. Electric railway journal . Fig. 1—Overhead construction on Midland Railway electrifica-tion. Wood-pole and channel-iron strut in foreground ; structuralsteel bridge in background. Fig. 2—Overhead construction on Midland electrification; woodpoles with double channel-iron truss. Fig. 3-^*Experimental crane type of overhead bridge on NewHaven electrification. Fig. 4—Light bridge type of overhead construction used byGeneral Electric Company of Germany. Fig. 5—Bridge type of support on Pennsylvania electrification. OVERHEAD BRIDGE SUPPORTS ARRANGED TO BALANCE INWARD PULLS ON TWO FRAMES small sec
. Electric railway journal . Fig. 1—Overhead construction on Midland Railway electrifica-tion. Wood-pole and channel-iron strut in foreground ; structuralsteel bridge in background. Fig. 2—Overhead construction on Midland electrification; woodpoles with double channel-iron truss. Fig. 3-^*Experimental crane type of overhead bridge on NewHaven electrification. Fig. 4—Light bridge type of overhead construction used byGeneral Electric Company of Germany. Fig. 5—Bridge type of support on Pennsylvania electrification. OVERHEAD BRIDGE SUPPORTS ARRANGED TO BALANCE INWARD PULLS ON TWO FRAMES small section at the bottom to a considerably larger oneat the truss, and then in an extension carrying thecrossarms, to a small top. The truss has parallel chordsand single diagonals, but the curse of the squarecorners at the connection to the post is removed by acurved bracket which, with the tapered post, givesa decided arch effect. This effect is very pleasing andat the same time, as in the Archbold-Brady type, theresulti
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
