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Scientific American, Vol. 2, No. 12 (1860) (1860)

leaf 15

An illustration from Scientific American, Vol. 2, No. 12 (1860), 1860, leaf 15
are employed in fastening reciprocating furnished from America ; that is, out of every seven saws into their frames. pounds received in England, five came from the United It consists of two cast iron plates, A and B, which are States. India furnished 500,000 bales; Egypt, 100,000 ; secured into the… … patents issued each week at the United Statee Patent Office, besides exceedingly useful in rolling logs, is-so awkward for any a projection from the plate, B, passes through a slot in elaborate notices of the most important inventions, many of which other purpose, that it is employed only for this…

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