. Electric railway journal . ntactor panel with necessary interlocks, and a sec-ondary control composed of the brush-shifting pilotmotor, gear train and drum control switches, arrangedfor pressure regulator control through the rope wheelor for push button control. From actual test data in comparison with a standardslip-ring motor of the same size under theactual fan load and for the same range of speed thismotor shows a very much higher efficiency and powerfactor. New Splice Bar for Girder Rail THE accompany-ing illustrationshows the Heinle railjoint which is nowbeing
. Electric railway journal . ntactor panel with necessary interlocks, and a sec-ondary control composed of the brush-shifting pilotmotor, gear train and drum control switches, arrangedfor pressure regulator control through the rope wheelor for push button control. From actual test data in comparison with a standardslip-ring motor of the same size under theactual fan load and for the same range of speed thismotor shows a very much higher efficiency and powerfactor. New Splice Bar for Girder Rail THE accompany-ing illustrationshows the Heinle railjoint which is nowbeing this type ofjoint the bolts areplaced at an anglewith the intentionof taking care of theprincipal stressesmore of the econo-mies claimed for thistype of splice bar arethat it can easily berolled and punched,weighs less per pair,gives greater effi-ciency and elimi-nates structuralfracture due to bending stresses. The bolt arrange-ment can be supplied to various types of rail jointsand other fabricated Truss Fastening for Girder Rail New English Trolley Stand ANEW trolley stand has been brought out in Eng-land which is fitted with roller and ball bearingsand among other advantages it is claimed it is superiorin strength and has extremely lightweight, few wearingparts, is easily adjustable and has an absence of fric-tion. It is further claimed that damage due to reboundis reduced to a minimum. A considerable number ofthese have been in service for some time and haveproved successful, having cost practically nothing formaintenance. This is due to the introduction of aroller bearing around the center pivot, which not onlyreduces friction to a minimum but renders the standardpractically perfect for either straight, under running 734 Vol. 58, No. 17 or side running, the dewiring of trolley heads beingalmost eliminated. The relation of the pivot end of thepole sockets to the axis of the pivot end—to which thespring ends are connected—is so arranged that al
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
