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Scientific American, Vol. 4, No. 21 (February 10, 1849) (1849)

leaf 3

An illustration from Scientific American, Vol. 4, No. 21 (February 10, 1849), 1849, leaf 3
vement in Rail Road Trucks. Patented Northern mechanic made the governer after name. From these pistons wires descend and desks of the members, and not in the usual al- Jan. 30, 1849. Mr. Petsch’s plan, who being something of a are conducted beneath the Present floor of the phabetical order of… … To John Sourbeer, of Mountjoy Township, vacuum by the air pump, the effective pres- This is a simple machine for covering bon- driving hollow spindle and bobbin A. I, brac- i Penn., for improvement in Flood Fences.— sure we believe will not be above 12 pounds net or telegraph wire, and which may be…

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