Transactions . riv-ance. Although no satisfactory invention originated from this reportat the time, it doubtless had the useful effect of stimulatinginventors to work upon the proper lines. (b) The Wrightson Coal-shipper: (1) Cramlington CoalCompany s Staithes, Howclon Dock (Tyne).—This coal-shipper{Figs. 59, 60, and 61) has already been described by Mr. JohnMorison.* The quantity which can be removed by the presentmachine has been found to be a 4-ton wagon in 30 seconds, or at therate of 480 tons per hour. With a broader belt, and a greater depthof coal, both of which are practicable, there w
Transactions . riv-ance. Although no satisfactory invention originated from this reportat the time, it doubtless had the useful effect of stimulatinginventors to work upon the proper lines. (b) The Wrightson Coal-shipper: (1) Cramlington CoalCompany s Staithes, Howclon Dock (Tyne).—This coal-shipper{Figs. 59, 60, and 61) has already been described by Mr. JohnMorison.* The quantity which can be removed by the presentmachine has been found to be a 4-ton wagon in 30 seconds, or at therate of 480 tons per hour. With a broader belt, and a greater depthof coal, both of which are practicable, there would be no difficultyin removing even larger quantities; but, owing to existing con-ditions, at present only 300 tons per hour can be run down the * Trans. Lust. M. E., 1898, vol. xv., page 67. 228 COAL-SHIPMENT AND THE LAYING-OUT OF STAITIIE HEADS. incline. Had, however, 10-ton wagons been used instead of thoseof only 4 tons capacity, the quantity of coal dealt with would haveamounted to 1,200 tons per The truck or wagon, after being brought on to the staithehead, is first discharged into a small hopper immediately below COAL-SHIPMEXT AND THE LAYING-OUT OF STAITHE HEADS. 229 the truck, from the bottom of which the coal is carried by an end-less horizontal belt along to the quay edge, and there transferred
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