Locomotive appliances . icient air pressure usually results inserious delays to trains, as well as rendering theiroperation less safe. Air pumps are one of the hardest things to packwell with fibrous packing, and yet one of the easiest topack with metallic packing. Several large railroadsuse shot and graphite, which in time hardens into astate similar to babbitt packing; many other railroadsuse a metallic packing of their own design; hence itwill suffice to here show the two forms of metallic airpump packing most frequently used when purchasedfrom manufacturers. UNITED STATES AIR PUMP PACKING,


Locomotive appliances . icient air pressure usually results inserious delays to trains, as well as rendering theiroperation less safe. Air pumps are one of the hardest things to packwell with fibrous packing, and yet one of the easiest topack with metallic packing. Several large railroadsuse shot and graphite, which in time hardens into astate similar to babbitt packing; many other railroadsuse a metallic packing of their own design; hence itwill suffice to here show the two forms of metallic airpump packing most frequently used when purchasedfrom manufacturers. UNITED STATES AIR PUMP PACKING, This form of packing is shown in Fig. 1 as appliedto the regular stuffing box standard to air pumps, lishould be noted that the cone is made enoughsmaller than tho stuffing box to allow some \ cone also has a shoulder fitting over the stuffing 232 LOCOMOTIVE APPLIANCES. box, thereDy preventing the gland being screwed infar enough to close up the coil form of the babbitt rings is seen to be quite. Fig. States Air Pump Packing. similar to those furnished for piston rods and valvestems by the same manufacturers. JEROME AIR PUMP PACKING. This form of metallic air pump packing is shown inFig. 2, which clearly illustrates its use. LOCOMOTIVE APPLIANCES. 233 No air pump should be used on a locomotive withoutsome form of metallic packing, as it is much less


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Keywords: ., bookcentury1900, bookdecade1900, booksubjectlocomot, bookyear1901