US2518259A - Dispensing container for fluid under pressure with manually operated, spring-biased valve and dashpot for delaying closing action thereof - Google Patents

Description

Aug. 8, 1950 R. STEVENSON 2,518,259

' DISPENSING CONTAINER FOR FLUID UNDER PRESSURE WITH MANUALLY-OPERATED, SPRING-BIASED VALVE AND DASHPOT FOR DELAYING CLOSING ACTION THEREOF Filed Aug. 9, 1945 mvsm-oa 30/6610 149 we 0/:

ATTORNEYS Patented Aug. 8, 1950 UNITED STATES PATENT GFFICE Robert Stevenson, Harrington, R. L, :assignor to Merit Engineering, Inc.,- acorporation of Rhode Island Application Au ust 9, 1945 Sfial N0. 6fl9,.7'87

1% Claims. I

This invention relates to a device for dispensing fluids either of a gaseous or liquid nature, which fluids are in a container under a pressure greater than that of atmospheric.-

Fluids are usually dispensed from a container in which they are carried either by shaking the fluid out of the container or by pumping the fluid out of the container by intermittently applying pressure through some actuating means thereto. Other fluids are dispensed from a container whentheyare under pressure by some sort of a valve control conduit through which the fluid is forced by the pressure in. the container Both of these means are subject to manual op oration in that they must be manually expelled from thecontainer or the value which controls the container must be closed after a predeter mined time by manual operation.

One of the objects :of this invention is to provide a dispensing device which by reason of the pressure in the container, discharge for a predetermined length of time,- the length of which will be dependent upon the construction of the device.

Another object of this invention is to provide a device which will discharge through a predetermined length of time and in an amount which will be de endent upon the opening or orifice through which .the fluid is forced.

Another object of this invention is to provide an arrangement so that the discharge will be initiated by manual pressure but will be automatically stopped after a predetermined length of time.

Another object of this invention is toprovide for a device which will control the discharge by use of .the fluid which .is discharged, that is,- the fluid which "is discharged will provide the pressure for the operating mechanism of the device.

With these and other objects in view, the invntion consists of .certain novel featuresof construction, as will .be more :iu'lly described and particularl pointed in the appended claims.

In proceeding with this invention, I provide a container for the fluid to" be dispensed which is of a sufficient strength "td hold fluid which will be under several atmospheres of ressure A valve is provided in this container which is so constructed that when pressure is applied to a portion of the valve the valve will be forced open so as to permit the fluid to be discharged by reason of its own pressure. Resilient means are present to close the valve as soon as pressure is released, but upon the opening of the valve a dash V pot is brought into play which receives some of the fluid which is .in the container and which is forced out of the dash pot through control-led small passages so that the pressure which tends to close the valve will be delayed in soclosing the valve until a predetermined length of time has elapsed, through which lengthof time a pre-' determined quantity of the flu-id to be dispensed is discharged from the container. The amount. of fluid to be discharged will depend upon the size of the orifice through which the fluid is to be forced. Thus, I may control the amount of fluid. dispensed by reason of the size of the discharge opening.

With reference to the drawing, Hidesignates the lower part of a spherical container and H the upper part thereof. These parts telescope as at E3 and are secured together :by solder, blEW ing, 01" such equivalent means at M. A thread-ed opening 1:5 with an inwardly extending boss ii -'3 is providedin the lower part tit-0f the container and receives a valve 11 which is threaded into the opening t5 and is provided with an intermed-i ate wall 18 having an opening 9 closed by a ball 20 pressed against this closure by a spring 24 abutting against a plug 22 in the threaded opening' 23 atone end thereof. An opening 124 is provided in this plug. some means are threaded into the internal portion 12:5 of the valve for foreing or 'fluid into the' container until: a certain pressure exists, such :for instance as possibly 25 9 lbs. The fluid under pressure will be in the form of a Vapor 2G;

The other or upper part i 1| of the container is provided with an opening 3'8 having an internally extending collar .3! for the reception of ;a time valvedesignated generall 32 and comprising a body 33 which is secured in the opening and to the collar 31 by some sort of solder :or brazing means :34.

This body is provided with a bore :34 and a larger bore 3.5. This larger bore 35 receives a plate 36 having an opening- 31' therein, the lower edge of which'provides a valve seat 38 which is closed by a ball valve 39. A plunger 39" is slidable in the bore '34, has a cup 49 at its upper end to receive the-ball, and is urged upwardly by a spring ii which abuts, as at 42', upon a bracket which is fixed to the body 33 of the valve. This plunger 39 is hollow as at 43 and is provided with an extension tube 44 which projects centrally through the spring 4| and moves with the plunger. A cup 45 is also secured to this plunger to move with it and slidably' receives the portion 46 of the body 33. limited (ischarge of fluid which may exist in the There is suflicient clearance to permit a portion 48 below the valve body portion 46. Fluid is admitted to the portion 48 of the cup through openings 49 and 50, the opening 49 being closed by a ball valve urged toward its seat by a spring 52. I

The bore 35 has a block 55 inserted in it, which block engages a washer 56 which is in contact with the plate 36 and has an opening in it registering with the opening 37 in the plate 39. This block has a chamber 5? from which there extends a conduit 58 registering with a conduit 59, and one of these conduits will be of a predetermined size so as to govern the amount of discharge of the fluid within the container therefrom. The larger the diameter the more fluid will be discharged during the time that the valve is open. A stem 60 is slidably mounted through the bore '6! in the block 55 and a round soft resilient packing 62 surrounds the stem 60 so as to prevent the escape of fluid along the surface of the stem. An abutment 63 of a size greater than the body portion of the stem is present to limit the movement of the stem or the soft packing 92 therealong. The stem is reduced as at 64 and of a size so as to loosely extend through the opening 31" of the plate 36 to engage the ball valve 39 so that when pressure is exerted on the finger piece 95 the stem may be forced downwardly to apply pressure on the ball valve 39 and force it from its seat 38.

When the ball valve 39 is forced downwardly by reason of pressure on the finger piece 85 the opening 31 will permit fluid in the container to pass upwardly through the tube M, as shown by arrow 66, and pass out through the openings 61 in the plunger 39 thence up through the spaces 68 about the plunger at its upper end, through the passage or opening 31, and thence out through the conduits 58 and 59 to the atmosphere.

At the same time that the plunger is forced downwardly, the cup 25 is also forced downwardly and by reason of the increased space or volume at 93 caused by movement of the cup downwardly away from the body part 46 of the valve, fluid will pass inwardly through the opening 99 and through the opening 50 to fill the space 68 full of fluid. Thereafter the pressure of the spring 41 will tend to move the cup upwardly, but by reason of the fluid in the area 48, this cup cannot be moved upwardly until this fluid is expelled from the chamber 48. The only way that this fluid may be expelled will be through the sliding fit at 6? between the cup 45 and the body 55. The area of this space between these two will determine the rate at which the spring M will raise the plunger and the cup 45 upwardly until the ball 39 engages the valve seat 38 and closes the valve. Thus the area or size of the opening space will control the time action of the operation of the valve.

I claim:

1. In a dispensing device in the form of a sealed container having an inlet opening and a discharge opening, a valve for controlling said discharge opening comprising a valve body secured to said. discharge opening, a conduit through said body for the passage of fluid from said container, a valve seat in said conduit, a ball closure for said seat, manually operable means for moving said closure from said seat, resilient means for moving said closure into engagement on said seat and means for delaying the action of said resilient means including a chamber having a wall thereof movable with said closure when moving the same from said seat for enlarging said chamber, an inlet port to said chamber, an outlet from said chamber and a resiliently movable valve means for controlling the passage of fluid through said ports.

2. In a dispensing device in the form of a sealed container having an inlet opening and a discharge opening, a valve for controlling said discharge opening comprising a valve body secured to said discharge opening, a conduit through said body for the passage of fluid from said container, a valve seat in said conduit, a ball closure for said seat, manually operable means for moving said closure from said seat, resilient means'ior moving said closure into engagement on said seat and means for delaying the action of said resilient means including a chamber having a wall thereof movable with said closure when moving the same from said seat for enlarging said chamber, an inlet port to said chamber and outlet port from said chamber and a spring urged valve for controlling the passage of fluid through said ports.

3. In a dispensing device in the form of a sealed container having an inlet opening and a discharge opening, a valve for controlling said discharge opening comprising a valve body secured to said discharge opening, a conduit through said body for the passage of fluid from said container, a valve seat in said conduit, a ball closure for said seat, manually operable means for moving said closure from said seat, resilient means for moving said 010- sure into engagement on said seat and means for delaying the action of said resilient means including a chamber having a wall thereof movable with said closure when moving the same from said seat for enlarging said chamber, an inlet port to said chamber, an outlet port from said chamber and means for controlling the passage of fluid through said ports.

ROBERT STEVENSON.

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

UNITED STATES PATENTS Nm'nber Name Date 39,086 Williams June 30, 1863 420,327 Blessing Jan. 28, 1890 506,221 Gilcher Oct. 10, 1893 517,550 Messinger Apr. 3, 1394 676,009 Ripper June 11, 1901 698,539 Mason Apr. 29, 1902 814,975 Mason Mar. 13, 1906 1,041,445 Dittrich Oct. 15, 1912 1,626,939 Kooperstein May 3, 1927 FOREIGN PATENTS Number Country Date 22,682 Great Britain Dec. 31, 1903 of 1903

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