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Motor Driven Compressors ALL TYPES AND SIZES | SS 2% to 700 cu. ft. displacement a4 git Seen te ao . A ts wy * ma . Same etag. &. atte 3th fee See, ee (for pressures up to 350 pounds 4 Er T ore ote eye hoe td me s ye Where electricity is preferred to steam as the motive power, Westinghouse-Naltional motor driven compressors also are being extensively employed for the ‘‘hundred and one” uses to which compressed air may be put in marine service— operation of pneumatic tools in ship yards and dry docks, starting Diesel engines on motor ships, operating hoists and clutch cylinders on dredges, operating scaling hammers. and paint sprayers, blowing alarm whistles on boats,and fog signals ashore, etc. These compressors are noted for their efficiency, economy of operation, and durability. * <r ay ee aaa CS Ete Va Say = ee We also make the distinctive ‘‘Pneuphonic Horn,’ a com- pressed air alarm signal, for use on water craft, in light houses, etc., which produces a commanding sound of tre- mendous carrying power. Its tone is more harmonious than that of the ordinary bell whistle and the air consump- tion is very much less. It may be had as single horn, or in multiple horn combination to produce a pleasing though penetrating signal, clearly audible for many miles. * ton tnt be. a 3 Write our nearest district office for complete information and catalogues. wid a Be ot Es * * WESTINGHOUSE TRACTION BRAKE CO. INDUSTRIAL DIVISION PITTSBURGH » » » » PENNSYLVANIA CHICAGO » NEW YORK » ST.LOUIS » SAN FRANCISCO » WASHINGTON “QUALITY ~ MACHINES » FOR « « QUALITY SERVICE” MARINE REview—April, 1931 61