. Proceedings of the annual convention . st report, with the exception of switch heaters, which are to bereported separately under Assignment 8. This report also includes, at its end, the majorimprovements or additions that have been made to existing machines since the lastreport on that subject (Proceedings, Vol. 53, 1952, pages 393 to 395, incl.). Air Compressor A radically new 600-cfm portable air compressor, mounted either on rubber-tiredor flanged wheels, is now available. This machine incorporates a new type of rotarycompressor, containing no valves, pistons or clutch, and driven by a di
. Proceedings of the annual convention . st report, with the exception of switch heaters, which are to bereported separately under Assignment 8. This report also includes, at its end, the majorimprovements or additions that have been made to existing machines since the lastreport on that subject (Proceedings, Vol. 53, 1952, pages 393 to 395, incl.). Air Compressor A radically new 600-cfm portable air compressor, mounted either on rubber-tiredor flanged wheels, is now available. This machine incorporates a new type of rotarycompressor, containing no valves, pistons or clutch, and driven by a diesel engine. Theoutstanding features of the machine, as pointed out by the manufacturer, include: Two-stage compression with oil-injection cooling; air discharge temperature of below 200 deg;separate cooling systems for the engine and the compressor; a capacity control whichmaintains the output of 600-cfm at 100 psi; and hinged side covers. This type of com-pressor is also now available in 315-cfm, 210-cfm and 105-cfm sizes. See Fig. Fig. 1—New-type rotary air compressor. Maintenance of Way Work Equipment 649 Ballast Distributor A track-mounted machine for placing ballast in position for tamping was developedduring the year. The self-propelled unit, which can be operated by one man, is designedto pick up ballast from the intertrack space or shoulder by means of two conveyorsmounted on opposite sides of the machine, and deposit it in the correct position fortamping—both inside and outside the rail. The amount of ballast picked up is controlledby raising and lowering hydraulically-operated bucket conveyors. Ballast is pulled intothe path of the conveyors by means of adjustable gathering wings. This constructionis said to permit the wings to pull the ballast in from the entire intertrack space withoutfouling the adjoining track. For traveling or loading the unit for shipment, the conveyorsections can be folded into the machine. The ballast picked up by the conveyors is dep
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Keywords: ., bookauthoramericanrailwayengine, bookcentury1900, bookdecade1900
