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
ELEVATORS FOR MATERIAL IN BULK
25
than two should be driven together by the same belt. Frequently a number of elevators
are placed in a line, and one driving shaft runs through and drives the whole of the
elevators. There are several reasons against this practice. In the first instance, it
would be necessary that all the elevators should deliver in the same direction, which
Fig. 22. Mineral Elevator with Concrete Well Feeding Elevated Railway.
may be inconvenient. This difficulty can, however, be overcome by driving the elevator
which should deliver on the opposite side by gearing from the shaft passing through
the rest of the elevators, making those which ought to deliver in the opposite direction
somewhat shorter or longer, in order to make them terminate either under or above
this elevator shaft. There are, however, other objections to driving a number of elevators
in a line by one shaft. If one of the elevators should choke, the accident is not so