. The Street railway journal . FIG. 4.—DUPLEX JAM CYLINDER. switch supplying current to the compressor. As the pressureincreases the diaphragm is forced outward until the magnetcontact is closed. This energizes the magnet, lifting the arma-ture quickly and opening the main switch, shutting off the truck. The hand brake lever is attached to the top of the jamcylinder casting, and is entirely independent of the air brakerods. This arrangement makes practically three independentbrakes—two air brakes and one hand brake. March 5, 1904.] 4 STREET RAILWAY JOURNAL. 38i PNEUMATIC STATION INDICATOR FOR
. The Street railway journal . FIG. 4.—DUPLEX JAM CYLINDER. switch supplying current to the compressor. As the pressureincreases the diaphragm is forced outward until the magnetcontact is closed. This energizes the magnet, lifting the arma-ture quickly and opening the main switch, shutting off the truck. The hand brake lever is attached to the top of the jamcylinder casting, and is entirely independent of the air brakerods. This arrangement makes practically three independentbrakes—two air brakes and one hand brake. March 5, 1904.] 4 STREET RAILWAY JOURNAL. 38i PNEUMATIC STATION INDICATOR FOR SUBWAY ANDELEVATED SYSTEMS The accompanying illustrations show a novel and ingenioustype of pneumatic station indicator now being tested on oneof the cars of the Interborough Rapid Transit Company, ofNew York, and invented by Ernest K. Adams, of this city. In the engravings, Fig. 1 is a cross-section of the car with the
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
