Fig. 153. Quenched Gap.
Fig. 154. Quenched Gap.
Fig. 154 shows an efficient form of quenched gap for use in stations up to 1 K.W. in power.
The disks are shown in detail in Fig. 155. They are cast out of copper and then turned perfectly true and smooth in a lathe. After surfacing, the discharge surface should be heavily silver plated and buffed smooth.
Fig. 155. Details of Disk and Ring.
The disks are piled on a marble base with a mica ring between each. They are clamped down by a strong set screw mounted on a heavy brass yoke. Enough pressure should be brought to bear to force the plates tightly together and make them air tight.
