. The street railway review . s proportioned to deliver airat about too lb. pressure per sq. in., while for sand blasting andstone tools air is supplied at 70 lb. pressure. The receiver permitsthe storing of air, so that a much larger number of tools may beoperated than otherwise, since it is only occasionally that all toolsare in operation at the same time. The pressure of the air is main-tained by a pressure governor, while the compressor is prohibitedfrom running away, in case of a break on the air line, by a fly-ballspeed governor, the two governors being so combined that theyoperate upon
. The street railway review . s proportioned to deliver airat about too lb. pressure per sq. in., while for sand blasting andstone tools air is supplied at 70 lb. pressure. The receiver permitsthe storing of air, so that a much larger number of tools may beoperated than otherwise, since it is only occasionally that all toolsare in operation at the same time. The pressure of the air is main-tained by a pressure governor, while the compressor is prohibitedfrom running away, in case of a break on the air line, by a fly-ballspeed governor, the two governors being so combined that theyoperate upon a common throttle valve. The compressor engine ex-hausts into the stack, thus increasing the draught. The air com-pressor cylinder walls are jacketed and are supplied with coolingwater by a small duplex pump. Rogers Indestructible Packing. Rogers journal packing is made up of equal quantities of veryfine, long, hair-like steel shavings and high grade cotton two materials are mixed by special macliinery so that the. ROGERS Jt)i;RNAL Steel shavings cannot become separated from the cotton waste. Thepurpose of the steel is to furnish elasticity to the saturated waste,and thus hold it firmly against the journals without the necessity of
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
