. American engineer and railroad journal . trength. The interior is provided with 10 lamps There is such alamp on each platform, and lamp of larger capacity in eachlieadlight carried in multiple arc, so that any number may beused, and their current is taken from a special set of batterycells, which are charged, however, in series with the powerbattery. The truck, wliich is herein illustrated, is of interesting con-struction. It is what is known as the Maximum Traction typeand in it an entirely new method of design is followed. Theaxles are of chrome steel I beam sections, each forged with
. American engineer and railroad journal . trength. The interior is provided with 10 lamps There is such alamp on each platform, and lamp of larger capacity in eachlieadlight carried in multiple arc, so that any number may beused, and their current is taken from a special set of batterycells, which are charged, however, in series with the powerbattery. The truck, wliich is herein illustrated, is of interesting con-struction. It is what is known as the Maximum Traction typeand in it an entirely new method of design is followed. Theaxles are of chrome steel I beam sections, each forged with 3J^in. ends inserted into the bearings, wliich arc of the RoUwaytype, and are contained in the hub of the wheel. These bearingseliminate friction to a large extent and are inexpensive to main-tain. The axles do not revolve, each wheel rotating independ-ently of the other, thereby eliminating all wheel slipping; forexample, on a tangent track because of the varying diameter ofall car wheels, and particularly at curves because of the inde-. INTEIilOR OF STORAGE B.\TTERV CAR. pendent action of each wheel. By this, instead of the oldmethod whereby the wheels are rigid with the and the axleis driven, much of the friction loss is eliminated, less power isconsumed, and, incidentally, rail corrugation is overcome. As usual in maximum tractioji trucks, the Beach MaximumTraction truck carries the load principally on the driving orlarge wheels, and each driving wheel is independently driven bya 10 motor, the location of which is shown plainly in theillustration. Four such motors, provided with ball bearingjournals are required for each car. They have ample capacityfor the loads and speed required, have a safe factor for over-loads, and are especially smooth at acceleration Oxy-acetylenewelding has been resorted to throughout the truck, which con-tains no bolts or rivets, fact the somewhat novel applica-tion of this process is in evidence in several quarters in connec-ti
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
