. Locomotive engineering : a practical journal of railway motive power and rolling stock . number ofcars per train than another, when there isa probability that the road showing thesmaller train haul was moving the sametonnage. Following this matter still further, theaverage tonnage for a loaded car for theyear on five roads shows: tons, , tons, tons, tons. With such a variation in the manner ofallowing mileage and rating trains, nosatisfactory comparison can be made; anduntil all roads show the cost of moving aloaded passenger and freight car one mile,locomotive
. Locomotive engineering : a practical journal of railway motive power and rolling stock . number ofcars per train than another, when there isa probability that the road showing thesmaller train haul was moving the sametonnage. Following this matter still further, theaverage tonnage for a loaded car for theyear on five roads shows: tons, , tons, tons, tons. With such a variation in the manner ofallowing mileage and rating trains, nosatisfactory comparison can be made; anduntil all roads show the cost of moving aloaded passenger and freight car one mile,locomotive performance sheets will be oflittle value for comparison. i i g Pneumatic Sand Sifter. The meagre mechanism of the foundryhas lately received the important additionof the machine illustrated in the annexedengraving. It is a sand-sifting machine,operated by compressed air. It consistsof a heavy oak frame, containing a swing-ing riddle or sieve, that can be removedby simply lifting it out of the frame whennecessary to use a sieve of different motive power is a substantial bal-. anced rotary motor, which drives thegear connected to the three-pointedknocker attached to the sieve. Foun-dries which are using these machinesstate that they not only cover their costin a short while by saving in labor, butthat the tempering of the sand can bedone much better than by hand. Thoseinterested in such a machine are requestedto correspond with C. H. Haeseler &Co., Philadelphia, Pa. i i i Operating Tools by Electricity. We find that nearly all the men incharge of railroad shops are becomingalive to the advantage of employing elec-tric motors for driving certain parts oftheir machinery. We have lately heardmore than one shop manager say that ifhe had to equip a new shop he wouldput no line shafting in it. This indicatesa highly progressive spirit; but the desirefor doing away with line shafting maylead to expensive mistakes if it is notobeyed judiciously. Those looking to-wards the intr
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroa, bookyear1892
