US1485561A - Fluid-dispensing device - Google Patents

Description

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' FLUID DISPENSING DEVICE Filed Feb. e. 1922 Waffles/ @155/ J3" VEJ] El Patented Mar. d, i924.

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CHARLES H.V JOY, JR., AND LOUIS J. SAU'ER, OF CHICAGO, ILLINOIS, ASSIGrNORSv TO CHARLES H. JOY, OF CHICAGO, ILLINOIS. f

FLUID-DISPENSING DEVICE.

Application filed February 6, 1922.

T all whom t may concern Be it known that we, CHARLES H. JOY, J r., and Louis J. Sauna, citizens of the United States, and residents of the city of Chicago,

in the county of Cook and State of Illinois,

have invented certain new and useful Improvements in a Fluid-Dispensing Device;y

quickly emits the contained fluid, but prevents dripping' and waste'thereof.

With these and other objects in view, which will become more apparent in the fo-llowing description and disclosures in the drawing, this invention comprises the novel mechanism and combinations hereinafter described, and more particularly pointed` out and dened in the appended claims.

In the accompanying drawings, which illustrate a preferred embodiment of this invention, and in which similar reference numerals refer to similar features in the different views:

Figure l is an elevational view of our dispensing device.v

Figure 2 is a, top plan view thereof..`

` Figure 3 is a central 'vertical section through the device with a portion of the operating handle broken away.

Figure 4 is a section on the line 4 4 of Figure 3.

Figure 5 is a fragmentary elevational view upon a reduced scale.

As shown on the drawings:

In referrinoV now to the drawings, it will be noted that our dispensing device comprises a fluid container consisting of'a hollow cylindrical body portion l having a concave bottom 2 lsecured thereto in any wellknown way, said-bottom being provided with a nozzle 3 having a relatively restricted outlet port 4 in which a ball valve 4L is seated which is urged upwardly against its seat by a spring 4b. The ball valve 4a is mounted upon a rod 4c which extends into the container where it has adjustably mounted thereon of the piston.

Serial No. 534,336.

aball 4d by a' threaded connection, and a check nut may be screwed upon the upper end of the rod to lock the ball 4d in place. A plurality of spaced guide pins 4e extend through apertures in the nozzle 3 and slidingly embrace'the circumferences of the balls 4' and 4d and form a guidew'ay therefor to prevent tilting of the rod 4C and ball valve. When the piston descends suiiiciently the ball 4d will close the port'4; the length of the effective discharge stroke 'therefore depends upon the position ofthe ball 4d on the rod,

' which can be adjusted to increase or decrease the amount of discharged fluid, as is obvious. This construction therefore provides means for varying the amount of discharged fluid, and acts as a limit for the'amount discharged. The'port 4 merges'into an enlarged cup-shaped recess 5, the end of the spo-ut or nozzle S'beingl formed 'by a partispherical and hollow cap piece 6 secured upon the nozzle 3 in any approved manner as by a screwthreaded connection and provided with an inwardly beveled restricted outlet port 7. The hollow form of the cap piece 6 and the cup-shaped recess 5 provide a discharge chamber of sufficient size to allow proper lateral contraction of the fluid therein for a purpose to be later explained.

A piston 8'is -supported for reciprocal movement in the body portion l and is provided with a rod 9 secured centrally thereof lin any approved manner, 'as by being screwthreaded therein, the rod extending through a central aperture in the cover 10 with substantially an air-tight tit. The cover 10 may be provided with external screw threads upon its lower end which yis recessed so as to bring the outer surface of the cover flush with the outer surface of the body portion, and the upper end of the body portion may be internally screw-threaded to receive the threads of the cover, whereby an annular shoulder l1 will be formed by the lower end of the cover to limit the upward movement However, instead of a screwthreaded connection, the lower end of the cover and the upper end of the container may be reduced upon opposite sides, as shown in Figure 5,' to provide a slidable telescoping connection, and the piston rod 9 may be provided with an abutment 9a in the form of a collar engaging the top of the cover to limit the upward movement of the piston. It should be particularly noted that the cover is sufi'iciently deep to providev an appropriate air chamber in which the air becomes rarefied through downward move mentl ofv the piston.

The upper end of the piston. rod 9 extends sufciently beyond the top of the cover to provide a proper operating or compression stroke. A bifurcated operating lever 12 is pivotally connected intermediate its ends to the piston rod 9. One end of the lever is provided with a handle 13 and the other end is'pivoted to a link 14 which extends downward adjacent the device and is pivoted to a bracket 15.

In order that the dispensing device may be conveniently supported, some attaching means may be provided. In the present instance we have illustrated an apertured lug 16 extending from the body portion for reL ceiving a supporting` rod or the like, and a set screw 17 screwing through the wall of the lug whereby the device may be clamped to the rod.

In using the device, the shaving cream or fluid is put into the device by removing the cover and piston as is obvious. These are then replaced and the device is ready for use. When it is desired to obtain some shaving cream or fluid from the device, the handie 13 is pressed downwardly whereby the piston compresses the fluid and forces back the spring-pressed ball valve la and ejects the fluid through the nozzle, at the samey time substantially filling the discharge chamber. As the piston descends, the air in the air chamber above the piston becomes rarefied and creates a partial vacuum, so that when the handle is released and the compression of the piston ceases, the air will rush in through the port 7 due to the smaller pressure on theupper surface of the piston. As the air rushes in through the port 7, it will force the shaving cream or fluid back orV upward and also in lateral directions creatingthereby an upwardly dished or cupshaped depression or meniscus in the cream or fluid at the port 7, which, on account of the viscosity or cohesion of the cream or fluid, will retain its shape and prevent the cream or fluid from dripping or flowing out until the piston isV again operated. At the same time, the ball check valve 11a will spring into its position and prevent the fluid inthe container from gradually flowing into thedis'- charge chamber and breaking the meniscus.

Itl is therefore characteristic of this invention that a partial vacuum is created in the dispensing device creating unequal pres'-v suresy above and below the piston whereby the air is caused to rush in through the port 7 to equalize the pressure and createa partispherical or dish-shaped film or meniscus over the outlet port, and that a check valve is used to prevent the weight of the fluid fromY breaking the meniscus.

It therefore follows thatthe aforedescribedl dispensing device is not likely to drip when not in use, but will always remain in aik cleanly state.

lVe are aware that numerous details of construction may be varied through a wide range without departing from the principles of this invention, and we therefore do not purpose limiting the patent granted otherwise than necessitated by the prior art.

`We claim as our invention:

1. A fluid dispensing device comprising a hollow cylindrical body portion adapted for i receiving the fluid, a piston adapted for reciprocating in said body portion, a cover portion comprising a relatively deep cylindrical member removably attached to said bodyportion for forming a chamber above the piston and having an openingl in its top for receiving the piston rod, means for limiting the movements of said piston to sube stantially the depth of said body portion, a nozzle at the lower end of said body portion, saidnozzle having an upwardly' extending parti-spherical recess for the purpose set forth. j

2. In a fluid dispensing device, a container having a lower fluid holding, portion and an upper air chamber, a piston reciprocable in said fluid holding portion, means for preventing the movement of said piston above said fluid portion, a nozzle projecting from the lower end of said container and having an upwardly extending concave recess communicating with said container, and a pair of connected valves for controlling the flow through said nozzle.

8. In a fluid dispensing device, a container, a piston reciprocable in said container, a nozzle projecting from the lower end of said container and having an upwardly extending concave recess communicating with the interior of'said container, guide rods supported by said nozzle, a double headed valve structure guided'by said rods for controlling the passage into said container, a semi-spherical cap having' an outlet portv attached toV said nozzle, and a spring supported by saidy cap and bearing against said valve structure.

ln testimony whereof, we' have hereunto subscribed our names in the presence of two subscribing witnesses.

cHanLEsn. Jer, JR. Louis J. sauna.

W'itnesses CARLTONVv HILL, JAMES M; OBRIEN.

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