. The Street railway journal . important feature of this machine is that the broomcan be thrown in and out of action while in motion. April, 1894.] JV THE STREET RAILWAY JOURNAL. 255 Wrought Iron Wheel Centers. The use of forged, wrought iron center, steel tired wheels in streetrailway practice is comparatively unknown in this country, the one-piece, cast iron, chilled wheel being the standard. European tram-way practice is different, however, in this respect, the forged center,steel tired wheel being used almost entirely. The possibilities of build-ing up a market for the forged center wheel
. The Street railway journal . important feature of this machine is that the broomcan be thrown in and out of action while in motion. April, 1894.] JV THE STREET RAILWAY JOURNAL. 255 Wrought Iron Wheel Centers. The use of forged, wrought iron center, steel tired wheels in streetrailway practice is comparatively unknown in this country, the one-piece, cast iron, chilled wheel being the standard. European tram-way practice is different, however, in this respect, the forged center,steel tired wheel being used almost entirely. The possibilities of build-ing up a market for the forged center wheel was brought to the atten-tion of M. Pierre Arbel, of the Arbel Establishments, Rive-de-Gier(Loire), France, while at the Columbian Exposition. Believing thewheel manufactured by that company to have a future in the Americanstreet railway world, it has been decided to establish an Americanoffice for the sale of the wrought iron, forged wheel centers manufact-ured under the Arbel process. This, as already mentioned in this pub-. FIGS. 1 AND 2.—SECTIONS OF SPOKES AND HUBS. lication, is in the Havemeyer Building, New York, and is in charge ofWm. Hazleton 3d. In the great developement which has taken place in the manufact-ure of all varieties of street railway equipment, the wheels have notbeen appreciably altered except by increasing the weight from the oldstyle used on the first horse cars, although with the large and heavycars and the equipments used now on many street railway lines thewheel load is considerably heavier than that allowed in steam railwayservice. It is a well known fact, also, that cable and electric tractionis much more severe on wheels than steam road service, the formerhaving to operate on the surface where the rails are often covered witha coating of mud or dirt. Besides this, the wheels are subjected tomuch more frequent and severe brake action than on steam roads must also follow the lines of streets, necessitating manysharp curves and heavy
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