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Патент USA US2406263

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Aug- 20, 1946.
‘ 2,406,263‘
Filed Dec. 5, 1944
2 Sheets—Sheet 1
Theodore A - ?f-clqn“
Carl F 6l'ever5
BY Andrew Rolson
Aug- 20, 1946-
Filed Dec. 5, 1944
2 Sheets-Sheet 2
Theodore A-Sf'ZClG/r'
Carl F- slevera
BY‘ Andr?VR-Olsom
Patented Aug. 20, 1946
Theodore A. St. Clair, Carl
Sievers, and Andrew
R... Olson, Bartlesville, Okla, assignors to
Phillips Petroleum Company, a corporation of
Application December 5, 1944, Serial No. 566,672
7 Claims. (01. 226-—20.6)
This invention relates to an automatic mech
anism for ?lling enclosed pressure vessels with
a volatile liquid.
A more speci?c, detailed object of the inven
tion is to provide a system which is completely
ing of the cylinders to a ?nal predetermined
weight is accomplished without conscious super
vision by the operator, by reason of the use of
an automatically operating device shutting off
the ?ow of fluid and causing disconnection of
automatic, and of special utility in ?lling lique
the cylinder from the charging head, when the
correct weight has been reached.
The system herein disclosed is related to and
vinvolves improvements upon a similar system dis
purposes and involves the use of a small portable 10 closed in copending application Serial 448,022,
?ed petroleum gas cylinders. The use of these
cylinders has been actively developed as a method
of distributing propane, for household heating
cylinder of about 20 pounds propane capacity.
One such Well known system is the “Philgas self
service system.” '
?led June 12, 1942, for Automatic cylinder ?ll
ing device.
One object of this invention is to provide a
means for ?lling a container with a given weight
In the maintenance of such systems, it has
been an important function thereof to provide 15 of fluid.
Another object is to provide means connected
facilities for re?lling large numbers of these small
cylinders daily, in order to meet the customers’ . with a container by an easy manual operation
and easily actuated to automatically ?ll said con
tainer with a given weight of ?uid and then auto
ually, and the labor cost involved in ?lling alone 20 matically disconnect said container and signal
that said container is ?lled.
amounts to a considerable sum, which cost, of
A speci?c object of this invention is to provide
course, is re?ected in the customers’ price paid
requirements. The operation of ?lling the cylin
ders has in general, in the past, been done man
for such gas service.
a charging head and a power operator therefor
by means of which a gastight connection with the
In manually ?lling these cylinders, the opera
tors have been required to place the cylinders 25 cylinder is automatically effected.
A still more speci?c object of the invention is
individually on platform type scales, make con
to provide a simpli?ed and improved form of
nection manually between the charge line and the
charging head and means for effecting coopera
cylinder, set the scale beam to the desired weight,
tive association of it with the power actuating
turn on the charging line, turn off the charg
ing line when the cylinder has reached the cor
Other and more detailed objects of this inven
rect gross weight, and disconnect and remove the
tion will be apparent from the following descrip
cylinder. For the automatic system herein dis
closed, the operator need only place the cylin
tion of a complete embodiment.
This invention resides substantially in the
ders on the scales, establish a preliminary con
nection between the respective ?lling head and 35 combination, construction, arrangement and rel
cylinder by a simple one hand manual operation,
ative location of parts as will be described in de
press a control button, go on to other work, and
when the cylinder is automatically ?lled and the
?lling apparatus automatically disconnected and
_ tail below.
In the accompanying drawings,
Figure 1 is a front elevation showing the cylin
swung out of the way, return to merely lift the 40 der to be charged, the scales and associated parts;
properly ?lled cylinders off each scale which has
Figure 2 is a side elevational view of the ap
signaled that the cylinder on it is ?lled. The
paratus in Figure 1;
signal is given by the automatic tilting of the
Figure 3 is a schematic diagram illustrating
large area ?at top or other portions of the ?ll
the association of the elements of the system oi’
ing head, which tilting occurs due to gravity upon
this invention and the operation thereof with all
said disconnection. A large number of these
parts in elevation;
container ?lling devices may be used in rows in
Figure 4 is a vertical, central, cross-sectional
a single room with one man rapidly placing cylin-,
view through the charging head and power actu
ders on the scales and pushing the starting but
ton and picking up ?lled cylinders as automat 50 ator;
Figure 5 is a Vertical, central, cross-sectional
ically indicated, no judgment nor adjustment by
view through the relay valve and actuating mech
the operator being needed. The scale beam can
be set to a ?xed weight at the start and never
Figure 6 is a vertical, central, cross-sectional
changed, as the cylinders plus their intended load
always weigh substantially the same. The ?ll 55 View through the valve which prevents undesired
recess in the nipple 38 is a threaded inlet passage
l8’ formed in the sleeve 34. Slidably mounted in
the nipple is a valve stem 42 having mounted on
its inner end a resilient valve member 43. The
valve stem 42 fluted or longitudinally grooved
provides for adequate flow of liquid past it from
the passage 18’ to the point of discharge at the
end face of the head 39. The mouth of the coun
terbore in the sleeve 34 is closed by means of a
nected to the ?xtures 92 and 88. Communication
with the lower compartment 90 is had through
the threaded port 99". Cemented or otherwise
secured to the diaphragm 9i is a backup plate 93
having a ?uted extension 91 extending down
wardly to provide a flow passage therearound.
This extension is adapted to cooperate with a nor»
mally closed spring loaded tire type of valve as~
sembly 95, such as disclosed in the above men“
washer 3?, held therein in any suitable manner, 10 tioned patent. This valve controls a passage in
the lower part of the housing to which is con»
as for example, by means of a snap ring, forming
nected a pipe, as will be explained later, by means
a stop against which the enlarged head 22a en
of the adapter 94.
gages when the charging head unit slides under
The scale beam actuated valve is shown in Fig
its own weight on the push rod 22’, as it is free to
ure '7. Pivotally attached to the beam, as will be
do when released.
seen from Figure 3, is a valve member l3’ having
The relay valve and associated equipment is
mounted therein in a suitable manner, a resilient
shown in Figure 5. It includes a housing com.
seat 85. This seat cooperates with a nozzle 82
prising the parts 55 and 57, which are secured
having a bore 83 of larger diameter than the re
together in sealing relation with respect to the
stricted bore 84 in communication therewith, and
periphery of a ?exible diaphragm 55, dividing the
opening at the seating face or end of the nozzle
adjacent portions of the housing into the lower
82. This nozzle is mounted at any convenient
compartment 53 and the upper compartment 59.
part of the scales, by means of a ?xture 86 hav
The lower compartment is normally vented to at~
ing a threaded engagement therewith for longi
mosphere through several ports 6|. Pressure
?uid is supplied to the compartment 59 through 25 tudinal adjustment with respect to the valve disc
the threaded passage :89’. The upper housing
The system is shown in Figure 3, A pipe Hi3
part 51 is provided with a projection terminating
establishes communication from any suitable
in a threaded boss 60, having a passage there
high pressure source to the relay valve through
through, in which is mounted any suitable form
of valve which is normally held closed by means 30 the connector 12. A suitable pressure for this
source is of the order of 8 pounds per square inch,
of a spring built therein. This valve is of the
and of course, the line I03 may include a suitable
same type as is commonly used in the adapter 22
shut off valve. Low pressure air from another
of the cylinder 19, and is of the so-called tire valve
source, having a pressure of the order of 2 pounds
type, fully disclosed in United States Patent No.
2,172,311. A thimble 16 is threadedly mounted on 35 per square inch, is supplied to an adjustable
the boss 6i! and serves to house a push button
member 80, around which pressure ?uid may
needle valve 99 through the line I06, which like~
wise may include a shut off valve, if desired. The
discharge end of the needle valve 99, which. may
escape to the atmosphere when this member is
be of any suitable construction, is connected by
depressed to open valve 19, as will be described
again later, The housing part 56 has a depend 40 a pipe I09 to the threaded passage I09’, of the
relay valve assembly 23, and to the threaded
ing extension, with a passage therethrough 01
passage 99" of the element 25. The connector
several diiferent diameters. The portion of
13 of the relay valve is connected by pipe [535
largest diameter forms a compartment 66 in
to the connector 92 of the element 26. The con
which a two—way valve member 62 may operate.
This member
a valve 54 at the lower end,~ and 45 nector 88 of this element is connected by pipe I M
to the connector 35 of the power actuator. The
a valve 53 at the upper end. The valve 64 coop
connector 94 of .the element 2B is connected by
erates with a resilient seat 68, controlling the ?ow
pipe I08 to the nozzle tube 82, and includes an
of ?uid from a pipe in communication with the
emergency shutoff valve It!) of any suitable con
connector ‘53 opening into this chamber and a
pipe in communication with the connector 12. A 50 struction. The liquid propane supply source, not
shown, is connected by the line is to the port
compression spring ‘H normally urges the mem
IQ’ of the charging head, and this line may in
her in a direction to unseat the valve 64. The up
clude a suitable shut 01? valve, as will be ob
per end of the compartment 66 is closed by a re
movable plate '58 to which is attached a resilient
In .the operation of this system an empty cyl
valve seat 5?. overlying the area of the plate form 55
inder i9 is placed on the loading platform and
ing the end wall of compartment 65. The re
properly positioned, as previously described, so
silient washer 61 is attached to plate 69 in any
that its valved adapter ‘22 is in position to be
suitable manner, as by cementing, vulcanizing, or
engaged by the charging head, when the power
otherwise. The valve member 62 is of hexagonal
or other cross-sectional shape at the area form 60 unit is pivoted clockwise (as shown in Figure 2)
about its supporting pin 31 from an inactive rest
ing the seat for the upper end of spring ‘H so as
position to an intermediate active position. As
to provide passages therearound. The valve
this operation takes place the conical seating
member 62 has a stem attached to a backup plate
head 39 is moved into the adapter 22, and the
12 engaging the lower face of the diaphragm 55.
The mechanism for preventing repetition of 65 spring loaded washer 4n engages on the end face
of the adapter (see Fig. 8). It will be understood
the recharging operation, or a tendency to re
that at this time spring 33 of the power unit
peat the operation when a cylinder is ?lled and
holds the parts controlled thereby in the ‘position
being removed from the scales. is shown in Figure
shown in Figure 4, and that the sleeve 2! will
6. It comprises a housing having upper and low
er parts, secured together, and clamping between 70 have slid down on the push rod 22’, so that its
head 22a engages the under face of .the Washer
them in sealing relation a ?exible diaphragm 9|.
or closure member 31. Thus as the power unit
The diaphragm SH divides this housing into the
is moved into position the sleeve 2! may have
upper compartment 89 and the lower compart
relative movement on the push rod 22’ by slid
ment 9!). Communication with the upper com
partment is established by means of pipes con 75 ing thereon towards the extension 38. Valve 43
is held closed by the pressure of the liquid pro
pane on the resilient valve member 43. Pipes
i8 and IM are preferably ?exible hose so as not
to unduly restrain the movements of the power
It is assumed, of course, that high and low
pressure is being supplied to the apparatus by
the lines W3 and Hit respectively. High pres
sure air flows up to the closed valve 64 which is
pane liquid supply line 18. The cylinder begins
to ?ll and during the period of ?lling all of the
parts remain in their operated position, as de
When the cylinder is ?lled with liquid in the
proper amount, as determined by the adjustment
of the weights ill on the scale beam 83, the scale
beam will move in a clockwise direction (Fig. 3)
until the valve disc
(Fig 7) closes the re
held closed in the following manner. Low pres l0 stricted port 3d, interrupting the escape of low
sure air bleeds through the needle valve 99 and
pressure air to the atmosphere. As a result,
the branch pipe I09 so as to create such a pres~
pressure builds up in the compartment 59 of the
sure in chamber 59 of the relay valve and charm
relay valve 23%, closing valve 54 against the action
ber 90 of the control element 26 (Fig. 6) as to
of swing ll. Compartment 58 of the relay valve
hold valve 64 seated against the resistance of
' " vented to atmosphere through the port 6|
spring ‘H, and to hold diaphragm ill in the po»
. not interfere with this operation, and any
sition shown in Figure 6, so that the actuator
- ' n‘ pressure air that escapes past the now open
81 for the valve 95 is out of engagement there~
valve 53 during this transitional period can also
with. As previously stated, valve 55 is normally
escape to atmosphere so as not to create any
closed by means of a spring built into it. It is 20 pressure
compartment 53 on the underside of
also helpful to note that with the empty cyl
the diaphragm
Thus valve
is properly
inder 19 on the platform I2, the scale beam i3,
closed cutting off the sup-ply of high pressure air
due ‘to the adjustment of the weights Ill thereon,
from line M3 through line N35 to compartment
will be in such position as to cause the valve
of the element 255, and hence, interrupting the
disc 35 to disengage the end of the nozzle 32.
supply of air under pressure in the upper face
Thus, with the parts in this position it will be
of diaphragm 29 in the actuator ll. Pipes I05
seen that low pressure air is trapped in chain~
and IE4, and chamber
are vented to atmos
bers 59 and fill.
phere past the valve seat 3? and the port 6!, in
To begin ?llir' the cylinder it‘ the operator
an obvious manner. Pressure can therefore
. .
the finger button
build up under diaphragm iii raising the actuator
e nor ally closed valve
(Fig. 5), and
t for valve 95, and permitting it to be closed by
venting chamber
to atmosphere around the
its spring. The venting of chamber 43, in the
finger button. in view of the presence of the
power actuator, to atmosphere through line 104
needle valve
in the low pressure supply line
allows compressed spring
to raise the actuator
let, it will be seen that the pressure in chamber 35 rod Ell’ whose enlarged
22“ engages the
quickly falls to atmospl'ieric pressure, or sub
shoulder between the counterbore sections in the
stantially so, since the flow capacity around the
sleeve 34, due to a clockwise torque (as seen in
?nger button 35'} is greater than the flow capac“
4) around pivot iii (caused by the center of
iiy of the
isted needle valve
The reduc
gravity of 363 being to the right of, and thereby
tion of pressure in chamber 59 allows spring ii 40 having an effective lever arm around the pivot
to iseat valve 5% and seat valve
against the
3 l) which torque always causes said engagement,
Thus communication is estab
so that the sleeve is raised upwardly, disengag
li ‘"ed between the high pro: urc line 1513 and 1' .
the valve stem and actuator 42 from the tire
supplying high pressure air to chamber
valve in the adapter 22 so that the pressure of
the element iii; thmugh ‘the line
As a result
the liquid propane on the valve 63 can seat and
moves downwardly and the valve
seal it. Thus the supply of propane to the cyl
actuator Ell’ opens valve
establishing com
IE3 is cut off. At the same time the power
munication between line H.255 and line Hi8 which
actuator i‘! is de-energized and spring 33 kicks
now open to atmosphere through the restrictel
the charging head 34 upwardly until it clears
p. ‘t
Thus low pressure can escape to at 50 adapter 22 of cylinder [9. The power actuated
ere and not build up a pressure in cham
iii then swings head tilt back out of the way
even though the push button
is only
under it automatically due to gravity and the
entarily actuated, and as a result valve 79
c?set pivot 3|. The position of actuator I"!
y opened for a short time. The high‘ presserve; as a signal to show that the cylinder IQ is
- also ‘?ows from compartment 39 through
?lled and is disconnected. Cylinder iii may be
21'; into the power device ill, building up
removed and a new empty cylinder replaced
nure in the chamber 113 (Fig. Z1) and causing
starting the cycle over again. The sleeve lid is
95 to move downwardly. This move"
then manually moved so that the enlarged head
of ‘the dial
carries the push rod 22'
22”» may slide up into the reduced portion of the
.. .vnwardly until it engages the end of the coun (it) counterbore and
the charging head for the
' the sleeve
after which it causes this
next operation which, of course, is repeated for
to move downwardly compressing spring (ii
each cylinder to be nlled.
and causing the conical head
to engage in
The valve I fit is merely provided to shut oil? the
the cooperating seat of the adapter t2 on the
low pressure air leakage through the nozzle 82,
ider iii (see Fig. 8). As this movement con~
if at any time during the ?lling of a cylinder,
ti hes, the valve e .m
engages the stem of the
it is desired to interrupt the ?lling thereof. The
tire alvc in the adapter
so that full downward
result of the closing of valve Hill is exactly the
movement of the sleeve lid causes valve (3?; to un
2e as the closing of the restricted passage lid in
and engage the upper end of the valve com~
the nozzle.
pertinent it is in, whereby further downward
From the above description it will be apparent
movement of sleeve
is transmitted through
to those skilled in the art that the subject mat
valve fit and stem it? to the stem of the tire valve
ter of this invention is capable of some modi?
in. the adapter 22 forcing said tire valve into
cation, and embodiment in other physical forms,
open position, thereby establishing communica
without departure from the novel subject matter
tion between the empty cylinder Iii and the pro 75 and scope thereof, and we do not, therefore, de
sire to be strictly limited to the embodiment se
lected for purposes of illustration, but rather to
the scope of protection granted us in the ap
pended claims.
What is claimed is:
1. A device as described comprising a sleeve
having a seating member, a valved passage in
said sleeve and seating member, an actuator for
said sleeve having a push rod slidably connected
to said sleeve, and a spring for normally holding
said rod in retracted position.
2. In the combination of claim 1, said actu
ator being pressure ?uid operated having a mem
:ber connected to said push rod for moving it into
pushing engagement with said sleeve.
3. In the combination of claim 1, said sleeve
having a passage therein forming a shoulder and
a ?uid supply line, a charging head constructed
to effect sealing engagement with a container to
be ?lled, said charging head including a valve
connected to said supply line and normally
closed by the pressure of the ?uid therein, a
power actuator for moving said charging head
into sealing relation with the container to be
?lled, means for pivotally supporting said actu
ator, and resilient shock absorbing means for re
straining the movement of said actuator in the
sealing direction of said charging head.
6. A charging head for ?lling containers with
fluid under pressure, comprising a power actu
ator having a push rod, a sleeve slidably mount
t ed on said push rod, a passage in said sleeve, a
nipple mounted in said passage, a valve member
cooperating with said nipple to normally close
said passage under the pressure of ?uid therein,
said push rod having an enlarged head operat
and a spring biased engaging member mounted
ing in said passage for engagement with said
20 on said nipple.
7. In the combination of claim 6, said sleeve
4. In the combination of claim 1, said actuator
having a counterbore of different diameter to
being pressure ?uid operated, said sleeve having
form a shoulder and said push rod having an
a. passage forming a shoulder, and said push rod
enlarged head engageable with said shoulder.
having an enlarged head for operation in said
passage and engaging said shoulder upon de-en 25
ergization of said actuator.
5. In an apparatus for ?lling containers with
fluid under pressure, the combination including
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