. The Street railway journal . er. Into these holes are forced by hy-draulic pressure, coils of corrugated lead tape, which aremachine made from the purest lead. This plate is formedelectro-chemically, and the great surface of the corrugatedcoils receives a Plante formation, while the autimoniouslead grid is unattacked by the process. For the initialformation, only from 3 per cent to 5 per cent of the leadribbon is formed into a peroxide; the balance of it is avail-able for further formations in the regular working of thebattery, so that the life of the plate is very long. Thiscan be understoo
. The Street railway journal . er. Into these holes are forced by hy-draulic pressure, coils of corrugated lead tape, which aremachine made from the purest lead. This plate is formedelectro-chemically, and the great surface of the corrugatedcoils receives a Plante formation, while the autimoniouslead grid is unattacked by the process. For the initialformation, only from 3 per cent to 5 per cent of the leadribbon is formed into a peroxide; the balance of it is avail-able for further formations in the regular working of thebattery, so that the life of the plate is very long. Thiscan be understood from the fact that this initial formation 2 STREET RAILWAY JOURNAL. [ XIV. No. i. is held in the plate very much more firmly and securely,and with far less danger of falling out than was the activematerial in any of the old pasted forms of plates, which,after they had lost their active material, or a portion of it,also lost their capacity, while in the present form ofpositive the ribbon contains sufficient material that. iug, with zero point in the center of the dial. It gives theflow of current in each direction, and during most of theday the indicator oscillates from one side of the scale tothe other with the variation in load on the external circuit. The second storage battery station, which is at thecorner of Thirty-fourth Street and Penn Avenue, alsooccupies an old cable power station, which, however, doesnot contain any generating apparatus. The cells are alsoplaced in the old tension room, and are connected to a I Station Ben-Venue Power Station
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
