. Journal of electricity. chambers by transverse screens, which act to prevent backfiring. The upper end of the tube is provided with a heavyheat-resisting free burner tip. High Tension Line Switch Patent No. 1,246,303, issued to Earle A. Muckey, of San Francisco, California, discloses a high tension line switch. This switch comprises a rotatable shaft having an insulator disc on each end and a conducting arm arranged diametrically. on the outer face of each disc and the line wires are attachedto these arms. Arranged to one side of the shaft is a fixedconductor provided with contact clips into
. Journal of electricity. chambers by transverse screens, which act to prevent backfiring. The upper end of the tube is provided with a heavyheat-resisting free burner tip. High Tension Line Switch Patent No. 1,246,303, issued to Earle A. Muckey, of San Francisco, California, discloses a high tension line switch. This switch comprises a rotatable shaft having an insulator disc on each end and a conducting arm arranged diametrically. on the outer face of each disc and the line wires are attachedto these arms. Arranged to one side of the shaft is a fixedconductor provided with contact clips into which the arms aremoved to close the circuit when the shaft is rotated. Electric Annunciating SystemPatent No. 1,245,485, issued to David L. Martyn of NorthYakima, Washington, shows an electric annunciating device is particularly designed for a call system for hotelsand comprises a rotating drum having rows of aperturestherein corresponding in position to definite times. A contact <--£
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Keywords: ., bookcentury1900, bookdecade1910, bookidjo, booksubjectelectricity
