. Electric railways; a treatise on the modern development of electric traction, including practical instruction in the latest approved methods of electric equipment and operation . ^^\\y!;^\;i^^^^^ Fig. 81. Chicago Rail A great many schemes have been devised to insiue good con-tact between the copper bond and the rail, as the terminal is theweak point in anv bond. One of the earliest and most efficient bonds was made by the use of channel pins, Fig. SO. This bond consisted of a piece of copper wire having its ends placed in the holes in the rail ends. Alongside this wire, a cha
. Electric railways; a treatise on the modern development of electric traction, including practical instruction in the latest approved methods of electric equipment and operation . ^^\\y!;^\;i^^^^^ Fig. 81. Chicago Rail A great many schemes have been devised to insiue good con-tact between the copper bond and the rail, as the terminal is theweak point in anv bond. One of the earliest and most efficient bonds was made by the use of channel pins, Fig. SO. This bond consisted of a piece of copper wire having its ends placed in the holes in the rail ends. Alongside this wire, a channel pin was driven in. The objection to the channel pin was the small area of contact between the copper l)ond and rail. Next after the channel pin came the Chicago type of bond, Fig. ,S1, which is a jMece of heavy copper wire with thimbles forged on the ends. These tliimbles were placed in accurately fitted holes
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Keywords: ., bookauthoramericanschoolchicago, bookcentury1900, bookdecade1900
