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Патент USA US2408157

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Sept. 24,1946.
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2,408,156
uEAsURING TRAP cHAuBER WITH BARoM'ETRIc cUToFF
Filed llarch l0, 1945
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THOMASA L. TlTus
INI/miran.l
_ 727
Patented Sept. 24, 1946`
2,408,156
UNI-TEDSSTATES PATE-NT 'OFFICE *
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MEASURING TRAP CHAMBER WIr-i1 ». ’l
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BARQMETRICCUTÜFF
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I Thomas L. Titus, Cheyenne, Wyo.;a“ssignor~to The .
r.Wyott Manufacturingr Company', Cheyenne,k
Wyo., a corporation of AWyoming
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,'Appliçanonmarçh _10, 1945.,..senà1 N9. »ns1-.97.9
’ ’ 3 Claims.
1
(Cl. Z22-¿437)
.
’I_’his invention relateslto improvements in liqé
uid dispensing devices.
”
tlinzbsidy. the lposition
`
2
.
of the lower end thereof
can be -adjusted.
It is the object of this invention to produce al
simple, substantial and eiiicient device for dis
`
Secured‘to the‘upïper end of pipe I5 isha cup
IS whichxmay be made from rubber, eitherv nat
pensing liquids in predetermined quantities.
ural or .syÍ-ítheti'c,> or any other suitable material.
The neck Il, off .the bottle or of any other liquid
container, is inserted into cup I6 andthe wall of
y,Another object of this invention is to- produce
a device that will operate quickly an'dnwhich will
be of such construction that the quantity‘of liq
theliatter forms an airtight sea1 about the bottle»
neck, as c’learly’shown in Figure 1.
A vent Iß'ex'tends' >through the upper wall of the
uid dispensed will be very accurately measured. `
Another object of this invention is to- producey
a device for the purpose indicated which cannot
be used for abstracti'ngemore than the measured
quantity of liquid atleach operation.
body ILI. The outer vsurface ofthe valve chamber
wall is threaded-fas indicated at I9. An end clo
sure yZIîis held in place below the valve chamber
A still further object of the invention is to
byrn'eans ofua threaded sleeve whose lower
produce >a compactdevice that shall be capable 1,5 wall
end> has an inwardly extending flange 22 that
.of being manufactured in apleasing and orna
engages _in a corresponding rabbet in the closure.
The end closure has a downwardly extending tu
, Having called attention to the various objects
bular .hub 23. Positioned at the lower end of the
of the invention, the invention will now be de
valve- 4chamber Wallis a flexible diaphgram 211
scribed in detail and for this purpose reference 20 which may ber made of rubber or of any other
will `be had t0 the accompanying drawing in which
flexible material, either some suitable plastic or
theÍ invention has ‘been illustrated'in'its preferred
one ofthe many so-called synthetic rubbers.
form,- and in which:’ '
' `
mental
form.>
`
.
,
l
This diaphragm must be quite flexible and elastic
`,Figure 1 is a vertical diameter section taken
on line I-I, Figure k2;
'
i
' Figure 2 is a side elevation of the device shown
and the material mustbe selected .so that it will
25
not >be Yaffected bythe liquid being dispensed.
_In the drawing, diaphragm 2'4 has been shown*
as of considerable thickness, but this is merely
in Figure
Figure31;
isa fragmentary
'
, section similar to that
for- conveniencein drafting, and `'explaining vthe in
shown in> Figure l, but shows the parts to an en
vention. 'I‘he‘diaphragmr should` b'e asthin as
larged scale and a valve in sealing position;v
30 consistent .with strength and the contemplated
Figure 4 is a fragmentarysection similar to that
mode of operation. Extending through the hub
shown in Figure 3, but shows the valve in fullyV
23 is a discharge tube 25 whose lower end is pro
opened position;
vided with rlaterally Yextending wings 26. The
-Figure 5 is a fragmentary _section intended to
upper end. of .thisltulbe isîclosedand has a threaded
illustratein a clear manner the lost >motion means 35 extension or stud 21 for a purpose which~ will
which will be hereinafter referred to; Iand
presently appear. Directly beneath the upper
Figure 6 is a view similar to Figure 5, but shows
end wall of ,the dischargerftube, there is a groove
a slight modification.
_
281er the reception of the Aedge of the diaphragm
24. vThe ldiaphr’agm is 4provided with a central
a support which may be of any construction; at 40 openingthat is `smaller than the bottom diameter
In the drawing reference numeral I Il designates
the end of the support is a body I I which, inthe
of groove 28 so that when itis positioned as shown
in Figures F2, 3 and 4, the tension exerted by the
drawinahas been shown `as formed integral with
the support Iii, but which maybe, and prefer
diaphragm .willform a tight seal'between it and
-the dispensing tube. The outer edge of .thevdia
ably is, made from >a separate piece secured to
the support -in any suitable manner. The under 45 phragmfis vclamped between the lower end of the
valve chamjb'er'wall andthe upper surface of the
surface of >body I0 has .a circular depressionl2
end» closure as lclearly- shown in the drawing. Se,
that forms 'avalve chamber. The upper Wall
cured to the upper end> of the’ discharge tube is a
of the. body has "a, .frustoconical depression lI3
cup' having an upwardly extending wall 29. The
in its upper surface >and from »the vertex ofthis 50 bottoniof the `cup has'been designated by refer
depression anllf opening LI4 extends through the
ence numeral >31)'and'extending Adownwardly from
wall ,and- into ’communication V»with the valve
the .underfsurface (thereof _isa flange 3I. The cup
chamber. A fill tube I5 is( threadedly mounted
is providedwith. a central- openingl for the recep
in’` opening I!! and projects downwardly into the
valveì'chamber. >»13er `rotating the pipe relative to
55
tion offtheltlireaded studi] and is held .in posi
tion by a «.nutï3l2. 'The _end closure is `provided
2,408,156
with an inwardly extending ledge 33 that has an
annular concave surface 34 positioned beneath
the diaphragm and directly beneath the flange
3| on the bottom of the cup. The discharge tube
4
valve. The weight of the liquid in the cup will,
of course, be counterbalanced or made ineffec
tive when the cup is surrounded by liquid as in
, Figure 1.
is provided with a plurality of openings 35 posi- -»
tioned directly above groove 28.
In the above description a lost motion con
nection has been shown and described which is
simple and effective for the purpose under con
It will be observed from the drawing that the
sideration, but it is to be understood that this is
weight of the discharge tube and the cup are soVmerely illustrative of means for this purpose and
related to the diaphragm and other parts that
vthat it may be replaced by some equivalent lost
they will normally assume the position shown 10" motion construction that will effect a seal of the
in Figures l and 3 with the flange 3l resting on
intake tube before the valve is opened and a
the upper surface of the diaphragm. , Since the ' ' closing Yof the valve before the intake is unsealed,
diaphragm is very flexible and. quite thin, the , thus assuring that no liquid will be supplied to
weight of these parts will bend it downwardly
into engagement with the concave upper surface
of ñange 33, as shown most clearly in Figure 5_.
When the parts are in normal position-,like that
shown in Figures >l and 3, the plane 35 of the ¿
the valve chamber at any time when the seal be
tween flange 3| and the diaphragm is broken.
Attention isïagain- called to the fact that the
diaphragm has been shown to an exaggerated
thickness and it is to be understood that it is to
upper edge of the cup wall is spaced a short dis-be as thin as can practically be used so as to
tance from the lower end of the fill tube l5, as 20 afford as little resistance towards flexure in re
It
will
be
observed
that
due
shown in Figure 1.
sponse to the weight of the parts as possible.
to the fact that the diaphragm is bent down
Having described the invention what is claimed
wardly into engagement with the concave sur
as new is:
face '3d when the weight of the parts rest on the
1. A device for dispensing liquid in measured
diaphragm the seal between flange 3l and the 25 quantities, comprising, a body having a valve
upper surface of the diaphragm will not be bro
chamber, provided with a fill opening and a vent
ken until the cup and the flange 3l have moved
in its upper wall, a ñll tube in the fill opening,
upwardly a distance‘at least equal to the distance
the fill tube proiectingrbelow the upper wall sur
between plane 3B and the bottom of pipe I5.
face of the chamber, an airtight liquid con
This construction forms a lost motion connection 30 tainer above the body in communication with the
that permits the fill tube and cup to be moved a
ñll tube through an opening in'its bottom, the
short distance before the seal is broken. The
lower end wall of the chamber having a dis
purpose of this is to effect a seal between the
charge opening, a discharge tube extending
liquid in the cup and the lower end of the fill tube
through the discharge opening, the upper end of
before the seal is broken between flange 3l and
said tube being closed, a flexible diaphragm hav
the diaphragm. As soon as the cup moves up
ing a central opening through which the dis
to a position where plane 3B is in engagement
charge tube extends, means for attaching the
with the lower end of tube I5, or slightly above
outer edge ofthe diaphragm to the wall of the
it, no liquid can escape from the sealed container
lvalveV chamber, the wall of the discharge tube
and therefore when the parts' aremoved up
having an opening above the diaphragm, a cup
wardly in the position shown in Figure 4, the liq
secured to the upper end of, the discharge tube,
uid in the valve chamber is free to escape, and
below the lower end of the 'fill tube, the under
during this escape period no further liquid will
be supplied. When the measured quantity of
liquid has been discharged and operator relieves
the Vpressure on the lower end of the discharge
tube, the latter falls, due to the action of gravity
and before the plane 36 passes below the end of
the’ñll tube l5, a seal is effected between’the
diaphragm and flange 3|. The construction just
described assures that no liquid can-be surrepti
tiously removed by the expedient of carefully and
slowly moving the valve to closed position,
' In Figure 6 a slightly modified form of con
struction has been shown in which the flange
3|, instead of being made entirely of metal is
made in part of a resilient flexible material Bla
which bends when it comes in contact with the
diaphragm and thus gives a lost motion eñect
A surface of the cup having an annular flange posi
tioned to engage the upper surface of the dia
phragm to form a seal, the parts being so propor
tioned and related that when the flange is in nor
mal sealing position the plane of the upper edge
of the cup'will be spaced a short distance below
the loweren'd of `the fill tube, the cup being mov
able upwardly to a point where the plane of its
upper edge is above the lower end of the ñll tube
before the seal between the flange and the dia
phragm is broken, whereby air is prevented from
` entering the container until the flange returns
to sealing position.
2. A device for dispensing liquid in measured
quantities, comprising, a body having a valve
chamber provided with a fill opening in its upper
similar to that obtained by the construction 60 wall, an airtight liquid container positioned above
the body, the opening in the upper wall being
shown in Figure 5.
formed in part by a fill tube that projects down'
This device is intended to be connected with
wardly into the valve chamber, the container
an automatic counting mechanism that indicates
communicating with the chamber through the
the number of times the discharge valve has been
moved upwardly and therefore an operator will c
be charged with the total quantity of liquid, even
if the valve chamber is only partly full at the time
the valve is opened.
Y
Thefeature just described is a safety feature
of great importance where expensive liquids are
being dispensed as it discourages attempts to
cheat and in fact makes' it impossible to do so.
It will be observed that added to the weight-of
the discharge tube and the cup is the weight of
the liquid in the cup which serves to set the 75
ñll tube, the lower wall of the chamber having a
discharge opening, a discharge valve comprising
a >discharge tube having its upper end closed,
extending through the discharge opening, a flex
ible diaphragm having a central opening for the
reception of the discharge »tube and connected
therewith by a-watertight seal, the wall of the
discharge tube having openings positioned above
the diaphragm, means for effecting a seal be
tween the wall of the chamber and the outer
5
2,408,156
edge of the diaphragm, and a cup connected with
the upper end o-f the discharge tube, the cup; opening upwardly and positioned beneath the ñll
tube, the under surface of the cup having a cir
cular ñange adapted to engage the upper surface
of the diaphragm to form a seal, the relationship
of the parts being such that when the cup and
discharge tube are supported from the dia
phragm, the lower end of the ñll tube will be a
short distance above the plane'of the upper end 10
of the cup, the upper wall of the _valve chamber
' having a vent.
extendingvfrom the tube to the Wall of the valve
chamber in sealing relation with both, the wall
of the discharge tube having at least one open-v
ing positioned above the diaphragm, the upper
wall of the valve chamber having an Yopening
positioned within the area of the cup, a fill p-ipe
threadedly engaging the wall of the last named
opening, the interior of the sealed container
being in communication with the valve chamber
through the ñll pipe, the under surface of the
cup having an annular flange for engagingY the
.upper surface of the diaphragm, the parts being
3. A device for dispensing liquid inv measured
so related that when the cup and discharge tube
quantities from a sealed container having a dis
are supported from the diaphragm, the top of the
charge opening in its under side, comprising, in 15 cup will be a short distance below the lower end
combination, a body having a valve chamber in
of the ñll tube, and will be above the lower end
its under surface, ¿removable end closure for
of the fill tube before the seal between the flange
the chamber, the end closure having an opening,
on the cup and the diaphragm is broken, whereby
a discharge tube in said opening, the upperend
no liquid will ñow from the sealed container
of the tube being closed, ay cup supported from 20 while the valve is open.
'
the upper end of the tube, a flexible diaphragm
THOMAS L. 'I‘ITUS.
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