US2650013A - Apparatus for delivering liquids to receptacles - Google Patents

Description

I 1953 J. G. NILSSON 2,650,013

APPARATUS FOR DELIVERING LIQUIDS TO RECEPTACLES Filed April 26, 1946 l9 w I /0 Patented Aug. 25, 1 953 UNITED To EJISIT O I CE AEPARATUS' 'FOR"DELIVERING LIQUIDS T0,. RECEPTACLES" 3 Claims. 1

This invention relates-'to apparatus for delivering liquids to receptacles-such as jars,- bottles'or the like. More-particularly, the invention relates to -such apparatus comprising a filling=tubenand a valve adapted to closethe outlet end of said; tube by relative longitudinal movement of said tube and said valve and-having a'stem extending. longitudinally through said filling tube and being provided with an air vent channel. In the-use of such apparatus the receptacle-can be raised into. engagement with the filling tube to. force same upwardly 'so that said filling'tube islifted from the immovable valvewhereby liquidflows outof said tube and into the receptacle: Thereby air and foam will escape from. the receptacle and be discharged through thehollow valvestem. When filling receptacles withcertain liquids it is inconvenient to effect this discharge-by suction as a violent foaming and loss'of liquid willtake place. On the other hand, it. isdesirable to remove foam that will be produced when filling the receptacle and to prevent liquid and foam entering. the valve stem from flowing back when the filling operation has terminated- It is an object of the present invention to remove. said drawbacksand to make provision for said improvements.

Still another object of the invention consists in the provision of improved means for-controlled venting of the receptacle in dependence on its longitudinal movement relative to the-filling tube when commencing and terminating the fillingoperation.

With these and other objects not specificallymentioned in view, the invention consists in certain constructions and arrangements which will be hereinafter fully described and then specifically set forth in the claims hereunto appended.

Theannexed drawing illustrates. one form of construction of the invention.

Fig. l is a vertical sectional view of the apparatus;

Figs. 2 and 3 illustrate. steps of operation of apparatus; and

Fig. 4 is a cross-sectional view taken on the line IVIV of Fig. 1.

Referring to the drawing, a' spout 2 is secured to an open reservoir I for liquid. Into the lower end of the spout 2 isslidably inserted a nozzle consisting of atube 3-provided with a'flange 24. The tube 3 forms a valve member engageable with an upwardly facing valve seat on a head 4 at the bottom end of a stemi: which extends longitudinally through the tube and spout 2;

and :is' providedwith av central channel 0. At=its upper endcthe stem-Eris. insertediinto an uprightr'l' which is supported. by the spout. 2 at posts 8= secured to said spout. The stem 51is securedito the: upright l'by means of Ta U-shapedkeymem her 9 driven into lateral slots-23 in the'stem. and upright.

On the upperrendpf. the-stem -5.-i is slidably mounted a. reversing valve: member it: which is actuatedby a compression spring. I3 and supported'by two pins M2. The pins: 14.: areslidably inserted into holes 29 inTthe upright! andsecured to: the head Id of. a sleeve: Itislidably mounted onthe stem: 5. The sleeve 16 is by. means of a: post H supported by the. tube 3; upon which-it rests'iundert the. influence of the spring it; Into: the upper end of the'stemiiii isscrewed'a plug. i3- the head. I91 ofwhich forms an abutment forrthe spring 13. After removal of this plug the channel 6-*of thestem. 5*:will be accessible for cleaning, and furthermore, the stem can then; after'resmoval. of the member 9.; be. pulled out-0ithe up right 11 and the sleeve-16; At its. upper end: the. stem5' has apair of outlet openings Zili-andapair. of suction" openings 25.; bothxpairs' being spaced apart: longitudinally of the stem 51 and connected to the channel 6. The reversing. valve member I2is interiorly provided with anannular groove zziforming'a suction passage andibein'g adapted toregister" with the openings 2:! andfbeing' con:- nected to :aaflexible hose 2 3'1Whl0h" is connectedto a source illiproducing a constant suctionefiect;

In the operation-of the apparatus asillustrated the receptacle A is raised by any suitable means (not shown) to engage the-flange Meet the tube 3 and lift said tube against: the action: of thespring. I 3 While the head: 4" remains immovable so that. the bottom endofthe tube. 3: will be opened. As. soon as the tube 3; commences. to. move upwardly it will, by means of. the post-I H; thesleeve. 16,- and the pins' I4; commenceto: lift the reversing valve member I2. so: thatthersuction openings 2| begin to close; Thus, during the relatively short timev interval in: which. the bottom edge 25 0f the'narrow' groove 22:. moves" upwardly across the narrowsuction openings 2] the receptacle A is subjected to a" suction effect creating a sub-atmospheric: pressurein there'- ceptacle. As soon as the tube 3 commences its upward movementits bottom end will be opened by moving away from the head Land the suction created in the receptacle A will suck liquid relatively rapidly into the receptacle to fill: same partially wherebyfoam will be produced: upon the liquidthus having been supplied to. thereceptacle. This action continues until the valve member I2 has been raised into the position as shown in Fig. 2 in which its groove 22 has just been brought out of communication with the opening 2! of the stem 5. Said phase of relatively violent filling operation is followed by a second phase in which liquid is allowed to flow by its own gravity into the receptacle A to fill same completely. To this end the receptacle A and, consequently, also the tube 3 and the reversing valve member 12, are elevated further. As soon as the reversing valve member l2 commences its continued upward movement from the position as shown in Fig. 2. its bottom edge 24 commences to move upwardly across the outlet opening 28 whereupon said openings will be uncovered to communicate with the atmosphere as shown in Fig. 3. Thereby air will enter the openings 26 and flow into the receptacle A to produce an atmospheric pressure therein so that the liquid will by its own gravity flow through the gradually widening opening at the bottom end of the tube 3 into the receptacle A. This additionally supplied liquid will expel foam and force same upwardly into the channel 6 and further out through the outlet openings 26. This action continues during the time interval in which the reversing valve member l2 moves into a top position and returns to the position as shown in Fig. 2. Thus, when the receptacle A is lowered the spring 13 will force the valve member i2, and consequently, also the tube 3 downwardly while liquid is still flowing by its own gravity into the receptacle A until the valve member 12 passes the position shown in Fig. 3 to close the openings Ell and re-establish the communication between the channel 6 and the suction source it whereby a third phase of the filling operation will commence.

In this third phase of operation the valve member l2 moves downwardly from the position as shown in Fig. 2 whereby a suction effect will again be produced in the receptacle A. Thereby foam and air present above the liquid in the top portion of the receptacle and also air having entered through the openings 2!] will be sucked through the channel 6. Simultaneously liquid will be sucked into the receptacle A and further into the channel 6 so that the receptacle will have been filled up to the mouth 30 of the channel ii when the filling operation is finished.

It will be understood that the operation described is obtained by the distance between the bottom edge 24 of the valve member I2 and the bottom edge 25 of the groove 22 being exactly equal to the distance between the top edges 26 of the suction openings 2! and the bottom edges 2'! of the outlet openings 29 as clearly shown in Fig. 1. But said distances may differ slightly without disturbing the operation since the changes of air pressure in the receptacle cannot, of course, occur instantaneously even though said distances are exactly equal.

Liquid possibly remaining on the convex bottom surface of the valve head 4 after finished filling operation will flow down towards the mouth 30 of the channel 6 and be sucked up through said channel.

I claim:

1. In an apparatus for delivering liquids from a reservoir having a spout, a fixed stem extending downwardly within said spout and having at its bottom end a head forming an upwardly facing valve seat, a nozzle slidably mounted Within said spout and forming a valve member engageable with said valve seat, a reversing valve member supported by said nozzle and being slidable longitudinally on said stem, a channel extending longitudinally in said stem and opening through said head, a suction opening and an outlet opening in said stem communicating with said channel and being spaced apart longitudinally of said stem, a suction source, a suction passage in said reversing valve member communicating with said suction source and adapted to register with said suction opening when said nozzle rests on said valve seat wherebysaid outlet opening is held closed by said reversing valve member, said nozzle being upon. upward movement operative to raise said reversing valve member to close said suction opening and thereafter to open said outlet opening to the atmosphere, said reversing valve member being operative upon downward closing movement of said nozzle to first close said outlet opening and then to connect said suction opening with said suction passage.

2. In an apparatus for delivering liquids from a reservoir having a spout, a fixed stern extending downwardly within said spout and having at its bottom end a head forming an upwardly facing valve seat, a nozzle slidably mounted within said spout and forming a valve member engageable with said valve seat, a reversing valve member having a bottom edge and being supported by said nozzle and being slidable longitudinally on said stem, a channel extending longitudinally in said stem and opening through said head, a suction opening and an outlet opening in said stem, said openings having each a top edge and a bottom edge and communicating with said channel and being spaced apart longitudinally of said stem, a suction source, a suction passage in said reversing valve member having a bottom edge and communicating with said suction source and being adapted to register with said suction opening when said nozzle rests on said valve seat whereby said outlet opening is held closed by said reversing valve member, said nozzle being upon upward movement operative to raise said reversing valve member to close said suction opening and thereafter to open said outlet opening to the atmosphere, said reversing valve member being operative upon downward closing movement of said nozzle to first close said outlet opening and then to connect said suction opening with said suction passage, said bottom edge of said reversing valve member being movable across said outlet opening, the distance between the bottom edges of said valve member and its suction passage being equal to the distance between the top edge of said suction opening and the bottom edge of said outlet opening.

3. In an apparatus for delivering liquids from a reservoir having a spout, a fixed stem extending downwardly within said spout and having at its bottom end a head forming an upwardly facing valve seat, a nozzle slidably mounted within said spout and forming a valve member engageable with said valve seat, a reversing valve member supported by said nozzle and being slidable longitudinally on said stem, a channel ex tending longitudinally in said stem and opening through said head, a suction opening and an outlet opening in said stern communicating with said channel and being spaced apart longitudinally of said stem, a suction source, a suction passage in said reversing valve member communicating with said suction source and adapted to register with said suction opening when said nozzle rests on said valve seat whereby said out- 5 6 let opening is held closed by said reversing valve member said nozzle being upon upward move- References Clted 1n the file of 171115 patent ment operative to raise said reversing valve mem- UNITED STA E PATENTS ber to close said suction opening and thereafter to open said outlet opening to the atmosphere, 5 gg g g Feb ig said reversing valve member being operatlve 2363543 Miner No 28 1944 upon downward closing movement of said nozzle to first close said outlet opening and then to connect said suction opening with said suction passage, said head having a convex bottom face en- 10 circling the bottom end of said channel.

J OHAN GUNNAR NILSSO-N.

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