Forfatter: A.-M.Inst.C E., George Frederick Zimmer
År: 1916
Forlag: Crosby Lockwood and Son
Sted: London
Sider: 752
UDK: 621.87 Zim, 621.86 Zim
Being a Treatise on the Handling and Storing of Material such as Grain, Coal, Ore, Timber, Etc., by Automatic or Semi-Automatic Machinery, together with the Various Accessories used in the Manipulation of such Plant
UNLOADING VESSELS BY BARGE OR SHLP ELEVATORS
475
in which grain is carried in empty coal bunkers, or where it is stored at the side of the
propeller shaft tunnel which runs through the hold at the after end of the boat; it is
obvious that in such cases the grain can only be reached by the pneumatic elevator.
After the marine leg or bucket elevator, when unloading cargoes of grain, has cut
down to the bottom of the ship’s hold a large quantity of grain heaped at the natural
angle of repose remains all round the hold, and every bushel of this will have to be
trimmed to the elevator before it can be handled by it. With the pneumatic system the
position of the grain is quite immaterial, and wherever it may be, whether under the
hatch-coam or elsewhere, the suction pipes can be led to the grain and remove it from
the hold. The suction pipe in the hold is controlled by one man.