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Scientific American, Vol. 21, No. 8 (1869) (1869)

leaf 5

An illustration from Scientific American, Vol. 21, No. 8 (1869), 1869, leaf 5
gements of the lever to accomplish the end ; planation, and explicit directions for using, applying, ete. Clinton, Texas. one of which you give. JI have an arrangement of a single Retail hardware merchants sell a great many patented arti- lever at the top of the rod, but it also requires three… … air, which, at the pressure of 144 lbs. per square in. weighs Inclosed I send you a diagram of a plan I prefer to all oth- “Tt is so simple that a child can understand it.” In one sense 0:08 lbs. per cubic foot, its pressure on a square foot must ers. It is decidedly the most simple in appearance,…

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