. Induction coils : how to make, use, and repair them including Ruhmkorff, Tesla, and medical coils, Roentgen radiography, wireless telegraphy, and practical information on primary and secondary battery . raising the armature has also twistedor partially revolved it, so as to bring thenotch d in the armature over the end of thehook e, as shown in dotted lines. Whenthe circuit is broken by lifting the fingerfrom the button the notch falls into thehook and the valve is locked open. To extinguish the flame the turn-offbutton is pressed, when a second magnet(not shown in cut) lifts the armatureand
. Induction coils : how to make, use, and repair them including Ruhmkorff, Tesla, and medical coils, Roentgen radiography, wireless telegraphy, and practical information on primary and secondary battery . raising the armature has also twistedor partially revolved it, so as to bring thenotch d in the armature over the end of thehook e, as shown in dotted lines. Whenthe circuit is broken by lifting the fingerfrom the button the notch falls into thehook and the valve is locked open. To extinguish the flame the turn-offbutton is pressed, when a second magnet(not shown in cut) lifts the armatureand twists it in the opposite direction, sothat when the circuit is broken the armaturefalls free to its normal position, closing thevalve. In wiring up an automatic burner it isnecessary to run two wires to it, one fromthe white button and another from blackbutton on push plate S. Reference to Fig. 58will make this clear. Most burners areprovided with two binding posts inside thebrass case, and the wires are run througha rubber-bushed hole in the base. If thepush has already been set in position andwired up, as per Fig. 58, have the buttons 74 Gas Lighting. pressed alternately, when on touching the. Fig. posts on automatic with the wires,the lighting or extinguishing connection is Gas Lighting. 175 easily selected. The lighting armature inmost automatic burners buzzes violently,while the extinguishing one only strikes onceon contact being made. Fig. 58 shows howto connect up two pushes to one automatic,one push, perhaps, being located downstairsand the other upstairs in the case of ahall lamp. In setting up these burners caremust be taken not to bend contacts oralter adjustment, and absolute precautionis necessary that no crosses or weakly insu-lated places are in circuit. After burningfor some time it often happens that theburner refuses to light, only buzzing feeblyor not at all. If feebly, the trouble is inbattery, which should consist of, at least,four or six cells
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