. The Street railway journal . emarkableshowing which the Spiral Bearing is oil grooves, cast in the bronze lining,carry the oil from the dope hole to the endsof the bearing and back again, thus insuring perfect lubrication and preventing anywaste of oil. The saving in lubricants is an important feature of the Spiral Bearing. The SPIRAL TRUCK BEARING consists of an iron shell, in which askeleton bronze lining, in a spiral form, is held in place by anti-friction assist in meeting the decrease in bear-ing surface when a new bearing is placedon a much worn journal, the anti-fr


. The Street railway journal . emarkableshowing which the Spiral Bearing is oil grooves, cast in the bronze lining,carry the oil from the dope hole to the endsof the bearing and back again, thus insuring perfect lubrication and preventing anywaste of oil. The saving in lubricants is an important feature of the Spiral Bearing. The SPIRAL TRUCK BEARING consists of an iron shell, in which askeleton bronze lining, in a spiral form, is held in place by anti-friction assist in meeting the decrease in bear-ing surface when a new bearing is placedon a much worn journal, the anti-frictionmetal is poured so as to form a coatingover the whole surface of the bearing,about one-sixteenth of an inch thick. Spiral Bearings do not cut the jour-nals but insure an even and minimumwear. A special feature of the SpiralBearings is their absolute safety. In theevent of the heating of an armature bear-ing, from any cause, the bronze lining prevents the letting down of thearmature. Q oooooooooooooooooooooooo o-ooooooooc.


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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884