. The street railway review . s upon it before her shrieks awoke him. |^tt«l ^J^^iU*^ §^^^w«l- 317 COMPRESSED AIR TRACTION. IT may ho iiuliructly interesting to the readers of theRi;\ iiiu, in retrospect of the Leavenworth article ofhist month, to see a representation of a compressed airlocomotive that is reported to have been successfully usedfor several months in tlie interior of the old Eagle Mines,near Pittsburg. These locomotives were built by II. K. Iorler & Co.,of Pittsburg, for the express use above mentioned. CJenerally the construc-tion is the same as a steamlocomotive wilii the omis
. The street railway review . s upon it before her shrieks awoke him. |^tt«l ^J^^iU*^ §^^^w«l- 317 COMPRESSED AIR TRACTION. IT may ho iiuliructly interesting to the readers of theRi;\ iiiu, in retrospect of the Leavenworth article ofhist month, to see a representation of a compressed airlocomotive that is reported to have been successfully usedfor several months in tlie interior of the old Eagle Mines,near Pittsburg. These locomotives were built by II. K. Iorler & Co.,of Pittsburg, for the express use above mentioned. CJenerally the construc-tion is the same as a steamlocomotive wilii the omis-sion of the boiler and watertank, these being replacedliy two large cylindricaltanks holding the com-pressed air. These tanksare 36 inches in diameter and 16 feet long. The con-nection of the air reser\oir with the cylinders is simpleand no ditliculty is experienced from freezing either insummer or winter. The locomotive carries air at 500 to600 pounds pressure but ordinarily the pressure variesfrom 250 to 450 COMPRESSEU AIR having 141 pounds pressure left at the end of each trip. The air is compressed by a Norwalk compressor (madeby the Norwalk Iron Works, of South Norwalk, Conn.,)and situated for convenience, 2,400 feet from the chargingpoint of the engines. No loss of pressure is noticeable,allhougii the air is conveyed through 3-inch pipes. Thetime for charging is one minute. If charged to 500 pounds, the engine can make a dis-tance of I y^ miles, doing heavy work, and it is practicableto make a running capacity of 4 miles with one charge. The compressed air locomotive is peculiarlylitted for this work, inas-much as the narrow quar-ters, short curves, presenceof tire-damp, water seep-age and ventilation requireLOCOMOTIVE. a motor fulfilling most difficult conditions. The air locomotives are built in\arious sizes of cylinders from 5 to 10 inches in smaller sizes will run on 16-pound rail in ■ 4-footentries. The larger sizes require 20 to 30-pound
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
