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Патент USA US3088788

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May 7, 1963
E. R. ALLER
3,088,778
RAILWAY HOPPER CARS FOR TRANSPORTING GRANULAR MATERIAL
Filed Oct. 25, 1961
4 Sheets-Sheet 1
FIG.1
INVENTOR.
EDMUND R. ALLEI?
BY
$471.7, mug») C472”)
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AUYS
May 7, 1963
E. R. ALLER
3,088,778
RAILWAY HOPPER CARS FOR TRANSPORTING GRANULAR MATERIAL
Filed Oct. 25, 1961
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4 Sheets-Sheet 2
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INVEN’f‘OR.
EDMUNU R. ALLER
BY
04,765 aw'?
(“2741/
0/704,
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M61”
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May 7, 1963
E. R. ALLER
3,088,778
RAILWAY HOPPER CARS FOR TRANSPORTINQGRANULAR MATERIAL
Filed Oct. 25, 1961
4 Sheets-Sheet 3
INVENTOR.
EDMUND R. ALLER
May 7, 1963
E. R. ALLER
3,088,778
RAILWAY HOPPER CARS FOR TRANSPORTING GRANULAR MATERIAL
Filed 001;. 25, 1961
- 4 Sheets-Sheet 4
INVENTOR
EDMUND R. ALLER
J
ATTYS
United States Patent O?ice
‘
1
3,088,778
RAILWAY HGPPER CAR§ FOR TRANSPORTING
GRANULAR MATERIAL
Edmund R. Aller, Portage, Ind, assignor to General
3,688,778
Patented May 7, 1963
2
the lower portion of the casing when the valve element
occupies its open position with respect to the valve port
and the interior of the tube is cut-off from communication
with the lower portion of the casing when the valve ele
American Transportation Corporation, Chicago, 1th, a Ul ment occupies its closed position with respect to the valve
port, and actuating means for selectively operating the
corporation of New York
valve element between its open and closed positions with
Filed Oct. 25, 1961, Ser. No. 147,577
respect to the valve port, wherein the valve element is
6 Ciairns. (Cl. 302-52)
operated by the actuating means into its open position
The present invention relates to railway hopper cars
with respect to the valve port so long as there is granular
for transporting granular material, and more particularly
material in the associated storage hopper to be unloaded
to such cars incorporating outlet nozzles of the general
therefrom, and wherein the valve element is operated
construction and arrangement of that disclosed in the co
by the actuating means into its closed position with re
pending application of Edmund R. Aller, Serial No. 140,
spect to the valve port in response to suction in the tube
936, ?led September 26, 196-1.
15 after all of the granular material in the associated storage
It is a general object of the invention to provide in a
hopper has been unloaded therefrom through the casing
railway hopper car for transporting ?nely divided or
and into the tube.
granular material, such, for example, as ?our, malt,
A further object of the invention is to provide a rail
plastic resin beads, or the like, an improved and simpli
way hopper car of the character described, wherein the
?ed pneumatic unloading system so that a pair of in
pair of ?xtures that are respectively disposed at the op
dividual storage hoppers incorporated in the body of
posite sides of the body thereof are respectively directly
the car and arranged in laterally spaced-apart relation
carried by the outer ends of the pair of tubes respectively
with respect to each other may be simultaneously un
incorporated in the pair of outlet nozzles, and wherein
loaded through a pair of bottom discharge outlets respec
the pair of ?xtures respectively carry a pair of removable
tively provided therein, without interference with each 25 closure members.
other, and without overloading of the unloading system.
A still further object of the invention is to provide a
Another object of the invention is to provide in a
railway hopper car of the character described, wherein
railway hopper car, including a body provided with
the closure members are of the quick attachment-detach
structure de?ning a pair of laterally spaced-apart storage
ment type, and further comprising a pair of hangers re
hoppers therein, an improved arrangement of a pair of
spectively carried by the outlet nozzles and respectively
outlet nozzles respectively carried by the pair of storage
carrying the closure members, wherein each of the hangers
hoppers, and a single conduit system commonly con_
accommodates both ready placement and ready removal
nected to the pair of outlet nozzles and terminating in
of the associated closure member with respect to the as
a pair of ?xtures respectively disposed at the opposite
sociated ?xture and prevents loss of the associated closure
sides of the body, wherein each of the outlet nozzles in 35 member from the associated nozzle after removal thereof
corporates automatic valve mechanism that is normally
from the associated ?xture.
operated into its open position so long as there is granu
Further features of the invention pertain to the par
lar material to be unloaded in the associated one of the
ticular arrangement of the elements of the railway hop
storage hoppers and that is operated into its closed posi
per car, whereby the above-outlined and aditional operat~
tion in response to suction in the associated conduit sys
ing features thereof are attained.
tem after all of the granular material in the associated
The invention, both as to its organization and method
one of the storage hoppers has been unloaded therefrom,
of operation, together with further objects and advantages
and wherein each one of the ?xtures mentioned may be
thereof, will best be understood by reference to the fol
selectively connected to a suction conduit for the unload
lowing speci?cation, taken in connection with the ac
ing purpose, so that the granular material stored in each 45 companying drawings, in which:
of the storage hoppers may be unloaded from the one
FIGURE 1 is a side elevational view,_partly broken
?xture, and wherein the other of the ?xtures mentioned
away, of a railway hopper car embodying the present
may be selectively controlled to supply conveying air
invention;
into the conduit system for the unloading purpose.
FIG. 2 is a plan view, partly broken away, of the rail
A further object of the invention is to provide a rail 50 way hopper car shown in FIG. 1;
way hopper car of the character described, wherein each
FIG. 3 is an enlarged vertical sectional view, partly
of the outlet nozzles includes a casing provided with a
broken away, of the railway hopper car, taken in the direc
bottom discharge opening therein and an associated bot
tion of the arrows along the line 3—3 in FIG. 1;
tom cover removably carried by the associated casing so
FIG. 4 is a greatly enlarged fragmentary vertical sec
that the granular material may be unloaded by gravity
tional view of one of the closure members carried on the
from the associated one of the storage hoppers through
outer end of one of the nozzles incorporated in the railway
the casing of the outlet nozzle thereof when the bottom
hopper car, as shown in FIGS. 1 to 3, inclusive;
cover is removed from covering relation with respect to
FIG. 5 is a greatly enlarged plan view of one of the
the bottom discharge opening therein.
outlet nozzles incorporated in the railway hopper car, as
A further object of the invention is to provide a rail 60 ‘shown in FIGS. 1 to 3, inclusive;
way hopper car of the character described, wherein each
FIG. 6 is a greatly enlarged longitudinal sectional view
of the outlet nozzles comprises a casing carried by the
of the outlet nozzle, taken in the direction of the arrows
associated storage hopper and disposed below the bot
along the line -6-—6 in PEG. 5;
tom outlet thereof and communicating therewith, a suc
FIG. 7 is a greatly enlarged lateral sectional view of
tion tube extending through the lower portion of the 65 the outlet nozzle, taken in the direction of the arrows along
casing for unloading the granular material from the
the line 7-7 in FIG. 5;
associated storage hopper through the casing, the inter
FIG. 8 is a further enlarged fragmentary sectional view
mediate section of the tube being disposed within the
of a constructional detail of the outlet nozzle, taken within
casing and having a valve port provided in the bottom
the circle designated “8” in FIG. 6, and illustrating a
thereof, a valve element arranged in the bottom of the
porous plug that may be arranged in the diaphragm in
casing below the valve port and cooperating therewith,
whereby the interior of the tube is in communication with
corporated therein;
FIG. 9 is a greatly enlarged fragmentary plan view,
3,088,778
similar to FIG. 5, illustrating a modi?ed form of the out
let nozzle that is provided with a hanger carrying the
closure member that is operatively associated with the
outer end of the suction tube incorporated therein;
FIG. V1() is a greatly enlarged fragmentary side eleva
tional view of the outlet nozzle, as shown in FIG. 9;
FIG. 11 is another greatly enlarged fragmentary side
"elevational view of the outlet nozzle, as shown in FIGS.
4
pose. On the other hand, the dividing bridges 31, etc.,
positioned at the tops of the bottom structures of the six
individual storage hoppers 41, etc., are positioned above
the center sill 11, as clearly shown in FIG. 3. Accordingly,
the three individual storage hoppers 41, 43, etc., disposed
on the side of the car '10 adjacent to the side wall 21 are
respectively provided with three downwardly tapered bot
tom wall structures that are arranged between the center
sill 1‘1 and the ‘adjacent side wall 21 of the car 10, while
FIG. 12 is a greatly enlarged end elevational view of 10 the three individual storage hoppers 42, 44, etc., disposed
on the side of the car 10 adjacent to the side wall 22 are
the outlet nozzle, as shown in FIGS. 9, 10 and 11.
respectively provided with three downwardly tapered bot
Referring now to FIGS. 1 to 3, inclusive, of the draw
tom wall structures that are arranged between the center
ings, the railway hopper car 10 there illustrated and em
sill 11 and the adjacent side wall 22 of the car 10.
bodying the features of the present invention, is especially
adapted for storage and transportation of ?nely divided 15 The roof 24 carries a plurality of longitudinally spaced
apart ?lling hatches 67 disposed on opposite sides thereof
or granular materials, such, for example, as ‘?our, malt,
‘that respectively communicate with the individual ones of
plastic resin beads, or the like; and the car 10 comprises a
v9 and 10;. and
‘the storage hopper pairs 41, 42 and 43, 44, etc.; and each
of the ?lling hatches 67 is provided with an individually
center sill 111; which underframe is supported adjacent to
associated
removable hatch cover 68 normally arranged
20
the opposite ends thereof by a pair of ‘trucks 12 carrying
in sealed relation therewith.
track wheels 13 cooperating with an associated railway
Further, the body 20 of the car 10 is provided with six
track, indicated at .14.
outlet nozzles 71, 72, 73, etc., respectively carried by the
The underframe carries a body 20, including a pair of
six collars 61, 6-2, 63, etc., and respectively communicat
longitudinally extending and laterally spaced-apart side
walls 21 and 22, a pair of laterally extending and longi 25 ing with the six bottom discharge outlets 51, '52, ‘53, etc.,
respectively provided in the six storage hoppers 41, 42, 43,
tudinally spaced-apart end walls 23, and a roof 24. Ar
etc. The six outlet nozzles 7-1, 72, etc., are of identical
ranged within the body 20 are a pair of laterally extend
construction and ‘arrangement; whereby only the outlet
ing and longitudinally spaced-apart end dividing walls,
‘rigid underframe including a longitudinally extending
one of which is shown at 25, and a pair of laterally ex
nozzle 71 has been shown in detail in FIGS. 4 to 8, in
tending and longitudinally spaced-apart intermediate d-i 30 'clusive.
Referring now to FIGS. 5 to'7, inclusive, the outlet
viding walls, one of which is shown at 27, three longi
nozzle 71 comprises a hollow casing 81 terminating in
tudinally spaced-apart dividing bridges, two of which 1are
an open top ‘82 that is surrounded by an outwardly di
respectively shown at 31 and 32, and bottom wall struc
rected substantially rectangular collar '83‘ that is ‘adapted
ture cooperating to de?ne therein six individual storage
hoppers, two of which are respectively shown at 41 and 35 to be removably secured in place below the substantially
rectangular collar 61 carried by the bottom wall struc
Y42 and two more of which are respectively shown at 43
ture of the storage hopper 41 disposed in surrounding re
and 44. In the arrangement, the three storage hoppers 41,
lation with respect to‘ the bottom discharge outlet 51 there
43, etc., are disposed in longitudinally spaced-apart rela
into. More particularly, the collar '83‘ is arranged im
tion on the side of the car 10 adjacent to the side wall 21,
‘while the three storage hoppers 42, 44, etc., are disposed 40 mediately below the collar 61 with a sealing gasket 84
therebetween and is secured in place by a plurality of
in longitudinally spaced-apart relation on the side of the
bolts 85 projecting through aligned openings respectively
car 10 ‘adjacent to the side wall 22. The two storage hop
pers '41 and 42 are commonly de?ned by the side walls
21 and 22 and by the dividing walls 25 and 27 and are
formed in the collars ‘61 and 83 and in the gasket 84 and
respectively carrying cooperating nuts 86. Also, the cas
separated laterally from each other at the lower portions 45 ing 81 terminates in a bottom discharge opening 87 dis
posed directly below the top opening 82; which bottom
thereof by the longitudinally extending dividing bridge 31
discharge opening '87 is normally closed by an associ
disposed substantially centrally therebetween. Accord
ated removable bottom cover 68. The cover 88 is nor
ingly, the two storage hoppers 41 and 42 are de?ned as a
mally retained in place by a pair of threaded studs 89'
laterally related pair in the right-hand end of the car 19, as
shown in FIGS. 1 and 2. In a similar manner, the pair of 50 respectively carrying a pair of cooperating nuts 90‘. The
inner ends of the studs 89‘ ‘are respectively received in
storage hoppers 43 and 44 are de?ned as a laterally related
pair of storage hoppers, not shown, are de?ned as a later
ally related pair in the left-hand end of the car 10‘.
a cooperating pair of threaded openings provided in the
bottom of the casing 81 and the intermediate portions
of the studs 89‘ respectively project through cooperating
individual bottom wall structure having the general con
ends of the threaded studs ‘89‘ respectively receive the
?guration of an inverted frusto pyramid and terminating in
nuts 90.
pair in the central portion of the carltl; and the other
Each of the storage hoppers 41, 42, etc., is provided with 55 openings provided in the bottom cover 88‘, and the outer
Further, the outlet nozzle 71 comprises a suction tube
a bottom discharge outlet each carrying a surrounding
91 extending laterally therethrough and formed integrally
substantially rectangular collar. For example, as shown in
FIGS. 2 and 3, the downwardly tapered bottom wall struc 60 with the casing 81; and preferably the casing 81 and
the suction tube 91 comprise an integral metal casing
ture of the individual storage hopper '41 terminates in
formed of a suitable aluminum alloy. The suction tube
the individual bottom discharge outlet 51 that is provided
91 is disposed below the rectangular collar 83 carried by
the top of the casing 81 and the opposite ends thereof
ture of the individual storage hopper 42 terminates in the 65 extend well outwardly beyond the collar 83. More par
ticularly, the suction tube 91 comprises an outer end
individual bottom discharge outlet 52 that is provided with
92a that is disposed adjacent to and below the side wall
the individual surrounding substantially rectangular collar
21 and an inner end 92b that is disposed adjacent to
62. In the arrangement, the bottom discharge outlets
and below the center sill 11. Both of the ends 92a and
51, etc., of the individual storage hoppers 41, etc., are dis
posed in a substantially horizontal common lower plane 70 92b are open, and one of them is adapted to serve as an
air ‘inlet opening into the suction tube 91, and the other
that is located well below the center sill 11 of the under
with the individual surrounding substantially rectangular
collar 61,‘ and the downwardly tapered bottom wall struc
frame of the car 10, as shown in FIGS. 1 and 3; which
of the-m is adapted to serve as an air outlet opening
from the suction tube 91, as explained more fully here
lower plane is positioned appropriately above the asso
inafter. The intermediate section of the suction tube
ciated railway track :14, as established by the wheels 13
of the trucks 12, for the usual road bed clearance pur 75 91 is disposed within the casing 81 and carries at the
5
3,088,778
bottom thereof a communicating downwardly directed
hood 93‘ terminating at the bottom thereof in a valve port
94 positioned directly above the bottom discharge open~
ing 87 in the casing 81.
Also, a diaphragm 95 is arranged in the lower por
tion of the casing 81, and more particularly between the
6
41 contains granular material, the same falls through the
bottom discharge outlet 51 into the casing 811 and accumu
lates upon the upper surfaces of the valve element 95a
and the diaphragm proper element 95c; whereby the
valve element 95a and the diaphragm proper element 950
are subject to the weight of granular material in the
bottom of the casing 81 and the bottom cover 88. Spe
casing 81 so long as there is granular material in the
ci?cally, the diaphragm 95 comprises a centrally dis
storage hopper 41, thereby to bias and to maintain the
posed section 95a constituting a valve element with re
valve element 95a in its open position with respect to the
spect to the associated valve port 94, an outer marginal 10 valve port 94. As explained more fully hereinafter, the
section 95b constituting a gasket element disposed be
granular material ‘from the storage hopper 41 is unloaded
tween the bottom of the casing 81 and the top‘ of the
via the casing 81 of the outlet nozzle 71 through the suc
bottom cover 88, and a substantially rectangular inter~
tion tube '91, the granular material proceeding from the
mediate section 95c constituting a ?exible diaphragm
casing 81 through the valve port 94, with the valve ele
proper element interconnecting the sections 95a and 9512. 15 ment 95a in its open position, and thence through the
More particularly, the diaphragm 95 may be formed of a
hood 93 into the suction tube 91. Of course, it will be
suitable sheet of rubber, or the like, and is arranged in
understood that in this unloading operation, suction is
covering relation with respect to the bottom discharge
maintained in one end of the suction tube 91 and convey
opening 87, the gasket element 95b thereof being clamped
ing air is supplied at the other end of the suction tube
in place by the bottom cover 88 upon the bottom of the 20 91. After all of the granular material has been unloaded
casing 81 in surrounding relation with the bottom dis
from the storage hopper 41 and from the casing 81 of
charge opening 87. Also, a metal reinforcing plate 96
the associated outlet nozzle 71, continued suction in the
is arranged below the lower side of the valve element
suction tube 91 causes the valve element 95a to be oper
95a and the adjacent uper side of the bottom wall of the
ated from its lower open position with respect to the
bottom cover 88; which metal reinforcing plate 96 is 25 valve port 94 into its upper closed position with respect
securely adhered to the adjacent lower surface of the
to the valve port '94 by virtue of a Bernoulli etfect that
valve element 95a for the purpose of preventing balloon
is produced in the lower portion of the casing 81 and be
ing thereof into the bottom of the hood 93 through the
tween the valve element 95a and the bottom of the hood
valve port 94, when the valve element 95a. occupies its
93 in the immediate area of the valve port 94, as explained
closed position ‘with respect to the valve port 94, as ex 30 more fully below. Accordingly, it will be understood that
plained more fully hereinafter.
in response to suction in the suction tube 91 and the con~
Also, the diaphragm 96 cooperates with the bottom
sequent suction in the lower portion of the casing 81, after
cover 88 to de?ne a chamber 97 therebetween; which
all of the granular material in the storage hopper 41 has
chamber 97 communicates with the lower portion of the
been unloaded therefrom, the valve element 95a is auto
casing 81 adjacent to the bottom discharge opening 87 35 matically operated by the diaphragm proper element
via a restricted passage formed through the diaphragm
950 from its open position into its closed position with
proper element 95c. As best illustrated in FIGS. 6 and 8,
respect to the valve port 94, whereby the communication
a hole 95d is formed through the diaphragm proper ele
between the interior of the suction tube 91 and the interior
ment 95c and located well outwardly from both the
of the casing 81 is cut-off or closed.
valve port 94 and the valve element 95a- and positioned 40
More particularly, in the absence of suction in the suc
below the bottom of the intermediate section of the suc—
tion tube 91, concurrently with or without granular mate
tion tube 91 disposed within the casing 81; and arranged
rial in the lower portion of the casing 81, the upper side
within the hole 95d is a button-like plug 98 formed of
of the valve element ‘95a and the upper side of the dia
porous material thereby to de?ne the previously mentioned
phragm proper element 950 and the hole 95d in the dia
restricted passage between the lower portion of the casing 45 phragm proper element 950 are subject to atmospheric
81 and the chamber 97 disposed below the diaphragm 95.
pressure so that the chamber 97 disposed below the dia
More speci?cally, the button~like plug 98 may be formed
phragm 95 is also subject to atmospheric pressure, with
of porous material selected vfrom the class consisting of
the result that the diaphragm proper element 950 is
ceramic materials, plastic materials, and sintered metal
operated into its lower position moving the valve element
oxide materials.
50 95a into its lower or open position with respect to the
In view of the foregoing, it will be understood that the
valve port 94 . On the other hand, suction in the suction
interior of the storage hopper 41 is in communication
tube 91, concurrently with the presence of granular mate
through the bottom discharge outlet 51 with the interior
rial in the lower portion of the casing 81, subjects the
of the casing 81 of the outlet nozzle 71. In turn, the in
upper side of the valve element 95a and the upper side
terior of the suction tube 91 communicates with the in 55 of the diaphragm proper element 95c and the hole 95d
terior of the hood 93; and the interior of the hood 93
in the diaphragm proper element 95c to relatively low air
selectively communicates with the interior of the lower
pressure (substantially below atmospheric pressure) so
portion of the casing '81 through the valve port 94 depend
that the chamber 97 is also subject to the relatively low
ing upon the position of the valve element 95a. More
air pressure, with the result that the diaphragm proper
particularly, the valve element ‘95a occupies a normal 60 element 95c is operated into its "lower position moving the
lower open position with respect to the valve port 94
valve element 95a into its lower or open position with
when the diaphragm 96 occupies its normal lower posi
respect to the valve port 94. Still on the other hand, suc
tion, as illustrated in FIGS. 6 and 7. On the other hand,
tion in the suction tube 91, concurrently with the absence
the valve element 95a occupies an operated upper closed
of granular material in the lower portion of the casing
position with respect to the valve port 94, as indicated in 65 81, subjects the upper side of the valve element 95a to
dotted lines in FIG. 6, when the diaphragm 96 occupies
relatively low air pressure (substantially below atmos
its actuated upper position. Also, as illustrated in FIGS.
pheric pressure), and subjects the upper side of the dia
6 and 7, when the valve element 95a occupies its open
phragm proper element 950 and the hole 95d in the
position with respect to the valve port 94, the bottom of
diaphragm proper element ‘95c to relatively high air
the hood '93 is in ‘open communication with the lower 70 pressure (only slightly ‘below atmospheric pressure),
portion of the casing 81; and when the valve element 95a
so that the chamber 97 is also subject to the rela
occupies its closed position with respect to the valve port
tively high air pressure, with the result that the diaphragm
94, the communication between the bottom of the hood
proper element 950 is operated into its upper position
93 and the interior of the casing 81 is cut-off or closed.
moving the valve element 95a into its upper or closed posi
Also, it will be understood that when the storage hopper 75 tion with respect to the valve port 94. Under the last
3,088,778
mentioned conditions, the upper side of the valve element‘
95a is subjected to the relatively low air pressure men
tioned, while the upper side of the diaphragm proper ele
ment 950 is subjected to the relatively high air pressure
mentioned by virtue of the Bernoulli effect as a conse
quence of the air rushing through the restricted ori?ce
de?ned between the bottom of the hood 93 and the top
side of the valve element 95a.
Moreover, the arrangement of the diaphragm proper
‘8
91. In the arrangement, the pair of locking‘cams'lll
respectively terminate in a pair of outwardly directed
handles 113 accommodating ready rotation of the locking
‘cams 111 about their pivot pins, as indicated at 114;
whereby the locking cams 111 may be readily actuated
into respective locking and interlocking positions with
respect to the annular groove 112. Also, a sealing-gasket
115 is carried in the end of the closure member 110 so
as to seal the open outer end 92a~of the suction tube 92
when theclosure member 110 occupies its-normal closing
element 950 not only constitutes mechanism for selec 10 position. Further, the outer end of the closure member
tively actuating the valve element 95a between its open.
‘110 carries a tab 116 that vis adapted to cooperate with a
and closed positions with respect to the valve port 94, as
pair of bails or rings 117 respectively carried ‘by the
described above, but the provision of the porous plug 93
‘handles 113; whereby the handles 113 may be sealed in
in the hole 95d formed through the diaphragm proper
their operated positions actuating the locking cams 111
element 950 serves as an air check valve preventing sudden 15 into their locked positions with respect to the annular
movements of the diaphragm proper element 950 between
groove 112 provided in the outer end 92a of the suction
its upper and lower positions, thereby to prevent flutter
tube 91.
of the valve element 95a between its closed and open pos1~
Of course, it will be understood that the outer endof
tions with respect to the valve port 94.
each of the outlet nozzles 71, etc., normally carries one of
Also, it will be understood that the granular material 20 the closure members 110 of the type described above in
in the storage hopper 41 may be directly unloaded by
conjunction with FIG. \4. Furthermore, the outer end of
gravity through the bottom discharge opening 87 in the
each of the outlet nozzles 71, etc., is adapted detachably
casing 81 by the removal of the bottom cover 88‘ from
to receive a collar 120 that is carried upon a suction con
its normal closed position with respect to the bottom dis
duit 121, as indicated in FIG. 3; which collar 120 is also
25
charge outlet 87. More particularly, the bottom cover
of the quick attachment-detachment type and may be of
88 may be removed from covering relation with respect
the fundamental construction and arrangement as that of
to the bottom discharge opening 87 by removal of one of
the closure member 110, as previously described in con
the nuts 90 from the associated one of the threaded studs
junction with FIG. 4.
89 and by loosening of the other of the nuts ‘)6 with re
Accordingly, it will be understood that the pair of
spect to the associated other threaded stud 89, the bot 30 storage hoppers ‘41 and 42 may ‘be simultaneously un
tom cover 88 being rotated about the retaining one of
loaded pneumatically from either side of the car 10 after
the threaded studs 89‘ from its covering position with re
removal of the closure members 110‘ from the outer ends
spect to the bottom discharge opening 87. Of course,
of the outlet nozzles 71 and 72 and upon attachment of the
this gravity unloading of the storage hopper 4-1 through
collar 120 of the suction conduit 121 to the outer end of
the casing 81 of the outlet nozzle 71, with the bottom 35 the corresponding one of the outlet nozzles 71 or 72.
cover 88 in its open position, is altogether independent
As illustrated in FIG. 3, it will be appreciated that the
of the pneumatic unloading thereof utilizing the suction
pair of storage hoppers 41 and 42 may be readily unloaded
tube 91, in the manner previously explained.
from the side of the car 10‘ adjacent to the side wall 22 by
At this point, it is noted that the crest of the inter
attachment of the collar 120 to the outer end of the outlet
mediate portion of the suction tube 91 extending longi 40 nozzle 72, after the removal of the associated closure
tudinally through the casing 801 of the outlet nozzle 71
member 110. Also, the closure member 110' normally
is provided with a general pyramidal con?guration in
carried by the outer end of the outlet nozzle 71 is removed
lateral section, as indicated at 91a, so as to facilitate the
therefrom in order to accommodate the supply of con
downward slide of the granular material from the storage
veying air into the outer end of the suction tube 91 of
hopper 41 through the casing 81 and regardless of 4:5 the outlet nozzle 71. Furthermore, at this time, one or
whether pneumatic unloading or gravity unloading of the
more of the hatch covers 68 are removed from the associ
granular material through the outlet nozzle 71 is em
ated hatches ‘67 so as to admit conveying air into the open
ployed.
tops of the storage hoppers 41 and 42. At this time,
‘As previously noted, the storage hoppers 41 and 42 con
operation of the suction machine, not shown, that is
stitute a laterally related pair, whereby the respectively 50 operatively associated with the suction conduit 121 pro
cooperating outlet nozzles 71 and 72 are disposed in
duces suction in the outlet nozzle 72 and consequently
lateral alignment with each other and are interconnected
suction is produced in the outlet nozzle 71 through the
by a cooperating pipe 1% extending laterally therebe
‘pipe 100 interconnecting the inner ends of the outlet
tween, as best shown in FIG. 3. More particularly, the
nozzles 71 and 72. The suction condition mentioned
inner end 92b of the outlet nozzle 71 is connected to the 55 effects the flow of conveying air from the exterior into
corresponding inner end of the outlet nozzle 72 by the
the outer end of the outlet nozzle 71 and therethrough
laterally extending pipe 100 extending therebetween, the
via the pipe 100 and through the outlet nozzle 72 into the
pipe 100 extending below the center sill 11, as clearly
suction conduit 121. This suction in the suction conduit
121 effects unloading of the storage hoppers 41 and 42
shown in FIG. 3.
The outer end 92a of the outlet nozzle 71 constitutes 60 through the respective bottom discharge outlets 51 and 52
a ?xture disposed adjacent to and below the side wall 21
and through the respective outlet nozzles 71 and 72 since
of the body 20 and is adapted removably to carry a do
the valve element in each of the outlet nozzles 71 and 72
sure member, indicated at 110' in FIG. 3, and shown in
occupies its open position at this time, as previously ex
some detail in FIG. 4; which closure member 110 is of
plained. Accordingly, the pair of storage hoppers ‘41 and
the quick attachment-detachment type and may be of the 65 42 are simultaneously unloaded into the suction con
construction and arrangement of that sold commercially
duit 121.
under the name “Kamlok” by the OPW Corporation.
When either one of the pair of storage hoppers 41 ‘or
More particularly, as best shown in FIG. 4, the outer
4-2 is completely unloaded, the valve element'in the asso
ciated outlet nozzle 71 or 72 is operated into its closed po
end 92a of the suction tube 91 incorporated in the outlet
sition with respect to the valve port in the associated suc
nozzle 71 removably carries the closure member 111} that
tion tube, in the manner previously explained, thereby to
constitutes a cap for the extreme outer end thereof; which
cut-01f the communication between the empty storage
closure member 110 carries a pair of diametrically op
hopper 41 or 42 and the connected suction conduit 121,
posed locking cams 111 pivotally secured thereto and
so that the granular material in the other ‘of the storage
cooperating with an annular groove 112 provided in the
exterior surface of the outer end. 92a of the suction tube 75 hoppers 41 or 42 may be subsequently completely un
3,088,778
S
loaded. When both of the storage hoppers 41 and 42
connected to the suction conduit 121 are unloaded, both
of the valve elements incorporated in the outlet nozzles
71 and 72 are operated into their closed positions with
respect to the valve ports in the associated suction tubes
incorporated in the outlet nozzles 71 and 72; whereby the
suction machine, not shown, may be shut-down and the
10
manner in the outlet nozzle 72 carried by the storage
hopper 42 and also connected to the conveying system.
Of course, the same regulation takes place in each of the
other outlet nozzles 73, etc., in the other two conveying
systems incorporated in the body 20‘ of the car 10‘.
Referring now to FIGS. 9 to 12, inclusive, a modi?ed
form of the outlet nozzle 271 is there illustrated that is
collar 120 of the suction conduit 121 may be disconnected
substantially identical to the outlet nozzle 71, as de
from the outer end of the outlet nozzle 72. At this time,
scribed above, in conjunction with FIGS. 5 to 8, in
the closure members 110 are ordinarily returned back 10 clusive, except that the outlet nozzle 271 carries a
into their closed positions with respect to the outlet nozzles
hanger 3% for supporting the associated closure mem
ber 1111}, thereby to prevent loss of the closure member
In view of the foregoing description of the unloading
119 after removal thereof from, the outer end 292a of
of the pair of storage hoppers 41 and 42 with the collar
the suction tube 291 incorporated in the outlet nozzle
120 of the suction conduit 121 connected to the outer 15 271. More particularly, the hanger 300‘ comprises a
end of the outlet nozzle 72, it will be understood that
casting that is preferably ‘formed of a suitable aluminum
this pair of storage hoppers may be unloaded in a sub
alloy. The one end of the hanger 300i terminates in a
stantially identical manner with the collar 124) of the suc
barrel 301 and the other end thereof terminates in a, slotted
71 and 72.
tion tube 121 connected to the outer end of the outlet
cross slide 3012.
The barrel 301 is rotatably mounted
nozzle 71. In other words, the pair of storage hoppers 20 upon a bolt 3113 that is secured in place upon a depending
41 and 42 may be selectively unloaded from either side
of the car 10 in a ready and simple manner.
Moreover, it will be appreciated that the unloading of
the pair of storage hoppers 43 and 44 disposed in the
central portion of the body 21} and the unloading of the
other pair of storage hoppers disposed in the left-hand
end of the body 20, as indicated in FIG. 1, may be carried
out in a substantially identical manner from either side
of the car 10 after connection of the collar 120‘ to the
lug 283a that is carried by one end of the rectangular
?ange 283 surrounding the open top of the casing 281
of the outlet nozzle 271, the shank of the bolt 30‘3 eX~
tending through the opening provided in the barrel 301
and through an aligned opening provided in the depend
ing lug 233a and the extreme inner end of the shank of
the bolt 3113 carrying a cooperating nut 304.
The top of the closure member 110‘ is securely an
chored in place in the cross slot 302:: provided in the
appropriate one of the outlet nozzles 73, etc., in the 30 cross slide 392 by an arrangement including a headed
manner explained above.
pin 3135, the shank of the pin 3G5 extending through
Furthermore, it will be appreciated that the three
the cross slot 302a, and the inner end of the shank of
pairs of storage hoppers de?ned in the body 211 may be
the pin 365 being suitably anchored in a hole provided
simultaneously unloaded from either side of the car 10
in the adjacent top portion of the closure member 110‘.
by the connection of three of the suction conduits 121 35 Thus it will be appreciated that the closure member 110
to the three corresponding ones of the outlet nozzles
may be selectively moved laterally With respect to the
71, etc., in an obvious manner; and at this point, it is
cross slide 392 into respective closing and opening posi
noted that it is common practice at an unloading station
tions with respect to the outer end 292a of the suction
to provide a plurality of suction unloading machines and
tube 291 incorporated in the outlet nozzle 271. Also,
a corresponding plurality of suction conduits 121; where 40 after the closure member 110 has been moved into open
by simultaneous unloading of the three pairs of storage
or uncovering relation with respect to the outer end 292a
hoppers incorporated in the body 20' of the railway hop
of the suction tube 291, the hanger 3410 may be rotated at
per car 10 may be readily carried out.
the barrel 3M about the bolt 3413‘ thereby selectively to
Again referring to FIGS. 5, ‘6 and 7, it is pointed out
move the closure member 119 into and out of alignment
that each of the outlet nozzles 71, etc., is self-regulat 45 with the outer end 292a of the suction tube 291, as clearly
ing with respect to the rate of supply of the granular
illustrated in FIGS. 11 and 12.
material from the associated storage hopper 41, etc.,
into the connected suction conduit.
This action may be
In view of the foregoing description of the construc
tion and arrangement of the hanger 300, it will be under
stood that when the granular material is to be unloaded
readily understood in conjunction with the mode of op
eration of the outlet nozzle 71, assuming that the collar 50 from the associated storage hopper through the outlet
12% of the suction conduit 121 is connected to the outer
nozzle 271, the handles carried by the closure member
end ‘92a of the suction tube 91 incorporated in the outlet
110 are actuated to release the associated cam mecha
nozzle 71, and further assuming that a suction condition
nism, whereupon the closure member 110 may be readily
exists in the suction conduit 121. In this case, the flow
slid outwardly with respect to the outer end 292a of
of the granular material through the suction tube 91 is
the suction tube 291, this sliding movement of the
from the right-hand or inner end 92]) thereof toward the
closure member 110 being accommodated by the pin
left-hand or outer end 92a thereof, as shown in FIG. 6;
305 cooperating with the cross slot 302a provided in
and in the event substantial granular material is being
the cross slide 302. After the closure member 110 has
supplied into the conveying system ‘from the preceding
been thus removed from covering relation with respect
storage hopper 42, there will be substantial movement 60 to the outer end 292a of the suction tube 291, the hanger
of the granular material through the suction tube 91
390 carrying the closure member 110‘ may be pivoted
from the inner end 9211 thereof toward the outer end 92a
upwardly, in the clockwise direction as viewed in FIG.
thereof, with the result that there will be substantial
12, thereby to move the closure member 110 completely
movement of the granular material over the top of the
out of the Way with respect to the open outer end 292a
hood 93 so that the suction effected througth the hood 65 of the suction tube 291; whereby at this time, the collar
93 into the lower portion of the casing 81 of the outlet
12%) carried by the suction conduit 121 may be readily
nozzle 71 is correspondingly reduced. This reduction
attached to the outer end 292a of the suction tube 291
of the suction in the hood 93 correspondingly reduces
for the unloading purpose.
the rate at which granular material is added into the con
Of course, it will be appreciated that the return of
veying system from the storage hopper 41 through the 70 the closure member 11!} back into its closed position with
casing 81 of the outlet nozzle 71. Accordingly, the ar
respect to the outer end 292a of the suction tube 291
rangement renders the outlet nozzle 71 self-regulating with
is substantially identical to that described above, the
respect to the rate of supply of granular material from
manipulations being carried out in a reverse order.
the storage hopper 41 into the conveying system. This
The arrangement of the hanger 300 carried by the
same regulation takes place substantially in a similar 75 outlet nozzle 271 is very advantageous, as it positively
3,088,778
11
12
‘by said ?xtures, each of said ?xtures being adapted to be
prevents loss of the closure member 11% from the out
let nozzle 271 incident to the manipulations involved in
the unloading of the associated storage hopper through
the outlet nozzle 271.
In view of the foregoing, it is apparent that there
has 'been provided in a railway hopper car for storing
and transporting granular material, an unloading sys
connected to a suction conduit, whereby conveying air
may be supplied from the outside into one of said ?xtures
after removal of the associated closure member and then
passed through said tubes in series relation and thence
conducted from the other of said ?xtures after removal
of the associated closure member into the suction conduit
connected to said other ?xture with the result that the
tem of improved construction and arrangement incorpo—
granular material in said storage hoppers is unloaded
rating outlet nozzles that include automatically oper
ated valves for selectively controlling the communica 10 therefrom into said respective casings and proceeds there
from through said respective valve ports with said re
tion between the casings thereof and the suction tubes
spective valve elements in their open positions and into
thereof in response'to respective loaded and unloaded
said respective tubes and is thus conveyed with the con
conditions of the connected storage hoppers. Also, the
veying air passing therethrough into the suction conduit
railway hopper car incorporates an improved unload
ing system, wherein each of the plurality of storage hop 15 connected to said other ‘?xture.
2. The apparatus set forth in claim 1, wherein each of
pers provided therein may be selectively unloaded either
said actuating means essentially comprises a diaphragm
upon a gravity basis or upon a pneumatic basis. Fur
arranged in the lower portion of the associated casing and
thermore, each of the outlet nozzles incorporates closure
subject to ‘the suction pressure therein and also subject
member and hanger structure of improved and simpli?ed
construction and arrangement, accommodating ready ma 20 to the weight of granular material in the associated casing
so long as there is granular material in the associated one
nipulation of the closure member between its open and
of said storage hoppers to be unloaded therefrom, each
closed positions with respect to the associated suction
of said diaphragms being biased into a normal lower
‘tube incorporated in the outlet nozzle incident to an un
loading operation.
While t-here has been ‘described what is at present con
position to actuate the associated valve element into its
25 open position, each of said diaphragrns being moved into
an upper position in response to suction in the lower por
sidered to be the preferred embodiment of the invention,
it will be understood that various modi?cations may be
made therein, and it is intended to cover in the appended
tion of the associated casing after all of the granular ma
terial in the associated one of said storage hoppers has
been unloaded therefrom through the associated casing
claims all such modifications as fall within the true spirit
30 into the associated tube to actuate the associated valve
and scope of the invention.
element into its closed position.
What is claimed is:
3. The railway car set forth in claim 1, wherein each
1. In a railway car for transporting granular material,
of said ?xtures is of the quick attachment-detachment
a longitudinally extending body, structure de?ning a pair
type accommodating ready placement and removal of
of laterally spaced-apart storage hoppers in said body
and respectively provided with a pair of laterally spaced 35 either the associated closure member or the associated
apart bottom discharge outlets, a pair of laterally spaced
suction conduit.
4. The railway car set forth in claim 1, wherein the
apart outlet nozzles respectively carried by said storage
casing and the tube and the ?xture of each of said nozzles
hoppers, each of said outlet nozzles including a casing
disposed below the bottom outlet in the associated one
comprises an integral metal casting.
of said storage hoppers and communicating therewith,
5. The railway car set forth in claim :1, and further
each of said outlet nozzles also including a suction tube
comprising a pair of links respectively connecting said
extending laterally through the lower portion of the asso
ciated casing for unloading the granular material from
‘the associated one of said storage hoppers, the intermedi
body and said closure members, each of said links ac
and cooperating therewith, whereby the interior of each
of laterally spaced-apart storage hoppers in said body
and respectively provided with a pair of laterally spaced
apart bottom discharge outlets, a pair of laterally spaced
apart outlet nozzles respectively carried by said storage
commodating ready placement and ready removal of the
associated closure member with respect to the associated
ate section of each of said tubes being disposed within 45 ?xture and preventing loss of the associated closure mem~
the associated casing and having a valve port provided
her from said body after removal thereof from the as
in the bottom thereof, each of said outlet nozzles further
sociated ?xture.
including a valve element aranged in the lower portion
6‘. In a railway car for transporting granular material,
of the associated casing below the associated valve port
va longitudinally extending body, structure de?ning a pair
of said tubes is in communication with the lower portion
of the associated casing when the associated valve ele
ment occupies its open position with respect to the asso—
ciated valve port and'the interior of each of said tubes
is cut-off from communication with the lower portion
of the associated casing when the associated valve ele
ment occupies its closed position with respect to the asso
ciated valve port, each of said outlet nozzles further
including actuating means for selectively operating the
associated valve element between its open and closed
positions with respect to the associated valve port, each
of said valve elements being operated by the associated
actuating means into its open position with respect to the
associated valve port in response to the presence of gran
ular material in the associated one of said storage hop
pets, each of said valve elements being operated by the
associated actuating means into its closed position with
respect to the associated valve port jointly in response
to suction in the associated tube and to the absence of
granular material in the associated one of said storage
hoppers, a transversely extending pipe interconnecting
hoppers, each of said outlet nozzles including a casing
55 disposed below the bottom outlet in the associated one of
said storage hoppers and communicating therewith, each
of said outlet nozzles also including a suction tube ex
60
65
70
the inner ends of said tubes, a pair of ?xtures respectively
carried by the outer ends of said tubes and respectively
arranged adjacent to the opposite sides of said body, and
a pair of closure members respectively removably carried 75
tending laterally through the lower portion of the asso
ciated casing for unloading the granular material from
the associated one of said storage hoppers, the intermedi
ate section of each of said tubes being disposed within
the associated casing and having a valve port provided in
the bottom thereof, each of said outlet nozzles further
including a valve element arranged in the lower portion
of the associated casing below the associated valve port
and cooperating therewith, whereby the interior of each
of said tubes is in communication with the lower portion
of the associated casing when the associated valve element
occupies its open position with respect to the associated
valve port and the interior of each of said tubes is cut-off
from communication with the lower portion of the associ
ated casing when the associated valve element occupies
its closed position with respect to the associated valve
port, each of said outlet nozzles further including actuat
13
3,088,778
ing means for selectively operating the associated valve
element between its open and closed positions with re—
spect to the associated valve port, each of said valve ele
ments being operated by the associated actuating means
into its open position with respect to the associated valve
port in response to the presence of granular material in
the associated one of said storage hoppers, each of said
14
respect to the associated ?xture and preventing loss of
the associated closure member from the associated no_z
zle after removal thereof from the associated ?xture, each
of said ?xtures being adapted to be connected to a suction
conduit, whereby conveying air may be supplied from the
outside into one of said ?xtures after removal of the
associated closure member and then passed through said
tubes in series relation and thence conducted from the
means into its closed position with respect to the associ
ated valve port jointly in response to suction in the 10 other of said ?xtures after removal of the associated
closure member into the suction conduit connected to
associated tube and to the absence of granular material
said other ?xture \with the result that the granular mate
in the associated one of said storage hoppers, a trans
versely extending pipe interconnecting the inner ends of
rial in said storage hoppers is unloaded therefrom into
said tubes, a pair of ?xtures respectively carried by the
said respective casings and proceeds therefrom through
outer ends of said tubes and respectively arranged adja 15 said respective valve ports with said respective valve
cent to the opposite sides of said body, a pair of closure
elements in their open positions and into said respective
members respectively cooperating with said ?xtures, and
tubes and is thus conveyed with the conveying air pass
a pair of hangers respectively carried by said nozzles
ing
therethrough into the suction conduit connected to
and respectively carrying said closure members, each of
said
other ‘?xture.
said hangers accommodating both ready placement and 20
ready removal of the associated closure member with
No references cited.
valve elements being operated by the associated actuating
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