The Mechanical Handling and Storing of Material
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
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358
THE MECHANICAL HANDLING OF MATERIAL
tram-car devices. The ore pockets were constructed of steel throughout, and designed to
prevent the formation of arches in the ore mass
feed. The sectional view, Fig. 500, shows how this
and consequent interruption in the
is accomplished by louvres. These
louvres also afford access to the
Figs. 499 and 500. Showing Hoover & Mason’s Ore
and Coke Pockets and Scale Car.
pockets in the case of a few very
sticky ores, which, despite the
louvres, have a tendency to
choke. The withdrawing of ore
from the pockets is effected by
a rotating cylinder 5 ft. in dia-
meter. The aperture for the
exit of the ore is in all cases
equal to the width of the pocket,
so that the ends of the pocket
are vertical. When it is desired
to withdraw ore, these rollers are
set in motion, forming a feeding
device which carries the ore out
of the pocket, and to a consider-
able extent loosens up the mass
within the pocket. These rollers
are actuated by a motor-driven
continuous running shaft, which
can be geared to them by a fric-
tion clutch.
The rollers on the coke side
are perforated, and efficiently act
as screens in separating the dust
from the coke (see Fig. 500).
A hot-air chamber is placed
under the ore bins in order to
prevent their contents from freez-
ing in cold weather.
One weighing truck only is
needed for each furnace. In
the course of a year one man
has kept a large furnace full
without difficulty. Each weigh-
ing truck has two compartments,
each holding a skipful (see Fig.
500). All material delivered to
the furnace is weighed before
entering the skip. The weigh-
ing truck is driven by electricity.
The weight of each increment is recorded upon a strip of paper by the balancing of the
beam, and is thus placed beyond the reach of any tampering, an unimpeachable record
being kept of the total weight of material fed into the furnace. The coke is distributed
along a considerable length, and not, as is often the case, into two large ore bins,
delivering directly into the skip. The advantages of this plan are, firstly, that it enables