. Electric railway review . AL HOSE BRIDGE—PHI LADELPH IA RAPIDTRANSIT COMPANY. Through the courtesy of the Philadelphia Rapid TransitCompany we present the accompanying illustrations and de-scription of a sectional hose bridge that includes features for four more lines of smaller hose. Probably the most valu-able feature of this bridge is the facility with which a lineof hose can be changed by lifting out the top part of thecenter section of the bridge rails. The Philadelphia Rapid Transit Company has sevenemergency wagon houses and the wagons at each house areprovided with these bridges. Eac
. Electric railway review . AL HOSE BRIDGE—PHI LADELPH IA RAPIDTRANSIT COMPANY. Through the courtesy of the Philadelphia Rapid TransitCompany we present the accompanying illustrations and de-scription of a sectional hose bridge that includes features for four more lines of smaller hose. Probably the most valu-able feature of this bridge is the facility with which a lineof hose can be changed by lifting out the top part of thecenter section of the bridge rails. The Philadelphia Rapid Transit Company has sevenemergency wagon houses and the wagons at each house areprovided with these bridges. Each quarter of a bridgehas all its parts painted a color differing distinctly fromeach of the other three quarters, so. that when a bridge isbeing put together on the street no time is lost in pickingout the various mating parts. For carrying these bridgesslings are provided which can be hooked under the body ofthe trolley wagon when it is desired to take a bridge fromthe emergency house to the scene of a fire. The approxi-. Philadelphia Rapid Transit Hose Bridge—Details of Construction. of interesting design. Reference to the line engraving willshow that the bridge has a total length of 22 feet 7 incheswith a rise at the center of eight inches. The resultingincline is so slight that a car can easily pass over the bridge,even though the condition of the rails may be exceptionallybad. Structurally, the bridge comprises a cast sectional framewith two incline points for each rail, and a center top rail mate weights of the various parts are as follows: Manganesesteel points, 150 pounds each; malleable iron centers, 150pounds each; center sections of rail head, 75 pounds each. An accompanying illustration shows one of these bridgesin actual service during a fire in the business district ofPhiladelphia. The time required for loading one of thesebridges on a trolley wagon, getting out of the emergencyhouse, unloading the bridge and setting it up ready for the
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectstreetr, bookyear1906
