ng engine to move, so that the rudder is to cease to conduct. The relay then breaks the circuit also turned in a certain direction. of the electromagnet, which, consequently, releases its When the interrupter breaks circuit the ether waves armature, a, and the spring, s, then actuates the valve… … coil, etc. The variable peri- which is submerged to a 4 depth of about ten feet. On odic interrupter consists in a drum, O £, over the periphery the upper surface of the pro- jectile, near the stem, is a of which are secured two small recess containing a bob- tubes of conducting and in- bin of fine…
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