. American engineer and railroad journal . ch arc dumped into the hop- pers ; a machine with a circular crane on a parallel track suc-cessively lifts each car. The whole of the system includes,first, a hopper used as an intermediate between the car and thevessel ; second, a special machine equipped with a crane in-tended for raising the body of the cars. A word of explana-tion is necessary regarding each of these twTo the hopper : each hopper may be considered as composedof a fixed and movable portion. The fixed portion is com-posed of cast-iron plates fastened to the mason
. American engineer and railroad journal . ch arc dumped into the hop- pers ; a machine with a circular crane on a parallel track suc-cessively lifts each car. The whole of the system includes,first, a hopper used as an intermediate between the car and thevessel ; second, a special machine equipped with a crane in-tended for raising the body of the cars. A word of explana-tion is necessary regarding each of these twTo the hopper : each hopper may be considered as composedof a fixed and movable portion. The fixed portion is com-posed of cast-iron plates fastened to the masonry wall of thewharf by means of pieces of wood built into the mason fixed portion narrows down toward the edge of the wharfand has two inclinations. At the top it is 42°, and toward thebottom, where the inclination is the greatest, it is 50°. Themovable portion includes a shute and a neck. The shute isformed of sheet metal, and is arranged so that it can be fixedat different inclinations, in order to regulate the height of the. Fig. KOLENTIP AT ROTTERDAM, HOLLAND. fall of the coal from the hopper into the boat, in order that thecoal may not be broken or injure the boats. The neck ispivoted at the end of the shute and can be put in differentpositions, permitting the distribution of the coal along thewhole length of the vessel. A sluice gate closes the openingof the fixed hopper when the boat is not ready to receive itsload at once. Counterweights balance the weight of the mov-able shute, and thus make its manipulation easy. Methods of Transportation.—The Societe de Charbonniere deLens uses single box cars, which have been found to be par-ticularly satisfactory. The box of these cars is made of iron,and stands directly on the frames; the capacity of the box islimited transversely by pieces fastened to the cars sills, whichabut directly against the longitudinal sills of the car. Thesides of the car are movable ; the center is formed of twopanels opening v
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
