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
104 THE MECHANICAL HANDLING OF MATERIAL
remove any fine coal produced after the coal leaves the first screen. This improvement
is occasionally met with. As mentioned elsewhere,1 in some instances the picking band
r ig. 133. Alternative Form of Slat Conveyor, having Rollers fixed to the Slats.
itself is extended to form a jib end which can be either raised or lowered into a suitable
position, to lower the coal into wagons. This plan has two objections. In the first
Fig. 134. Howe’s Delivery Shoot.
place, the jib must be long enough to be at an angle at which the coal will not roll off
it. As a consequence, the back portion of the wagon cannot be conveniently reached,
and when starting to load, the coal has to fall at least the depth of the wagon, as the
1 See Cornet Conveyor, page 109.