US2613849A - Cartridge for pressure dispensing devices - Google Patents

Description

0ct. 14, 1952 T.' WARD CARTRIDGE FOR PRESSURE DISPENSING DEVICES Filed June :5, 1949 IN'VENTDR LAWRENCE r. wmp

. Patented Oct. 14, 1952 4s'x'vl'rrrEs PATENT] er1-lcs i Y, f n A 2,613,849 n f CARTRIDGE FOR PRESSURE DISPENSING I f DEVICES I Lawrence'liWard, East Orange, N. J assigner to Prel Incorporated,n East Qrange, N. J., a corporation ApplieaticnJune 3, 1949*,-seria1Na 96,957

^ `5 Claims.

This inventionrelatesfto pressure dispensing devices of the typefin which a cylinder or cartridge is .lled with l.fluid under pressure and is pierced to permittl'ie ejection of the uid. The invention is yapplicable4 todispensing devices of this kind in which thefinaterial to be dispensed is contained' withinthe. cylinder lor cartridge or in which theV material to be dispensed is contained elsewhere and thefluid in the lcylinder` or cartridge is utilizedmerely to provide.y pressure for dispensing certain materials. The former type of dispenser is Adescribed an illustrated in the followingspecication and drawmgs. .i

The purpose'of the' invention is to provide a pressure dispensing device in which the puncturable area of th'e .cartridgefis protected against accidental puncturingrand effective sealing means is provided to Iprevent leakage o f the iiuid ,from the cartridgeraround the puncturedend.

These and otherv objectsV of the invention will be hereinafter. 'more' fully' explained and described in the following description of the invention and illustratedby way ofA example in the drawings annexe'dthereto, in which:

Fig.` l isa'vertical section] through a dispensingdevice with certain parts in side elevation showing a cartridge lmoui'ited'thereon,l and the piercing pin movedparty way'ito the puncturing position; f "f Fig. 2 is a fragmentary verticalsection showing the relative position of the'pier'cing pin and (o1. yazzti cartridge before the commencement of the pierc- Fig, 3 is a similar view showing the relative position of the p arts'at'the commencement of the piercing operation'and i Fig. 4 isa f similar viewshowingthe position of the parts at the/completion of the piercingfop-v In thefdra'wings corresponding numerals refer to corresponding parts 'inf the different iigures.

Referring rstto Figure 1j the dispensing containerfconsists primarily of a substantially cylindrical supportingv member I having an aperture lain the side'A thereof for insertion of the cartridge 21j-# The cartridge 2 isl of known construction andf'i'siorm'ed preferablyof metal, which will be ofs'ulicient strength`r to resistV the pressure of the fluid contained therein.

In 2the form of invention shown in the drawings and hereinafter described, itis intended that the cartridge 'willcontain a disinfecting or deodorizing fluid and an inert compressible gas under pressure which will eject the fluid when the cartridge is punctured.

The cartridge is preferably inv capsule form having a restricted'neck'A 2a open at its ends.,

This open end is sealed Sv by the means hereafter described. rlhe construction'of the sealing member can best be observed in Figures 2, 3 and 4 which are on an enlarged scale.

The sealing is effected by a cup-shaped member generally designated as 3. The bottom 3a of the cup-shaped member is eitherreduced in thickness or is formed of weaker material, so that it is suiilciently strong to 'resist the pressure 'within the cartridge-but can be readily `punc tured by suitable puncturing means.

The cup-shaped member is provided with an external flange 3b between the rim 3c thereof and the puncturable bottom area. 3a. This ange is adapted to rest upon shoulder 2b. This supports the cup-shaped member 3 in the opening in the end of the cartridge 2 substantially coaxially therewith. t Y

A washer 4 of suitable compressible material such as rubber or synthetic rubber surrounds the cup-shaped member 3 within the neck 2al of the cartridge and is compressed and rmly held therein by means of a turned-in iiange 2c at the top of the cartridge 2. The washer 4 is thus compressed between flange 2c and the flange 3b forming a tight seal to prevent escapeof the fluidunder pressure'in the cartridge 2.l i

. It will -be observed that the distance between the iiange 3b of the cup-shaped member 3 and the rim 3c of said cup-shaped member is greater than the distance between the shoulder 2b and turned-in iiange 2c of the cartridge 2, so that the rim 3c of the `cup-shaped member projects above the turned-in. ange or topy off-the. cartridge A2. It will also be observed that the puncturablearea 31a is located well below thetop o f.

the cartridge 2 so that accidental piercing thereof is very unlikely to occur.

Referring again to the dispensing containeras shown in Figure l, a base member 5 is provided and secured to bolt `liwhich is adapted. to screw through threaded aperture Ibfin the base ofthe cylindrical member v| The lower endfof cartridge 2 when inserted in the container restsfon the end of the bolts 6.. Byscrewingthe bolt in the cartridge may -be lforced against thepiercing pin causing it to puncture the puncturable area ofV the cartridge as hereafter described.v Piercing pin 1, which is provided with a small bore 1a is secured toy nozzle member 8 `which has ahead 8a projecting through vaperture Ic-V in the side of the cylindrical member l. nion 8b is iitted into elongated recess yld in the wall of said cylindricalmember. l as shown -in Figure 1, in dotted lines, and dispensing passage 8c ,extends through the nozzlemember and communicates with-dispensing passage .or bore 'la in the .piercing pin T.-

Details of nozzle. 8.are not describedsince it does notformpartof the invention.

, threaded upper vend .of cylindrical men'1be`r"| H and is provided with a central stud 10a. CoilV spring A trunwill force the fluid up through tube Y I3.

II mounted on said stud Ia engages lever arm 9 on which'is provided .a stud 9a for positioning said spring. rSpring I'I` presses the inner end of the lever arm against a boss on the'upper face of nozzle member when the cap is screwed down. This pressure is relieved by pressing the outer end of the lever 9. It will be observed that the piercing pin 'I is mounted with its central axis substantially in alignment with the central axis of the cup-shaped member, so that when base member is rotated screw 6 will be screwed in forcing the cartridge 2 upwardly, the piercing pin I will enter the cup-shaped member substantially along the central axis thereof until it' engages and pierces the puncturable area 3a..

In Figure I the device is shown with the cap 5 partially screwed in bringing the piercing pin I 'just within' the upper end of the'vcup-sha'ped members.;

In Figure 2, the relative position of the'parts 'is shown before the pin has entered the cupshaped members. In Figurek'S, the cartridge is shown moved up to the point where the pin commences to pierce thepuncturable area 3a and in Figure' 4 4the puncturing operation isI shown as completed.` V A I It will'be observed that the lower end of the pin is tapered to a blunt point. Surrounding this tapered portion of the pin 'I is a washer I2 of material similar to the washer fl. The nozzle member 8, which is also the pin supporting member, has an annular flange 8e depending therefrom'an'd an inturned rim or flange 8fk holds the washerIZ inA close contact with the tap-ered sides ofthe pin 1. It will be observed thatl the distance 'between the point, of the pin 'I and'the washer I 2'is substantially the same as, or slightly lessgthan, the distance between the rim 3c Yof the cup-shaped member and the' puncturable area 3a whereby the washer-willV engage the rim of the cup-shaped member before the point of the pin pierces the puncturable area of the cupyshaped member'. In fact, the engagement of the rim '3c and washerfZ takes lplace almost simultaneously with the engagement o'f the point of the v.pin 'I with the said puncturable area 3a, but the sealing takes place before the puncturing takes place." This is very` important in 'order 'to avoid leakage of the fluid in the cartridge. c

It will also be observed `byreferenc'evto Fig. 4

that the washer I2, whevnthe` piercingV act is 'completed is 4forced between the'rim 3c of tlie cup-shaped members and the-tapering orsloping sides' of the piercing pin A'I,'thus eifectingla perfeet seal vand preventing any leakage around the sides of fthe vpin 7.As Aafurther .precaution against'leakage an 'annularwa'sher I5 of rubber or other suitable resilient material is inserted within the cup member 3, through which the piercing pin 'I passes. l l When the piercing operation is completed, the contents of, the cartridge Elwill pass upt-hrough the bore or passage la andthe perc'ingpin I to passagey 8c in the nozzle member 8.

In the construction described,A a tube I3 mounted on the lower portion ofthe cup-shaped member 3 depends into thefcartridge 2 to apoint near the bottom thereof., Ifthe cartridge is used asa dispensing means for liquid disinfectant or a similar product, the lower. :portion ofthe cartridge will be filled with the'materialto be dispensed and the gas or other compressible uid will be in the upper part of the cartridge ,2, and

It wiu'be observed from the `above description 4 thatav construction is provided in which the puncturable .area of the cartridge seal is protected from inadvertent puncturing, and a leakproof seal is provided to prevent leakage of the contents of the cartridge. It is 'thought that the construction and use of the invention will be apparent from the above v description of the various parts and their' purposes. It is to'be understood that the form of my invention herewith shown and described, is to be taken as a-preferred example of the same, and

that various changes in the shape, size and arrangement of parts may be resorted to, Without departing from the spirit of my invention, or the scope of the subjoined claims.

What 'I claim asv my invention is:

l. 4In` a l'pressure dispensing device, a frame member, a cartridge for' uidvunder pressure mounted-insaid` frame member Aand having an opening atone end thereof, a seal for saidy opening comprising a cup-shaped member having a rim around the top thereof and a puncturable area inthe bottom thereof, means for mounting the cup-shaped member in the opening in the oar'tridgevvith its rim projecting above the end of .the cartridge and vits puncturable area within thejopening inthe vcartridge and below the endr thereof,'a sealing washer between the cup-shaped member and the cartridge, aipiercng pin tapering substantially. to a point, a member mounted `on'the frame' member and supporting the piercing pinA above the cup-shaped member with its central axisV substantially Vin alignment with the central axis of the .cup-shaped member, said cartridge bei-ng axially Amovablerelative to 'the pin-supporting member, a washer of resilient material surrounding the pin, said washerbeing secured to the pin supportingy member in close r contactwith the tapered sides of the piercing pin, and means on the frame member for imparting relativermoveme'nt to thecartridge and the pinsupporting Vmember to cause the last mentioned washerY to bev 4conu'iressed between the rimand the tapered side of the piercing-pin and to cause the pin to piercethe puncturable area, the distance between vthe point Vof the pin and the .washerbeing 'relatively less than the distancey between the rim of the cup-shaped member and the punoturable area whereby the washer will engage the rimof the cup-shaped member before the piercing pin punctures the puncturable area.

Iny a `pressure `dispensing device, a frame member,.a cartridge for fluid under pressure mounted in said frame member and having an opening ,at ,One end thereof, a seal for said opening comprising fa cup-shaped member having a rim aroundlithe top thereof anda puncturable area lin the .bottom thereof and an external ange between the bottom and top thereof, said cartridge.y having an internal shoulder in the opening thereof below the top thereof on which the flange of the. cup-shaped Amember rests, and a turned-in `flange at the top thereof, a sealing washer surrounding the cup-shaped member and compressed between the turned-in flange of the cartridge and the flange of the cup-shaped member, the distance between thev iiange on vthe cup-shaped member and the rim thereof being such that the rim projects above the top of the turned-in ange of the cartridge, a piercingA 5 with the central axis of the cup-shaped member, a washer of resilient material surrounding the pin, said washed being secured to the pin sup,-

porting member in close `contact with the tapered` sides of the piercing pin, and means on the frame member for imparting relative movement to the pin and the cartridge to cause the last-mentioned washer to be compressed between the rim and the tapered side of the piercing pin and to cause the pin to pierce the puncturable area, the diswasher being relatively less than the distance between the rim of the cup-shaped member and the puncturable area wherebyy the washer will engage the rim of the cup-shaped member before the piercing pin punctures the puncturable area,

depending into the cartridge, a piercing pin.

tapering substantially to a point, a member mounted onthe frame member and supporting the piercing pin above the cup-shaped member with its central axis substantially in alignment vwith the central axis of the cup-shaped member,

awasher of resilient material surrounding the pin, said washer being secured to the pin sup- 10 tance between the point 4of the pin and ,the

3. In a pressure dispensing device, a cartridge for fluid under pressure having an opening at one end thereof, a seal for said .opening comprising a cup-shaped member having a rim around the top thereof and a puncturable area in the rbottom thereof, means for mounting the cup-shaped member in the opening in the cartridge with its l axiallymovable relative vto the pin-supportingk 5 member, a washer of resilient material surround-4 ing the pin, said washer being secured to the sup-` porting means in close contact with the tapered sides of the piercing pin, and means on the dispensing container to move the cartridge relative to the pin-supporting member substantially along the central axis of the cup-shaped member to engage the last-mentioned washer with the rim and compress it between the rim and the tapered side of the piercing pin and pierce the puncturable area of the cup-shaped member with the point of the piercing pin, the distance between the point of the pin and the washer relative to the distance between the rim ofthe cup-shaped member and the puncturable area being such that the washer will engage the rim of the cup-shaped member before the point of the piercing pin pierces the puncturable area of the cup-shaped member.

4. In Aa pressure dispensing device, a frame member, a cartridge for fluid under pressure mounted in said frame member and having an opening at one end thereof, a seal for said opening comprising a cup-shaped'member having a rim around the top thereof and a puncturable area in the bottom thereof and an external flange between the bottom and top thereof, said cartridge having an internal shoulderA in the opening thereof below the top` thereof on which the flange of the cup-shaped member rests, and a turned-in flange at the top thereof, a sealing washer surrounding the cup-shaped member and compressed between the turned-in flange of the cartridge and the flange of the cup-shaped member, the distance between the flange on the cupshaped member and the rim thereof being such that the rim projects above the top of the turned in flange on the cartridge, a tube connected to the cup-shaped member beneath the rim and porting member in close Contact with the tapered sides of the piercing pin, and means on the frame member for impartingrelative movementv to the pin and the cartridge to cause the last-mentioned washer to be compressed between the rim and the tapered side of piercing pin and to cause the pin to pierce the puncturable area.

5. In a pressure dispensing device, a frame member, a cartridge for fluid under pressure mounted in said frame member and having an opening at one end thereof, a sealfor said opening comprising a cup-shaped member having a rim around the top thereof and a puncturable area in the bottom thereof, means for mounting the cup-shaped member in they opening'in the cartridge with its rim projecting above the end of the cartridge and its puncturable area within the opening in the cartridge and below the vend thereof, a sealing washer between the cup-shaped member and the cartridge, a piercing pin tapering substantially to a point, a member mounted on the frame member and supporting the piercing pin above the cup-shaped member with its central axis substantially in alignment with the central axis of the cup-shaped member, a washer of resilient material surrounding the pin, said washer being secured to the pin supporting member in close contact with the tapered sides of"` the piercing pin, said `pin-supporting member` having an annular ange depending therefrom,v

with an inturned edge, for receiving and holding the said washer around and in contact with the pin, and means on the frame member for imparting relative movement to the pin and the cartridge to cause the washer to be compressed between the rim and the tapered side ofthe piercing pin and to cause the pin to pierce the puncturable area, the distance between the point of the pin and the washer being relatively less than the distance between the rim of the cupshaped member and the puncturable area whereby the washer will engage the rim of the cup-shaped member before thev piercing pin y punctures the puncturable area. l

LAWRENCE T. WARD.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED sTATEs PATENTS l2,506,983 Williams May 9, 1950

Images