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Scientific American, Vol. 89, No. 10 (September 1903) (1903)
leaf 12
inducing hisfellow citizens to avail themselves o£ the discovery. © 1903 SCIENTIFIC AMERICAN, INC September 5, 1903. Scientific American 173 LAIlVKllBi^l^lisaK^lliff^ %Paient g^ Department^ VARIABLE SPEED GEAR FOR MOTOR-DRIVEN SEWINGMACHINES.The advantages of using an electric motor to operatea… … graving, which Shows a device adapted to use therolling motion of a ship to work the vessels pumps.The invention, which is to be credited to Mr. David Li.Bradly, editor of the American Ship Builder, NewYork city, is simplicity itself, comprising merely atrough hinged at the center to a standard and…Thread · Feet · Transformer · Apparatus · Sewing machine · Scientific American · Mineral waters · Hertzian waves · Horse power · Small quantity · Turbine yacht · Primary winding · Sulphuric acid · Viscid matter
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