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Патент USA US3100462

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Aug. 13, 1963
Filed March 16. 1961
6 Sheets-Sheet l
Aug. ’ 13, 1963
Filed March 16. 1961
6 Sheets-Sheet 2
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Filed March 16. 1961
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United States Patent O
Patented Aug. 13“, 1963
«omitted `»and certain parts broken away to illustrate better
the construction.
George B. Dorey, Westmount, Quebec, Canada, assignor
to Enterprise Railway Equipment Company, Chicago,
Ill., a corporation of Illinois
' Filed Mar. 16, 1961, Ser. No. 96,244
6 Claims. (Cl. 10S-_282)
This invention relates to an improved dischar-ge outlet
FIG. 3 is an end elevational view of FlG. l »as viewed
from right to left.
FIG. 4 is a ver-tical longitudinal sectional view‘taken
on a line 4_4 lof FIG. 2.
FIG. 5 is a vertical longitudinal sectional view similar
to FIG. 4 except that the :gate is shown in opened position.
FIG. 6 is Ia vertical longitudinal sectional View similar
to FIG. 4 Vexcept that the gate is shown with its leading
structure for a hopper and relates more specifically to
edge withdrawn from its elevated position and its sup
that type of hopper having a discharge opening with a
porting brackets. '
movable gate `for controlling discharge of lading such
FIG. 7 is a ver-tical longitudinal sectional view similar
to FIGS. 4, 5 :and 6 except that the gate is shown in
as largely employed for railway hopper cars 4.and the like.
The inven-tion is by way of an improvement on the 15 position prior to the initiation of its major tilting move
conventional type of outlet having `a sliding -gate mounted
FIG. 8 is Ia vertical longitudinal sectional View similar
to slide on horizontally disposed ledges lying in the `dis
to FIGS. 4 `and 7 inclusive except that the gate is shown
charge area. In such structures there is a tendency toward
in substantially its maximum tilted position.
retention of lading on the ledges and, owing to diliiculties
FlG. 9 is `a vertical transverse sectional view taken on
experienced in effecting proper cleaning of the gates and 20
associated ledges, residual ladinggenerally becomes packed
and hardened.
The hardened lading hinders the operation ‘
a `line ‘9_9’ of FIG. 1.
FIG. 10 is a detached plan view of the gate and operat
ing mechanism in assembled relation.
of the `gate `and results in delays and costl',l cleaning prob
FIG.A 111 is a vertical longitudinal sectional side view
lems »arise which penalize consignors «and consignees.
Furthermore, the lfrictional resistance incurred when 25 ofthe assembly shown in FIG. 1G' and taken along the line
dragging a sliding gate over trackways renders such a sys
tem useless with soft metal, such as aluminum.
The instant invention contemplates an improved struc
ture wherein rollers are substituted for the sliding surfaces
1‘1-1‘1 thereof.
FIG. 12 is a fractional vertical sectional view taken on a
line 12-12 «of FIG. 3.
In said drawings, `10' indicates a ‘four sided hopper
and wherein lading retaining supporting ledges are `large 30 formed in part by oppositely sloping longitudinally extend
ing walls 11 and i12 which meet with oppositely extending
ly eliminated t‘rom Ithe discharge area -and disposed ex
teriorly of the opening to support the gate rat its overhang
ing end exteriorly of the discharge area. The improve
ment further contemplates a structure wherein a gate
transversely extending walls 13 and 14 -to form the four
sides of the hopper. The said four -walls lead to la dis
charge area 15 which is closed by a movable gate 411S as
is mounted for tilting movement with mechanism allowing
lor oscillating movements of the .gate for loosening residual
lading on the gate as it is moved to closed position.
The objects of the invention among others are: To pro
vide ‘anti-friction rollers on the Igate :and cooperating
will be described.
opening; to provide `anti-friction rollers adjacent one
end ofthe `discharge opening on which the gate is arranged
to have tilting movement; -to provide a combination sliding
and tilting gate with means Vfor controllingthe tilting
movement of said gate; to provide a link operated ymovable 45
ly extending members indicated at 21 and 22 respectively.
The lower portion of the hopper 10~ is surrounded by
va frame structure 17 which is Iformed in part by side walls
members 18 and 19 which meet at one end of the discharge
area 1'5 with a transverse member 20 and ‘at the opposite
trackways for the rollers located beyond the discharge 40 end of the discharge area with upper and lower transverse
gate with supporting rollers coaxially located with refer
The said members 21 and 22 are vertically yspaced to `form
a slotted opening ‘23 therebetween `through which the gate
y16 projects to extend beneath the wall 14 of the hop
per 10.
The side members »18 and 19 each include «a vertically
extending wall section 24 lying outwardly of and adja
ence to the pivotal yaxis of the linkage connecting the link
cent the sides of the gate 16 andan upper sloping wall 25
age and gate; to provide an operating shaft having radially
«overlying the related sloping walls of the hopper proper.
extend-ing arms and linkage connecting the arms «and gate
and operable to swing the connected end of the :gate over 50 Similarly the )transversely extending wall member 20 in
cludes a vertically extending wall section 26` and an upper
and beyond the shaft; to provide a novel mechanical
slopping wall 27 which overlies the «slop-ping end wall
movement Ifor retaining -the linkage in folded relation
13 of the hopper. The sloping walls 25 of the iside mem
with an operating shaft during rotation of the latter in a
direction to close the gate; to provide open ended bearings
bers 18 and 19 and of the transverse end member 20
tor receiving an operating shaft when assembled with as 55 merge into sloping wall sections 28I which constitute roof
sociated linkages to a gate; and to provide an improved
like shields extending 'above the gate 16 when in closed '
sealing and locking member for retaining an operating
position. The said side members 18 and 19‘ Iand trans
shaft «in fully toggled relation with >a gate.
verse member 20 are provided with outwardly extending
The invention further resides in certain details of con
marginal reinforcing walls 29.
struction `and reiinement of parts such as pointed out in 60
The upper transverse wall member 21 includes a sec
the specification ‘and shown on the drawings.
tion 30 that overlies the hopper wall 14 and, »adjacent the
For comprehension of the invention reference may be
bottom margin `ot wall 1.4, it is deiiected to present a lower
had to Ithe accompanying drawings wherein the improve
section 31 sloping at a lesser angle than the hopper wall
ment is shown :as applied to the lower portion of a load
14. ’I‘he lower section 311 yis reinforced by .an angle shaped
containing hopper.
65 member 32 having angularly related Walls 33 and 34 with
ln said drawings,
wall 33 lying `against the under surface of 'wall section 311
FIG. l is `a side elevational view of the lower portion
and suitably Welded thereto. The adjacent wall 314 extends
of a `load containing hopper showing the improved outle-t
above the projecting end of the gate 16 when the latter
structure :applied thereto, said view showing the gate in
is in closed position as seen in FIG. 4.
closed position and the operating handle being omitted. . 70 i The lower transverse end member 22, which extends
FIG. 2 «is a plan view of the structure shown in FIG. 1
beneath the gate 16, is preferably in the form of an in
verted U having opplositely sloping -walls 36 and 37 con
with the hopper door sheets and shaft operating handle
' s
¿ nected on an arcuate bend 38l of substantial curvature.
Theends of the lsloping walls 36 and 37 are notched at
39 to receive rollers 4t)> whereby Vthe gate 16 «is supported
-as will be described.
Side extension members fil-«41, which preferably con
sist yof dat plate elements,'are spaced laterally outwardly
from the side walls 24 and extend lengthwisethereof, as
ì seen in FIG. 2, to la location corresponding substantially
to the end of the «travel lof the gate 16 in an opening di
rection. The said members 41-41 loverlie the walls
24 for an appreciable distance and are inwardly de
flected, .as indicated at 42-42, and said deilected ends
are suitably welded tothe walls 24-24 and to the later
ally extending reinforcing walls: 29-29 of the side wall
otally «connect tat the opposite end with the brackets
‘i5-48 through fthe medium of the rod 49.
The linkages 67 each consist of a pair of plates 63-68
which straddle the arm 64-64 and the lugs 48-48.
Connection between the arms 64I-«64 and the plates 67-67 is carried out through the medium of pivot pins
69-,69 which are retained in position by suitable welding
at each end. Each pair of link plates 68-68 are further
maintained in spaced relation by suitable welding to the
rod 49.
The shaft 62 with its radial arms 64-64 is arranged
for assembly with the gate 16, YFIGS. 10 and 1l, prior
l to its installation in the Aframe structure 17 and to this
end `each bearing l63, FIG. l2, presents an open end to
members 18 and 19.
‘ The gate 16 (FIGS. 1G and 11) is preferably formed
of a plate 45 having one end flanged as at 46 and side
`flanges 147-~47 forming therewith a three sided pan
permit ready installation yor removal of t-hegate assembly.
Each bearing 63 preferably consists of a plate bent into
a U-shape with a semi-circularly shaped end portion 72
seen in FIG. 4.
swing slightly over a vdead center line S2 connecting the
merging into upper and lower ilat wall sections 73` and
shaped member. 'l`l1e flanged end of the gate is fitted
74. rrllhe .bearings 63-63 areapplied to the frame .
with extension brackets 48-48 that are apertured for 20 structure 17 by suitably welding the same to the extension
receiving ra rod 49 therethrough. The ends fof the rod
plates y41. v The shaft 62 is held in position in the bearings
49 project bey-ond »the sidesrof the gate 16. -A roller Si)
63-63 by blocking members 76 which are formed with
is pivotally mounted ‘on each said projecting end of the
an arcuate tface 77 for registering with the acruate sur
rod 49. 'I‘he brackets ‘iS-4S extend beyond the end
face of the shaft 62. The blocking members76-76 arel
orf the gate 16 for au appreciable distance and the side 25 retained in place yby suitable cotter pins 73-’78 which
flanges 47-47 are extended .to overlap said brackets
. .extend :through the upper and lower ilat wall sections 73
48-48 -and ’are suitably welded thereto.
and 74. YThe shaft »62 is provided at one end with an
The gate 16 in its closed position slopes upwardly
operating head or handle 79 having a pair of opposed
from its projecting end to lits leading end 51 «and this
`openings 80 for the reception of an operating bar 81.
condition is attained by elevating fthe leading end 51 30
The gate 16 is retained in closed position by the arms
of Ithe gate 516 las it approaches its closed position as
64-64 andlinkages `67-6'7 which straighten »out and
Here the rupper inner corners 53 of the
edges 54 of the side flanges 47 contact the under surface
axes of shaft 62 and rod 49, as will be ‘observed by
55- of the roof like shielding wail 28 as best shown in-
reference to FIG. 4, to a toggle locked position. To
FIG. `9. The marginal edges S4 of the side flanges 47
positively retain the mechanism in its toggle locked posi~ '
tion there is provi-dedra lug 83 suitably welded to the
shaft 62 and cooperable therewith is a pawl 85. The
the gate 16 a lsutlicient extent to dispose them along a
pawl 85 preferably consists of a plate like member
horizontal level ‘and close sealing engagement with .the
sandwiched between a pair of .bracket plates 86--86,
under surface 55 when the leading end 51 of the gate
40 FIG. 2, and pivotally connected thereto by pivot pin 87
>16 is elevated.
which extends at substantially a right angle to the shaft
The leading end 51 of the gate 16, when in closed
62 thereby forming a stop preventing rotation thereof.
position as shown in FIG. ,4, seats on brackets 56--56
The bracket plates 86~-86 are suitably welded toV andV
Vwhich have inclined runways 57--57 leading to seats
extend laterally ‘outwardly from the adjacent side exten
SS-SS. 'Iihe said runways 57--57 ease the leading end
sion member 41. The lugs 83 and pawl 85 are provided
51 of the ‘gate 16 upwardly into seating engagement with
with apertures l88 and 89, as shown in FIG. 3,'Which
-the seats 58-58 »as the final closing movement of the
are arranged to be brought into registering relation for
gate is reached. The trailing `or projecting end of the
the the accommodation of a sealing ribbon 90..
gate 16, when
closed position, is carried by rollers
The mounting of the rollers 4G is preferably through
50 in ¿cooperation with the upper and lower trackways
the medium tof a rod 91 which is rotatably mounted to
59--59 >and '60»60, said trackways extending inwardly
extend at its ends through the vertical wall sections
laterally from the side extension members 41. FI`he lgate
24~24 of the [frame structure 17 and through the ex
` 16, when its leading end 51 is released yfrom its ele
tension wall members 41-41. The rod 91 -is main
vated position (FIG. `6) then bears :on the rollers 4@ and
tained against axial «displacement by stop plates 92--92
due to the distribution of the loading on the overhanging
. taper from the projecting end to the leading end 51 of
portion thereof, tilts downwardly Vabout the pivotal axis
«of rollers 40, thereby exerting an upward thrust on the
projecting end of the gate Ai6. The upward thrust of
the projecting end of the gate 16 is arrested `by upper
trackways 59-59
cooperation with the rollers 5t)
»welded to the walls 29.
The shaft 62 is maintained in axial alignment inits
bearings ’63 in one zdirection by the lug 83 and in the
opposite direction by a head 93.
T-he upper trackways 59-59 includes arcuate exten
which, as
be understood, coaot with the undersnr 60 sions 94-94 having arcuate under surfaces 95--95 con
toured to follow the path of the rollers 50 throughout
face of the trackways 59-59 to control vertical displace
the swinging movement of the connected end of the gate
ment ‘of the gate 16. The lower tnaokways >6tl--60 be
16 and to this end the arcuate surfaces 95-95 are con
come effective to support the projecting end of the gate
centrically related to the axis of rotation of the shaft
16 thereon during the gate closing operation- when the
mechanism imparts »a downward thrust to the rollers 50. 65 62. As seen in FIGS. 4~8 each side extension member
41- has an upwardly projecting portion 41a¢the ends of
The means for moving the gate 16 and controlling its
which overlie and are suitably welded to the end por- l
tilting movement in cooperation with the trackways
tions yof the arcuate extension 94 associated therewith.
l59--59 and `60m-60 includes a rotatable shaft 62 jour
The frame structure 17 is tied crosswise by means of an
naled yin bearings 63--63 disposed adjacent the outer
angle shaped member 96 which also constitutes a stop for
ends of the side extensions `41---41. The shaft 62 in
limiting movement of the arms 64-64 when the gate
oludes radially extending 'arms 64 which preferably oon
16 is in closed position.
sist of «ilat bars suitably welded thereto to form there
Grooves 97 and 98 are provided on the underside _of
with an integrated structure. Linkages 67-67 pivotal!
the iframe structure 17 for receiving a discharge chute
1y connect at' one end: withl the arms 64-64 and vpiv 75 (not shown). 'Phe groove 97 is formed between the un
derside of one of the walls 29 and a plate 99, FIG. `9,
spaced‘therefrom while the groove 98 is formed between
the underside of the wall 36 anda ilange of an angle
age at the end of said gate to which said Ilinkage is
2. The invention as set `forth in claim 1, wherein the
shaped member 100, FIG. 8, suitably welded to the
arm means includes a pair of arms in spaced relation on
5 the shaft, the linkage includes link means ‘individual to
The -operation of the mechanism and the advantages
each arm, and the reaction of the trackway means is
thereof may be >best realized by considering the se
through the pivotal connections between the link means
quence of movement involved in Áone opening and closing
and the gate.
closing cycle of the gate 16. Assuming the «gate -16 in
3. |In combination:
ctlosed position Iwith the arms 64-64 and linkages
(a) a hopper having a discharge opening `and a slidable
67-67 in straightened toggle locked position as seen
and tilting gate for said opening,
in FIGS. 1 and 4, the pawl 85 is swung to an overbalance
released position as indicated by conventional dot and
dash `lines in FIG. 3. The operator inserts the bar 81
in one of the sockets 80 of the operating head 79 and 15
by a partial rotation of the shaft 62 in a clockwise
direction, as viewed in FIG. 4, effects a break in the
toggle locked relation of the arms `64-64 and link
ages 67-67. Continued rotation of the shaft 62 in the
indicated direction moves the gate 16 a sufficient dis
tance to dislodge the leading end 51 from the seats 58--58
and allows it to drop away from the lading to the
position shown in FIG. 6. The gate 16 then balances
on the carrying rollers 40-40 and swings the projecting
» end upwardly with the lgate rollers 50-50 in contact with 25
the nnder surfaces of the npper trackways 59---59- Upon
(b) a frame structure mounted on said hopper border
ing said opening and including 4upper and lower sec
tions disposed above .and below said gate respec
(c) said upper section having Walls overlying said
hopper `and said lower sectio-n including side walls
meeting «with transversely extending walls to .form a
four sided enclosure,
`(d) one end of said gate in its closed position extend
ing over and .projecting beyond one of said trans
verse walls,
’( e) supporting trackways Ifor said gate extend-ing length
wise from said .frame structure outwardly beyond said
one transverse wall,
(f) ,rollers carried by the projecting end of said gate
further rotation of the shaft 62 the gate A16 moves out
and guided by said trackways,
wardly in a substantially horizontal plane until such time
as the linkages I67---67 yfold to seat on the shaft 62
as seen in FIG. .7. With the linkages 6’7--67 seated 30
on the shaft 62 they and arms `64--64 now operate as
radial arms as the clockwise rotation of t-he shaft 62
continues. 'l‘he connected end of the gate 16 is swung
upwardly in an arcuate path, meanwhile tilting around
(g) other rollers carried by said one transverse wall in
spaced relation to the iirst named rollers and sup
porting said gate Ifor translatory -and tilting move
ment, Iand
(h) means for moving said gate rand controlling its
.tilting movement including:
the supporting rollers 40-40 as seen in FIG. 8 with 35
(l) -a shaft carried `by said iframe structure in
lateral spaced relation to said gate when closed,
surfaces 95-95 on the arcuate extensions 94--94.
(2.) radi-ally ext-ending arms rigidly mounted in
spaced relation on said sha-ft, and
the rollers 50-50 engaging and being guided by arcuate
the rotation of the shaft 62 continues, the connected end
of the .gate 16 is swung over and across the plane of the
shaft 62 to rest thereon in fully opened position, FIG. 5. 40
The closing operation of the gate is a reversal of the
opening movement with the rollers 50-50 contacting the
under surfaces 95-95 of the arcuate extensions 94-94
to maintain the linka-ges in folded vrelation unt-il such time
as the gate 16 :again assumes the substantially horizontal 45
posit-ion, FIG. 7, »and thereafter the said rollers 50-50
roll `along the lower trackways 60--6'0.
The up and down movement of the projecting end of
the gate »16 as it is moved across the plane of the shaft 62
jars the gate 16 to sh-ake loose any residual lading adher 50
ing thereto.
What is -claimed as new is:
1. In combination:
of said gate,
(4) said .arms -and links operating as toggles to
maintain said gate in closed position.
4. In combination:
(a) an outlet assembly for a hopper having a discharge
opening and a longitudinally movable gate yfor said
(b) means on said out-let assembly supporting said gate
for movement between closed and open positions,
(c) said gate in closed position projecting at one end
beyond said opening,
(d) support means extending laterally from opposite
sides of said hopper beyond said one end of said
(a) an outlet assembly for a hopper having a discharge
opening and a movable gate for said opening,
(b) means mounting said gate on said outlet assembly
for translatory movement from and to closed posi
(c) means for moving said gate in a closing direction
and «an opening direction including a shaft rotatably
mounted on said outlet assembly in llateral spaced
relation to said gate when closed and below its path
of movement and having radially extending arm
means and linkage pivotally connected at one end to
said arm means and at the opposite end to said gate,
(d) said linkage being foldab-le to seat on said shaft
‘and rotatable therewith to lift the end connected to
said gate over and beyond said shaft upon rotation
of said sh-aft .to open said gate, and
(e) means -for retaining said linkage in folded relation
on said shaft during rotation of said shaft -to move
said Igate ifrom open position toward closed position
comprising trackway means on said outlet assembly
concentrically Idisposed with respect to .the axis of
rotation of said shaft for reacting against said link
(3) link-s pivotally connected at one end to said
arms 4and at the other end to said projecting end
gate in closed position,
(e) bearings supported on :the distal end-s of said sup
port means,
(f) a shaft journaled in said bearings,
(g) »arms extending radially
said shaft in spaced
( h) linkage pivotally interconnecting said arms and said
projecting end of said gate with the pivot axis be
tween said arms and said ~linka-ge passing «through the
path of movement of said gate during .a portion of its
movement between open land closed positions,
(ì) said bearings being open at one side to permit side
Wise insertion and removal of said sha-lit when in as
sembled relation with said gate, .and
(j) blocking means closing off the open sides of said
5. '_I'he invention «as set Ifor-th in claim 4, wherein the
blocking means «include blocking members having concave
bearing faces overlying the arcuate surface of the shaft.
6.` The invention as set forth in claim 3, wherein the
trackways have sections .concentrically disposed with re
75 spect to the axis of rotation of the shaft, and the rollers
on ,the projecting end of the .gate .react Áagainst said con
centric `sections oí- said «trackways when `sai-d ‘shaft is
rotated to move said gate ¿from open -to- closed position.
_ References Cited in the ?ìle of this p_atent
797,3 32
Stevenson ____________ __ Aug.
Coleman _____________ __ July
Hart et al. ___________ __ Dec.
`Svîsson _______________ __ June
Sheesley ___ _________ __Sept.’ 20, 1949V
=Dorey _______________ __ Nov. 11, 1958
‘Doi-ey __ ___________ ___-- Dec. v1, 1959
Retti‘g _______________ __ Aug. 1, 17893
l 2,962,983
Ingram et `a1 _________ ____ Dec. 6, 1960
Kramer ______________ __ Aug. 30, 1898
Lindstrom ____________ __ June 20, 1961
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