. Transactions. H< 7- K H— - -*rf- Fig. 4.—Capouse Washery ; Transverse Section. round holes, through which the chestnut and smallersizes pass to the screen below. Following the roundholes are angle-irons, having the angle uppermost (A); thelower edges being in. apart, which allows flat pieces ofslate to fall through. The last 4 ft. of the top screen has holes which permit pieces the size of stove-coal to fallthrough to a chute; pieces larger than 2 in. pass over the endof the screen to another chute. The stove-coal goes to jigs, D, ANTHRACITE-WASHERIES. 619
. Transactions. H< 7- K H— - -*rf- Fig. 4.—Capouse Washery ; Transverse Section. round holes, through which the chestnut and smallersizes pass to the screen below. Following the roundholes are angle-irons, having the angle uppermost (A); thelower edges being in. apart, which allows flat pieces ofslate to fall through. The last 4 ft. of the top screen has holes which permit pieces the size of stove-coal to fallthrough to a chute; pieces larger than 2 in. pass over the endof the screen to another chute. The stove-coal goes to jigs, D, ANTHRACITE-WASHERIES. 619 thence to rolls, E and F; and, after being broken to pea-sizeand smaller, to the main elevator-boot, A. The large coal is hand-picked by six men and boys and theslate removed, after which it is sent to the rolls and the mainelevators. The coal that drops through the top screen of theshaker, 0, falls on to the second screen having |-in. holes, thechestnut-size passing over, and pea- and smaller sizes dropping. Fig. 5.—Capouse Washery (Partly in Elevation). Longitudinal Section. through to the lowest screen. The chestnut-size goes to jigs,6r, thence to rolls, E and F. The bottom screen has -^ which permit the fine coal-dirt, slush or culm (it is calledby all three names) and mud to pass through to a trough whichdelivers to a settling-pond near the washery, where the streamspreads over a large, nearly level, area, and deposits the sus-pended materials. The pea-size and smaller sizes of coal passover the bottom screen to a second shaker, H. 620 ANTHRACITE-WASHERIES. The shaking-screen is simple in construction, effective inaction, occupies little space aud needs few repairs. At theCapouse washery, each screen is suspended by J- by 8-in. ashboards, their upper ends bolted to overhead beams, and thelower to castings, which journal on bars passing under and sup-porting the screens. Two boards, comprising the hanger oneach side, are set at an angle from the vertical, so
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
