RG7DJX
. Bulletin - United States National Museum. Science. PRIMARY SPARK COILS. FOR ELECTRIC c; s UOHTIKO, Cat. No. 48304. 8 inch Price, each, " 50304. 10 " 52304. 12 " 54304. Detached Gas Lighting Relays For Spark Coils with Relay Attachment, add $2 50 to price f"r Spark ( toll. Figure 23.—Type of spark coil the Duryeas are believed to have used in their electrical circuit, as shown in a catalog illustration. (Smithsonian photo 46858 V *H 20 8 TO 4 SO mission, explaining the plan to Charles: "The three 1 on secondary shaft have friction clutches, the two bevel gears on sam
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