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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128 THE MECHANICAL HANDLING OF MATERIAL
that spilling is impossible, as the conveyor forms a continuous trough, so that what
one bucket misses must drop into the next one.
Fig. 174 illustrates a similar feeding device used with material of a slightly sticky
nature, an attachment giving the delivery spout a slight shaking to prevent clogging.
In Fig. 175 the conveyor is erected in a tunnel with two baffle plates over,
so that the coal or any other
Fig. 173. Feeding Device for Pan and Bucket Conveyor.
material to be conveyed can be
thrown into the conveyor from
the floor on either side.
The Link Belt Com-
pany’s Conveyor.—Fig. 176
shows the manner in which
the buckets manufactured by this
company are overlapped, as an
expedient to prevent leakage at
the loading point. It will be seen
from the illustration that the over-
lapping is obtained by suspend-
ing the buckets at extensions of
the links of the chain, instead of
from the usual support at the pin
of the chain, so that in passing
round a corner wheel the buckets
travel in a larger circle than the
chain. The illustration shows
that as soon as the link begins
to bend over one of the corner
terminals, the point of suspension
of the previous bucket is raised
above its neighbour, so that the
buckets gently disengage them-
selves from their overlap without
in any way knocking against each other when negotiating corners.
The following table gives the dimensions, capacity, and speed of this conveyor .
Bucket. Pitch of Chain. Carrying Capacity of Bucket in Cubic Feet. Capacity in Tons of Coal per Hour. Speed in Feet per Minute.
Inches. Inches.
18 X 15 18 0-68 15-20 30-40
18x21 IS 0-94 ‘20-30 30-40
24 :< 18 •24 1-68 40-50 40-50
24 x 24 24 2"24 55-70 40-50
24 x 30 24 2-80 75-100 40-50
24 x 36 24 3-36 90-120 40-50
30 x 24 30 3-50 95-120 45-60
30 x 31) 30 4’37 110-160 45-60
30x36 30 5 "25 140-190 45-60
36 x 36 36 8-50 210-330 50-80
The Bar-Link Conveyor.—This conveyor, which is built by the Steel Cable
Engineering Co., is another form of the tilting bucket conveyor, and has the buckets
s