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Submersible fill pipe dispensing machine

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Judy 1Q, 1956
c, D, CRANDALL,
2,754,082
SUBMERSIBLE FILL PIPE DISPENSING MACHINE
Filed Dec. 17, 1953
7 Sheets—Sheet 5
INVENTOR.
(fare?ce?. (‘ran a’aJZ
ATTORN Y.
Juiy 10,1956
C.
CRANDALL
SUBMERSIBLE FILL PIPE DISPENSING MACHINE
Filed Dec. 17, 1955
7 Sheets—Shee"I; 4.
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ATTO NE'Y.
July 10, 1956
c. D. CRANDALL
2,754,082
SUBMERSIBLE FILL PIPE DISPENSING MACHINE
Filed Dec. 17, 1953
7 Sheets-Sheet 5
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INVENTOR.
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July 10, 1956
C. D. CRANDALL
SUBMERSIBLE FILL PIPE DISPENSING MACHINE
2,754,082
Filed Dec. 17, 1953
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INVENTOR.
ATTORNEY.
July 10, 1956
c. D. CRANDALL
2,754,082
SUBMERSIBLE FILL PIPE DISPENSING MACHINE
Filed Dec. 17, 1955
7 Sheets-Sheet 7
$272-$256!
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INVENTOR.
Llczrence
.D Cmndai],
BY
nited States Patent O
2,754,082
C5
Patented July 10, 1956
2
0E the ?ow of liquid to the machine if, for any reason,
there should be a failure of the hydraulic pressure em
ployed as the motive force for the operation. Other fea
tures and the numerous advantages of the invention will
become apparent from the following description of one
2,754,082
SUBMERSELE FILL PH’E DISPENSING MACHINE
Clarence D. Crandall, Buffalo, N. Y.
Application December 17, 1953, Serial No. 398,794
16 Claims. (Cl. 249-63)
embodiment, illustrated in the accompanying drawings,
wherein:
Fig. 1 is an elevation looking from the right hand side
10 of the machine, the ?ll pipe or spear being shown in its
lowermost
'
'
'
'
liquid control or foot valve open, as it would be at the
beginning of flow of liquid;
Fig. 2 is an elevation looking from the left hand side;
Fig. 3 is a rear elevation;
This invention relates to a machine for ?lling con
tainers with predetermined quantities of ?uent material,
Pig. 4 is an enlarged fragmentary view, partly in sec
tion and partly in elevation, looking from the right, and
showing in greater detail the weighing mechanism;
and it has particular reference to a machine wherein the
material discharge pipe may be lowered into the container
at the beginning of the dispensing operation and then
Fig. 4A is a detail of a latch member shown in Figs.
progressively raised as the container is ?lled, and wherein 20 1 and 4;
the cycle of operation, including stoppage of flow of
Fig. 5 is a view in plan, with parts in section and with
material, is automatically controlled.
Numerous liquids tend to foam when poured freely
parts omitted, showing particularly a drip catching instru
mentality in the position assumed when the ?ll pipe is
into a container, due to admixture with air. The foaming
may be practically eliminated by submerging the tip of
the discharge nozzle beneath the surface of the initial
layer of the liquid. The present invention contemplates
a machine in which the discharge pipe for the liquid
25
withdrawn from the container;
Fig. 6 is a fragmentary elevation, also showing the drip
catcher;
Fig. 7 is a section through the ?ll pipe, showing the
foot valve and an actuating piston therefor;
Fig. 8 is a detail of a weight releasing mechanism, look
ing from the front of the scale;
may be moved downwardly into the container to be
?lled, and with its outlet close to the bottom thereof, and 30
Figs. 9, 10, and 11 are sections through some of the
outlet slightly below the surface of the liquid, so that
control valves incorporated in the hydraulic circuit; and
Fig. 12 is a diagram of the hydraulic circuit.
aeration and foaming will be minimized. It is further
contemplated that the ?ll pipe shall be associated with
Referring primarily to Figs. 1, 2, and 3, the machine
a weighing scale, so interconnected that the motion of
the scale beam will actuate instrumentalities to shut off
the flow of liquid when the desired amount of material
has been delivered.
More speci?cally, the invention provides a machine in
which a dispensing pipe, connected to a source of liquid 40 the conveyor frame to assist in locating the top bunU
supply, is mounted for vertical movement with respect
of the drum 24 into correct position for ?lling. A pair
to a drum or other container adapted to be positioned
on the platform of a weighing scale. At the beginning
of a cycle of operation, the container is placed on the
scale platform, and suitable adjustments are made to the
effective moment of the scale beam to offset or compensate
for the weight, or tare, of the container itself. The dis
pensing pipe, or “spear” as it may be termed, is then
lowered through the bung of the drum to be positioned
adjacent the bottom, and thereafter a liquid flow control
50
valve in the spear is opened to admit the liquid.
The spear then rises to a position adjacent the top of
the container (assuming that the container is to be ?lled
to its maximum capacity), and it is then arrested in its
motion while the ?ow control valve is actuated to its closed
position. The upward motion of the spear is then resumed
until it is out of the drum, and the drum may then be
removed and replaced by another.
The motion of the spear, from the time the operator
institutes the cycle, is controlled automatically by a num
ber of valves contained in a hydraulic circuit, and which 60
operate in proper sequence to e?fect the described motion.
One of the valves controlling the hydraulic ?uid flow,
which governs the closure of the liquid valve, is actuated
of the scale beam, which releases
a holding latch for such valve as the desired total weight
of liquid is approached.
Other features of the invention include means to dis
of upright channel iron columns 26 and 27 are mounted
in spaced relation at opposite sides of the base 21, and
they are interconnected at their upper ends by a cap 28,
which provides a support for a scale beam, hereinafter
described. It will be noted from Figs. 3 and 5 that the
columns are inclined inwardly toward each other, and
it has been found that this type of framing increases
the rigidity of the structure. A secondary base 29, secured
to the main base 21 at the back portion thereof, provides
a support for a motor 31, connected through a coupling
32 to a rotary pump 33, which develops pressure in the
hydraulic ?uid utilized for the above mentioned auto
matic operations.
An elongated cylinder 35, mounted on the outer surface
of the left hand column 27, contains a piston and its rod
36, to constitute a hydraulic ram by means of which the
above mentioned spear may be raised and lowered. As
best shown in Figs. 2 and 3,
‘
away to pass in back
is secured to two tubes
42, 43, which are slidably mounted on upright posts 44,
45, positioned between the base 21 and the overhead
cap 28. It will be seen that this arrangement constitutes
a hydraulically operated elevator .or the various parts
of the machine which are mounted on it.
One part connected to the elevator is the main liquid
supply pipe, which includes a shut-off valve 51, disposed
at the back of the machine, and pipe lengths S2 and 53,
respectively projecting inwardly and angularly upwardly
to adjacent the left hand side of the machine. The pipe
2,754,082
3
55 is not shown in Fig. 3, to avoid confusion of lines, but
the location of its upper end is shown in Fig. 5. An elbow
54 is connected to the upper .end of the pipe 53, and it is
also connected at its'forward end to a flange T ?tting
55. The lower "id of the tting 55 receives the till pipe
or spear 56, and the upper end receives a hydraulic actuat
ing cylinder 57, both of which are shown in section in
Fig. 7.
The cylinder 57 is provided with upper and lower caps
1%
rides over the rod 81, to impart a rotational thrust on
the bracket 89 and shaft 82, to rotate the shaft counter
clockwise and position the pan 87 in the broken line posi
tion of Fig. 5.
Considering next the weighting mechanism, a known
type of weighing beam assembly 191 is positioned on
top of the channel member 28, and it includes a base
102, pedestal 1%, multiple arm beam 194 pivotally
mounted thereon, connecting swivel 195, and rod 1%
extending downwardly to the scale platform 22. The
58 and 59 each having a duct 6-1 for admission and dis
charge of hydraulic ?uid, and which are secured to the
beam 194 carries weights 197, 168, and 1&9, and has a
cylinder by bolts 62 threaded into the upper end of the
T 55. The cylinder contains a piston .53, secured to a
hollow piston rod 64 which extends through both caps. 15
The lower end of the rod 64 is connected to a hollow
stem 65, which extends downwardly through a spider
eliminated by rocking a lever 113, pivoted on the base
162, to elevate a plate 114 to engage the weights and
lift their suspending hook 115 from the pointer eye 116.
pointer 111 from which may be suspended additional
weights or hangpoise 112, whose in?uence may be
in production operation, the several weights 107, 1598,
66 in the spear 56, for connection to a foot valve 67,
formed with a central bore communicating with the ducts
on the rods 64 and 65. It will be apparent that when
against the average weight of the containers 2%, or the
the rod 64, stem 65, and valve 67 is to provide a means
one end connected to the base 162, and passing over a
of collecting and removing liquid which drains from the
sprocket 118 mounted in suitably located hearings, one
1&9 are located on their arms to balance the scale
mean tare weight.
7
pressure ?uid is applied through the duct 61 in the lower 20
Assuming the machine is employed, for example, to
cap 59, the piston will be forced upwardly to seat the
?ll drums with oil, the user will employ drums of the
valve 67 against the end of the spear 56, and thus stop
same size as a matter of course, and some of these will
the flow of liquid into a container. Reverse motion of
depart from the mean tare weight by small amounts.
the piston 63 opens the valve 67 to allow liquid ?owing
A means is provided to correct for deviations, without
25
through the supply line to empty into a container.
manually resetting the weights M7, 1% or 1159 ‘in every
The purpose of having a central duct or bore through
instance. This comprises a sprocket chain 117, having
spear 56 after it has been withdrawn from the container
of which is indicated by the numeral 119 in Fig. l, as
24. Referring to Figs. 1 and 3, a spring loaded nor 30 positioned on an angle iron 121 extending forwardly
mally closed valve 71 is shown above the valve 51, and
from the column 25 on the right hand side of the ma
it is mounted on the plate 41. When the valve 71 is
chine. The other end of the chain ‘117 is connected
elevated, concurrently with the upward movement of the
to an adjustable ‘bracket 122, fastened on the rod 1%.
spear 56, and as the spear is withdrawn from a container,
It will be seen that the chain hangs over the sprocket,
35
it strikes an adjustable stop pin '72, mounted on a bracket
festoon fashion, and that part of the chain between the
73 on the upper end of the post 45, thus actuating the
sprocket and bracket 122 adds to the weight or moment
stem of the valve to open it. One port of the valve 71
imposed on the beam 1G4, or in effect adds to the tare
is connected by a hose 74 and ?tting 75 to the upper end
weight. Hence, by varying the amount of chain so
of the piston rod 64, while the other valve port is con~
added to the weight, under or over variations from the
nected by a hose to a vacuum pump, not shown. Hence, 40 mean tare weight may be compensated for. Rotation
when the valve 71 is open, a vacuum is applied to the
of the sprocket 118 is e?ected through a shaft 125,
tip of the foot valve 67, to drain drippings through the
mounted in suitable bearings 126 and 127, located on
the inner side of the angle iron 121. A hand wheel 128
is positioned on the outer end of the shaft 1'25, and the
automatically closes to discontinue the suction pressure. 45 inner end is connected to the sprocket by bevel gear
Other means for drip disposal is shown in Figs. 2, 5,
ing 129.
and 6. A slightly inclined rod 81 is fastened at its ends
A known commercially available type of visible indi
to the arms 37 and 41 of the elevator mechanism, toward
'cator is employed to show when the desired compensation
the front of the machine. The lower end of the rod
has been elfected. A link ‘i151 extends from the beam
81 is rounded off or beveled on its front. A vertical
1% to a lever 132 depending from
indicator casing
rotatable shaft 82 is supported in front of the rod $1 by
133 having a window 134
enclosing a pointer 135.
a foot bearing 33 on the base 21, and a bearing bracket
it Will suffice to note that variations in ei’iective chain
84 projecting from the cap 23. A bracket 85 is clamped
length are reflected by small changes the position of the
on the shaft 82, and it supports a short length of pipe
beam ltd. These are transmitted through the link 131
stem 65 and rod 64 to a place of disposal. When the
spear 56 begins its downward movement, the valve 71
86, on one end of which is a drip pan 87 adapted to 55 to the indicator, whose pointer can swing to one side
be positioned under the spear 56 when the spear is ele—
or the other of its center poslion to indicate under or
vated, as indicated in full lines in Fig. 5. The drippings
over deviations from the mean tare weight. When the
caught by the pan drain through a suitable slot cut in
pointer is centered, the balance is set for the true tare
the pipe 86, whose other end is connected by a ?exible
of the particular container positioned on the scale. The
conduit 9i}, leading to a point of disposal.
60 hangpoise 112, which has been held oil its hook during
A torsion spring 88, interposed between the upper end
this adjustment, is then lowered. ‘its weight is that which
of the shaft 82 and the plate $4, imparts torque on the
will exert a moment on the beam equivalent to the weight
shaft to rotate it clockwise, as viewed in'Fig. 5, and to
of the liquid to be filled.
a position locating the pan 87 under the spear 56. A
Associated with and actuated by the weighing
second bracket 89 is adjustably secured to the shaft 32, 65 anism is .a latch 141, so designated in Pi s. l T1111 4, and
above the pan 37, and on it is mounted, for rotatable
reproduced on an enlarged scale in Fig.
to facilita
adjustment, a ?nger or cam follower 91, whose inner
the disposition of the reference numerals. 'The latch
end is curved downwardly, and which is adapted to con
member comprises a plate 14?. mounted on a depending
tact the rod 81. When the elevator mechanism is in
bracket arm 143 secured to the cap 23. A latch ?nger
its upper position, the ?nger 91 slips under the lower 70 144, formed at opposite ends with detects 145 and 14%,
curved end of the rod 31, permitting the spring 38 to
is mounted on the plate 142 by a pivot pin 147. Also
rotate the shaft 82 to drip catching position beneath the
pivotally mounted on the plate is a bent lever 148, one
spear 56, and the ?nger then provides a stop to main
end of which is adapted to engage the vdetent 146 and
tain the parts in alignment. As the elevator moves down 75 maintain the ?nger 144 in an upper position. The other
to position the spear 56 in a container, the ?nger 91
52,754,685?
148 carries a threaded post 149, on
which may be mounted a number of washerlike counter
way of lines 184, 185, and cross-connection 186 into line‘
weights 151, the effect of which, of course, is to rotate
the lever 148 clockwise to release the ?nger 144.
three-Way valve 168, through line 192, check valve 193,
183. Also now on the return side is the cylinder 191 of
bracket 122 on the scale rod 106, and when the beam
and line 194 connected to line 178. The hydraulic ?uid,
under pressure of pump 33, may by-pass to the tank 161
104 is tipped down by the hangpoise 112, the bracket
122 lifts and supports the counterweights, and thereby
valve 196, and line 197 connected to line 183.
It will be noted that the counterweights are over the
through lines 164 and 195, manually adjustable poppet
positions the inner end of the lever 148 to a position
where it may engage the detent 1116. A second bent 10
lever 152, connected to a control valve iereinafter iden
ti?ed, is movable between positions where its upper end
engages the ?nger 1441 and detent 145, and a lower po
15
weight, to the dotted line position
The operation of the latch is as follows. As will be
hereinafter explained, there comes a time in the operat
ing cycle when
to hold it there temporarily. This motion causes the
upper end of the lever 152 to engage the lower edge of the
20
?nger 144i, moving it upwardly, and causing its free end
to cam over the upper end of the lever 148, which then
engages the detent 146. Prior to this time, the bracket 25
122 on the rod 1% has engaged the outer end
lever 14% to support it. The lever arm 152 then engages
side of the
central seal 208, to establish or close communication
between the valve ports. For a normally open valve,
such as the valve 166, the cylinder 211 is connected to
the opposite end of the valve body, the parts being made
interchangeable for this purpose.
the container 24, the support for the counterweights 151
is removed, thereby causing the counterweights to rotate
the lever 148 to disengage from the detent 146, and per
mitting the valve lever 152 to disengage.
The three-way valve of Fig. 10 has one more port 217
and an additional O-ring seal 213, and it will be ap~
the hydraulic circuits,
which the elevator mechanism is automati 35
and in this connection, reference may be
made to Figs. 9 through 12, showing typical valves and
the piping diagram. It will be recalled that, at the start
of a cycle, the spear 55 is elevated, the foot valve 67 is
Similarly, the hydraulic cylinder and piston
closed, and the pump 33 is running. The liquid to be 40
may be replaced by a spring or lever for mechanical,
dispensed may be understood to be under pressure from
rather than hydraulic, operation.
an extraneous source, and supplied to the valve 51 through
Fig. 11 is of the same general type, having additional
a hose connection, not shown. It will further be under
ports, rings, and reduced stem sections, so that two
stood that the operator has positioned a container under
separate ?ow paths may be established through the same
the spear 56, and has made such adjustments of the
body, as will be apparent upon inspection, without fur
chain 117 as were indicated to balance the scale against
the Weight of the container. At this time, the pump 33
is drawing the hydraulic ?uid from a tank 161 through
a suction line 162 for delivery through lines 163, 164 and
165 to a two~way valve 166, which is then '
'
be described. Fluid pres
sure is then transmitted to a three-way valve 168, such
as is shown in Fig. 10, and thence through a line 169
to the bottom of the elevator ram 35, to maintain the
A second hydraulic holding circuit is,
also in operation to maintain the foot valve at this time,
position to block ?ow through the supply 67 in closed
lines 52, 53, 54. This comprises a branch valve 51 and 60 168, thereby shifting its stem. It may be noted that no
spring is required in the cylinder 191 of this particular
171 connected to the line 163, and leading
valve.
connection 172 to a hydraulically actuated four-way valve
Referring primarily to the upper portions of Figs. 2
174 (Fig. 11), whose stem is coupled at one end to the
previously described scale-actuated
which is ?exible) and thence to the under
side of cylinder 57 to elevate its piston 63, thereby clos~
ing the foot valve 67, as has previously been explained.
Liquid displaced from the upper part of the cylinder
57 has been free to return to the tank 161, by ?ow
through partly ?exible line 178, ports 179 and 181 of
valve 174, and suction lines 132 and 183. The upper end
and 3, an angle iron 228, mounted on the posts 44 and
45, projects rearwardly of the machine, and has secured
to it a short angle iron 229, disposed at right angles and
extending toward the right, as viewed in Fig. 3. A de
pending and angularly inclined angle iron 231 '
is a compression spring 233, extends between the ?anges
of the angles 228 and 231. The bolt 232 may be ad
justed to vary the inclination of the angle 231, whose
inner ?ange constitutes a cam track.
Referring to the bottom of Figs. 2 and 3, a two-way
of the elevator ram 35 is also connected to suction by 75 valve 235 having a body such as that illustrated in Fig.
9 is mounted on the plate 41 for movement With the ele
2,754,082
vator mechanism. This valve is normally biased to
closed position by its spring (indicated in Fig. 12), and
is
,
the ‘line 165 and 'valve 166—~the spring of valve 257
holding ‘it open, inasmuch as line 256 is then connected
to a return line.
its stem is movable to open position by a cam lever and
When the spear moves downwardly, due to manual
roller 236 (connected by, a clevis to such stern), when
the elevator moves upwardly, causing the roller 236 to
engage the track 231. When the elevator and spear are
reversal of valve 168, the roller of valve 235 is released
from. the track 231, to close the valve and prevent pres
sure ?uid exerting any force, at this time, on valve 257,
which therefore remains open. As the spear reaches its
lower position, valve 174 reverses, as just explained, and
pressure is then applied through lines 173 and 255, to
one side of valve 235, but not through it at this time.
A branch line 259, connected to line 255, leads to the
cylinder of valve 166, and therefore this valve now closes.
in their'lower position, roller 236 is released from the
track 231, and vvalve 235 assumes its closed position.
When the spear 56 is elevated a certain amount, valve
235 is opened, for a purpose hereinafter explained.
Also shown in Figs. 2 and 3 is a three-way valve 241,
biased toward one of its alternate positions by a spring
242 connected to one end of its stern, and movable to
It is no desired to reverse the valve 163, so that pres
the other position by a bent lever 243 projecting inward
sure may again be applied to the bottom of the ram 35,
ly and under the plate 41 of the elevator frame and con 15 to elevate the spear at a rate consistent with the rate of
nected to the opposite end of the stem by a clevis. Re
?lling of the container. For this purpose, there is pro
ferring in this connection to Fig. 12, the common valve
vided a by-pass line' 261 around the check valve 193,
port (262a of Fig. 10) is connected to the cylinder of
leading from the lines 178, 1% to a needle valve 262, for
four-way valve 174 by a line 245. A pressure line 246,
discharge into the line 192 and the cylinder 121 of'valve
extending from the line 171, is connected to one of the
alternate ports, while the other port is connected to 're
turn through a line 2457. When the elevator mechanism
'moves to its lower position, it engages the lever 243 to
connect the pressure line to the valve 174, to perform a 25
function hereinafter discussed, and when the elevator
moves upwardly, the spring 242 restores the stern of valve
241 to cut oil pressure from the line 245, and allow the
line 245' to drain to the return side of the system. A
manually adjustable throttle valve 243 is positioned in
the pressure line 2416, to control the ?ow rate and pres
sure imposed through the valve 241 on the valve 174.
In order to institute the cycle of operation, the at
tendant pushes lever 226, thereby manually reversing
valve 163. The common line 169, leading to the bottom
of the ram 35, is now out olf from pressure, and is con
163. The needle valve 262 is set to throttle the pressure
from the line 178, so that such pressure will not actuate
valve 16% until after the foot valve 67 has opened, to
discharge a layer of liquid on the bottom of the con
tainer being ?lled. Valve 262 may therefore be termed
a timer valve, introducing a period of delay in the appli
cation of pressure to valve 16%.
When valve 163 is hydraulically operated, it is returned
to its initial positon to admit pressure ?uid to the line
169, and the lever 226 is restored to its starting position.
inasmuch as valve 166 has been closed, the pressure is
now applied through valves 257 and 25%, the latter be
ing adjustable to govern the rate of movement of the
spear 56. As the spear moves upwardly, the plate 41 of
35 the elevator mechanism recedes from the lever 243 of
valve 251, thereby permitting its spring 242 to reverse
nected to return through the line 251, in which is posi
tioned a manually adjustable throttle valve 252, con
trolling the rate of ‘how of ?uid from the bottom of the
the valve, and connect the line 21-3-5 to return line 247,
thereby releasing the pressure on the piston of valve 17a‘.
This valve, however, cannot reverse, as it is held by the
cylinder 35. The spear 56 is now free to descend un
40 latch 141.
der its own weight, and at a speed which can be regu
As the spear 5s approaches the upper limit of its travel,
lated by the setting of the valve 252.
cam track 231 engages roller 236 of valve 235, thereiy
As the spear 56 approaches the bottom of the container
opening this valve, and applying pressure to the cylinder
to be ?lled, the elevator plate 41 strikes the lever 243
of valve 257, which thereupon closes. The motion of the
of three-way valve 241, thereby shifting its stem to con
spear is accordingly arrested, although flow of liquid
nect the pressure line 246 to the common line 245 lead
into the drum continues. At’ this time, there is suflicient
ing to the cylinder of four-way valve 174, and forcing
weight of liquid in the container to begin to tip the scale
its stem to the left, or to the Fig. 11 position, thereby
beam 1%, with concurrent downward movement of the
reversing the connections to the cylinder 57 controlling
scale rod 1%. The bracket 122 therefore moves away
the spear foot valve .67. Flow is now established in this
from the lever arm 14%, enabling the arm to rotate clock
circuit through pressure line 173, ports 175 and 17"} into 4 wise and unlatch the lever 152, as has previously been
line 173 and to the top of cylinder 57. The bottom of
described.
the cylinder is now connected to return through line 177,
The spring in valve 17ai therefore now reverses this
ports 1'76 and 181, and lines 182 and 133. Accordingly,
valve, and wih it the pressure and return connections to
the piston 63 of cylinder 57 is forced down, thereby
the cylinder 57. The foot valve 6'7 of the spear therefore
opening foot valve 67, and admitting liquid into the con
begins to close and, with the release of pressure in the
tainer. The stem of valve 174, upon shifting to the left,
lines 178, 255, 25%, and 256, valves 1&6 and 257 will open,
actuates the lever 152 in a clockwise direction, so that
thereby again applying pressure to the line 169, and ele
its end engages the latch 1411, thereby preventing re
vating the spear to its ?nal position free from the con
versal of valve 1755 upon release of pressure through the
tainer at an accelerated rate of travel, due to tr e by-pass
line 245, and until the lever 152 is disengaged.
ing of regulating valve 253. There is sui?cient freedom
It will be recalled that the valve 235, which travels
of displacement of the stem of valve 235 to accommo
with the elevator, is opened by contact between its roller
date this additional upward movement.
236 and the track 231, when the spear 56 is in its upper
The counterweights 151 on the lever arm 152 are made
position. A line 255 extends from one port of this valve
substantially equal to the weight of liquid which will flow
for connection to the line 178 which, at the start of the
into the container, after the lever 152 is released and
cycle, is on the low pressure side of the system. The
until the foot valve 67 has closed, and which quantity
other port of valve 235 is connected by a ?exible line
of liquid may be termed the liquid in suspension. When
256 to the cylinder of an additional two-way valve 257,
the scale beam 104 is tipped down, the weights 151 act
which is biased by its spring to a normally open position.
70 on the rod 1%, and thus pre-load the platform 22, in
Valve 257 has one port connected to pressure line 163,
ducing the beam 1% to move upwardly sooner than it
and the other port connected to a manually adjustable
would otherwise. As the increasing weight of liquid ?ow
rod 1% downwardly,
?ow regulating valve 258, which is connected also to the
ing into the container moves the
pressure line 167 leading to valve 163. Hence, at the
this e?ect of the weights 151 is removed, as the bracket
outset of the cycle ?uid pressure may be applied to line 75 122 moves away from the under side of the lever 14%.
169 through valves 257 and 258, which are in parallel to
Hence, the liquid in suspension, added to that already
governs the position of liquid admission valve 51.
in the container, brings the total weight to that for which
the scale is set through the hangpoise 112.
interrelation of the weighing mechanism and by
draulic circuits is of considerable practical signi?cance.
elevator position also governs the position and operation
of the means for removing drip.
These instrumentalities, operating
order through suitable adjustments, in proper sequential
For example, one application of the present invention
enables one to dis
has been for the ?lling of 55-gallon drums with mineral
oil, the net weight of which may range from about three
hundred and ?fty to close to four hundred pounds. With
a well built weighing scale in good condition, the weight
while an initial quantity of liquid is delivered, then with
may be controlled wihin limits of plus or minus four 10 drawing the ?ll pipe at a rate which, if desired, will keep
ounces per drum.
the outlet ori?ce submerged to prevent foaming. Pro
It may also be mentioned that the cam track 231 for
vision is also made to arrest the withdrawal of the ?ll
valve 23$ may be adjusted through a wide range to en~
pipe at the end of the dispensing operation, and while the
able the machine to dispense as little as one gallon of
liquid supply is being shut o?”, so that spillage may be
liquid, up to quantities in excess of that just given by 15 avoided and an improper quantity will not be dispensed.
For ?lling 55-gallon drums, it has been
found advantageous to employ a 2-inch supply line 52-,
U
I
4
lll€
actual ?lling may be maintained at say ninety gallons
per minute. The hydraulic head pressure may be main
20
tained at approximately one hundred pounds or more
omitted While still retaining a system capable of operat
gage, by adjusting of the spring loaded bypass valve
ing on the submerged ?ll-pipe plan, although the entire
196, to provide an over-all ?lling cycle of approximately
one minute. Similarly, the maximum descent of the spear
56 may be readily varied by attaching a depending rod 25
(not shown) on the plate 41, to engage the lever 243
numerous changes and modi?cations of the structural
of valve 241, and such a rod may be made adjustable.
draulic cycle (for example,
motor 31 being interrupted), there could be considerable
spillage of ?ammable oil before the operator could get
the oil supply shut off. Accordingly, the invention fur—
ther provides a positive control for the supply valve til,
causing it to close in the event the hydraulic pressure
should fail. This comprises a hydraulic cylinder 265,
parts without departure from its principles. Accordingly,
it is not intended that the invention should be limited to
the precise embodiment shown, but should be deemed to
encompass all those modi?cations, variations, and com
binations which fall within the scope of the following
claims.
I claim:
1. A dispensing machine comprising a vertically dis
posed ?ll pipe, an elevator mechanism connected to the
?ll pipe for raising and lowering the same with respect
constantly connected to the pressure side of the pump
to a container, a closure valve in the ?ll pipe, a two-posi
33 by a line 266 connected to pressure lines 163 and 171.
tion controlling means for the closure valve adapted in
The cylinder 2-65 is mounted on the valve 51 by a bracket
one position to retain the closure valve closed and in the
267, and its piston 268 engages a slidable stem 269 in 40 other position to open said closure valve, governing means
the valve 51, pushing the valve element of valve 51 o?
its seat, and against spring pressure, when there is ade
quate pressure in line 266. If the hydraulic pressure
should drop below a safe operating value, the built-in
spring of valve 51 causes it to close, thereby shutting o?
the liquid supply.
From the foregoing description of a complete operat
actuated by the downward movement of the elevator
mechanism to operate said controlling means to closure
valve open position, ascent means actuated by the move
ment of said controlling means to closure valve open posi
tion to move said elevator mechanism and ?ll pipe up
wardly while said closure pipe is open, a supply conduit
connected to said ?ll pipe for the admission thereto of
material to be dispensed, and means responsive to a
predetermined quantity of material discharged from the
50 till pipe during the upward movement thereof and while
said closure valve is open to actuate said controlling
means to closure valve closed position.
2. A dispensing machine as set forth in claim 1, having
an additional means operated by the upward movement of
in parallel with the valve 258, provides for accelerated 55 the elevator to arrest the action of the ascent means, said
movement of the spear at the end of the cycle.
additional means being nulli?ed by the movement of said
The valve 174 controls the position of the piston 63 in
controlling means to closure valve closing position.
the cylinder 57, and therefore the opening and closing of
3. A dispensing machine comprising a vertically mov
the spear foot valve 67, and the position of the valve 174
able ?ll pipe, elevator mechanism connected to the ?ll
also controls the opening and closing of the valve 166. 60 pipe to move the same up and down with respect to a con—
The position of the valve 174 is controlled, on the one
tainer, said mechanism including a ram having a piston
hand, by the position of the valve 241, which in turn
movable in response to the application of ?uid pressure
is governed by the position of the elevator mechanism.
thereto, a source of ?uid pressure, elevator valve means
On the other hand, the position of the valve 174 is con
interposed between said source and said ram for applying
trolled by the quantity of material which has been dis 65 ?uid pressure thereto to raise the ram and for releasing
such pressure to enable the ram to descend, a closure
ensed. The position of the valve 257 is also controlled
valve in the ?ll pipe, a cylinder containing a piston con
by the position of the elevator, through the valve 235.
nected to said closure valve, ?uid pressure connections
The check valve 193 provides for rapid release of hy~
between said cylinder and said source to apply pressure
draulic pressure on the valve 163, while the needle valve
262 prevents too rapid an application of pressure which 70 to the piston of said cylinder, a control valve interposed
between said source and said cylinder to apply pressure
reverses the valve 163. As such pressure is governed by
thereto to open and close the closure valve, said control
the position of the valve 174, these valves are also co
ram 35, the valve 252 controls the rate of descent, and
the valve 253 controls the rate of ascent during most of
the upward movement of the spear 56. The valve 166,
valve being biased to closure valve closed position, gov
ordinated with each other. The hydraulic operating pres<
stuje is controlled by valve 196, and this pressure, in turn, 75 erning means actuated by the downward movement of the
elevator mechanism to apply ?uid pressure through said
2,754,082
11
12
lines respectively connected to said valve and to said
cylinder on opposite sides of the piston therein, a return
control valve in a direction to open the closure valve,
means responsive to the actuation of the control valve to
closure valve open position to move the elevator valve
line from said valve to said source, means in said four
way valve normally biasing the same to connect the
pressure source to that side of the cylinder which will
means to a position to move the elevator mechanism in
an upward direction, a latch member adapted to retain
the control valve in closure valve open position and en
close said closure valve and connect the opposite side
gageable with said control valve when said governing
means is actuated by downward movement .of the ele
connections through said four-way valve and thereby
of the cylinder to the return line, means to reverse the
open the closure valve, a lever connected to said four-way
vator mechanism, a material supply conduit connected 10 valve and movable to alternate positions depending on the
to the ?ll pipe, and weight controlled means responsive
connections through the four-way valve, a latch mem
to the discharge of a predetermined quantity of material
ber engageable with said lever when said connections are
through said ?ll pipe to disengage said latch member,
reversed to open the closure valve, said latch member,
whereby said control valve is restored to closure valve
while so engaged, restraining the four-way valve from
closed position.
4. A dispensing machine comprising a ?ll pipe, an ele
vator mechanism connected to the ?ll pipe and movable
15 movement under the in?uence of its biasing means, a ma
terial supply conduit connected to the ?ll pipe, a weighing
scale adapted to receive a container for such material,
to direct the ?ll pipe toward and away from a container
and means connected to a movable part of the scale and
to be ?lled, .sa'id elevator mechanism including a ram
also engageable with said latch member to trip said latch
adapted to be actuated by fluid pressure, a pressure circuit 20 member and release said lever when a predetermined
for said ram including a source of pressure, a return line
quantity of material has been discharged into the con?
to said source, ‘a manually adjustable regulating valve,
tainer, thereby enabling said biasing means of the four
and a three-way valve having a common port connected
to one end of the ram and other ports respectively con
nected to said regulating valve and source and to said
way valve to shift the same to closure valve closed posi
tion.
return line, means for manually operating said three-way
9. A dispensing machine comprising a ?ll pipe hav
ing a closure valve, control means for said valve biasing
valve to connect the common .port to the return line
the same to closed position, an operating lever asso
whereby the elevator mechanism may move the ?ll pipe
ciated with said control means and movable to one posi
in one direction, a ?uid pressure cylinder for the three
tion overcoming the bias in such means to maintain the
way valve, a control valve having a port connected to 30 closure valve in open position, a weighing scale having
said pressure source and a port connected to the cylinder
a counterpoised beam, a platform, and a rod extending
of said three-way valve, said control valve being operable
from the platform to the beam to transmit the e?ect of
by the movement of said elevator mechanism in said one
material being weighed, said ?ll pipe being positionable
direction to connect the pressure source to the cylinder
over the platform and a container adapted to be placed
or" the three-way valve, thereby to shift said three-Way
thereon, a latch member adjacent said rod and operating
valve to .a position connecting the common line to the
lever and adapted, when said lever is in said one position,
pressure source and thereby moving the elevator mech
to engage and hold the same, said latch member in
anism in the other direction, and a throttle valve in the
cluding a counterweight biased to release said latch mem
connection between the pressure source and the cylinder
her from said operating lever, a support for the counter
of the three-way valve, said throttle valve being adjust
able to vary the time interval between the end of move- ~‘
ment of the elevator mechanism in said one direction and
the start of movement in said opposite direction.
,5. A dispensing machine as set forth in claim 4, With
another adjustable throttle valve in said return line, where
by the rate of movement of the elevator mechanism in said
one direction maybe varied.
6,. A dispensing machine as set forth in claim 4, where
in a normally open valve 'is interposed in series between
the source ‘of pressure and the regulating valve, means
actuated by the movement of the elevator mechanism
in said opposite direction to close said normally open
valve, thereby to arrest the movement of the elevator
mechanism, and means acting sequentially to the closing
weight connected to the scale rod and effective, when
an un?lled container is placed on the platform, to o?set
the bias imposed by said counterweight, said counter
weight thereby preloading the platform, said support being
removed from the counterweight as material deposited in
the container causes the rod to move, thereby to unlatch
the operating lever and enable the control means to close
the closure valve, said ?ll pipe being connectible to a
supply of material to be dispensed, the mass of the
counterweight being adjustable to have a preloading
effect equivalent to the weight of the material discharged
through the ?ll pipe while the closure valve moves from
open to closed position.
10. A dispensing machine comprising a ?ll pipe having
a closure valve therein, control means for opening and
of said normally open valve to open the same and en
closing said valve, said control means being biased to
able the elevator mechanism to continue to move in 55 closure valve closed position, said ?ll pipe being con
said opposite direction, thereby to ,interpose a time delay
in the movement of said mechanism in said opposite di
rection.
7. A dispensing machine as set forth in claim 4, hav
ing a by-pass circuit between the source of pressure
around said regulating valve and to said three-way valve,
a normally open by-pass valve in said circuit, means for
closing said normally open by-pass valve when the ele
vator mechanism begins its movement in said ‘opposite di
' nectible to a supply of material to be dispensed for ?ow
past the closure valve when the same is open, a weighing
scale including a beam, platform, and interconnecting
rod, said beam being adapted to be counterpoised against
a predetermined weight of material and said platform
being adapted to receive a container into which material
is discharged through said ?ll pipe, a latch member hav
ing a pivoted ?nger and a latch lever adapted to hold said
?nger in latching position, adjustable weights on said
rection, whereby pressure is applied through the regulat 65 latch lever biasing it into disengagement with the ?nger,
ing valve, and means for opening said by-pass valve as
a bracket on said interconnecting rod adjacent the latch
the elevator mechanism approaches the limit of its move
lever and supporting said weights when the scale platform
ment in said opposite direction, thereby to accelerate the
receives an empty container thereby to move the latch
rate of such movement.
lever into holding engagement with the latch ?nger, said
‘8. A dispensing machine comprising a ?ll pipe hav 70 counterweights thereby pre-loading the scale, an operat
ing a closure valve therein, a cylinder containing a piston
associated with the ?ll pipe, a rod for the piston extend
ing ‘into the ?ll pipe and connected to the closure valve,
a source of pressure ?uid, a four-way valve, a line con
necting said source to a port of said valve, additional
ing lever for said closure valve control means engageable
with and retained ‘by the ‘latch ?nger when the closure
valve is moved to open position, said operating lever,
75 when so latched, overcoming the ‘bias of the control
2,754,032
movement of the elevator to its upper position to remove
drippings from the tip of the ?ll pipe.
15. A dispensing machine comprising a support in
cluding a base and upright side members, a weighing
scale platform on the base, a scale beam mounted on the
upright members and connected to the platform, a ram
mounted vertically on one of the side members, an ele
vator frame connected to the piston rod of the ram and
10 depending therefrom and into the space between the up
right members, a liquid supply pipe mounted on the
frame and extending forwardly and upwardly therefrom,
a ?ll pipe connected to the
'
the cylinder and piping connections from said source
20 through the control valve to the cylinder, an elevator
valve for the ram and piping connections from the source
through the elevator valve to move the elevator frame
'
'
'
thereby lower and raise the
platform, a governing valve
'25 mounted on the support adjacent the base and adapted
to be operated by the elevator frame when said frame
is in a low position, piping connections from the source
through the governing valve to the control valve for
shifting the control valve to closure valve open position,
30 a latch mounted on the support, a lever connected to the
control valve and engageable with the latch when the clo
sure valve is opened, a normally open valve in the connec
tion between the source of ?uid pressure and the elevator
valve, an arresting valve mounted on the elevator frame
and movable therewith, an adjustable cam track mounted
on the support and adapted to actuate the arresting valve
when the frame moves upwardly, piping connections
from the ?uid source through the arresting valve to close
the normally open valve when the arresting valve is
40 operated by engagement with the track, and means mov
able with the scale beam and platform for tripping the
latch to release the control valve lever, said control valve
being biased to closure valve closed position.
16. A dispensing machine comprising a ?ll pipe having
a closure valve therein, an elevator mechanism for lower
ing and raising the ?ll pipe with respect to a container
to be ?lled, means responsive to the downward move
ment of the ?ll pipe to open the closure valve whereby
material supplied to the ?ll pipe may be dispensed, adjust
able means for moving the elevator mechanism upwardly
in timed relation to the ?ow of material through the ?ll
means to trip the latch when a predetermined amount of
material has been dispensed through the ?ll pipe, thereby
enabling the biasing means of the control valve to estab
currently reestablishing ?uid pressure to the ram through
the elevator valve means and move the ?ll pipe upwardly
an additional distance.
55
means, of means for manually instituting a change of
cam means being
pressure on the ram which will enable the ram to move
elevator mechanism and actuated
downwardly, of means for regulating the rate of ascent 60
drip pain under the ?ll pipe when
and descent of the ?ll pipe, and of means for accelerating
said pipe is raised, and to move the drip pan away from
the rate of ascent after the control valve has moved to
closure valve closed position.
13. A dispensing machine as set forth in claim 11,
characterized by the provision of adjustable means to 65
References Cited in the ?le of this patent
control the magnitude of the ?uid pressure, and means
UNITED STATES PATENTS
?ll pipe supply means when the ?uid
pressure drops below a predetermined magnitude.
2,150,760
Cozzoli _____________ __ Mar. 14, 1939
14. A dispensing machine as set forth in claim 11, 70 2,208,028
Harrington ___________ __ July 16, 1940
characterized by the provision of means actuated by the
2,544,734
2,633,282
St. Clair __________ _\___ Mar. 13, 1951
Tamminga ___________ __ Mar. 31, 1953
1/--pages
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