US2065829A - Liquid dispensing apparatus - Google Patents

Description

Dec 29, 1936. M. c. SCHWAB a 6 LIQUID DISPENSING APPARATUS Filed Oct. 27. 1- 4 5 Shaw-Sheet 1 v Dec. 29, 1936. M; c. SCHWAB Y 2,065,829 LIQUID DISPENSING APPARATUS 7 Filed Oct. 27, 1934 s Shoots-Sheet 2 M. c. SCHWAB 2,065,829

LIQUID DISPENS ING APPARA'i'US Filed Oct. 27, 1934 5 Sheets-Sheet 3 Dec. 29,1936.

M. C. SCHWAB LIQUID DISPENSING APPARATUS Filed Oct; 27. 1934' 5 ShoetsSheet 4 Dec. 29, 1936. Q sc 2,065,829

LIQUID DISPENS ING APPARATUS Filed 001:. 27, 1954 5 sheets sheeft 5 We, se. 29, 193 1 2,065,329

UNITED STATES PATENT OFFICE 2,065, 29 LIQUID DISPENSING APPARATUS Martin C Schwab, Chicago, 111. Application October 27, 1934, Serial ldo. 750,392 25 Claims. (Cl. RIF-214) This invention ,relates to improvements in liqthrough the entrapped liquid before to uid dispensing apparatus, and more particular-- the container, thus removing foreign bodies from ly to improvements in .such apparatus wherein the entering air and affording means whereby liquids may be extracted from containers of va-. medicaments and antiseptics in either liquid or;

rious types without contamination from air or solid form may be introduced for sterilizing the 5 gas necessarily admitted to the container when washing liquid and the air passing therethrough;

extracting liquid therefrom, and, while the inthe provision of an improved liquid dispensing venticn has been illustrated and described as inapparatus of the character described which is a corporated in a structure for removing liquids unitary structure adapted to be secured to an 1, from containers for the purpose of subcutaneous opening of a container for liquid and including or intravenous injections, it will be understood Part wh c m y be readily Separated forester!- that the invention may be employed in conneclizing the liquid dispensing apparatus after the tion with other containers, and, therefore, finds same has been employ draining a 0 a wide industrial field of utility. tainer; the provision of an improved liquid dis-.

It is well understood by those skilled in the pensing apparatus in which a washing chamart that in the treatment of various diseases by her is provided for entrapping foreign bodies intravenous or subcutaneous injections, the inwhich may enter through an air stream to be troduction of liquids Ior this purpose is dangerwashed; and the provision of such an apparaous to the patient, owing to the possibility of tus which, when applied to a container, coopforeign matter entering the liquid stream in its erates with a portion of the container to aflord path from a container to the patient, and, in a sediment chamber in the container itself remy co-pending application, Serial No. 698,544, mote from the point of extraction of liquid from filed November 17, 1933, now Patent No. 2,010,417, said container; and the provision of a liquid disgranted August 6, 1935 I have disclosed a numpensing apparatus of the character referred to her of devices which may be employed for exwhich is relatively simple in form and is capatracting liquid, from a container and, at the b e of man facture at a 10W e0 same time, permitting air, gas or other subh foregoing and Such other j ts and 8 stances to enter or' be introduced into the same vantages as may appear or be pointed out as through a porticn'of the liquid contents of the this description proceeds are illustrated in the container so that this entering air, gas, or other accompanying drawings, in which:

substance is washed. However, inasmuch as'the Figure 1 is a fragmentary, Vertical. s on entering air is washed-by a portion or the li'q- 'view of the device or this invention;

uid oi the container which is not excluded from Figure 2 is a horizontal, sectional view taken the remaining portion of the liquid, there reon theline 2-2 of Figure l,. 0 k 8 in t d mains adanger or foreign particles, sediment rection indicated by the arrows; 85 and thelike, being stirred up in the liquid and Figure 3 is a horizontal, S o l V ew taken getting into the stream of liquid flowing from on the line 3-3 of Figure 1, looking in the di-' the container. In the present invention, I have rection indicated by h 'a w provided an improved means which prevents the Figures 4, 6, and .'l are iragmentary,=vertical,

ortion of the liquid which performs the wash; sectional views oi alternative forms or this ining function from coming into contact with'the vention;

liquid being extracted from the container. Figure 5 is a horizontal, sectional view, taken The principal objects and advantages of the on the line 5-! of Figure}. 0051;! in-the dipresent invention reside in the provision of an r lon indi ate by th w Y improved liquid flow apparatus which may be Figure 8 is a sectional view of a valve member; attached to liquid containers, glass bottles, Jars Figures 9 and 10 are sectional views illustratand the like, such as are now commonly used ing further modifications oi the invention;

on the market, for extracting the liquid con- Figures 11, 12 and 13 are Sragmentamseetents of such containers; the provision of an tional and elevational views, respectively, oijiuran improved liquid dispensing apparatus wherein ther alternative toms of this invention. -means is provided for initially trapping a por- Referring now more particularlyito the drawtion of the liquid contents of a container, exings, and'flrst to Figure 1, the liquid dispensing eluding such liquid from further contact with device of my invention is shown in positionlon a the remainder of the liquidcontents oi the concontainer C inverted and ready for extraction of tamer so that air or gas may be admitted liquid irom the container. 'lhiscontainerc has 5? a body portion 5, and a neck 6 having the conventional external screw threads 1 which, in shipment, serve to receive a screw cap, not shown, for sealing the container. V

The dispensing apparatus includes a casing 8 preferably formed of a moldable material, such, for example, as metal, glass, bakelite, hard rubber or the like, and is formed, preferably, generally cylindrical, said casing having a chamber 8 for liquid, said chamber having an enlarged opening at one end formed with screw threads II complemental to the screw threads 1, so that the same may be applied to the neck of the .bottle or other container 1. Where the device is to be applied to other containers, 2; suitable connecof the same with the container, the air inlet.

ports ll admitting air to the casing at I6 ad- .Iacent to the wall: 7 7

, The threaded opening in the casing 8 receives a liquid dispensing structure comprising an outer tubular member ll having a partition 18 whose perimeter I9 is tapered so as to snugly fit the tapered portion l3 of the threaded opening in the casing 8. said tubular member l1 extending outwardly from saidcasing 8, and, when applied to a container as shown in Figure 1, the outer open end 20 of the tubular member I! is located adjacent to the wall 2| of the container which, when the container is in an upright position, would be termed the bottom.

Within the chamber 9 on the partition l8 and extending axially thereof a tubular portion 22 is provided having an axial duct or passageway 23 communicating with an internal liquid discharge tubular member 24, the latter extending through the tubular member I! andlhaving an opening 7 through the wall thereof as indicated at 25. This opening is adapted to receive liquid from the container for discharging the liquid therefrom and is located at a.convenient point beyond the parti-' tion I8 so as to drain most of the contents of the container when in the position shown'in Figure 1. It will be understood that, in the position shown in Figure 1, the opening 25 is a sufflcient distance above the'partition so that any sediment or foreign bodies which may collect above the partition in the neck 6 of the bottle or container C will not pass out through the opening 25.

It will be understood that the taperedrportion I! may be threaded, or, if desired, either this portion and the aperture l2 may be tapered, or

either or both portions provided with threads.

However, in the, arrangement shown in the .drawings, the tubular-portion 22 isexternally threaded for engagement with the threaded opening l2 in the wall ll of the casing 8, and the outer end of the tubular portion 22 is formed with a nipple to which a rubber hose, metal pipe, or the like, may be attached for conveying liquid to an injecting needle or for any other purpose, surgical, industrial or otherwise.

Between the end of the neck 6 of the bottle "or container and the outer surface of the partition desired to introduce a m through the inletfport I42 l8 there is inserted a washer or gasket 22 so that, when the dispensing device is threaded onto the bottle, an air-tight seal will be formed between the neck of the bottle or other container and the in Figure 1, whereupon some of the liquid con-- tained in the container will flow downwardly through the tubular member l1 into-the washing chamber 9. "Thetubular member I! has its opening 20 presented at a point at a distance from the bottom wall 2i so that a'predetermined amount of liquid will drain into the washing chamber '9 up to, approximately 'the'level indicated by the dotted line 28. The predetermined amount of liquid thus extracted from the container passes through the tubular portion l1 into the washing chamber 9 through a port 29 provided in the tubular member l1, this port being preferably located in a position substantially opposite to .that of theair inlet discharge 16 in reference to the axial line through the tubular portion 22.

It will be understood that the rubber hose shown attached to the nipple 26 will have a flow control means, such, for example, as a clamp, or other means of controlling flow therethrough. Upon releasing such'a clampfrom the rubber hosefliquid flows by gravity through the inner tubular member 24, such liquid entering at the opening 25. -When the level of the liquid in the container '0 falls belowthe opening 25,, the flow of liquid through the tubular member 24 ceases, and, for the purpose of this invention, the container may then be considered as drained'of its useful contents. Air, or, as the case may be, gas, passing through the inlet port l4 discharges into the liquid contained in the wash chamber 9, passes through this liquid and thus has foreign bodies removed therefrom, the air or gas thence pass-' ing through the aperture 29, into the tubular member I1, where it discharges and expands, or,

as it may be termed, explodes at the opening 20 abovethe level of liquid in the container.

It will be observed that, for certain purposes, I may provide an auxiliary inlet 30 controlled by a valve 3| for introducing air, gas, or antiseptics into the chamber 9, and I also may provide a drain 32 provided with a valve 33. In normal operation, neither of these last mentioned auxil-.

iary attachments are required, but may become useful inthe event of the device becomingiairbound, where heavy or relatively viscous liquids are to be-dispensed.. I i

It will be observed that, in the event that it is edicament, antiseptic or other material into the wash chamber amen, for example, as carbolic acid orubichloride of mercury, in liquid or solidfform in desired quantity, such material may" introduced Referring now to Figured, modified am v01' the invention shown in 1',"2 an'd' 3 is illustrated, and, inQthejform' of"the; 'invention' thus shown in Figures 4 and 5,"the containerc casing 8:1, as at 35, and

I 80, and the stem 38 vided with one or more inlet ports Ila, and, .to.

this extent, said casing 8a is similar to the casing 8 shown in Figure 1.

To simplify the manufacture for commercial purposes, the liquid dispensing tubular member and air inlet portions thereof may be composed oi! the partition 34 wedgingly engaged with the secured in position by the engagement of the neck 8 with a washer 38, stem portions 31 and 38 extending from opposite sides or the partition, the stem 31 being in threaded engagement, as at 38, with a wall of the casing extending into the container C similar to the tubular member I! in Figure 1.

The stem portions 31 and 38 are provided with a central bore 48 which forms the liquid discharge passageway and communicates with the interior oi the container by a transverse bore 4|.

Air or gas is admitted through the wash-chamber oi! the casing 80. from the discharge portion of the port l4a' through one or more apertures 42 in the stem portion 31, said apertures 42 communicating with longitudinal bores 43 which extend from the apertures 42 to the outer free end of the stem 38, thus, as shown in Figure 4, establishing communication with the upper portion of the inverted container.

In the form or the invention shown in Figures 4 and 5 it will be observed that manufacturing or the same is conveniently'performed by first molding the partition and stem portions as a unit and then drilling the various passageways. Both of the forms of the invention shown in Figures 1 to 5, both inclusive, are readily disassembled for the purpose or sterilizing the same. For example,

if it is desired to sterilize these two forms of the invention, the partition and-tubular members ll and 22 of Figure 1 are removed by unthreading 410 which I .ing 38a at the desired point in the container.

and 38 are removed 'uid discharge the tubular member 22 from the opening l2, and, similarly, the partition 34 and stem portions '31 from the casing 8a. This permits these elements to be placed in a sterilizer and subjected to boiling water, or its equivalents, for cleaning. It will be observed that the absence of sharp corners andblind apertures facilitates the circulation of a cleaning fluid throughout the parts of the device during such sterilizing operation.

Referring now to the form of the invention shown in Figure 6, which is a modification of the form of the invention shown in Figure 5, the partition 34a is cast or otherwise formed with a stem 31a, the stem being relatively eccentric with respect to the partition and provided with a liqopening 38a which is substantially concentric with the axial line through the partition 34a and with respect to the axial line through the casing 8aof the wash chamber. The lower end of the stem 31a may bereduced in size, as indicated at 38a, and externallythreaded, as at 48a, for engagement with the casing 8a.

31a is extended-on the other side of the partition 34a and isiormed with a shoulder The stem terminates the liquid discharge open- The stem 3111 then extends, as indicated at 42a, to provide air discharge 43a'above the level or the liquid in the container, the passageway 44a for air having a connection 45a with the wash chamber on. the other side oi the partition 34a. It will be seen that inthis form. of the invention the construction or the dispensing member :is

75 -simplifled so that it may be inserted or removed,

ber 45 out of the port weight to overcome liquids, trouble may be is a substantially unitary structherein being substantially,

which are in common use and on the market today, and these containers generally are of about a quart size. However, in some instances containers are of larger or smaller size, and I have, therefore, provided a modified form of this invention for employment in containers of any size.

One form of the dispensing apparatus-which is adapted for use in containers, irrespective of size, but which ordinarily have the same neck size, is shown in Figure '1. In this former the invention the casing 44 is provided with a wash chamber 45to which air or gas may be admitted through the port 48 below the level of entrapped liquid in said wash chamber. v

In this form of the invention the casing -44 at 41, with the neck 48 of a container 49.

The dispensing conduit and the air-or gasinlet conduit are arranged in substantially concentric relationship, the liquid discharging or dispensing conduit 58 being a substantially straight bore may be in threaded engagement, or otherwise, as

wall of the wash chamber 45,'and a gasket 55 is interposed between the bottle neck and the partition 53 to form a seal at this point.

- The partition"53 is carried by the outer tubular member 58 forming the air or gas inlet to the container from the chamber 45, said tubular member 58 being' provided with apertures 51 adjacent to the stem -5l within the chamber,

, and further provided with apertures 58 at the outer end of said tubular member 56. The outer end of the tubular member 55 is provided with a wall 58 aperturedto receive the projecting portion 88 of the liquid discharge tube 58, and has a wedging engagement at-tbis point with said tubular member 58. The inner end of the tubular member 58 is in threaded engagement, as at may be readilyseparated when removed from the casing for sterilizing.

In the operation of this form of the invention, when the casing 44 is first applied'to the bottle, and the sameis inverted,- liquid completely fills the chamber 45 andtubul'ar member 58, and enters the't'ubular member 58,,the entrapped air 7 in said tubular member 58, either escaping-from the 'same into the container or bottle above. the the liquid level therein. or being compressed in the discharge tubular portion 58. Ordinarily, it might appear thatliquidwill rise from the cham- 45. However, inasmuch as the size of the tubular me to permit the exhaust upwardly or and the downward flow through the passageway 58 oi the column or liquid, with liquid is of 'suflicient I the inertia of liquid contained in the column defined by the spacebetween the tubular members 58 and 58. air entering the port and through the liquid inthe wash-chamber 45 ailordsa continuing now or liquid from the container downwardly ihroughthetubular'memberfl.

Under some conditions. with relatively viscous her 58 is such as in startins.

fluid downwardly through the passageway 58,

inasmuch as the air contained therein finds difllconditions and thus start the liquid column flow- I the liquid discharge passageway 58.

ing downwardly in the passageway 58, I may provide a plug valve member 62 (shown in Figure 8) controlling the passageway 58, said plug valve member having a T-shaped passageway 63, and the casing 64 of said valve being provided with a bleed opening 65. When the valve is in. the position shown in Figure 8, liquid entering the tubular member 58 at the top thereof, upon inverting the bottle, causes the air to escape at the bleed 65. As soon as liquid appears at this aperture, the operator rotates the valve to the right,'as viewed in Figure 8, so as to close the bleed- 65 and place the passageway 83 in position to discharge liquid from the lower end of When flow of the liquid commences in the passageway 58, it will continue to flow until the valve is either closed by a complete rotation to" close the passageway 58 or until the level of liquid in the contamer falls below the openings 66 in the outer end of the tubular member 58.

1 In all of the forms of the invention described, the spaces indicated at 61 between the tubular members and the neck of the bottle serve as sediment traps, it being observed that any liquid drawn off from the container is taken from such a distance above the bottom of the sediment trap that sediment cannot pass out of the trap into the liquid discharge conduit.

Referring new to the form of the invention shown in Figure 9, I provide the container 68 having a neck 69 and having threaded engagement at 18 with a casing 1I-of the dispensing device.

The dispensing device comprises a tubular member having the portions .12 and 13, the former. extending into the container, and the latter passing through the wash chamber 14 and having threaded engagement at 15 with an aperture in a wall of the casing 1|. Air and/or gas is admitted to the wash chamber through the inlet port 18.

'The tubular members 12 and 13 which are substantially in alignment are formed with apartition 11 having wedging engagement at 18 with the cylindrical wall of the casing 1|, and a gasket 19 is interposed between the adjacent end of the neck 69 of the bottle and the partition 11 so as to form a seal at this point. 7

It will be observed that the tubular member 12 is provided with a by-pass 88 which lies within the tubular member 12 and is in communication with the wash chamber 14 at 8|, and at its other end is in communication with the interior of the container to which the device is applied, as indicated at 82. It is preferred that the connection 82, when the container is inverted-as shown in Figure 9, be below the inlet of liquid to the top of the tubular member 12 so that during dispensing of the liquid from the container the weight of liquid in said passageway 12 flowing out will overcome any tendency for liquid to flow back from the point 82 to the point 8|.

-Air entering the passageway 16 rises through the liquid contained in the wash chamber 14, thence through the by-pass 88 and into the container,' permitting liquid to flow downwardly through the tubular members 12 and 18 for draining the container.

Referring now more particularly to Figure 10,

there is provided the washing chamber 84 in the closing cap or casing 85, the closing cap having engagement with the neck 88 of a bottle 81, or

the like, similarly to the other forms of the invention.

The liquid dispensing member is designated 88,

and is provided with a central bore 89 which extends into the bottle and is provided with an opening 98 for receiving liquid from said bottle or other liquid container. The opposite end of the member 88 is in threaded engagement, as at 9I, with a wall of the casing, and the partition 92 is provided for .sealing the opposite end 0 the casing toform the wash chamber.

In order to permit air to pass from the wash chamber into the container, the member 88- is provided adjacent to the passageway 89 with one or more air ducts 93 which communicate at 94 with the interior of the wash chamber and discharge air at 95 adjacent to but below-the opening '98 when the device is in the position shown in Figure 10. By arranging the relative sizes of the passageways 89 and 93 air does not become trapped in the passageway 89 but may pass upwardly into the container, thus allowing liquid to flow downwardly through the passage way 89. Air is thereupon drawn into the wash chamber from the air inlet 96 and passes through the ports 94 and ducts 93 into the container.

It will be observed that, similarly to the other forms of this invention, sediment or other foreign bodies present in the liquid of the container are allowed to settle in the space 91 between the neck of the bottle and the adjacent wall 'of the liquid dispensing device. Owing-to the arrangement of the openings 93, it is impossible for" foreign bodies to rise from the wash chamber 7 intov the container, and thus liquid discharged from the container 'will be found to be free of all contamination due to sediment or other foreign bodies.

Referring now more particularly to the form of the invention shown in Figure 11, I provide an adjustable liquid dispensingconduit 99 which extends into the container I88, whose neck portion MI is connected at'I82 to the casing I83 having a wash chamber I84 deflnedby the walls I85 and I86 and partition.-,l81. The conduit 99 and container I88 for, as it may be said, raising or lowering the open end I II of the conduit 99 in the container when the latter is inverted as shown in Figure 11.

Liquid entering the conduit 99 may be conveniently discharged therefrom through an outlet I I2 located exteriorly of the casing I83, thence to a flexible conduit H3 and an injection needle Ill.

Within the liquid discharge conduit 99 and arranged substantially axially thereof, I provide an air inlet conduit H5, whose lineal dimension issuch that it may. extend beyond the opening III and beyond the opposite end of the liquiddischarge member 99. A suitable packing member H8 and retaining nut Il1 therefor may be provided, which permits relative axial adjustment 1 of the members 89 and H5.

" It will be understood that axial relative admay be raised again.

justment of the members 93 and H5 is thus permissible, or independent axial adjustment thereof with respect to the casing I03 and container I as desired. a

If desired, a suitable washing fluid may be introduced through air port H8 into the wash chamber I04. Air or gas admitted through said port I I8 may, where desired, pass through a connection H9, preferably flexible, between said chamber to the air inlet conduit H5. Under these circumstances, any air or gas entering port H8 becomes thoroughly washed before reaching the container I00 through passageway H5.

If desired, upon first inverting the container, a predetermined quantity of the contents thereof may be introduced into the chamber I04 as the washing fluid by inserting the needle H4 into the port H8, it being understood that air entering with such liquid is washed and passes out at the port I20, the flexible connection H8 being temporarily disconnected.

when the desired quantity of liquid is trapped in chamber I04, the connection H9 is again applied, and upon extraction of liquid, the air, to satisfy the withdrawal of liquid, enters at port H8, passes through liquid contents of chamber I04, is washed, thence passes through connection H9 and passageway H and to the container. However, by lowering the conduit H5, if this member has not entrapped enough liquid upon inversion of the assembly, liquid may be discharged therethrough to the chamber I04 through the connection HB'and the port I20, discharging the air through the port H8.- When the chamber I04 has been filled, the conduit H5 Referring now more particularly to the form of this invention shown in Figure 12, it will be observed that the tubular liquid discharge con-' duit I2I-, corresponding to the liquid discharge member 50 of, say, Figure '7, is axially adjustable within the air inlet conduit ,member I22, which latter, while having partition I23, and being sealed at I24 in washchamber I25, yet is provided with a packing I26 and packing nut I21, thus permitting adjustment ofthe liquid discharge conduit I2I within a-container I28, for controlling the quantity of liquid discharged therefrom through said conduit I2I.

For industrial purposes, the various forms of my invention may be installed as desired, one structural embodiment for such purposes being illustrated in Figure 13.

In Figure 13, a container I30 for liquids from which it is desired to exclude impurities, foreign bodies, dust' and the like, is provided at I3I with p a filling opening, which latter is normally sealed either of the plug or gate type.

when the containerhas liquid therein to be eventually dispensed therefrom.

The container I30 is provided with a main outlet control valve I32 of any conventional form, The casing I33,

- however, of said control valve I32, is so constructed as to permit of attachment thereto of the various liquid washing devices of the present invention, generally indicated at I34 in Figure 13, having liquid drain conduit I34a.- For example, should the form of the invention shown in Figure 11 be employed, of course, when the casing I03 is secured to valve casing I33, the tubular members 99 and H5 are retracted until the plug or gate valve I32 is moved to open position, whereupon the tubular members 99 and I I5 may be extended into the container I30 to the desired position through the open valve.

ber and/or the liquid discharge passageways-in all of the forms of the invention shown; that is to say, if desired, where certain liquids are to be handled, the inner and/or outer surfaces 1 the tubular members may be lined with acid-resisting material, such, for example, as a glass lining or the like, so that while ordinarily the employment of a glass tube may be undesirable because of its fragileness, it can be employed where reinforced by a tubular or other wall member constructed of bakelite, metal, or the like.

Having thus describedmy invention and illustrated its use, what I claim as new and desire to secure by Letters Patent is:

1. In a liquid dispensing device. for combination with a primary liquid container, a casing having means for attaching the same to said container and affording'a chamber for liquid, said chamber having an air inlet at one end below the normal level of the liquid in said chamber which is positioned for directing and, during operation, discharging the air through the liquid in said chamber and a partition at the opposite end thereof, a.conduit extending from said chamber through and having an opening beyond said partition, and a second conduit passing through said chamberand partition.

2. In a liquid dispensing device for combinatipn with a primary liquid container, a casing having means for attaching the same to said beyond said partition, and a second conduit passing through said chamber and partition, and

means on said container adjacent an opening of the container for attaching said casing.

3. In a liquid dispensing device for combination with a primary liquid container,-a casing affording a, chamber for liquid, said chamber havingan air inlet at one end below the normal level of the liquid in said chamber which is positioned for directing and, during operation, discharging the ,air through the liquid in said chamber and a partition at the opposite end thereof, a conduit extending from said chamber. through and having an opening beyond said partition, and a second conduit-v passing through said chamber and partition and having its point of communication below the partition, and means on said casing for suspending and supporting the same adjacent to an opening oLthe container, said second conduit opening into a container to which the casing is attached above the point of communication of said first mentioned conduit.

I 4. In a liquid dispensing device for combina* tion with a p ary liquid container, a casing having means fo upporting the same, from said container and having a chamber for liquid, a partition located at one end of said chamber, means adjacent to saidpartitionfor connecting said casing to the container for liquid, a conduit ex-- to: v

30 tion between the latter and said container, an

tending from-said chamber past said partition for establishing communication between the container and said chamber, a liquid discharge conduit extending through said chamber and partainer having anoutlet, a dispensing cap or closure for said outlet, said cap or closure including a casing having an inlet'for air positioned below the normal level of the liquid in said casing during operation, directing and discharging the air through the liquid in said casing, a liquid dis,- pensing passageway extending into said container for conducting liquid therefrom through said casing but out of contact with the liquid contents oi said casing, and a partition for isolating the contents oi" the container from the contents of said casing when the container is inverted for dispensing.

6. In combination with a container for gravitationally dispensing liquid, a casing having means ior supportlngthe same from said container and havinga chamber for liquid, a partiair inlet to said chamber positioned below the level 01' the liquid in said chamber during normal gravitational dispensing of the liquid from said container tor-directing and discharging the air through the liquid in said chamber, an outlet from said chamber connected with said cone tainer, permitting replacement oi the liquid dispensed by theair' passing through said chamber. a connection past said partition between the chamber and said container, and a liquid discharge conduit irom said container passing through said partition and chamber,

'7. In combination with a container for, liquid,

a casing having means for supporting the same .tween the chamber and said container and opening into said container beyond said partition, and a liquid discharge conduit from said container passing through said partition and chamber.

8. In combination with a container for liquid,

'a casing having means for supporting the same from said container and having a chamber for liquid, a partition between the latter ;and said container, an air inlet to said chamber positioned in relation to the liquid in said chamber for directing and discharging the air through the liquid in said chamber, a connection past said partition between the chamber and said container,

and a liquid discharge conduitirom said container passing through said partition and chamber and which may be extended adjustably above the level of liquid in said container.

9. In combination with a container for liquid, a liquid dispensing device including a casing connected adjacent to an opening in the container and having a chamber, a partition between said chamber and container, an air inlet to said chamber, a liquid conducting passage past said parti tion forming a connection between said chamber and said container for supplying a predetermined quantity of liquid to said chamber from said container in an inverted position of the. latter, and an independent liquid discharge conduit passing through said partition and chamber.

10. In combination with a container for liquid,

a liquid dispensing device including a casing connected adjacent to an opening in the container and having a chamber, a partition between said chamber and container, an air inlet to said chamber, a connection past said partition between said chamber and said container for supplying a predetermined quantity oi liquid to said chamber from said container in an inverted position of the latter, and an independent liquid discharge conduit passing through said partition and cham- Y ber, and communicating with said container below said connection when the container is inverted.

a liquid dispensing device including a casing connected adjacent to an opening in the container and having a chamber, a partition between said chamber and container, a connection past said partition between said chamber and said containerfor supplying a predetermined-quantity of 11. In combination with a container for liquid,

liquid to-said chamber from said container in the inverted-position of the latter, an inlet for air or gas to said chamber below the level of liquid therein, and an independent liquid discharge' conduit passing through said partition and chamber.

12. In combination with a container, a casing having means for supporting the same from said container and having a chamber tor liquid, a partition between the latter and said container, an air inlet to said chamber below the normal level of the liquid in said chamber which is positioned for directing and, during operation, discharging the air through the liquid in said chamber, a connectionpast said partition between the chamber and said container, and a liquid discharge conduit from said container passing through said chamber independently thereof, said liquid discharge conduit having connection with the container above the level' of liquid in said chamber.

13. In a device of the character described, in combination, a container having an outlet opening, and a dispenser closure for said opening,

means on said closure whereby a predetermined quantity of the contents of said container may be' trapped in said closure upon inversion of .said container, means on the closure for dispensing the contents of said container independently of the liquid in said closure, and means for excluding theentrapped contents 01' said closure from contact with the remainder oi! the contents of said container as they are dispensed from said container.

14. In a device of the character described, in combination, a container having an outlet opening, and a dispenser closure for said opening, means on said closure whereby a predetermined quantity of the contents of said container may be trapped in said closure upon inversion of said container, means on the closure for dispensing the contents of said'container, and means for excluding the entrapped contents of said closure from contact with the remainder oi: the contents of said container. as'they are dispensed theretainer and discharging the same through the entrapped contents of said closure. l

from, and means for admitting air to the concasing adapted to be connected to a container for fluid, a connection on said casing terminating into the liquid or said container during operation tor conducting a predetermined quantity of liquid from such container to said casing to form an air washing liquid and forming a communication therebetween, an outletfor discharging liquid leading directly outwardly from such container but out of contact with the liquid contents of said casing, and a passageway for discharging atmospheric air through the liquid in said casing.

16. In a device of the character described, a casing adapted to be connected to a container for fluid, a connection on said casing terminating into the liquid 01 saidcontainer during operation for conducting a predetermined quantity of liquid from such container to said casing and forming a communication therebetween, an outlet for discharging liquid leading directly outwardly from such container but out of contact with the liquid contents of said casing, and a passageway for atmospheric air to said casing, said passageway being arranged to discharge air" below the level of liquid in said casing.

- 17. In a device oi. the character described, a casing adapted to be attached to a container; for liquid and having a connection extending into said container, whereby, when the latter is inverted during operation, a predetermined portion of the liquid contents of said container enter said casing, means for admitting air to said casing below the level or. liquid in said casing, and means for extracting liquid from said container independentlyoi the liquid in said casing.

18. In adevice of the character described for draining liquids from containers in combination with a container having an outlet and adapted to be inverted for discharging liquid directly therefrom, means for entrapping a portion of the liquid of the container in the inverted position of said container in the liquid entrapping means and for excluding the remainder of the liquid of the container from said means, and meansfor admitting air or gas into the container including means for passing and discharging the air through the thus entrapped liquid before passing into said container, said outlet being independent oi said liquid entrapping means.

19. In a device of the character described, a casing adapted to'be attached to a container for liquid and having a connection extending into said container so that, when the same is in- -verted, a predetermied portion oi the liquid contents of said container may flow into said casing and be trapped therein, an outlet from the container forming a direct outward passage for dispensing the liquid contents thereoi, said outlet passing through said casing but excluding the liquid flowing therethrough from contact with the liquid contents of said casing, and a vent in said casing through which air or gas may .enter and flow through the liquid contents of the casing and then into the container above the level of liquid contained in saidcontainer.

20. In a device of the character described, a casing adapted to be attached to a container for liquid and'having a connection extending into said container so that, when the same is inverted, a predetermined portion of the liquid contents of said container may flow into said casing and be trapped therein, said connection .being arranged to prevent the return flow oi liquid trapped in said casing into said cofita hier, an

outlet from the container forming a direct and continuous passage for dispensing the liquid contents thereof, said outlet passing through said casing but excluding the liquid flowing therethrough from contact with the liquid contents of said casing, and a vent in said casing through which air or gas may enter and flow through the liquid contents of the casing and then into the container above the level of liquid contained in said container.

21-. In a device of the character described, a casing adapted to be attached to a container for liquid and having a connection extending into said container so that, when the same is inverted,

a predetermined portion of the liquid contents of said container may flow into said casing and be trapped therein, a partition disposed between said container and easing, an outlet from the container forming a direct and continuous passage for dispensing the liquid contents thereof, said outlet passing through said casing but excluding the liquid flowing therethrough from contact with the liquid contents of said casing,

and a vent from said casing into the containeroutlet passing through said casingbut excluding the liquid flowing therethrough from contact in said casing through which air or gas may enter and pass into the liquid of said casing and then pass into the container.

23. In a device of the character described, a

casing adapted to be attached to a container ior liquid and having a connection extending into said container so that, when the same is inverted, a predetermined portion of the liquid contents of said container may flow into said casing and be trapped therein, said connection being ar- 1 ranged to prevent the return flow of liquid trapped in said easing into said container, an outlet from the container forming a direct out ward and continuous passage for dispensing the liquid contents thereof, said outlet passing through 'said casing but excluding the liquid flowing therethrough from contact with the liquid contents of said casing, and a vent in said casing through which air or gas may enter and flow through the liquid contents of the casing into the container.

24. In a device of the character described, a casing adapted to be attached to a container for liquid andhaving a connectiorf'extending into said container so that, when the same is inverted,

a predetermined portion of the liquid contents of said container may flow into said casing and be trapped therein, a'partition disposed between said container and casing, an outlet from the container forming a direct outward and continuous passage for dispensing the liquid contents thereof, said outlet passing through said casing but excluding the liquid flowing therethrough,

from contact with the liquid contents of said casing, and event in said casing through which with the liquid contents of said casing, and a vent air or gas may enterv and includingjmeans to by the container for liquid and having a con-' nection. extending into said container, whereby, when the latter is inverted, a portion of the liquid contents of said container enters or "is retained by said casing, means foradmitting air into said casing below the level of liquid in said casing, and means which is positioned for direct ing and, during operation, discharging the air through the liquid in said casing independent 01' 5 the liquid in the casing for extracting liquid from said container.

MARTIN C. SCHWAB.

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