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Scientific American, Vol. 63, No. 20 (November 1890) (1890)

leaf 3

An illustration from Scientific American, Vol. 63, No. 20 (November 1890), 1890, leaf 3
o the work The illustration represents a recently perfected ma- nage of 111,853, or an amount very slightly in excess of is rigidly field against all movement for the cutting- chine, patented by Mr. Arthur W. Cash, which pre- the tonnage put afloat on the great lakes. The largest off operation,… … quired for the passage of an electric spark through costs only about seventeen cents for enough to cover 3,000 miles of wire. a square yard of surface, so that it would be really A PIPE-THREADING AND CUTTING-OFF MACHINE. To accomplish this the telegraph company is obliged possible to paint a room…

Shaft · Munn · Iron · Scientific American · Center · Congress approved · Central rod · Auxiliary barrel · Large gear · Single copies · Hot water · Express money · Perspective view · Breech cap

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