. The Street railway journal . was melted. ways. In the ordinary method of mounting amotor, a large part of its weight is journaleddirectly upon the axles so that the track jointshave to bear not only the weight of the wheelsand axles, but also this extra motor weight,which sometimes amounts to as much as thewheels and axles themselves. In the Walkersuspension, however, the motor proper may beregarded as a closed cylinder, centered and freeto revolve upon its own armature and carried in Jttnk, 1896.] STREET RAILWAY JOURNAL. 49 n iron frnnie, wliich is ioiirnalcclupon the car nxk.
. The Street railway journal . was melted. ways. In the ordinary method of mounting amotor, a large part of its weight is journaleddirectly upon the axles so that the track jointshave to bear not only the weight of the wheelsand axles, but also this extra motor weight,which sometimes amounts to as much as thewheels and axles themselves. In the Walkersuspension, however, the motor proper may beregarded as a closed cylinder, centered and freeto revolve upon its own armature and carried in Jttnk, 1896.] STREET RAILWAY JOURNAL. 49 n iron frnnie, wliich is ioiirnalcclupon the car nxk. I he of the motor iscushioned on the axle and trLicl< by springs,and is (elt by a low joint not suddenly, butgradually, the springs doin.^- away with thathard, lieavy hammer blow which is so de-structive to the track joints. This method ofsuspension, moreover, tends to increase the lileof the gears and pinions to a remarkable extentl^ecause of the double spring touch betweenthe teeth, and Walker motors have rim for. ARMATURE OF THE WALKER 800 K W. RAILWAY GENERATORPARTIALLY WOUND. eighteen months, two hundred miles per daywithout changing gear or pinion. The Walker motor is built with the utmostcare to secure long life and high eftkiency in ser-vice. Its characteristic curves are peculiar, aswill be seen from the accompanying horse power ratings are established l^y onehour s run at a hxed load, this being the onlypractical method of properly determining thepower of a motor; for example, a No. motor[thirty horse power] is loaded at the factory with a Prony brake until the speed and weightindicate that the motor is actually deliveringthirty mechanical horse power at the armaturepinion. It is then allowed to run under this loadfor one hour, at the end of which time the tem- _J_ 1 —h- -4- —i- —i— t2 1 5 sz - h EFFICIENCY DIAGRAM OF THE WALKER 600 K. W. RAILWAYGENERATOR MANUFACTURED BY THE lJ WALKER COMPANY CLEVELAND, OHIO, U. S. A. 1 lOOij Load In A
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
