. Official proceedings . hevalve is a cone shaped casting, pointed at both ends, and seatsitself against a sharp edged hardened steel ring. Its weightcauses it to cut through small sticks and roots, and that verygreat annoyance of sand still running after the valve has beenshut off is hardly ever experienced. The bottom of the spoutis covered by a cap to prevent the last few grains from drop-ping down on the machinery, and the outside sleeve protectingthe telescoping portion prevents rain from getting in. The matter of handling sand is treated in many ways, andon my own division we have quite
. Official proceedings . hevalve is a cone shaped casting, pointed at both ends, and seatsitself against a sharp edged hardened steel ring. Its weightcauses it to cut through small sticks and roots, and that verygreat annoyance of sand still running after the valve has beenshut off is hardly ever experienced. The bottom of the spoutis covered by a cap to prevent the last few grains from drop-ping down on the machinery, and the outside sleeve protectingthe telescoping portion prevents rain from getting in. The matter of handling sand is treated in many ways, andon my own division we have quite a variety of methods. Wethink the best is to put the sand house in the end of a gravitycoal wharf wherever that is practicable. The sand car canstand at the end of the wharf and does not have to be shiftedas often as the coal cars. The sand is unloaded into the wetsand bins at the top, and from there it falls by gravity throughthe stoves and is dried. It then passes through screens where Some Engine House Auxiliaries. 87. 88 Proceedings Railway Club of Pittsburgh. pebbles and other foreign matter are taken out, and falls intothe hoppers of the blowing-up drums. When one of these isfull the inlet opening is closed and air pressure turned on, andthe sand is elevated to the dry sand bin through a 2 in. elbows in this line are of cast iron, long sweep, with theouter wall much thicker than the inner. In this way they arenot cut out so quickly. In order to avoid the trouble of sandfrozen in the cars it is usual to board up the space under thecoal wharf and store the winters supply there. A small bucketconveyor elevates the sand to the bin, and the plant is inde-pendent of the weather and slow shipments. The different schemes for drying sand are almost legion,but the old stove is probably the most used. These are fre-quently made very much like the round house or cannon ballstoves, with an encircling sheet iron funnel shaped hopper hav-ing the lower portion constructed of net
Size: 1136px × 2200px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookidofficialproc, bookyear1901
