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0d- 8, 1946'
o‘. L. GARRETSON ETAL
2,408,842
AUTOMATIC CYLINDER FILLING DEVICE
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Fla/4'
Filed June 22, 1942
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2‘ Sheets-Sheet 1
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.F/G.5
INVENTOR
-
T. A. ST: CLAIR, O. L. GARRETSON.
'
.R. OLSON
M/%%OW
Oct- 8, 1946-
o. 1.. GARRETSON ETAL
2,408,842
AUTOMATIC CYLINDER FILLING DEVICE .
Filed June 22, 1942
2 Sheets-Sheet 2
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2,408,842
Patented Oct. 8, 1946
UNlTED STATES PATENT lorries
2,408,842
AUTOMATIC CYLINDER FILLING DEVICE
Owen L. Garretson, Bartlesvillc, Okla., and Theo
dore A. St. Clair, Pontiac, and Andrew R. 01-‘
to Phillips Petro
son, Detroit, Mich, as signers
leum Company, a corpor ation of Delaware
Application June 22, 1942, Serial No. 448,022
20 Claims. (01. 249-63)
1
Our invention relates to automatic means for
?lling enclosed pressure vessels with a volatile
liquid or a gas.
More speci?cally, our invention comprises a
completely automatic system which is of par
ticular utility in the ?lling of lique?ed petroleum
tomer.
Other objects and advantages are to be real
ized from the structure disclosed in our following
gas cylinders. Our assignee company has been
active in the development of a method of dis_
tribution of propane which involves the use of a
small portable cylinder of 20 pound propane ca
pacity, the system in question being well known
to the trade as the “Philgas self service system.”
'In connection with the maintenance of the
above type of distribution system, it has become
2
the human element in attainment of the ?nal
required ?lled weight, thus minimizing the pos
sibility of over?lling of cylinders beyond the per
missible loading density, and hence improving
the safety factor of the service rendered the cus
speci?cation, in which
10
Figure 1 is a full front elevation showing in
part the general disposition of our assembled ap
paratus.
Figure 2 is a side view of the apparatus of
Figure 1.
Figure 3 is a schematic diagram illustrating
incumbent upon the said company to re?ll sev 15 the operation of our invention and in which all
eral thousands of these small cylinders daily in
the operating elements are shown in section.
supplying customers’ requirements. This oper
Figure 4 is an enlarged view of an element from
ation has until now been done manually, and the
Figure 3.
labor cost involved for cylinder ?lling alone has
Figure 5 is a like view of another operating
20
become a quite considerable sum, and is of course,
element from Figure 3.
reflected in the price that customers must pay
Figure 6 is a simpli?ed cross sectional view of
the type valve in the top of a gas container cyl
for their gas service.
In the manual ?lling of these cylinders, the
inder which the structure of Figure 5 is designed
operators have been required to place the cylin as to cooperate with.
ders individually on platform type scales, make
Referring particularly to Figures 1 and 2, the
connection manually between the charging line
numeral It indicates generally a platform bench
and the cylinder, set the scale beam to the de
scale, whose principal elements are the base H,
sired weight, turn on the charging line, turn off
loading platform l2, the balance beam [3 and
the charging line when the cylinder has reached
weights M. Any conventional scale which has
30
the correct gross weight, disconnect and remove
these elements may be adapted to our purpose.
the cylinder. With the automatic device here
Firmly secured to the platform 12 is an up
disclosed, the operators will need only to place
right column member l5, having an arched por
the cylinders on the scales, set the scale beam,
tion [5 extending forwardly over the center of
press a control button and remove the cylinders
the scale platform. Pivotally supported by the
when ?lled. The operations of making connec 35 column member is a diaphragm power unit H,
tion, turning on the gas, shutting off and dis
which is adapted to establish communication be
connecting are eliminated. Watching of the
tween the charging hose l8 and the cylinder to
scale beam or dial is also eliminated, since our
be ?lled, l9. A curved guide piece 20, attached
device automatically shuts oil the ?ow and dis
to upright l5, serves to center the cylinder with
40
connects the cylinder when the correct weight
respect to the power unit l1. Attached to the
shaft 2| of the diaphragm power unit is an auto
has been reached.
It is an object of our invention to materially
matic propane connector and valve 22.
reduce the labor cost per unit ?lled in the opera
Power operated unit I‘! is pivoted by means of
45 pivot pin ll’ on arm 15, which pin passes through
tion described.
It is a further object to improve working con
hole 3! in. portion 30 of the power unit 11. It
ditions in cylinder charging rooms by reducing
will be noted in Figure 3 and elsewhere that hole
the number of manual operations and to simplify
3! is distinctly o? center relative to the center of
the mental operations involved in ?lling cylinders
gravity of the device, the center of gravity ob
accurately to the required gross weight.
viously lying somewhere between 3| and the axis
50
It is an object to further improve charging
of 2|.
room working conditions by eliminating the haz
The general operation of our system is as fol
ard of receiving dehydration burns about the
lows. A cylinder to be ?lled is placed on the
operator’s hands, which hazard has been present
scale platform, and weights I4 suf?cient'to bal
in manual operations heretofore.
ance the desired ?lled cylinder weight are sup‘~
-
It is also an object to remove as far as possible
2,408,842
3
4
plied. By operation of control devices, to be de
scribed fully in connection with the other draw
ings, the diaphragm power unit H is energized
An extended portion 43 of member 3'! is pro
vided with a tapered nose section 49 which makes
sealing engagement with a gasket in the boss of
the cylinder to be ?lled. (The cylinders with
which this ?ller device is to be used are equipped
with air pressure and the propane connector
valve 22 is thus placed in communication with
the cylinder l9. Propane immediately ?ows into
with tire-valve type tap plugs of the sort fully
the cylinder, since the valve in connector 22 is
self -opening upon contact with the cylinder valve.
When the cylinder reaches the predetermined
described in U. S. Patent No. 2,172,311 to R. W.
Thomas, issued September 5, 1939. Figure 6 of
the present case is a simpli?ed view of Figure l
of said Thomas patent.)
Surrounding the member 3"! is a protective
sleeve guide piece 50, bored on two diameters to
provide a iree sliding ?t with respect to member
31. The outside of member
is contoured sim
?lled weight, ovenbalancing of the scale beam
causes disconnection and closing of the cylinder
and charging-line valves.
As hole 3| is off center the top of I‘! will fall
forward away from stand l6 and the connector
50 will rise backward under l6 where 56 will be
out of the way every time 50 is not engaged with 15 ilarly to member 31, having major and minor
part N5 of a cylinder l9.
diameters forming portions 5| and 52. A pin 53
is screwed into piece 50, a portion of the pin being
Referring now to Figure 3, the complete detail
extended into a milled-out slot 54 in one wall of
of all control devices is shown together with the
member 32'. Thus the sliding travel of member
interconnecting piping. In this diagram, the nu
meral |'| again indicates the diaphragm power 20 5% on member 37 is limited and the members are
rendered non~separable.
unit; 23 indicates generally a relay valve for
In the operation of connector '82, a cylinder to
controlling power unit H; 24 indicates a manual
vent valve which serves as the operator’s control
be ?lled is placed on the scale platform with its
to start the ?lling operation; 25 indicates means
valve plug in approximate alignment with the
?lling, and 26 indicates generally an automatic
der guide piece Zil (see Figure 2). The guide
sleeve 58 is held in the uppermost position shown
whereby the ?lling operation is automatically 25 axis of shaft 2! and connector 22, the approxi
mate alignment being had with the aid of cylin
stopped upon attainment of a desired degree of
valve which prevents re-operation of the device
in Figure 5 by grasping with the ?ngers at sur
until such time as the operator again presses the
30 face 5| while locating the cylinder on the scale.
control button on valve 24.
The sleeve is then released, allowing it to drop
The power unit I"! consists of a pair of covers
21 and 28 between which is secured a rubber dia
phragm 29. The lower cover is provided with
a projecting portion 3!) which is drilled at 3| to
provide for mounting on the supporting member
I6 01-‘ Figure l. The portion 30 is also bored to
provide a guide for shaft 2|. A circular bearing
plate 32 is threaded on the upper end of shaft
down, when the reduced portion 52 should enter
the opening in the cylinder valve tap plug. This
assures alignment of the nose-piece 49 with the
tap-plug, so that upon subsequent operation of
the diaphragm power unit, the nose-piece 49, the
pushpin tip 45 and the cylinder valve stem will
be protected from damage which would otherwise
2|, and a spring 33 loads the shaft, plate and 40
diaphragm upwardly. The propane connector
valve 22 is threaded to the lower end of shaft
2| and secured by a locknut 34. Inlet 35 admits
air pressure to diaphragm 29, and inlet 35 on the
connector 22 is provided for connection to the
propane charging hose |8.
Figure 5 illustrates further in detail the con
motor 22, in which the main body portion 3'1
is ‘bored on varying diameters to form a channel
38 having a seating shoulder 39, and successively
smaller channels 40 and 4|. The charging hose
connection 36 is tapped in the side of member
31, in communication with the progressively re~
ket in the cylinder tap plug, establishing sealed
communication between channel 38 and the cyl~
inder interior. Propane will flow into the cylin
der under a differential imposed ‘by the charging
duced channels above referred to. The threaded
A square‘ pushpin 43 having round reduced sec~
tions 44 and 45 ?ts loosely in bore 40. The diag
onal distance across corners of the square sec
tion is greater than the diameter of bore 4|, how-
line pressure so long as the connector 22 is main
tained in engagement with the cylinder tap plug.
The valve core in the cylinder tap plug, having
a fairly weal; spring, will be held open during
?lling by the differential pressure across slug
valve member 4.5, acting through pushpin 43.
The pilot operator 23 of Figure 3 is illustrate;
in enlarged detail in Figure 4. Referring to that
view, a ?exible diaphragm 55 is securely clamped
between the ?anges of body 56 and cover 57, thus
forming two chambers
and 59. A threaded
' opening 69 is provided in cover 51, and one or
ever, and motion of the pushpin in a downward
more vents 6| are provided in body 56. In the
lower portion of body 56 is enhoused a double—
direction is limited thereby. A valve slug 46 of
synthetic rubber, or other resilient material hav
ing the necessary resistance to swelling or de- ~
terioration in propane, is loosely retained in bore
38. This slug has a tapered portion 41 adapted
to make seating engagement with ledge 39 when
pressured from above by the propane charging
line pressure.
-
Upon actuation of the power connector, mem
ber 31 on shaft 2| moves downward within the
guide sleeve and tip 45 of pushpin 43 contacts
the stem of the tire valve core in the cylinder.
When the cylinder valve core reaches the wide
open limit, further motion of the connector will
cause pushpin 43 to unseat slug 46 against the
pressure of propane in the charging hose and in
channel 38. The nose section 49 will meanwhile
50 have contacted and compressed the resilient gas
opening 42 is ?tted with a straight machine
thread to receive the threaded end of shaft 2|
of the diaphragm power unit I‘! (Figures 1 and
2). There is no fluid communication through
opening 42 with any other element of the as
sembly. The shaft 2| is of solid, unbored con~ 60
struction and effectively plugs the opening.
be likely to occur.
acting valve 62, having upper and lower seating
faces 53 and 64, respectively. A hexagonal or
other non-circular section 65 is provided on the
valve member for guiding purposes. The shape
of section chosen here is immaterial, so long as
the valve is well-guided in its chamber 66 and an
75 appreciable ?ow-way around the guiding portion
is afforded.
Resilient seat rings 6‘! and 68 are
2,408,842
5
The function of pipe H8 and valves III; II:
and H3 is to provide two modi?cations of the
invention.
provided, as shown. Ring ‘61 is cemented, vul
canized or otherwise secured to the inserted back
up member 69. Ring 68 is merely inserted
against ledge 18 in the body bore. Spring 1I
loads the valve member toward the upper seat
In the preferred modi?cation valve III is shut, .
there is no flow in pipe H8 and valves H2 and
H3 are wide open and offer substantially no re
and also serves to retain the lower ring. An in—
sistance to ?ow in pipes I81 and I88. In this
let 12 and an outlet 13 are provided in communi
modi?cation the push button 8I starts the opera
cation with chamber 66. Valve member 62is op
tion of the device and valve I88 is wide open and
erated by diaphragm 55 through backup plate 14 10 only closed in an emergency if at all.
In the secondary modi?cation valve II I is open
and stem 15.
Referring again to Figure 3, thevent valve 24
wide and o?ers substantially no resistance to flow
is connected to the opening 68 of the pilot opera
through pipe II8 while valves H2 and H3 are
tor, or may be screwed directly therein, as shown.
shut tight. In this modi?cation push button
The vent valve consists of a body 16 having a
III is never touched, and in fact fitting 16 could
channel 11 in communication with an inlet 18.
be replaced by a simple elbow pipe connecting
In an upwardly extended portion of channel 11, _
pipe I89 to 68, and the operation carried on by
above the inlet 18, is threaded a valve 19 of the
manipulating valve I88.
tire core type. An inwardly ?anged sleeve mem
The top of the gas containing cylinders, such
ber 88 is provided to retain a pushbutton element
as I I4 of Figure 6 may have a valve body II5 se
8|. This element is provided simply to facilitate
manual opening of the tire valve core when such
operation is required. Valve 19 vents to the at
mosphere through clearance between button BI
cured in an opening therein by deposited welding
metal H6. The mode of securing is immaterial,
the important features being that the body II5
contains a tire core valve H1 at the bottom of a
depression I I8 which depression is usually screw
threaded. IA sealing gasket II9 of arti?cial rub
ber, or other resilient hydrocarbon resistant ma
terial is positioned in a groove at the bottom of
rial. The nipple 82 is attached by any convenient
the depression to cooperate with the sealing sur
means, such as locknut 86, to a part of the scale
face 49, or with a connection (not shown) to fit
frame. The resilient disc is secured to the scale 30 in the depression when the container is connected
beam I3 by means of a mounting piece 81 and
to a stove or other appliance (not shown). The
inner surface of depression II8 acts to guide the
threaded retainer 88.
The automatic shuto? 26 consists of a casing
guide sleeve 52 and sleeve 52 in turn guides nose
having its interior divided into two chambers 89
49 to seat on gasket II9. In turn nose 49 guides
and 98 by a diaphragm 9|. Chambers 89 and 98
push pin 45 to contact a valve stem I28 of the
are provided with inlets 92 and ‘93, respectively.
valve H1.
Chamber 98 is also furnished with an outlet 94,
The terms “high pressure” and "low pressure”
communication with which 1s had through a tire
as herein used are relative terms. We have found
valve 95 in channel 98. A pushpin 91 of square
that, with a diaphragm power unit I1 of conven
or other non-circular cross-section and having an 4-0 ient size, a pressure of 10 pounds per square inch
appended back-up plate 98 renders valve 95 oper
is adequate for our purposes, and constitutes the
able by diaphragm 9 I.
“high” pressure herein referred to. For the re
The valve 99 in the piping of Figure 3 is an ad
maining or “low pressure” operation, we have
justable needle valve. Valve I88 is any conven
found 11/2 pounds per square inch to be satisfac
ient type of quick-acting line valve; an ordinary 45 tory. The limiting factors with regard to pres
plug type stockcock with a T-handle is adequate.
sures are that the diaphragm power unit must
Valve 99 is for the purpose of providing a bleed
be furnished with a high enough pressure to pro
or restriction in the associated line; if a large
vide positive sealing between connector 22 and
quantity of systems of identical design were to be
the cylinder tap plug gasket, while pressure at
built, a ?xed ori?ce would be appropriate for use 50 the scale shutoff 25 must not be high enough to
in place of the needle valve. The stop cook or
exert a disturbing force on the scale beam. The
other valve I 88 is simply an emergency shutoff.
actual pressures, of course, depend on the size
The piping consists of a low pressure air sys
and characteristics of speci?c parts employed.
tem, a high pressure air system, and a liquid pro
Having sufficiently described the details of our
55 system to make understandable their construc
pane system.
The propane system consists of a pipe I8I in
tion and to some extent their manner of opera
communication with a liquid propane pump (not
tion, the operation of the complete assembled
shown) and the ?exible charging hose I8 pre
system will now be given, for which reference will
viously referred to. A valve I82 is provided for
be had to Figure 3.
emergency use in case of hose breakage or other 60
The operation of the preferred modi?cation
contingency.
with valves H2 and I I3 open and valve I I I closed
and sleeve 88.
The scale-operated shutoff 25 consists of a nip
ple member 82 having a bore 83, a restricted ter
minus 84, and a closure disc 85 of resilient mate
25
The high pressure air system consists of a sup
ply pipe I83, a continuation I84 and branch I85,
will be described ?rst.
-
With air supplied at suitable pressures to the
connected as shown.
~
1
high
and low pressure supply pipes I83 and I86,
The low pressure air system includes a supply 65
all of the low pressure system will be under pres
pipe I86 having a choke ori?ce, or needle valve
sure up to valve 95. Diaphragm 9! in valve 26
99 therein, pipe I86 branching into pipes I81 and
will be loaded on the under side, allowing valve
I89. Pipe I81 has a valve II2 therein and is con
95 to remain closed under loading of its self
nected at 93 to the shutoff 26. Pipe I89 is con
nected at 18 to the vent valve 24. Pipe I88 con 70 contained spring. The top of diaphragm 59 in
pilot valve 24 will be pressured, holding valve 62
nects the shutoff 26 at 94 to the scale operated
closed
against seating ring 88. Hence the power
shutoff 25 and has two valves I88 and H3 therein.
unit I1 will be unpressured, and shaft 2| and con
Pipes I81 and I88 may be connected by a pipe I I8
nector 22 will remain in their uppermost position.
having a valve III therein, all as shown in Fig
The slug 46 will be in the lower or closed posi
75
ure 3.
>
l’
2,408,842
tion, preventing flow of propane from the charg
ing hose l8.
52 in the cylinder tapeplug recess and press but
ton BI. Emergencydisconnection of the charg
When an empty cylinder has been placed on
the scale and the weights are adjusted to the de
‘sired gross value (cylinder tare weight plus de
sired propane content) the lower portion 52 of
connector guide 50 is dropped into the tap-plug
recess and the out?t is ready for operation. The
scale-operated shutoff 25 will be open; that is,
resilient disc 85 will be held away from nipple 82
due to the unbalanced condition of the scale
his line from the cylinder may be effected at any
time during the ?lling operation by manually
closing valve Illil.
The operation of the secondary modi?cation in
which valves-I l2 and I I 3 are closed and valve I I I
is open will nowbe described.
It is understood that ‘the automatic valve de
vice 25 is necessary only to prevent re-operation
upon opening of shutoff 25 when the ?lled cylin
der is removed from the scale. This device may
beam.
To begin operation of the mechanism, the
be dispensed with if desired, by closing valves
operator presses push-button 8|, which opens
valve 18 and allows the pressure in all parts of
and H3 and opening valve HI and the above
mentioned secondary operation carried on with
the manipulation of valve Hie. Pushbutton vent
the low prewure system beyond needle valve 99
to drop to atmospheric pressure, or substantially
so. It is understood that needle valve 59 has
been pre-adjusted to restrict ?ow from the supply
pipe I06 su?’iciently to prevent maintenance of
any appreciable pressure therebeyond so long as
vent valve 19 is open. The venting of ‘the low
pressure system in the above manner results in
unloading of diaphragm 59 in the pilot operator
23. The valve 62 Will hence rise to its upper po~
valve M is .in this case also not used, or maybe
omitted, line
tion oi.‘ the system is initiated by opening of
valve I and shutoff 25 will te‘mi'nate the opera
tion. in. the normal manner when the cylinder
becomes ?lled suii’iciently to balance the scale.
After operation of the device to disconnect, how
ever, the operator must remember to re~close
sition, admitting high pressure air thereby to the
valve IE8 before removing the ?lled cylinder .froin
the scale, otherwise opening of shutoff ‘25 upon
removal or‘ the cylinder will immediately cause
top of diaphragm 29 in power unit 11. The con
nector 22 will thus be depressed ?rmly into the
cylinder boss or tap plug, causing the cylinder
valve and the slug valve 46 to be opened practi~
cally simultaneously with the establishment of
being connected directly to open~
ing 5G 01‘ ' 6 pilot operator. In this case, opera
re~~operation of the relay or pilot operator 23 and
This presents a hazard
30 hence of power unit I'l.
both the equipment and the personnel handling
pressure-tight engagement of nose-piece £53 with
it. The inclusion of elements 124 and fit‘ in the
the tap plug gasket, all as previously described.
system is, therefore, highly desirable and is rec
Thus ?ow ofpropanc into the cylinder is begun.
It .is to be understood that the push~button 8! ml ornniiended for the sake of safety.
In operation under actual service conditions,
need only be depressed for an instant, since op~
it
been found that one operator can easily
eration of the pilot operator also admits high
handle a battery of six automatic ?lling‘ devices,
pressure air to the top of diaphragm 9| in the
such
the one herein described, with the as
automatic valve ‘28. This pressure in chamber 89
depresses the pushpin 97, opening valve 25. Flow 40 sistance of two helpers to truck the empty and
i'iiled cylinders in and out of the charging room.
is thus established through line I05 and from re
Under average conditions, the output of filled
stricted portion 84 of nipple 82, to the atmos~
cylinders (20 pound propane capacity) from this
phere. The restriction 84 is of greater capacity
battery of six units is 120 cylinders per hour.
than is the needle valve or ?xed ori?ce restriction
Under optimum conditions, this rate has reached
99 (whichever is used) and hence, pressure at all
as much as 145 cylinders per hour.
points beyond 99 will be substantially atmos
The device will continually and consistently
pheric, or a very few inches of 'waterthereabove,
fill .20 pound capacity cylinders (gross weight
as longr as shutoff devices 25 and 26 are both open.
about 42-43 pounds) to within 2 ounces plus or
When the weight of propane in the ?lling cyl
minus from the nominal or theoretical loaded
inder becomes su?icient to balance the scale,
weight. Regulatory bodies having jurisdiction
shutoff .25 becomes closed and back-pressure in
over the rules for loading such pressure vessels
the lines I01, I08, and I09 will build up, re-load—
ing diaphragm 59. The valve member 62 will
require an. accuracy of 1,21 pound (4 ounces) plus
again seat on ring 68, unseating from ring 6?.
or minus from the nominal loaded weight.
Thus the high pressure inlet 12 is closed off and
While a preferred form of our invention has
pressure in lines Hi4 and IE5 and above dia~
been described with considerable mechanical dc
phragms 29 and ill will be vented to the atmos
tail, the scope of our invention is not limited
n."
phere via chamber 58 ‘and vent hole or holes 6!.
The connector 22 will immediately rise, breaking
except as to the scope of the appended claims.
We claim:
1. Apparatus for
cylinders each of said
cylinders having an inlet and a check valve con~
‘trolling
inlet, with
a predetermined sand
i weight of ?uid, comprising in combination
er weighing means, fluid dispensing line
ing; said
shutoff 25 will be opened.
Connector 22 is raised and I‘! being pivoted off
center at IT’ will fall forward and place part 22
back out of the way under I6 so that cylinder I0
may be removed easily.
The above is a description of a complete cycle
of operation. To repeat the operation, it is only
necessary to place the next empty cylinder on
the scale, adjust the Weights, place guide sleeve
cylinders
‘
‘
,
means for
one of said cyl iders so that it is
weighed iy the cylinder weighing means and is
--ed For connection to said ?uid dispensing
l1
connectine' means for co" "acting
line
to said cylind r and. for on
said check valve,
disconnect
1; means urging said connecting7
means away from and out of connection with
said cylinder, power operated means for over
coming said disconnecting means
for con
neoting said ?uid line
said cylinder by said
connecting means, pressure responsive means
2,408,842
normally operative to render said power operated
means inoperative, manually controlled means
for rendering said pressure responsive means in
operative at will, weight controlled means for
rendering said pressure responsive means opera
tive upon the cylinder being filled with the stand
ard weight of ?uid to render said power operated
means inoperative, and means preventing more
than one such operation of said weight controlled
10
for connection to said ?uid dispensing line, con
necting means for connecting said line to said
cylinder and for opening said check valve, dis
connecting means urging said connecting means
away irom and out of connection with said cylin
der, power operated means for overcoming said
disconnecting means and for connecting said ?uid
line and said cylinder by said'connecting means,
pressure responsive means normally operative to
render said power operated means inoperative,
means between any two manual actuations of 10 manually controlled means for rendering said
said manually controlled means whereby random
pressure responsive means inoperative at will,
operation of said power operated means is pre
and weight controlled means for rendering said
vented, said connecting means comprising a check
pressure
responsive means operative upon the
valve controlling ?ow of ?uid from the dispens~
cylinder being ?lled with the standard weight of
ing line, said check valves being Opened by said 15 ?uid, said connecting means comprising a check
connecting means at the time of connection of
valve controlling ?ow of ?uid from the dispensing
said line to said cylinder whereby loss of ?uid
line, said check valves being opened by said con
into the atmosphere is prevented.
necting means at the time of connection of said
2. Apparatus for ?lling cylinders each of said
line to said cylinder whereby loss of ?uid into the
cylinders having an inlet and a check valve con
atmosphere is prevented.
trolling said inlet, with a predetermined standard
5. Apparatus for ?lling cylinders each of said
weight of ?uid, comprising in combination cylin
cylinders having an inlet and a check valve con
der weighing means, a ?uid dispensing line for
trolling said-inlet, with a predetermined standard
?lling said cylinders with ?uid, means for pc
weight of ?uid, comprising in combination cyl
sitioning one of said cylinders so that it is weighed
inder weighing means, a ?uid dispensing line for
by the cylinder weighing means and is aligned
?lling said cylinders with ?uid, means for posi
for connection to said ?uid dispensing line, con
tioning’one
of said cylinders so that it is weighed
necting means for connecting said line to said
by the cylinder weighing means and is aligned for
cylinder and for opening said check valve, dis
connection to said ?uid dispensing line, connect
connecting means urging said connecting means
ing
means for connecting said line to said cyl
away from and out of connection with said cyl
inder and for opening said check valve, power
inder, power operated means for overcoming said
operated means for connecting said ?uid line and
disconnecting means and for connecting said ?uid
said cylinder by said connecting means, pressure
line and said cylinder by said connecting means,
responsive means normally operative to render
pressure responsive means normally operative to
said power operated means inoperative, manually
render said power operated means inoperative,
controlled means for rendering said pressure re
manually controlled means for rendering said
sponsive means inoperative at will, weight con
pressure responsive means inoperative at will,
trolled means for rendering said pressure respon
weight controlled means for rendering said pres
sure responsive means operative upon the cylin 40 sive means operative upon the cylinder being
?lled with the standard weight of ?uid, and
der being ?lled with the standard weight of ?uid,
and means preventing more than one such opera
tion of said weight controlled means between
any two manual actuations of said manually con
trolled means whereby random operation of said
power operated means is prevented.
3. Apparatus for ?lling cylinders each of said
cylinders having an inlet and a check valve con
trolling said inlet, with a predetermined standard
weight of ?uid, comprising in combination cylin
der weighing means, a ?uid dispensing line for
?lling said cylinders with fluid, means for po
sitioning one of said cylinders so that it is weighed
by the cylinder weighing means and is aligned
for connection to said ?uid dispensing line, con
necting means for connecting said line to said
means preventing more than one such operation
of said weight controlled means between any two
manual actuations of said manually controlled
means whereby random operation or said power
operated means is prevented, said connecting
means comprising a check valve controlling ?ow‘
of ?uid from the dispensing line, said check valves‘ '
being opened by said connecting means at the
time of connection of said line to said cylinder
whereby loss of ?uid into the atmosphere is pre
vented.
6. Apparatus for ?lling cylinders each of said
cylinders having an inlet and a check valve con
trolling said inlet, with a predetermined standard
weight of ?uid, comprising in combination cyl
cylinder and for opening said check valve, dis
connecting means urging said connecting means
inder weighing means, a ?uid dispensing line for
away from and out of connection with said cylin
der, power operated means for overcoming said
disconnecting means and for connecting said ?uid
line and said cylinder by said connecting means,
manually controlled means for causing actuation
of said power operated means at will, and weight
controlled means for rendering said power 0p
erated means inoperative upon the cylinder being
?lled with the standard weight of ?uid.
tioning one of said cylinders so that it is weighed I
4. Apparatus for ?lling cylinders each of said
cylinders having an inlet and a check valve con
?lling said cylinders with ?uid, means for posi
by the cylinder weighing means and is aligned
for connection to said ?uid dispensing line, con
necting means for connecting said line to said
cylinder and for opening said check valve, power,
operative means for connecting said ?uid line and
said cylinder by said connecting means, pressure
responsive means‘ normally operative to render
said power operative means inoperative, manually
controlled means for rendering said pressure re
sponsive means inoperative at will, and weight
controlled means for rendering said pressure re
trolling said inlet, with a predetermined standard 70 sponsive means operative upon the cylinder being
weight of ?uid, comprising in combination cylin
?lled with the standard weight of ?uid, said con
der weighing means, a ?uid dispensing line for
?lling said cylinders with ?uid, means for posi
tioning one of said cylinders so that it is weighed
necting means comprising a check valve control
ling ?ow of ?uid from the dispensing line, said
check valves being opened by said connecting
by the cylinder weighing means and is aligned 75
ll
2,408,842
12
means at the time of connection of said line to
inder weighing means, a ?uid dispensing line for
?lling said cylinders with ?uid, means for posi
said cylinder whereby loss of ?uid into the at
mosphere is prevented.
7. Apparatus for ?lling cylinders each of said
tioning one of said cylinders so that it is weighed
by the cylinder weighing means and is aligned
for connection to said ?uid dispensing line, con
necting means for connecting said line to said
cylinder and for opening said check valve, power
cylinders having an inlet and a check valve con~
trolling said inlet, with a predetermined standard in
weight of ?uid, comprising in combination cyl~
inder weighing means, a ?uid dispensing line for
operated means for connecting said ?uid line and
?lling said cylinders with ?uid, means for posi
said cylinder by saidconnecting. means, manually
tioning one of said cylinders so that it is weighed
controlled means for actuating said power oper
by the cylinder weighing means and is aligned
ated means at will, and weight controlled means
for connection to said ?uid dispensing line, con
for actuating said manually controlled. means
necting means for connecting said line to said
upon the cylinder being ?lled with the standard
cylinder and for opening said check valve, power
weight of ?uid to render said power operated
operated means for connecting said ?uid line and
means inoperative.
said cylinder by said connecting means, pressure
11. Apparatus for ?lling cylinders each of said
responsive means normally rendering said power
cylinders having an inlet and a check valve con
operated means inoperative, manually controlled
trolling said inlet, with a predetermined standard
weight of ?uid, comprising in combination cyl
inder weighing means, a ?uid dispensing line for
?lling said cylinders with ?uid, means for posi~
means for rendering said pressure responsive
means inoperative at will, weight controlled
means for rendering said pressure responsive
means operative upon the cylinder being ?lled
with the standard weight of ?uid, and means pre
venting more than one such operation of said
tioning one of said cylinders so that it is weighed
weight controlled means between any two manual 4 ,
actuations of said manually controlled means
whereby random operation of said power operated
means is prevented.
by the cylinder weighing means and is aligned for
connection to said ?uid dispensing line, connect
ing means for connecting said line to said cyl
inder and for opening said check valve, power
operated means for connecting said ?uid line and
8. Apparatus for ?lling cylinders each of'said
said cylinder by said connecting means, manually
cylinders having an inlet and a check valve con
trolling said inlet, with a predetermined standard
controlled means for actuating said power oper
ated means at will, weight controlled means for
actuating said manually controlled means upon
weight of ?uid, comprising in combination cyl
inder Weighing means, a ?uid dispensing line for
?lling said cylinders with ?uid, means for posi
tioning one of said cylinders so that it is weighed
by the cylinder Weighing means and is aligned for
connection to said ?uid dispensing line, connect
ing means for connecting said line to said cylinder
and for opening said’check valve, power operated
means for connecting said ?uid line and said cyl
inder by said connecting means, pressure respon
sive means normally rendering said power oper
ated means inoperative, manually controlled
the cylinder being ?lled with the standard weight
of ?uid to render said power operated means in
operative, and means preventing more than one
such operation of the weight controlled means
between any two manual actuations of said man
ually controlled means whereby bouncing or tee
tering of the weighing means cannot cause ran
dom operation of said power operated means.
12. in apparatus for ?lling cylinders having a
connection opening and a ?rst check valve con
trolling said opening comprising in combination
a stand, guide means on said stand whereby one
means for rendering said‘ pressure responsive
of said cylinders may be aligned with said con
means inoperative at will, and weight controlled
means for rendering said pressure responsive 4C nection opening in. a ?lling position, a‘ power op
erated connector head connected to said stand,
‘ means operative upon the cylinder being filled
a connector member slidable in said head from
with the standard weight of ?uid.
9. Apparatus for ?lling cylinders each of said
cylinders having an inlet and a check valve con
trolling said inlet, with a predetermined standard
weight of ?uid, comprising in combination cyl
inder weighing means, a ?uid dispensing line for
?lling said cylinders with ?uid, means for posi
tioning one of said cylinders so that it is weighed
by the cylinder weighing means ‘and is aligned
for connection to said ?uid dispensing line, con
necting means for connecting said line to said
cylinder and for opening said check valve, dis
connecting means urging said connecting means
an extended position of connection to said co
nection opening of said cylinder when said cyl~
inder is in said ?lling position to a retracted
position, a sleeve‘ slidable on said connector
member and adapted to enter said connection
opening on said cylinder to position the con
nector member for connection to said connection
opening, a ?uid line in communication with said
connector member supplying ?uid for ?lling said
cylinder, connecting means, a- second check valve
controlling flow of ?uid from said fluid line, said
?rst and second check valves being opened by
said connecting means at the time of connection
of said line to said cylinder whereby loss of ?uid
away from and out of connection with said cyl
inder, power operated means for overcoming said
disconnecting means and for connecting said
?uid line‘ and" said cylinder by said connecting
into the atmosphere is substantially prevented,
manually controlled means for rendering said
pressure responsive means inoperative at will, and
weight controlled means for rendering said pres
member into said extended position.
13. An apparatus for ?lling cylinders having a
connection opening comprising in combination a
stand, guide means on said stand whereby one
means in said head urging said connector mem
ber into said retracted position and power op
means, pressure responsive means normally ren
dering said power operated means inoperative, 65 erated means in said head urging said connector
sure responsive means operative upon the cylinder
76 of said cylinders may be aligned with said con
being ?lled with the standard weight of ?uid.
nection opening in a ?lling position, a power
10. Apparatus for ?lling cylinders each of said
operated connector head connected to said stand,
cylinders having an inlet and a check valve con
a connector member slidable in said head from
trolling said inlet, With a predetermined standard
weight of ?uid, comprising in combination cyl 75 an extended position of connection to said con
nection opening of said cylinder when said cylin
13
der is in said ?lling position to a retracted posi_-,
tion, a sleeve slidable on said connector member
and adapted to enter said connection opening on
said cylinder to position the connector member
for connection vto said connection opening, a fluid
line in communication with said connector mem
ber supplying ?uid for ?liing said cylinder, means
in said head urging said connector member into
14
at will, a second check valve controlling ?ow of
fluid from the dispensing line, said ?rst and
second check valves being opened by said con
necting means at the time of connection of said
line to said cylinder whereby loss of fluid into the
atmosphere is prevented.
17. Apparatus for ?lling cylinders each of said
cylinders having an inlet and a check valve con
trolling said inlet, comprising in combination a
said retracted position and power operated means
?uid dispensing line for ?lling said cylinders with
in said head urging said connector member into 10 ?uid, means for positioning one of said cylinders
said extended position.
.
so that it is aligned for connection to said fluid
14. An apparatus for ?lling cylinders having a
dispensing line, connecting means for connecting
connection opening and a ?rst check valve con
said line to said cylinder and for opening said
trolling said opening comprising in combination
check valve, positive mechanical spring discon
a stand, means whereby one of said cylinders 15 necting means urging said connecting means
away from and out of connection with said cylin
may be aligned with said connection opening in
a ?lling position, a power operated connector
der, power operated means for overcoming said
disconnecting means and for connecting said
?uid line and said cylinder by said connecting
tion of connection to said connection opening of 20 means, pressure responsive means normally
said cylinder when said cylinder is in said ?lling
rendering said power operated means inopera
position to a retracted position, a sleeve slidable
tive, and manually controlled means for render
on said connector member and adapted to enter
ing said pressure responsive means inoperative
said connection opening on said cylinder to posi
head connected to said stand, a connector mem
ber slidable in said head from an extended posi
will.
i
.
tion the connector member for connection to said 25 at 18.
In an apparatus for ?lling cylinders having
connection opening, a fluid line in communica
a connection opening controlled by a ?rst check
tion with said connector member supplying ?uid
valve recessed in said opening and having a
for ?lling said cylinder, a second check valve con
thrust operated valve opening member in said
trolling flow of ?uid from said ?uid line, means
opening, a connector comprising a connector arm
for opening said ?rst and second check valves at
having a fluid passage therein, a thrust operated
the time of connection of said line to said cylin
second check valve in said passage, a push pin
der whereby loss of ?uid into the atmosphere is
slidable in said passage and projecting therefrom,
substantially prevented, means in said head urg
said push pin being so disposed as to operate
ing said connector member into said retracted
both' of said check valves together upon move
position and power operated means in said head 35 ment of said arm, a guide sleeve slidably splined
urging said connector member into said extended
to said arm and constructed and disposed to
position.
enter said opening to direct said push pin for
15. An apparatus for ?lling cylinders having a
movement against the operating member of said
connection opening comprising in combination a
?rst check valve, and means to reciprocate said
stand, means whereby one of said cylinders may 40 arm into and out of connection with said cylinder
be aligned with said connection opening in a ?ll
comprising a connector head pivoted eccentri
ing position, a power operated connector head
cally for tilting movement, said head having a
connected to said stand, a connector member
chamber, a diaphragm in said chamber, means
slidable in said head from an extended posi
supplying ?uid pressure to move said diaphragm
tion of connection to said connectionopening of
in one direction, and spring means urging said
said cylinder when said cylinder is in said ?lling
diaphragm in the opposite direction, said arm
position to a retracted position, a sleeve slidable
being connected for said reciprocating movement
on said connector member and adapted to enter
by said diaphragm and for sliding movement
said connection opening on said cylinder to posi
relative to said head.
tion the cormector member for connection to
19. In an apparatus for ?lling cylinders hav
said connection opening, a ?uid line in com
ing a connection opening controlled by a ?rst
munication with said connector member supply
check valve recessed in said opening and having
ing ?uid for ?lling said cylinder, means in said
a thrust operated valve opening member in said
head urging said connector member into said
opening, a connector comprising a connector arm
retracted position and power operated means in 55 having a ?uid passage therein, a thrust operated
said head urging said connector member into said
second check valve in said passage, a push pin
extended position.
.
slidable in said passage and projecting there
16. Apparatus for ?lling cylinders each of said
from, said push pin being so disposed as to op
cylinders having an inlet and a ?rst check valve
erate both of said check valves together upon
controlling said inlet, comprising in combination
movement of said arm, a guide sleeve slidably
a ?uid dispensing line for ?lling said cylinders
splined to said arm and constructed and dis
with fluid, means for positioning one of said cyl
posed to enter said opening to direct said push
inders so that it is aligned for connection to said
pin for movement against the operating member
?uid dispensing line, connecting means for con
of said ?rst check valve, and means to recipro
65
necting said line to said cylinder and for opening
cate said arm into and out of connection with
said check valve, positive mechanical spring dis
said cylinder.
connecting means urging said connecting means
20. In an apparatus for ?lling cylinders hav
away from and out of connection with said cylin
ing a connection opening controlled by a ?rst
der, power operated means for overcoming said
check valve recessed in said opening and having
disconnecting means and for connecting said 70 a thrust operated valve opening member in said
fluid line and said cylinder by said connecting
opening, a connector comprising a connector arm
means, pressure responsive means normally
having a ?uid passage therein, a thrust operated
rendering said power operated means inopera
second check valve in said passage, a push pin
tive, and manually controlled means for render
slidable in said passage and projecting there
ing said pressure responsive means inoperative 75
2,408,842
‘
15
‘
16
from, said push pin being so disposed as to opsupplying ?uid pressure to move said diaphragm
erate both of said check valves together upon
in one direction, and spring means urging said
movement of said arm, a guide sleeve slidably
diaphragm in the opposite direction, said am
splined to said arm and constructed and disposed
being connected for said‘ reciprocating movement
to enter said opening to direct said push pin for 5 by said diaphragm and for sliding movement
movement against the operating‘ member of said
relative to said head.
?rst check valve, and means to reciprocate said
arm into and out of connection with said cylinder
OWEN L. GARRETSON,
comprising a connector‘ head, said head having a
THEODORE A. ST. CLAIR.
chamber, a diaphragm in said chamber, means 10
ANDREW R. OLSON.
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