US2673004A - Pressure bulb and holder - Google Patents

Description

March 23, 1954 R. s. KNAPP 2,673,004

PRESSURE BULB AND HOLDER Filed June 25, 1949 Patented Mar. 23, 1954 ENT OFFH'IE 2,673,004 PRESSURE BULB AND HOLDER Robert S, Knapp, Knapp-Monarch Comp corporation of Delawar St. Louis, Mo., assigner to any, St. Louis, -Mo., a e

Application June 25, 1949, Serial No. 101,451

2 laims.

'I-his invention relates to a special type `of pressure -bulb and a special holder therefor whereby different designs of pressure bulbs may be provided and a specific one of the designs will intert operationally with` only a specific holder dessigned `particularly therefor While at the same time none of the bulbs will t a standard holder.

@ne object of the invention is to provide means to prevent inadvertent discharge of a certain `'gas from v'a :pressure bulb i'nto a container that is `not supposed to receive such gas. For instance, some pressure bulbs contain a gas for processing foods While others may contain gas and sometimes liquid also, either of which may be of toxic nature, and it is lobviously 'undesirable to discharge `such into ya container 1oi" lfood. By Way of a speciiic example, cream 'aerators are designed to have a bulb of vCO2) and/or nitrous oxide discharged into the 'container 'of cream Whereas some bulbs contain a quantity yof insecticide, and a charge of CQ for discharging the insecticide. Obviously it is desirable to provide means to prevent inadvertent discharging' 'of the insecticide int'o the cream container.

One object of my present invention therefore is `to provide a design vof bulb which cannot be inserted into a standard bulb holder for syphon's or lfood processing containers and `the like, but which can be used i'n a -holderespecially designed for the'bul-b, means of 'cooperation being provided between 'various bulbs 'and their respective holders-for permitting 4coaction and operation of only a certain design 'of 'bulb with 'a 'certain `design of holder.

Another object is to .provide a `simple means to prevent coaction 'of an undesirable bulb with a standard bulb holder for syphons or for food processing comprising a rib formed around the bulb.

Still another object is to provide a special hold-el' for vthe particular bulb just described which has a "shl'der 'at the"arop'el" place for engaging the bead and propelling the bulb against the ypiercing pin for the b'ulb.V

AJ-further object is Ito provide bulbs with beads at vdiiierent positons therealon'g and holders having shoulders at different locations corresponding thereto, the arrangement being such that only a predetermined holder Will coact With and properly operate a predetermined bulb.

With these and other objects in View, my invention consists in the construction, arrangement and combination of the various parts of my pressure bulb and my holder therefor whereby the objects contemplated are attained, as hereg inafter more fully set forth, pointed 'out in Y claims 'and illustrated in the accompanying fdr-atvings, wherein:

Figure 1 is a perspective View of one form which my improved pressure bulb 'may take.

Figure 2 is a side elevation thereoic showing la holder 'designed for this particular bulb, and showing 'the parts prior to the holdei bein?,f screwed down for effecting piercing of the fbulb.

Figure 3 is a similar view showing the holder screwed down to the nal 'position for sealing `the bulb with respect to a receiver thereioi'and piercine,r the bulb for escape of the `gas thererofm.

Figure 4 is a similar view show-ing by means of solid lines a different lbulb and holder; and

Figures 5, v(i and '7 are similar views showing still other designs of bulbs and holders 'to illus'- trate the range of 'possibilities for interiittih'g bulbs vand holders with Leach other in "such manner that bulbs of 'a design not intended for a Sparticular holder 'can either not 'be received far enough into the holder or are vreceived too ira-r thereinto so Athat the bulb cannot be pierced when the holder is screwed down.

In Figure 1, 'show a bulb l0 having the usual neck i2 having a puncturable 'diaphragm M seaiin'g the outer end o'f the neck. The bulb thus Sfar described is a standard bulb fsold under the Sparklet trade-mark. It is designed to be -re'- ceived in a holder that substan'tialy 'fits it and the majority vof 'uses are for syphons and cream aerators.

The invention in the present case contemplates the addition of Aabead l' around 'the bulb s'o'that the bulb cannot be received in a standard -hbld'e'r and the provision of 'a special holder i8 xviii accommodate the bead. This 'bead would be ipr'ovided yon any bulb 'charged 'with a gas Snot iintended for use in a syphon `or creara aerator,

In Figure 2, I show vthe `holder 1&2 Ifoi ithe bulb I0, a shoulder 20 being provided therein to gage 'the bead .it as illustrated and the lio-lider lia-ving threads 22 terminating in a pilot portion 213. 'The threads 22 are adapted to c'oact tiri-th threads .2e of 'a receiver )ze which be a futtihfg on a Contailier for, Where 'the bulb fdo'ntaihs both 'a liquid 'to be 'lisp'en'sed 'and a compressed gas for providing the dispensing pressure, the tting 28 may be a control valve structure or merely a discharge nozzle such as a capillary tube. The tting 28 may extend from a suitable container to receive the gas such as a container of liquid to be dispensed under the pressure produced by the gas. In any case, the Jutting would include a piercing pin 3b and a sealing gasket 32 fr .a with a suitable passageway 34 leading to the container, nozzle or capillary tube. In Figure 2, a portion of the lower right corner of the fitting has been broken away to illustrate more clearly the pilotportion 24 of the holder I8.

Figure 2 illustrates the pilot portion 24 engaged on the threads 26 of the fitting 2B. The fitting is then screwed down as in Figure 3 which first engages the outer end of the neck l2 and the diaphragm I4 with the sealing washer 32 and then engages the diaphragm with the piercing pin 30 for the purpose of piercing the diaphragm to permit the gas to be dispensed through the passageway 34. In the nal position of Figure 3 the holder has caused the bulb to be sealed and properly pierced for complete discharge of its contents.

The bead IS- around the bulb ID may be placed in different positions, Figures 1, 2 and 3 illustrating what I will term as the third (3) position. This is indicated by 3 within a circle. In Figure 4, I illustrate the bead i6 slightly ahead of that in Figure 3 and refer to it as the second position (2). The dotted position in this figure illustrates the position of the bulb (2) and holder IB before the holder is screwed down on the itting 28. The shoulder indicated at 23e in this instance, is at a diiferent position in the holder I8 than shown in Figure 3, in order to properly cooperate With the bead I6 at the (2) position.

In Figure 5, I show the bead it in solid lines at the fourth (4) position and the shoulder 29h changed in position to correspond thereto. By means of dotted lines, I show the relative position of a (3) bead in relation to the (4) bead and it is obvious that the holder I8 in this particular figure can be screwed all the way down before it contacts the (3) bead so that a bulb of the kind shown in Figure 3 could not be operated in a holder of the kind shown in Figure 4. On the other hand, if a bulb with the bead at position (3) is placed in the holder of Figure 4, the left end of the holder could not even be engaged with the threads 26 of the tting 28. It is obvious, therefore, that the mere change in position of the bead I6 and its corresponding shoulder 20 eliminate the possibility of the wrong bulb being received in and operated by a holder not intended for it.

As a further extension of the idea, I show in Figure 6 how the bead may be in a rst position (l), and by means of dotted lines the position of the parts prior to the threads of the holder engaging the threads of the fitting. In this instance, the shoulder 2lic is still closer to the threads than the shoulder 20a of Figure 4. On the other hand, the bead I6 may be at the (5) position illustrated in Figure 7 or even at the position (6) illustrated therein by dotted lines which would call for a shoulder at 20d and 2&1e respectively.

From the foregoing specification it is obvious that I have provided a simple means for preventing certain designs of pressure bulbs from being received in the holders for standard bulbs. Also, the bead around the bulb may be formed at different positions for proper coaction of different bulbs with only the holders designed therefor. Thus, it is possible to charge the bulbs with many different materials without danger of the wrong material being discharged into the wrong dispenser or discharge nozzle. Material such as deoderants, sun-tan solutions', perfumes, insecticides and the like could thus be dispensed from various dispensers without possibility of an error resulting from putting the wrong bulb in the wrong dispenser. At the same time, standard well known bulbs (predominantly CO2) could be used as they now are and bulbs of the kind disclosed in this application could not be used in the holders for these standard bulbs.

By having the bead i6 at different positions along the axis of the bulb, and providing correspondingly designed holders, many different materials can be discharged without danger of mixing bulbs and dispensers. The means for accomplishing these ends are relatively simple from the manufacturing standpoint as the bead can be readily formed around the bulb (which is drawn from sheet metal) at any desired position.

Some changes may be made in the design of the bulb-s and the holders therefor without departing from the real spirit and purpose of my invention, and it is my intention to cover by my claims any modified forms of structure 0r use of mechanical equivalents which may be reasonably included within their scope.

I claim as my invention:

l. In a pressure bulb and a holder therefor, a bulb having an enlargement surrounding the body thereof to prevent the reception of said bulb in a bulb holder for a bulb without such enlargement, and a holder specifically for said bulb having an internal shoulder for engaging said enlargement and thereby propelling the bulb against sealing and piercing means therefor, said shoulder being positioned for effecting sealing and piercing of only a bulb having an enlargement in a predetermined position along the length of said bulb.

2. In a pressure bulb and holder therefor, a bulb having a bead surrounding the body thereof and a tubular holder having a bore to receive and closely fit said bulb, said bore having a counterbore, the outer end of which serves as a shoulder for engaging said bead and thereby propelling the bulb against a sealing washer and a piercing pin of a pressure reception fitting, said shoulder of said counterbore being properly positioned in respect to said bead when the holder is operatively engaged with the pressure reception fitting to first eiect sealing and then piercing of the bulb as the holder is further engaged with the fitting.

ROBERT S. KNAPP.

References Cited in the le of this patent UNITED STATES PATENTS

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