. American engineer and railroad journal . the chain taut at all times. When the shovel is to bedumped another band brake on this spool (not visible on theengraving) holds the dumping chain, which is attached to theapex of the shovel frame, and when the engine is reversed theshovel shovel chains are of a novel construction which .gives a AND RAILROAD JOURNAL 17 large bearing surface and great strength and safety. The linksare each made up of a number of thin steel pieces stampedout of sheet steel. The chains pass over pulleys on a trolleythat travels on the curved boom extended out f
. American engineer and railroad journal . the chain taut at all times. When the shovel is to bedumped another band brake on this spool (not visible on theengraving) holds the dumping chain, which is attached to theapex of the shovel frame, and when the engine is reversed theshovel shovel chains are of a novel construction which .gives a AND RAILROAD JOURNAL 17 large bearing surface and great strength and safety. The linksare each made up of a number of thin steel pieces stampedout of sheet steel. The chains pass over pulleys on a trolleythat travels on the curved boom extended out from the front ofthe tower. When the shovel rises to the trolley, trolley andshovel travel together along the under side of the boom upinto the tower where the contents are dumped into a hop-per. In lowering, the trolley and shovel go out on the boomtogether until the trolley is arresti d oy a stop, after which theshovel decends vertically. The boom is fixed when the plant isin operation, but it can be swung to one side, allowing the masts. return tubular boiler oi feet by 16 feet, with 98 three-inch tubesIt is rated at 100 horse-power. There is a feature of the framing of the building and bins thatdeserves mention. It will be noticed from three views of Fig. 1that on the outside there are four bands of heavy timbers. Theseare notched down over the ends of the timbers projecting throughthe sides, and all joints made so as to resist bulging under theweight of the coal in the bins. There are three passageways forcoal teams under the bins and coal can be taken into wagons inany one of these passageways or from either side of the chutes are operated from the wagon by the driver, and thetrough of the chute has a bottomof netting through which the dustof the coal passes into dust binslocated under the chutes. This successful plant has a dailycapacity of 600 to 700 tons of coaltaken from the barge and de-livered to the bins under normalworking conditions; round trips ofthe
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
