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Патент USA US3044650

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July 17, 1962
R. H. JAMISON, JR
3,044,640
MATERIAL HANDLING APPARATUS
Filed July 9, 1959
2 Sheets-Sheet 1
v~ § n
‘l NVE NTOR
Richard H.Jomison,Jr.
YWZ/
ATTOW
July 17, 1962
R. H. JAMISON, JR
3,044,640 ‘ 7
MATERIAL HANDLING APPARATUS
Filed July 9, 1959
2 Sheets-Sheet 2
INVENTOR
Richo rd H.Jumison, Jr.
ATTORNEY
United States Patent O??ce
1
3,044,640 r
Patented July 17, 1962
2
two or more branch belts empty onto one main belt for
3,044,640
MATERIAL HANDLING APPARATUS
Richard H. Jamison, .lru, 11 Woodland Ave,
Greensburg, Pa.
Filed July 9, 1959, Ser. No. 826,078
3 ‘Claims. (Cl. 214—-83.36)
delivery to the tipple facilities. In this case, the device
would receive and store the surges from the branch con
veyors and deliver the combined product to the main belt I
at a predetermined and‘ controlled rate that would at all
times be within the rated capacity of the main belt.
It is a primary object of the present invention to pro
This invention relates to material receiving, storing and
vide material receiving, storing and delivery apparatus
delivery apparatus, and more particularly to mine ap
paratus for storing coal received at a nonuniform rate
and for discharging the stored coal onto a conveyor or the
like at a substantially constant rate.
which will discharge material such as coal onto a con
veyor belt or similar device at a constant and controlled
rate.
Although not limited thereto, the present invention is
particularly adapted for use in coal mining operations
where a continuous mining machine, for example, dis
Another object of the invention is to provide material
receiving, storing and delivery ‘apparatus in which ma
terial from a shuttle car, for example, may be intermit—
tently fed into a receiving and storage hopper at a‘high
rate while material may be discharged from the hopper
charges coal into a succession of shuttle cars which
travel from the mining machine location to a continuous
at a lower and relatively constant rate.
‘
belt conveyor system which transports the coal to the
As will become apparent from the following detailed
mouth of the mine or to main line hauling cars. Ordi~
description, the invention comprises an elongated hopper
narily, the shuttle cars empty directly onto the belt con 20 having a relatively wide material receiving and storing
veyor system. However, due to the fact that the con
portion de?ned between outwardly sloping side walls, and
veyor has only a limited capacity, the coal in the shuttle
a communicating delivery portion -at one end thereof.
cars must be gradually discharged onto the conveyor at
The delivery portion is provided with a discharge open
a controlled rate over a relatively long period of time,
ing defined between the ends of side walls or ba?le plates
the obvious reason being that if the capacity of the shuttle
tents in less than one minute onto a conveyor having a
which converge inwardly from the side walls of the ?rst
portion. At the bottom of the hopper is an endless
?ight conveyor for moving the material toward and
capacity of about three tons per minute will result in
excessive spillage over the sides of the conveyor. In
terminates in an upwardly inclined section ahead of the
car is three tons, for example, the discharge of its con
the example given above about one minute will be re- ,9
quired to discharge the contents of the shuttle car onto
the conveyor without spillage; however, shuttle cars,
regardless of whether their capacity is three tons ‘or
?fteen tons can be designed to discharge their entire con
through the aforesaid discharge opening. This conveyor
discharge opening to facilitate loading of the material
onto an elevated conveyor belt or the like.
In accord
ance with the present invention, a ?exible barrier com‘
‘prising one or more ?exible chain members are con
It is thus
nected between the ends of the aforesaid converging
baf?e plates and extend across the discharge opening
apparent that the operation of shuttle cars as outlined
above greatly limits their performance over that which
through the opening.‘ ‘It has been found that if the length
tents in ‘as little vas ?fteen or twenty seconds.
could be expected if they could discharge their loads ‘at
the maximum rate.
In a coal mine there may be three or more mining
locations each having a mining machine or the like to
gether with shuttle cars which discharge onto a conveyor.
The branch conveyors from each mining location then
empty onto a main conveyor which transports the coal
above the conveyor to regulate the ?ow of material
of the chain members is greater than the width across the
discharge opening whereby the chains will bow out
wardly in the direction of material movement, all of the
material stored in the hopper will be ‘forced to travel
under the chain members and none will topple over the
' chains regardless of the height of the material in the
material receiving and storing'portion of 'the hopper.
to the mouth of the mine. Normally, the capacity of 45 Thus, since the conveyor is moving at a constant speed
the main conveyor is not great enough to simultaneously
and since the chain members are positioned ‘at a ?xed
handle the maximum capacity of each of the branch
height above the floor of the discharge opening, the ma
conveyors leading to mining locations. That is, since
terial will flow through the discharge opening under the
the contents of the shuttle cars ‘at the various mining
chain members at a constant rate. In addition, since
locations are intermittently discharged onto the branch 50 the chain members are ?exible and may be readily dis
conveyors, it is assumed that the various branch con
placed, exceptionally large pieces of coal or other ma
veyors will discharge onto the main conveyor at spaced
terial will merely force the chains upwardly without
intervals so that the capacity of the main conveyor is
breaking them 'or causing the material to jam at the dis
not exceeded. Since, however, the various mining lo
charge opening. In this manner, shuttle cars, for ex
cations are separated and not in communication with
ample, may be rapidly discharged into the material re
each other, instances occur when'the loads from the var
ceiving and storing hopper while the previously received
ious mining locations exceed the capacity ‘of the main
material from the shuttle cars is discharged onto a con
conveyor and cause spillage and/or possible damage to
veyor belt at a constant rate.
the conveyor belts. As will be understood, it is highly
'The above and other objects and features of the in
desirable to provide means for controlling the rate of
vention will become readily apparent from the following
discharge of the various branch conveyors to prevent
detailed description taken in connection with the accom
panying drawings which ‘form a part of this speci?cation
the possibility of an overload on the main conveyor while
and in which:
at the same time providing means which will permit the
FIGURE 1 is a side View of the material receiving,
shuttle cars to discharge their loads at the maximum rate.
Although the foregoing discussion has been more or less 65 storing and delivery apparatus of the invention;
FIG. 2 is a top view of the apparatus shown in FIG. 1;
con?ned to instances where shuttle car transportation is
and
employed at the face areas of a mine, it should be under
FIG. 3 is a cross-sectional view taken along line III—IlI
stood that the invention also has utility in other applica
of FIG. 2.
tions. ‘For instance, in many mines that employ con
Referring now to the drawings, the apparatus shown
veyor belts for transportation of material, the invention
includes a pair of channel members 10 and 12 fastened
may be inserted into the conveyor system at a point where
together in spaced relationship by means of a plurality of
3,044,640
3
tubular members 14 which are welded or otherwise se
curely fastened to the respective channel members.
Sloping outwardly from the top of each channel mem
ber 10 and 12 is a side wall 16 or 18 which is supported
on its associated channel member by means of gussets
20. Preferably, the gussets are welded to the side walls
and channels, respectively; however, any fastening means
may be used for. this purpose, depending upon require
ments. Supported on top of the tubular members 14 is
A
extend through openings in an inverted U-shaped struc
ture comprising vertical I-beams 92 and 94 intercon
nected at their upper extremities by a third I-beam 96.
Secured to the ends of shafts 88 and 90 are plates 97
and 98. In this way spacer plates or shims 100 may be
inserted between the plates 96, 98 and the I-beam 96
to adjust the angular position of the conveyor section
38.
Means, schematically illustrated at 101, are con
nected to the shaft 60 at the forward end of conveyor
an elongated ?oor plate 22. This ?oor plate, together 10 section 38 to forcibly rotate sprockets 62 and 64 and
drive chains 66 and 68 in a clockwise direction as shown
with sloping side walls 16 and 18, de?nes ‘a material
in FIG. 1.
'
receiving and storing hopper having an entrance end 24
Secured to the innermost ends of ba?le plates 28 and
where the contents of shuttle cars or the like may be
SOIare opposite ends of a pair of chains 102 and 103
discharged into the hopper. At the opposite end of the
which extend across the discharge opening 26. Both
hopper is a discharge opening 26 de?ned between the ends
chains are longer than the width across discharge opening
of a pair of side walls of ba?le plates 28 and 30, which
26 whereby material passing through the discharge open
converge inwardly from the side walls 16 and 18, re
ing will force them to bow outwardly. Obviously, the
spectively. Side boards, not shown, may be hinged to
height of the lower chain 102 may be adjusted to suit
the tops of side walls 16 and 18 to increase the capacity
requirements; but, in general, it will be positioned far
of the hopper.
enough above the conveyor to permit material stored
As illustrated in ‘FIGS. 1 and 2, the material receiving
in the hopper to pass thereunder. The distance between
and storing hopper between side walls 16 and 18 is broken
the respective chains 102 and 103 must be such as to
along its length, it being understood that the length of
prevent material from passing through the space between
the hopper is many times its width. It will be noted
that the side walls 16 and 18 do not extend throughout 25 them. This distance will, of course, depend upon the
size of the coal or other material in the hopper. That
the length of channel members 10 and 12. Rather, the
is to say, when the material is ?ne, the distance between
forward ends of the channel members are provided with
the chains will be reduced to prevent it from passing
a pair of vertically extending side walls 32 and 34. These
through the space between them; whereas, when the mate~
side walls, together with floor plate 22‘, de?ne a trough
on the exit side of discharge opening 26. The extreme 30 rial is coarse, the distance may be increased. Further
right ends of the channel members 10 and 12 carry an
axle 36 which supports an inclined conveyor section 38
for vertical swinging movement. As illustrated, the con
veyor section 38 includes a pair of channel members 40
and 42 which are connected together by means of sep
arated tubular members 44 as were the channel mem
more, although two chains are employed in the embodi~
ment of the invention shown herein, it should be under
stood that the number of chains used depends upon
requirements. In some cases a single chain may su?ice,
while in other cases three or more chains may have to
be used, depending upon the height of the material in
the hopper. Also, a chain meshwork may be extended
bers 10 and 12. The conveyor section 38 also includes
a ?oor plate 48 together with a pair of vertically extend
ing side walls 50 and 52 which extend upwardly from
the channel members 40 and 42. The channel members
10 and 12 are supported by spaced wheels 49 and 50
which rotate at the opposite ends of an axle 51; ‘and the
bottom of conveyor section 38 is provided with a welded
above the conveyor to hold back the upper portions of
the material stored in the hopper.
In operation, shuttle cars or the like will discharge
their contents through opening 24 into the material re
skid assembly, generally indicated at 46, whereby the
ceiving and storage hopper de?ned between side walls 16
apparatus may be transported over the mine bottom.
Positioned at the extreme left end of channel members
12 ‘and 14 is ‘a conveyor foot shaft 54 for a pair of
sprockets 56 and 58. Similarly, a conveyor head shaft
60 is carried between the extreme right ends of channel
and 18. The material in the shuttle cars may be dis
charged as rapidly as desired, and as chains 66 and 68
move forwardly, the ?ights 70 will force the material to
the right as shown in FIGS. 1 and 2. Since the shuttle
cars will discharge into the material receiving and stor
members 40 and 42 and is provided with sprockets 62
and 64, both of which are keyed thereto. Movable around
and between sprockets 56 and 62 is a conveyor chain 66;
age hopper intermittently and possibly at different rates,
the height of the material in the hopper will vary along
chains as they travel along ?oor plate 22; however, these
coal should pass through discharge opening 26, it may
across the discharge opening above the conveyor, the
important thing being that a ?exible wall is provided
its length; and in most cases the height of the material
will be above the height of chain 103. If the chains 102
and, similarly, another conveyor chain 68 moves around
and 103 were not presentin the discharge opening 26, the
and between the sprockets 58 and 64. As will be under
rate of discharge through the opening would be uneven
stood, only one sprocket is keyed to shaft 54 to com
and uncontrolled. That is, the amount of material pass
pensate for ‘any out-of-phase condition of the chains.
ing through the discharge opening would depend upon
Secured to chains 66 and 68 and extending therebetween
are a plurality of box-shaped ?ights 70, each of which
the amount of material in the hopper. When, however,
the chains 102 and 103 extend across the discharge open
comprises a bottom plate 71 having a pair of side plates
72 and 74 extending upwardly therefrom. It can be 60 ing 26 in accordance with the present invention, material
such as coal in the hopper will be forced to travel under
seen in FIG. 1, for example, that as the chains 66 and
the chains at a constant rate regardless of the height of
68 move in a clockwise direction, the ?ight 70 connected
between the chains will slide along ?oor plate 22 in the
the material in the hopper. The material will not tend
material receiving and storing hopper as well as ?oor
to force its way through the chains, since the conveyor
plate 48 in the conveyor section 38. The return reaches
creates an undertow which drags the material along the
of chains 66 and 68 travel along plates 76 and 78 on
bottom of the hopper and under chain 102. The upper
the bottom of the ‘assembly, substantially as shown in
portions of the material merely move into abutment with
FIG. 3. Actually, plates are also provided above the
the chains and stop. If an exceptionally large piece of
are not shown herein for purposes of simplicity.
70 have a height greater than the height of chain 102. Due
Th side walls 50 and 52 of conveyor section 38 have
to the fact that the effective wall formed by the chains
supporting blocks 80 and 82 a?ixed thereto. Pivotally
connected to the side blocks are a pair of supporting
bars 84 and 86 which are connected at their ends opposite
the blocks 80, 82 to shafts 88 and 90. These shafts
is ?exible, however, they will merely move upwardly and
permit a large piece to pass thereunder without jamming
and consequent possible damage to the apparatus. It is
of utmost importance that the chains or other restriction
‘3,044,640
5
be ?exible to permit such large pieces to pass thereunder
without jamming. The weight of the chains 102 and
103 must, of course, be great enough to achieve the‘desired
result; and this weight may best be determined by experi
ment.
From the discharge opening 26, the material is con
veyed between side walls 32 and 34 to inclined conveyor
section 38 and then onto a belt conveyor, generally indi
cated at 104, which transports the material to a main
6
,
_
,
through said open discharge end, and at least one chain
memberhaving its opposite ends connected to the respec
tive side walls and extending across said open discharge
end above said conveyor, said chain member having a
weight suflicient to_ force material'thereunder as it passes
through said open end, the length of ‘said chain member
being, greater than the distance across said discharge end
whereby it will be bowed outwardly as material passes
thereunder.
4. Material receiving, storing and delivery apparatus
conveyor leading to the mouth of the mine. By employ 10
comprising a material-receiving body having a relatively
ing the apparatus of the present invention the discharge
since the discharge rate of the material receiving, storing
wide material-receiving portion de?ned between outward
ly sloping sidewalls and a communicating delivery por
and delivery apparatus at other mine locations will also
tion at one end thereof, said delivery portion having a dis
rate of the conveyor 104 will, of course, be constant; and
be at a constant rate regardless of the rate of discharge of 15 charge opening de?ned between the ‘ends of side walls
the shuttle cars, an even ?ow of material is assured to
which converge inwardly from the side walls ofrsaidtiirst
the main conveyor to eliminate spillage and other undesir
portion, an endless conveyor having a run underlying said
able effects. With the present invention, a differential of
material-receiving bodyuand extending throughout. the
as high as 12 to 1 can be achieved between the rate at
length of the body tor'rmoving material toward and
through said discharge opening, said conveyor terminating
which material is received in the hopper from shuttle
cars and the rate of discharge through opening 26. For
example, material may be received in the hopper at the
in an upwardly inclined section ahead of said discharge
opening, and a plurality of chain members having their op
posite ends connected to the respective ends of said con
rate of 36 tons per minute or more while the material may
verging ‘side walls and extending across said discharge
be discharged under chain 102 at a rate, of only three tons
per minute or less. Thus, the shuttle cars may discharge 25 opening above said conveyor whereby material in the ma
terial-receiving body’ will be forced to travel under the
their contents into the hopper in a much shorter time
chain members at a substantially constant rate as the con
than that previously required, resulting in a faster turn
veyor moves, the height and spacing of the chain members
around time per shuttle car and vastly increased e?iciency
of operation.
Although the invention has been shown in connection
with a certain speci?c embodiment, it Will be readily appar
ent to those skilled in the art that various changes in
form and arrangement of parts may be made to suit re
quirements without departing from the spirit and scope
of the invention. In this respect, it is apparent that cables
being such that substantiallylall of the material in said
material-receiving portion will be forced to travel under
and not over or between the chain members.
5. Material receiving, storing and delivery apparatus
comprising a body having a relatively wide material re
ceiving and storing portion de?ned between side walls
I and a communicating relatively narrow portion also de
or other ?exible members could be substituted for the
?nedby side walls, a continuous conveyor arranged to
chains illustrated herein, and the term “chain-like mem
ber” is intended to include such other devices.
move along the bottom of said wide portion and extend- _
ing along the bottom of the narrow portion, ‘and a plu
rality of ?exible devices extending across said body one
1. Material receiving, storing and delivery apparatus 40 above the other between said wide and'narrow portions
and above said conveyor with the ends of the devices
comprising upwardly extending side walls and a ?oor de
being connected to the respective side walls at the junc
?ning a material receiving and storing hopper having an
ture of the wide and narrow portions, the arrangement >
open discharge end, an endless conveyor movable along
being such that material stored in the wide portion will
said ?oor for discharging material through said open dis
charge end, and at least one ?exible device having its 45 be conveyed to the narrow portion under said ?exible
devices at a‘ substantially constant rate, the height and
opposite ends connected to the respective side walls for
spacing of the ?exible devices ‘being such that substan
regulating the discharge of material through said open
' tially all of the material in said receiving and storing por
discharge end, said device extending across said open dis
tion will be forced to travel under and not over or
charge end above the conveyor but below the maximum
height of material stored in the hopper whereby mate 50 between the devices‘.
6. Material receiving, storing and delivery apparatus
rial transported by said conveyor will be forced to travel
comprising ‘a body having a relatively wide material re
under the ?exible device at a substantially constant rate.
I claim as my invention:
2. Material receiving, storing and delivery apparatus
ceiving and storing hopper de?ned by longitudinally ex
tending side walls and a communicating relatively narrow
comprising upwardly-extending side walls and a floor
de?ning a longitudinally extending material-carrying com 55 trough also de?ned between longitudinally extending side
partment having an open discharge end, an endless con
walls, a continuous conveyor arranged to move along the
veyor movable along said ?oor for discharging mate
rial through said open discharge end, and a plurality of
chain devices having their opposite ends connected ‘to
the respective side walls and extending across said open
discharge end above the conveyor whereby material trans
ported by said conveyor will be forcedv to travel under
longitudinal length of the bottom of said hopper ‘and
extending along the length of said trough whereby mate
rial stored in- the" hopper will be conveyed through the
trough, ba?le plates for guiding material from the hopper
the chain devices, said chain devices being longer than
the distance across said open end whereby they will bow
outwardly in the direction of movement of material
into the trough, and at least one ?exible device extending
across the width of said body above the conveyor and
positioned between the hopper and the trough for regu
lating the ‘amount of material passing from the hopper
through the open end and permit relatively large pieces
to the trough, the ends ofsaid flexible device being con- '
nected to the respective side walls between the hopper and I
of material to pass thereunder, the height and spacing of
the chain devices being such that substantially all of the
the trough.
7. Material receiving, storing and delivery apparatus
comprising a body having a relatively wide material re
70 ceiving ‘and storing hopper de?ned by longitudinally ex
tending side walls and a communicating relatively narrow
3. Material receiving, storing and delivery apparatus
trough also de?ned between longitudinally extending side
comprising upwardly-extending side walls and a ?oor
walls, a continuous conveyor arranged to move along
de?ning a longitudinally extending material-carrying com
the longitudinal length of the bottom of said hopper and
partment having an open discharge end, an endless con
veyor movable along said ?oor for discharging material 75 extending along the length of said trough whereby mate
material in said compartment will be forced to‘ travel
under and not over or between the chain devices.
3,044,640
7
a
rial stored in the hopper will be conveyed through the
trough, and a plurality of chain-like members extending
charge end, saidlbarrier extending across said open dis‘
charge end above the conveyor whereby material trans
ported by said conveyor will be forcedto travel under the
across said body above the conveyor and below
the top of the hopper between the hopper and the trough,
said chain-like members being such that they may bow
outwardly in ‘the direction of material movement, the
arrangement being such that material will be ‘forced to
travel under the chain-like members as it is conveyed from
the hopper to the trough regardless of the height of the
material stored in the hopper above the chain members.
l0
8. Material receiving, storing ‘and delivery apparatus
comprising upwardly extending side walls and a floor de
?ning a material receiving and storing hopper having
an open discharge end, an endless conveyor movable
along said floor for discharging material through said
open discharge end, and a ?exible barrier having its oppo
site ends oonnected to the respective side walls for reg
ulating the discharge of material through said open dis
?exible ‘barrier at a substantially constant rate, the height
of said barrier being such that material in the hopper
will not pass thereover in appreciable amounts.
References Cited in the ?le of this patent
UNITED STATES PATENTS
1,220,736
1,450,851
2,670,836
2,698,l04
2,770,377
2,837,194
Emery ______________ __ Mar. 27,
Gross _______________ __ Apr. 3,
Ball _________________ __ Mar. 2,
Dudley ______________ __ Dec. 28,
McCallum ___________ _._ Nov. 13,
Ross _______________ __'_._ June 3,
1917
1923
1954
1954
1956
1958
FOREIGN PATENTS
336,680
Great Britain _________ .._ Oct. 20, 1930
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