. Giornale ferroviario elettrico . gli ingegneri assicurativi hanno riconosciuto che il funzionamento delle case carovane sarebbe stato ostacolato se ogni corsia fosse disattrezzata. La costruzione di queste quattro case è come 9 settembre 1911.] GIORNALE FERROVIARIO ELETTRICO. 421 concedere alle imprese ferroviarie il beneficio di una sostanziale riduzione dei premi assicurativi. Due box ruota, 8 piedi x 11 piedi 6 poll., sono forniti a Brock-ton per la comoda rimozione delle ruote. Si tratta di gru a braccio servoazionate con raggio di 12 piedi, montacarichi ad aria e martinetti telescopici idraulici hy da 15 tonnellate. I jack sono portatili e una durata delle lampade del m

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. Electric railway journal . the insurance engineers recognized that the operation ofthe carhouses would be hampered if every aisle wereequipped. The construction of these four houses is such as September 9, 1911.] ELECTRIC RAILWAY JOURNAL. 421 to give the railway companies the benefit of a substantialreduction in insurance premiums. Two wheel pits, 8 ft. x 11 ft. 6 in., are provided at Brock-ton for the convenient removal of wheels. These are servedby jib cranes of 12-ft. radius, air pit lifts and 15-ton hy-draulic telescoping jacks. The jacks are portable and a car life of the lamps in the machine-shop section was shortenedby their proximity to an overhead belt carrying a consid-erable static charge which tended to bring the filaments intocontact with the glass bulbs. The difficulty was overcomeby the expedient of installing a miniature lightning rod orground wire with a pointed end near the belt and connecting 3 X i/2 61- IT = ?4 Bolt-iife H1 i J ^ 1 1 ii 59^ x?4 Plate , f : l!1 iii r 12 * 1 ! r- 1 1 l~[ J. Side Elevation. Cross Section. Brockton Carhouse—Details of Wheel Changing Pits FJcctricJlij. Journal body can be lifted to the full length in any part of the housewithout the aid of blocking. All the wiring in the building is installed in conduit withCondulet outlets. The lighting and power service is sup-plied from the trolley circuit and is controlled from a switch-board installed inside of the house near the front entrance.The switchboard consists of a slate panel bordered by awooden frame of neat design, the panel carrying forty-twosnap switches and inclosed fuses, a main single-pole knifeswitch and fuse and a motor switch and fuse. Each circuitswitch is labeled. The electric lighting was designed to givea liberal degree of illumination without waste of current andlamps. The lights in each half of each pit are controlledon either side by a switch at the end of the pit. Theswitches and pit lights are installed in concrete pockets inthe sides of the pi

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