. The street railway review . any kind of con-veyance with storage batteries, for the operators can tellat any time the energy in the batteries and the proper timefor re-charging can be ascertained with accuracy. Theseinstruments are made for any size to order; the standardsize reads for a current of 50 amperes. Although it is certain that the application of storage bat-teries to street cars and vehicles will not meet with failure asin the past, yet they still remain bulky and heavy for suchwork. Their great field of usefulness now seems to be in thepower station as an auxiliary to the generat
. The street railway review . any kind of con-veyance with storage batteries, for the operators can tellat any time the energy in the batteries and the proper timefor re-charging can be ascertained with accuracy. Theseinstruments are made for any size to order; the standardsize reads for a current of 50 amperes. Although it is certain that the application of storage bat-teries to street cars and vehicles will not meet with failure asin the past, yet they still remain bulky and heavy for suchwork. Their great field of usefulness now seems to be in thepower station as an auxiliary to the generating machinery,and this phase of the question will be discussed in a succeed-ing number. C. A. Gray has patented an air brake for street cars whichis shown in the accompanying sketch, together with ar-rangement of the compressor which is driven by an eccentricfrom the axle. The brake cylinder and valve chest areshown in section and their operation will be readily under-stood. When in the position shown, air from the reservoir. GKAV AIR BKAK?;. is admitted to both ends of the brake cylinder; to apply thebrakes the valve (which is connected to levers at both endsof the car) is thrown to the right and opens the left hand endof the brake cylinder to the atmosphere, when the unbal-anced pressure in the other end throws the piston. The re-lease is efifected by throwing the valve over and exhaustingthe other end of the brake cylinder. Of course the applica-tion is gradual or sudden according to tlie quantity of airthat is permitted to escape. NEW MEMBERS OF THE ACCOUNTANTSASSOCIATION. W. B. Brockway, secretary of the Street Railway Ac-countants Association of America, advises us that since thelist of new members was published in the Review for Feb-ruary the following companies have joined the Association: The Market Street Railway Company, San Francisco. The Oakland Transit Company, Oakland, Cal. The Compania Ferrocarriles, Mexico, Mex. The Haverhill & Amesbury Street Railway Company,H
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
