. Electric railway journal . nd photographs areof a pneumatic sleet cutter designed by the writer forcutting sleet on a covered over-running third-rail sys-tem. On account of the small clearance between the third-rail and cover it was necessary to design a cutting shoewhich could be left down. The pressure is applied fromthe motormans cab without disturbing the shoe, whichhad also to be used as a current collector. The ordinaryslipper type shoe similar to that used by the Atlantic-City & Shore Railroad on its Ocean City division, ishinged on a 1-in. spindle which is rigidly held in theshoe bra
. Electric railway journal . nd photographs areof a pneumatic sleet cutter designed by the writer forcutting sleet on a covered over-running third-rail sys-tem. On account of the small clearance between the third-rail and cover it was necessary to design a cutting shoewhich could be left down. The pressure is applied fromthe motormans cab without disturbing the shoe, whichhad also to be used as a current collector. The ordinaryslipper type shoe similar to that used by the Atlantic-City & Shore Railroad on its Ocean City division, ishinged on a 1-in. spindle which is rigidly held in theshoe bracket by cotter pins. This is changed in thesleet cutting shoe, and the bracket holes are bushed withbrass and the spindle lengthened out to take the crank,which is operated by the air cylinder. The spindle ismade to work easily in the brass bushings and is heldin position by steel collars bolted to it. The end of thespindle is keyed for a %-in. key and a 2-in. steel drumis fastened to it. The crank works on this drum and. SLEET-CUTTING SHOE IN A RAISED POSITION, SHOWING TOJTHEDSTEEL BLADES WELDED ONTO THE SHOE 730 ELECTRIC RAILWAY JOURNAL [Vol. XLVIII, No. 15 is thrown in and out of gear by a small steel pin, fittedwith a tee handle. The ordinary shoe springs are lefton and when the sleet cutting device is not needed thesmall pin is lifted up and the shoe is then free to workin the usual way. The hole in the drum in which the pin engages isbored out, which allows the shoe about 1%-in. lift whenthe air is not on and the mechanism is in mesh. Thecylinder is made from a gray iron casting, bored out to2 in. in diameter, and is bolted to the underside of thethird-rail beam. There is a %-in. flange left on the topof the cylinder which fits up snug to the beam and takesthe thrust off of the holding bolts. The piston is made of steel and is fitted with a leather. The piston rod is attached to the crank bya small steel link, which makes a flexible connection andalso allows a sl
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
