r respectively by means of ma-chine screws. The top is covered with a brass dia-phragm 0.002 in. thick, pressed over the sides andcemented, to the sides only, with asphaltic cement. Thebrass top is protected by a covering of cheese cloth ce-mented to the top and sides with a blown oil asphalt.A… … block E is of steel and is insulated from C, on whichit is supported by a layer of Bakelite cement No. 5.From the block E extends a No. 16 copper wire withtriple braid weather-proof insulation, through a Vs-in.galvanized iron pipe. Evidently when Block E is in me-tallic contact with disk B an…
Automobiles · Aeronautics
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