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 SHIP ELEVATORS 467
that the elevator can be worked in a vertical position and still reach all parts of the
ship’s hold. For instance, when working in after-holds it is possible by tilting the jib
Fig. 648. Portable Barge Elevator Suspended from Hook of Ordinary Crane.
(The dimensions are in millimetres.)
post forward for the elevator to reach over the farther side of the shaft tunnel and still
remain in a vertical position. The same applies when working on the near side.
The unloaders are carried on strong underframes with long wheel bases ; four wheels
at each end are provided and connected to an electro-motor, so that the apparatus can
travel along the jetty to reach any hold of the ship.