Screening
The Graphic 12 October 1878: 381
Source: Internet Archive web version of a copy in the University of Illinois Library.
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Commentary from The Graphic
The trains, on being landed at the hank, are wheeled over the weighing-tables to the ‘screen.’ At the top of each screen is a ‘tippler,’ upon which the full train is wheeled and fixed, and then the movement of a lever inverts the tippler, and the coal is shot out upon the screen below. In the sketch the girl at the top, on the left hand, is greasing the wheels of the tram, and pressing with her foot upon the break, which keeps the tippler in its inverted position. When she removes her foot the machine will right itself, and the empty truck will be drawn off and taken back to the pit for a fresh load. The ‘duck’ or small coal passes through the bars of the screen into an iron shoot beneath, which conducts it to a waggon, the end of which is just visible in the sketch; whilst the ‘round’ coal slides down the screen itself into another waggon, the run of coal down the screen being regulated by the heavy shutter and lever which the woman on the left is using. Any dirt or stone that may be mixed with the coal is picked out by hand at the foot of the screen.
Bibliography
Work at a Coal Mine, IV.” The Graphic (12 October 1878): 381. Internet Archive online version of a copy in the Library of the University of Illinois at Urbana. Web. 25 July 2021.
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Last modified 26 July 2021