. Electric railway journal . s at both ends. Asmentioned in an article on the operation of this propertyin the Electric Railway Journal for Aug. 24, 1912, ap-proximately all the interchange traffic between the steamrailroads entering Waterloo is handled by the electricbelt line, which practically surrounds the city. OVERHEAD LINE CONSTRUCTION DETAILS A single line of 40-ft. 7-in. cedar poles supports thecatenary trolley, telephone, telegraph and transmissionlines. These poles are spaced at 150-ft. intervals on alltrack up to a i-deg. curve, at 120-ft. intervals between ai-deg. and 2-deg. curve
. Electric railway journal . s at both ends. Asmentioned in an article on the operation of this propertyin the Electric Railway Journal for Aug. 24, 1912, ap-proximately all the interchange traffic between the steamrailroads entering Waterloo is handled by the electricbelt line, which practically surrounds the city. OVERHEAD LINE CONSTRUCTION DETAILS A single line of 40-ft. 7-in. cedar poles supports thecatenary trolley, telephone, telegraph and transmissionlines. These poles are spaced at 150-ft. intervals on alltrack up to a i-deg. curve, at 120-ft. intervals between ai-deg. and 2-deg. curve and at 100-ft. intervals for all curves of shorter radius. The catenary line material is ofthe Ohio Brass Companys open-loop hanger design withextruded metal clinch ears. These catenary hangers arearranged for five-point suspension and support a No. 0000grooved trolley from a 7/16-in. galvanized strand messen-ger. The catenary trolley construction is carried on a , provided with a special end casting for pull-. Electric Ry Journal Waterloo, Cedar Falls & Northern—Catenary Feeder andSteady Strain Construction overs on curves. The use of this special-end casting per-mitted the purchase of a standard mast-arm for the entireroad. As shown in the illustrations, the end casting maybe applied to the mast-arm for either a left-hand or right-hand curve pull-over. On all curves up to 1 deg., wherethe pole spacing is at 150-ft. intervals, pull-overs are in-stalled only at each mast-arm. As the curvature increasesup to the maximum of 6 deg., the number of pull-overs isincreased to make the trolley alignment conform as nearlyas possible to the track curvature. Strain guys or catenaryanchors are installed at each end of every curve. These 6 z S Oak Cruse
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