. The Street railway journal . -perature of 450 degs. F. The resistance consists of 1440 ft. of com-mon wrought iron, 1-16 in. x 1I4 ins., mounted by winding in tensections, each section 4 ft. long, 35 lengths per section. The sectionswere mounted on J/S-in. round iron rods, held in a framework, madeof zVi-m. L iron. For insulation we used special micanite bottom set of rods are held by six helical steel springs to takeup the expansion of the iron resistances. The side bars, motorsupports and brake rods of the truck are cut and joined In preparedoak blocks, thus insulating the front
. The Street railway journal . -perature of 450 degs. F. The resistance consists of 1440 ft. of com-mon wrought iron, 1-16 in. x 1I4 ins., mounted by winding in tensections, each section 4 ft. long, 35 lengths per section. The sectionswere mounted on J/S-in. round iron rods, held in a framework, madeof zVi-m. L iron. For insulation we used special micanite bottom set of rods are held by six helical steel springs to takeup the expansion of the iron resistances. The side bars, motorsupports and brake rods of the truck are cut and joined In preparedoak blocks, thus insulating the front and rear wheels from each current is led to the track through either pair of wheels, as thecase demands, by using two S. P. switches. For taking the dropacross the joints we suspend two contacts from each side of thecar, between the wheels. For contact we use a metal-back brushwith spring steel bristles. Contacts are spaced 36 ins. apart. Fromeach set of contacts, leads go to a Whitney double millivolt meter Tro//et/. STAND.\KD AND CONCRETE SUITURTING BEAM,KANSAS CITY, MO. WIRING DIAGRAM OF BOND-TESTING CAR, CINCINNATI cars on the line. It is impossible to give any satisfactory informa-tion regarding the cost, as this would vary so much in differentlocalities that the cost in this city would be no criterion of what itwould be elsewhere. Any engineer knowing the price of materialsand the cost of labor, can make a close estimate of the construction,as shown on the drawing. I would not recommend this type of con-struction where the foundation is not first class. Chas. N. Black, Gen. Mgr.,Metropolitan St. Ry., Kansas City. I 23.—What methods are available for welding joints?Please give your experience with any of the methods for weld-ing track, including detailed cost of doing the work and resultssecured. The only method of welding joints that we have had any ex-perience with in this city has been cast welding. During the pastyear we have welded about 3000 joints,
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
