. Journal of electricity. then flowed into a closed retort and maintained under con-trollable pressure and subjected to the action of an electricarc within the chamber. The arc breaks dov/n the vapor intoa plurality of fractionated vapors which are conducted fromthe chamber and condensed. Water HeaterPatent No. 1,251,210, issued to Ida R. Forbes of Los An-geles, California, shows an electrical water heater employinga rather complex system of control. The heater consists ofa tank in which is arranged an adjustable thermostat which —t;. ■ , controls the circuit of an electro-magnet arrange
. Journal of electricity. then flowed into a closed retort and maintained under con-trollable pressure and subjected to the action of an electricarc within the chamber. The arc breaks dov/n the vapor intoa plurality of fractionated vapors which are conducted fromthe chamber and condensed. Water HeaterPatent No. 1,251,210, issued to Ida R. Forbes of Los An-geles, California, shows an electrical water heater employinga rather complex system of control. The heater consists ofa tank in which is arranged an adjustable thermostat which —t;. ■ , controls the circuit of an electro-magnet arranged externallyof the tank. The electro-magnet is connected with circuitcontrolling means arranged in the heating element circuit, sothat when the heating element has raised the temperature ofthe water to the point at which the thermostat is set, theelectro-magnet is operated to open the circuit of the heatingelement. RectifierPatent No. 1,251,269, issued to Harry A. Mulvany andHarry E. Kennedy of Berkeley, California, and assigned tothe Electric Sales Service Company of San Francisco, dis-closes a novel form of rectifier. The device consists of a pairof electrodes, one of which is a metallic screen and the otherof which is a pointed rod which is spaced from and pointedtoward the screen. The pointed rod is heated to a tempera-ture sufficiently high to establish a discharge of cathode raysfrom it toward the screen, and a current of air is blown overand through the screen to remove ionized air and metallicgases from between the electrodes, a
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Keywords: ., bookcentury1900, bookdecade1910, bookidjo, booksubjectelectricity
