US2199947A - Dispensing nozzle - Google Patents

Description

y 7, 1940-- R. w. BENQFSKY ET AL 9.947

DISPENSING NOZZLE I Filed July 31, 1937 I INVENTORS RJAL'BEN FSKY y a/vo H. H. DAM ELS W 77. 1 419 ATTQ NEY.

Patented May 1940 DISPENSING NOZZLE Richard w. Benotsky, Oakland, and Harold n. Daniels, Alameda, Calif.

Application July 31, 1937, Serial No. 156,772

I 5 Claims. (Cl. 221-147) The invention relates to a nozzle which is particularly designed for mounting on ahandsupported container of liquid to dispense metered charges of liquid from the container.

An object of the invention is to provide an improved dispensing noz'zle which may be actuated with particular rapidity to dispense successive and like charge of liquid while disposed in the same liquid-dispensing position, said position corresponding to a pouring position for the container.

Another object is to provide a nozzle of the type described which may be readily and optionally utilized to provide a regulated constant flow of liquid from a container which mounts it.

A further object is to provide an improved dispensing nozzle with a valve means which is arranged to be controlled as desired by the contact of a valve operating stem with a vessel which is to receive the liquid.

Yet another object is to provide means on the valve stem for such engagement with a wall ofthe receiving vessel as to insure a fixed disposal of the discharge outlet of the nozzle with respect to the vessel.

The invention possesses other objects and features of advantage, some of which, with'the foregoing, will be set forth or be apparent in the following description of a typical embodiment of the invention, and in the accompanying drawing, in which,

Figure l is an elevation showing a dispenser nozzle embodying the present features of invention mounted on a bottle which is disposed to discharge liquid from the bottle into a tumbler, a portion of the tumbler being broken away.

Figure 2 is an enlarged perspective view of a tumbler-contacting member shown in Figure 1.

Figure 3 is an enlarged and partly sectional side view of the nozzle in liquid-discharging position, but with a discharge valve thereof closed.

Figure 4 is a full axial section of the nozzle in discharging condition.

Figures 5 and 6 are transverse sections of the nozzle taken respectively at 5-5 and 6-6 in Figure 4. I

A primary use for the present type of. nozzle is the dispensing of predetermined and equal quantitles of a beverage, or other liquid, from a supply contained in a bottle B and into receiving container such as a tumbler C, from which the liquid may be drunk or otherwise removed, and the present disclosure is, by way of illustration, specific to such a use for the nozzle. The bottle B is 01' a size and form suitable for manual support, and has a discharge neck N terminating at a lip portion L having a flaring cork-receiving bore in which a complementary portion of the nozzle may engage in lieu of a cork for the bottle as a means for mounting the'nozzle on the bottle. 1

The features of the present invention are embodied in a unitary nozzle structure 8 wherein a casing provides a metering cavity 9 in which a valve means of the unit is'operatively disposed.

The inner end portion of the casing. comprises a tubular member II which is conically tapered to its free end and carries a sleeve l2 of cork or other yielding material for sealing and retaining the member within the bore of the bottle lip portion L when'the unit is mounted on the bottle.

An intermediate casing portion l3 comprises a member having a cylindrical wall portion l4 and an inturned radial wall at its inner end, the latter wall being centrally apertured to sealedly engage the outer end of the member II. The member l3 may be transparent to provide for viewing the contents of the metering cavity 9, and if formed of a material which is originally plastic, may be formed around a radial flange l6 provided adjacent the outer end of the member II to eiiect the desired sealed connection. As shown, the inner end of the member I I is externally threaded to carry a nut I! for securing the soft sealing sleeve [2 on the member and. between the nut and the wall I5; in this manner, a replacement of the sleeve l2 may be readily made.

A forward casing portion [8 extends forwardly from the portion l3 and is turned inwardly to define a discharge opening l9 having its plane perpendicular to the nozzle axis. In the present structure, the casing portion l8 comprises a separately formed member which tightly engages about the forward end of the member l3 to provide a press-fit association of the members. The member I8 comprises a relatively thin shell, and the inner face portion thereof adjacent the opening I9 is arranged to provide a seat 2| for a valve disc which normally engages said seat and is provided by a plunger element 23 which is arranged for reciprocation to and from the seat axially of the nozzle unit. The valve disc preferably comprises a contact ring 22 of a rubber or other composition which is slightly yielding for providing a liquid seal at the seat 2|, and the ring 22 is shown as being fixed to the plunger 23 by its engagement in an annular groove provided around the plunger, said disc being smallclosed at the forward end of its :bore and tele-.

scopically receives the forward end portion of the tube 24. The tube 24 supports and guides the plunger between its limiting forward position as determined by the seating of the valve disc and a limiting rearward position as determined by the engagement of the forward end of the tube 24 with the closed end of the tube 25.

An helical compression spring 26 receives the tubes 24 and 25 axially through it, and is cooperative between the plunger at the base of the tube 25 and a seat between the member II and the tube 24 to constantly urge a seating of the valve disc 22 to seal the discharge passage l9.

Ports 2! are provided through the tube 25 at the forward portion thereof which is uncovered when the valve disc 22 engages the seat 2|, and when the plunger 25 is sufficiently displaced-the tube 24 will close the DOI tS 21 in the manner of a slide valve, this being the condition when the plunger is displaced to engage the extremity of the tube 24, it being noted that the latter tube is constantly open to the liquid in the bottle B. The annular surface provided at the forward end of the tube 24', and the seat provided for it within the forward end of the tube 25 are preferably perpendicular to the nozzle axis whereby the limiting engagement of the tube 24 with said seat provides a liquid-tight joint thereat, it being noted that the telescopic engagement of the tubes must be free enough to avoid undue friction between the tubes and so might permit some liquid leakage into the metering chamber 9 as the latter is being emptied unless this final seal is provided. It will be understood that the telescopically engaged tubes 24 and 25 define an axial space which is not part of the metering chamber 9, and that said chamber is therefore annular in cross-section. A relatively small air tube 28 is connected with the annular space 29 defined between the tubular member II and the tube 24, preferably at the inner end of these members, said tube being shown as extending for some distance between.

the joined ends of the member and tube and well into the space of the bottle which mounts the nozzle. As shown, the tube 28 is sealedly engaged between the bore of the member H and a trough-like inward offset 3| provided in the tube 24 to receive the forward end of the tube 28 to provide an open connection between the tube 28 and the space 29, the latter space comprising a rearward extension of the metering space 9 which is in greater part defined by and between the casing portions I 3 and I 8.

A suitable means is provided for facilitating a displacement of the plunger 23 to open the discharge valve of the unit when the nozzleis disposed for the gravity discharge therefrom of a liquid from a bottle B and into a receiving vessel such as the tumbler C. A simple and preferred means for the purpose comprises a reduced outer portion 33 of the plunger 23 which extends axiallyforwardly from the valve disc 22 as a valve-operating stem for pressing inwardly to open the discharge valve while closing the intake valve I extremity in set position with respect to the tumbler while liquid is being discharged into the tumbler from the nozzle. Accordingly, hooks are provided on thestem 33 for engagement over the tumbler lip to hold the stem extremity against movement downwardly along the tumbler side while the stem is forcibly pressed against the tumbler side to open the discharge valve, it being noted. that the nozzle will be disposed above a normal to the tumbler wall at the point engaged by the stem tip whereby a component of the pressure will urgethe stem tip downwardly along the engaged tumbler side. As shown, a. hook member 34 is provided with three equally spaced radiating arms 35 extending from a central sleeve member 36 for mounting on the stem 33, said arms having forwardly directed extensions 31 for selective hooking over a tumbler lip. The arrangement is such that at least one extension 31 will always be disposed above the stem for hooking over the tumbler lip; if the engaged extension is ,not in a vertical plane through the nozzle axis when first engaged with the tumbler lip, it will rotate to such position as the valve is opened because the plunger 23 is then free to rotate.

As particularly illustrated, the hook assembly 34 is removably and frictionally mounted on the stem 33 by reason of the engagement therewith of a friction ring 38 mounted in an annular recess provided in the bore of the sleeve 36. The hook arms might, of course, be provided as integral parts of the valve stem 33, or be otherwise Th stem 33 may either be engaged by a persons hand mounted on the stem. It will be noted that, the

sleeve 36 functions as a baille or dam to limit the fiow of discharging liquid along the stem 33.

When the discharge valve is closed and the bottle and nozzle are placed in liquid-discharging position as in Figure 3, liquid from the bottle will fill the nozzle cavity 9 by reason of the permitted unobstructed fiow of liquid into the cavity through the tubes 24 and 25 and the ports 21 in the latter tube in exchange for the air which escapes freely from said cavity through the tube 28. When the cavity 9 is full of liquid, the pressure of the stem 33 against the tumbler will effect a relative axial movement of the nozzle casing and plunger to displace the plunger to its inner limit as in Figure 4 for simultaneously releasing the liquid charge from the cavity 9 while completely closing thepassage provided by the tubes 24 and 25; in this manner the amount of liquid discharge will be limited to the space of the cavity and is therefore metered. A subsemetered charge of liquid in the cavity. If the plunger 23 should be held only partly displaced to leave the ports 21 partly open, a continuous flow of liquid from the bottle-may be provided at a rate determined by the degree of opening proareas-i7 vided at the ports; it will thus be understood that a metered or a controlled continuous discharge of liquid from the bottle B maybe alternatively provided with the nozzle unit 8.

In connection with the present nozzle unit, it is to be particularly noted that the provision of the space 29 and the connection of the relatively long tube 28 at the inner end ofsaid space insures against a liquid-flow interference with the flow of liquid-replacing air into the bottle for any pouring position for the nozzle. Also, the ready discharge from, and refilling of, the nozzle cavity 9 may occur without regard to the positioning of the air tube 28 with respect to the nozzle axis, whereby the dispensing of liquid from a bottle mounting a nozzle 8 may be effected without requiring any rotative adjustment of the bottle and nozzle. Furthermore, the specific combination of disc and slide valves in the present nozzle structure permits a particularly rapid discharge of metered liquid from the nozzle at the disc valve while providing a governed control of liquid fiow into the nozzle through the slide valve arrangement.

From the foregoing description taken in connection with the accompanying drawing, the ad-. vantages of construction and method ofuse will be readily understood by those skilled in the art to which this invention appertains. While we have described the features and principles of operation of a structure which we now consider to be a preferred embodiment of our invention,

we desire to have it understood that the present showing is primarily illustrative, and that such changes may be made, when desired, as fall within the scope of the following claims.

We claim:'

1. In combination with a receptacle having a side wall terminating at an upper lip, a liquiddispensing nozzle comprising a tubular container provided with a valve discharge passage at and across its forward end, a movable valve element operative to close said discharge passage and inwardly displaceable for opening the passage, spring means normally operative to' dispose said valve element for closing the passage, a. valve stem extending axially forwardly from the valve element through said passage and arranged for oblique thrusting engagement with said receptacle wall for opening the valve against the resistance of said spring, and a hook means on said stem extending laterally therefrom and opening forwardly for engagement over the receptacle lip to limit the downward movement of the tip of the stem along the wall while the stem tip operatively engages the wall.

2. In a dispensing nozzle for operative mounting at the end of a tubular-discharge neck of a bottle or the like, a cylindric casing providing a metering chamber and provided with a discharge passage at its forward end and an inlet passage at its rearward end, valve elements operative to selectively close the respective said passages alternatively for effecting an alternate filling and emptying of the chamber while the bottle and nozzle are disposed in a position for pouring liquid from the bottle, means disposed entirely within said chamber connecting said valve elements for their actuation together, means for mounting the nozzle on the bottle neck, andan air pipe fixed to the casing and constantly connecting the extreme inner end of the chamber with a point within the bottle.

3. In a liquid-dispensing nozzle for operative mounting at a discharge outlet for a sealed container, an elongated casing defining a chamber in the chamber and for movement between limiting forward and rear positions thereof, one of said tubes being radially perforated whereby the tubes are cooperative as a slide-valve with respect to the flow of liquid from the container and within the first tube to the chamber portion defined about the tubes and in such manner that said slide valve is open when the second tube is in its limiting forward position and is closed when the same tube is in its limiting rear position, and a valve member fixed to the second said tube and operative to close the forward casing opening only when the tube is in its limiting forward position.

4. A structure in accordance with claim 3 having an air-venting tube extending rearwardly from the rear end of the space defined between the casing and the first tube and through the container outlet into the container whereby liquid flowing from the container into the casing space about the telescopically engaged tubes may be replaced by air escaping from said space through said venting tube.

5. In a dispensing nozzle for operative mounting at a discharge outlet for a sealed container arranged for its constant support in an inverted position for the gravity flow of liquid therefrom,

a casing providing a metering chamber having discharge and inlet passages at opposite ends thereof, a disc valve operative outwardly of the inner end of said discharge passage to close the same, a slide valve operative to close said inlet passage to an adjusted degree, and an actuating element extending from the casing and connecting said valves for their synchronous operation between limiting positions thereof such that either valve is open when the other is closed and both valves are open in an intermediate position thereof to permit a continuous flow of liquid directly from the inverted bottle and at a a rate regulated by the setting of the slide valve.

RICHARD W. BENOFBKY. HAROLD H. DANIELS.

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