. American engineer and railroad journal . Types Nr. I II Ill IV V VI VII VIII IX \Vtight of rail per yard 11). Number of axles per lo- 194 912 2305,4 22,8 9 SO1000175 18 24 44 12,511) 3106,52,43,311 05 5000 173 20 30 45,6 1822 4208,62,68,612,3 80 OtiOO 175 22 36 44 47 4 4 46 8 10 19 26 8224,5 32 40 450 720 860 9,7 11,8 15,5 3 3,3 8,5 3,7 4,5 5 2 13 15 17 130 IGO 200 7800 lOIUO 13*1) 175 175 175 241 29 33 50 4« 2836 840 16,2 4 4,616,5 200 IIOOO 175 27 74 44,3 60 1140 18,3 4 5,6 18,3 800 15I(W 200 34 740 Lo!i(i per axle on rails, t Wiiglit of engine, emp-ty .. tons Weight of engine, full, t Tot
. American engineer and railroad journal . Types Nr. I II Ill IV V VI VII VIII IX \Vtight of rail per yard 11). Number of axles per lo- 194 912 2305,4 22,8 9 SO1000175 18 24 44 12,511) 3106,52,43,311 05 5000 173 20 30 45,6 1822 4208,62,68,612,3 80 OtiOO 175 22 36 44 47 4 4 46 8 10 19 26 8224,5 32 40 450 720 860 9,7 11,8 15,5 3 3,3 8,5 3,7 4,5 5 2 13 15 17 130 IGO 200 7800 lOIUO 13*1) 175 175 175 241 29 33 50 4« 2836 840 16,2 4 4,616,5 200 IIOOO 175 27 74 44,3 60 1140 18,3 4 5,6 18,3 800 15I(W 200 34 740 Lo!i(i per axle on rails, t Wiiglit of engine, emp-ty .. tons Weight of engine, full, t Total heating surface,sq. ft. Grate area sq. ft. Diameter of wheels,.ft. Kigid wheel base ft. Total wheel base .. ft. RadiuH of smallestcurves ft. Tractive force lb. Boiler pressure lb. Length of engine withbuffers ft. 14 07 Ki 1070 23,7 4 8,8 26,6 400 20000 175 45 The above types of duplex compound locomotives Iniveproved very successful in each case, and as a consequence therailroad companies using these engines have repeated MALLET DUPLEX COMPOUND LOCOMOTIVE. tioiis of the high-pressure pistons by admitting live boiler steamto the receiver, iind this can be done automatically by connect-ing the auxiliary steam cock with tlie reversing gear. The duplex locomotives are fitted witli liand brakes in com-bination with the Wcstiiighouse, or any other system of con-tinuous brake acting upon liotli engine groups. As a rule locomotives arc l)uilt its tank engines, withtotal adliesion, the coal bunker being at the rear ; liut wlieregreat provisions of water and coals have to be carried, ii tender may l)e added. Mallets duplex compound locomotives were first introducedand tried ujion narrow-gauge lines, and after a prolonged ser-vice this type of engines proved to be exceedingly well adaptedto solve the prolilem imposed on such motors—viz., To pro-pel economically, on a rail of given weight, the greatestpossible loads over heavy gradients combined witi
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
