. The street railway review . s cab by means ofconical toothed gearing. To facilitate the handling of this devicecompressed air is used, which assists the motorman in starting, andwhicli automatically turns the controller to its zero position if thecurrent has to be switched off. By means of a special gearing thecontroller may also be operated without the aid of compressed air. The Trials. In the trials made in the fall of 1901 speeds as high as 150 in one case as high as 160 km. per hour were obtained. As,however, considerable oscillation and shocks were experienced evenat 140 km. per
. The street railway review . s cab by means ofconical toothed gearing. To facilitate the handling of this devicecompressed air is used, which assists the motorman in starting, andwhicli automatically turns the controller to its zero position if thecurrent has to be switched off. By means of a special gearing thecontroller may also be operated without the aid of compressed air. The Trials. In the trials made in the fall of 1901 speeds as high as 150 in one case as high as 160 km. per hour were obtained. As,however, considerable oscillation and shocks were experienced evenat 140 km. per hour no further increase of speed was deemedadvisable at that time, and the remainder of the year was used intaking measurements and making records of the consumption ofelectrical energy. The acceleration at starting varied order to obtain speeds of 100 km. starting distances of 2,000 to3,200 m. with starting times ranging between 138 and 220 secondswere necessary, these figures cunesponding to acceUrations as. MOTORMAN S CAB—A. E. G. CAR. high as .13 to .2 m. per second. This by no means represents anupper limit as the power required for this acceleration was onlyfrom 700 to 1,000 h. p., whereas the motors are capable of supplyingabout 3,000 h. p. for short intervals. In regard to the braking of thecars, both cars may be stopped either by means of Westinghousebrakes or by using reversed current. In addition to this the AllgemeincElektricitaets Gesellschaft car is fitted with an electric brake. TheWestinghouse and electric brakes may be operated from each motor-mans cab simultaneously, though the brake equipments are inde-pendent for each of the trucks. With an air pressure of six atmos-pheres in the braking cylinders, two of which are placed on eachtruck, the pressure on each of the 24 brake shoes, which arearranged on both sides of the wheels is about 6,000 kg., the brakeshoes thus receiving a total pressure of 144,000 kg., or 156 per centof the weight of th
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
