. Journal of electricity, power, and gas . d the extra contactors are replaced by a solenoidoperated switch. The controllers are equipped with the new CR 187 unitswhich are non-fragile, fire and moisture proof, and thoroughlyventilated. The control panel shown in Fig. 2 contains two pilot lampstor indicating the position of the valve gates, and two relaysfor closing the circuit of the coils which close the relays are so interconnected that should one be closedand an attempt made to close the other, the one previouslyclosed would open, preventing any possibility of a short cir-cu
. Journal of electricity, power, and gas . d the extra contactors are replaced by a solenoidoperated switch. The controllers are equipped with the new CR 187 unitswhich are non-fragile, fire and moisture proof, and thoroughlyventilated. The control panel shown in Fig. 2 contains two pilot lampstor indicating the position of the valve gates, and two relaysfor closing the circuit of the coils which close the relays are so interconnected that should one be closedand an attempt made to close the other, the one previouslyclosed would open, preventing any possibility of a short cir-cuit resulting from this action and making the device foolproof. The switch arm of the limit switch is moved over thecontacts by a rod attached to the valve stem. The length ofthe rod is so adjusted that when the valve is completelyopened or closed Lhe limit switch is either at the upper orlower end of its travel, where it short circuits the coils whichclose the contactors allowing the latter to open, disconnect-ing the motor from the Fis Limit Switch ot CR 130 Valve Controller. The valve is opened by pushing up the core of the relaymarked to open on the control panel, closing the circuitthrough two of the contactors on the starting panel and apply-ing half voltage to the pilot lamp causing it to burn dimly,indicating to the operator that the valve is being the limit switch opens the line contactors it also appliesfull voltage to the pilot lamp which then continues to burnat full brilliancy as long as the valve remains open. Thepilot lamps indicate the position of the valves at all times. • TRADE NOTES. H. W. Johns-Manville Co., New York, who are the soleselling agents for the well known line of Noark EnclosedFuses, and accessories, manufactured by the Johns-Pratt Com-pany, of Hartford, Conn., announces that on December 14,1909, the United States Circuit Court of Appeals for the SecondCircuit held that the Sachs Company, and Joseph Sachs itspresident, have in
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Keywords: ., bookcentury1800, bookdecade1890, bookidjo, booksubjectelectricity
