. Electric railway journal . Fig. 2—Top View of Tower Wagon Chassis flexible chain drive. Easy running roller-bearing chainsdrive the rear wheels from the countershaft. The largediameters and properly designed teeth, combined with thefrictionless roller chain, decrease the transmission losses toa minimum. A single broad silent chain of the tooth-linktype drives the countershaft from the motor pinion. Asimple and rigid adjustment keeps the chain in its mostefficient operating condition. The artillery type wheels have roller-bearing hubs, giv-ing maximum strength and minimum friction. Solid rubb
. Electric railway journal . Fig. 2—Top View of Tower Wagon Chassis flexible chain drive. Easy running roller-bearing chainsdrive the rear wheels from the countershaft. The largediameters and properly designed teeth, combined with thefrictionless roller chain, decrease the transmission losses toa minimum. A single broad silent chain of the tooth-linktype drives the countershaft from the motor pinion. Asimple and rigid adjustment keeps the chain in its mostefficient operating condition. The artillery type wheels have roller-bearing hubs, giv-ing maximum strength and minimum friction. Solid rubbertires of highest standard quality are used on all carry the load easily and transmit tractive effort effi-ciently, the tires vary in design for different the trucks of 4000 lb. capacity and upward, broad singletires are used in front and solid double or twin tires on therear wheels. The half-elliptic springs, both front and rear,. Fig. 3—Rear View of a 2-Ton Chassis, Showing Motorand Drive are scientifically designed for the load liable to be imposedupon them according to standard capacity rating. The in-ternal expansion leather-faced brakes on both rear wheelsare controlled by a foot lever at the base of the steeringpost. The steering gear is wheel-operated through a ver-tical steering column to the gear and sector. The emergency wagon has a speed of 12 , and arange of service of 40 miles on one charge of battery. The November 20, 1909.] ELECTRIC RAILWAY JOURNAL. wagon has sufficient space for seven men in addition to thedriver, besides room for tools and repair materials. Of course, one of the important advantages of this typeof emergency wagon is its immediate readiness for service,and it dispenses with the trouble of maintaining a team ofhorses for such purposes. Naturally, a broader adoptionof electric vehicles by street railway companies will permitthe entire discontinuance of horse service. It sh
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