. Electric railway journal . Mesa foil Railway—Typicalway Section Road- line cross-arm and the structural angle supporting theground wire above the top of the pole. This groundwire is carried down the side of the pole on knobs and connected to ground by l^ 8 ft. long. The base of this pipe is providedwith a cast-iron shoe for driving, and the top has aspecial grounding cap. In appearance this cap re-. Mesaba Railway—Typical Way Shelter sembles an ordinary hexagon nut, except that it istapped out only on one side to fit over the head ofthe l^-in. ground pipe. A horizontal
. Electric railway journal . Mesa foil Railway—Typicalway Section Road- line cross-arm and the structural angle supporting theground wire above the top of the pole. This groundwire is carried down the side of the pole on knobs and connected to ground by l^ 8 ft. long. The base of this pipe is providedwith a cast-iron shoe for driving, and the top has aspecial grounding cap. In appearance this cap re-. Mesaba Railway—Typical Way Shelter sembles an ordinary hexagon nut, except that it istapped out only on one side to fit over the head ofthe l^-in. ground pipe. A horizontal slot is cut inthe cap 7/16 in. below the top, and a tapered holeslightly off center is drilled from the top of the capthrough this slot. The depth of the slot and the loca-tion of the tapered hole are such as to leave sufficientspace between the inside edge of the slot and the hole
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
