. The Street railway journal . the right to operate over a portion of the tracks ofthe Englewood «& Chicago Street Railway Company, andwill now run its cars to Manhattan Beach, South Chicago,Pullman, Washington Heights and Grand Crossing. TheWashington Heights extension on 103d Street, of theCalumet line, was opened last month. 474 STREET RAILWAY JOURNAL. [Vol. XII. No. 8. Street Railway Rolling Stoek. By W. E. Partridge. VIII.—Panels and Roofs. The panels and roof constitute the covering of the carframe or its enclosures. The panels are supposed to addvery materially to the stiffness an
. The Street railway journal . the right to operate over a portion of the tracks ofthe Englewood «& Chicago Street Railway Company, andwill now run its cars to Manhattan Beach, South Chicago,Pullman, Washington Heights and Grand Crossing. TheWashington Heights extension on 103d Street, of theCalumet line, was opened last month. 474 STREET RAILWAY JOURNAL. [Vol. XII. No. 8. Street Railway Rolling Stoek. By W. E. Partridge. VIII.—Panels and Roofs. The panels and roof constitute the covering of the carframe or its enclosures. The panels are supposed to addvery materially to the stiffness and strength of the roof, or, more correctly the roof boards, are a greataddition to the strength and stiffness of the upper part ofthe frame. It is difficult to understand just what relationsin actual practice the panels have to the strength of the in taking old cars apart the panels are foundin such a condition as to preclude the possibility oftheir having been of any service other than keeping out. FIG. 1. the weather. Again we find old cars in which the panelsare practically a part of the car side. In such cases theymust have been a great addition to the strength as well asthe stiffness of the framework. The panels have to endure not only the wear andtear of the car frame induced by strains and shocks, butare subjected to violence so frequentl} that repairsand replacements are the rule. It is generally admittedthat a spliced panel has small value in stiffening a builders agree that if it were possible to put on allpanels in continuous pieces, great advantages in the wayof durability of the car would follow. As the panel is almostalways of white wood, its size is limited by the merchant-able widths of wide stuff. In different parts of the countrythis ranges from sixteen to twenty feet. Some buildersmake splices in the shortest panels on the score of econ-omy. In tearing down old cars a variety of interesting factsmay be learned in regard to pan
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
