Transactions . idal bottom, swunground, lowered into the pit, and again filled from the wagonalready brought on to the tipping cradle. There are, of course, two drops (if the discharge of the box intothe hold can be called a drop), the second drop being small,varying from, say, 10 feet when the box is empty to practicallynothing when it is full. The boxes are made in two sizes: onefor the ordinary 10-ton wagon and one for handling a smaller one,generally of 7 tons ; but this smaller one is gradually being re-placed by the 10-ton size, or even larger still. There is no doubtthat this system is
Transactions . idal bottom, swunground, lowered into the pit, and again filled from the wagonalready brought on to the tipping cradle. There are, of course, two drops (if the discharge of the box intothe hold can be called a drop), the second drop being small,varying from, say, 10 feet when the box is empty to practicallynothing when it is full. The boxes are made in two sizes: onefor the ordinary 10-ton wagon and one for handling a smaller one,generally of 7 tons ; but this smaller one is gradually being re-placed by the 10-ton size, or even larger still. There is no doubtthat this system is equally applicable to the large 30-ton wagon,and can be laid down at no prohibitive cost, as 7 or 10 tons of thelarger wagon-load could as easily be tipped into the existingboxes as the whole of a smaller wagon; and thus the only COAL-SHIPMEXT AXD THE LAYING-OUT OF STAITHE HEADS. 243 modification needed would be in connexion with the tippingcradles.* The Cardiff Railway Company have the exclusive i « 3 H 33 33. S5 . < v. O 3 pq M 3 o o use in the Bristol Channel of these cranes, which have proved * The author is informed that since writing this description the new Lewis-Hunter cranes erected at the Queen Alexandra dock can ship 20-ton wagons. 244 COAL-SHIPMENT AND THE LAYING-OUT OF STAITHE HEADS. by far the most satisfactory appliances for shipping1 Welshcoal with despatch and the least possible breakage. Colliery -
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Keywords: ., bookcentury1800, booksubjectmechan, booksubjectmineralindustries
