. The Street railway journal . tion boxescontaining connectors mounted on slate bases. The entireunder sides of the floors of the motor coaches are sheetedover with y2-in. uralite, while the upper surface is providedwith a 24-in layer of Paris cement, such as is used for flooringsurface in steel car construction. The surfaces of the floorsof the trailer coaches are similarly treated, and that portionof the under side directly above the steel tubes containing thetrain line wires is also protected by uralite sheeting. In each motor coach there are four third-class compart- 520 STREET RAILWAY JOU
. The Street railway journal . tion boxescontaining connectors mounted on slate bases. The entireunder sides of the floors of the motor coaches are sheetedover with y2-in. uralite, while the upper surface is providedwith a 24-in layer of Paris cement, such as is used for flooringsurface in steel car construction. The surfaces of the floorsof the trailer coaches are similarly treated, and that portionof the under side directly above the steel tubes containing thetrain line wires is also protected by uralite sheeting. In each motor coach there are four third-class compart- 520 STREET RAILWAY JOURNAL. [Vol. XXVIII. No. 14. ments providing seating accommodation for forty passengers,and there is also a luggage compartment. The two trailercoaches attached immediately to the motor coaches eachcontain seven third-class compartments with seating capacityfor seventy passengers. The middle trailer coach containssix first-class compartments with seating accommodation forsixty persons. The two trailer coaches, on either side of. STANDARD SEVEN-CAR TRAIN the middle coach, each contains three first-class and threethird-class compartments with seats for 60 persons. Thefirst of these two trains went into service on July 11, and hasbeen making an average of about 200 miles daily. ^» NOTES ON THE WATER TANK LIGHTNING ARRESTERSFOR STREET RAILWAY CIRCUITS* BY A. M. BALLOU,Chief Electrician, Denver City Tramway Company On account of the large amount of damage during elec-trical storms to the railway motors operated by the DenverCity Tramway, the company concluded in the spring of 1904to try the water-tank lightning arresters on the cars. Anumber of experiments were then conducted to determinethe size of box, the amount of water and the current size of tank was finally determined on, which was 18 , 13 ins. long and 6 ins. wide. This held about 5 gallonsof water without splashing from the tank, and it was foundthat a carbon plate of 11-32 in. x ifs ins. by 8 ins. long ha
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
