File:The Street railway journal (1898) (14575239077).jpg

Identifier: streetrailwayjo141898newy (find matches)
Title: The Street railway journal
Year: 1884 (1880s)
Authors:
Subjects: Street-railroads Electric railroads Transportation
Publisher: New York : McGraw Pub. Co.
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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ve been given a thorough test. This indicates that the skepti-cism, which was at one time more general, on the value of airbrakes, is gradually disappearing. Various modifications and improvements have been made bythe Christensen Company in the details of its air brake equipmentduring the past year. These have been notably in the introductionof a double spiral gear and pinion to form the drive between themotor and compressor, and in a small change in the air pumpvalves, which, with the gearing mentioned above, produces apractically noiseless machine. A change has also been made inthe method of lubrication and in the arrangement of piston pack-ings and cylinders, which have increased the efficiency of thecompressors fully 15 per cent. Fig. 1 shows the type of compressor used at present. As willbe seen, it is all boxed in to protect it from dirt and moisture, andis bolted to the lower part of the car body. For the No. 1 com-pressor this box is about 21 ins. cube, and with the motor com-
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FIG. 5.—CAR IN TAUNTON EQUIPPED WITH AIR BRAKES this apparatus, by which its efficiency and reliability have been in-creased. As now built, it consists of practically only two movingparts, and it is fitted with carbon breaks and powerful air blastsfor extinguishing the arc. September, 1898.) STREET RAILWAY JOURNAL. 573 Fig. 3 shows the arrangement and connection of the apparatusfor a motor car with compressor arranged beneath the car floor.Fig. 4 shows a notable installation made by the company duringthe past year in Brooklyn, in a train on the Brooklyn ElevatedRailroad, on which the independent motor compressor apparatuswas used. The motor ear complete without passengers weighsover thirty tons. Another example of a high speed railway forheavy traffic equipped by the Christensen air brakes is the NewCanaan Division of the New York, New Haven & Hartford Rail-road, all of the cars of which are employing independent motorcompressor apparatus. A description of this system is given b

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