US2248814A - Fluid dispenser - Google Patents

Description

y 1941- N. w. DE FREES 2,248,814

FLUID DISPENSER y Filed Aug. 19, 1940 &

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/NVENTOE Abe/1004s W DE Fesss Patented July 8, 1941 UNITED STATES PATENT OFFICE FLUID DISPENSER Nicholas W. De Frees, Hastings, Minn., assignor to H. D. Hudson Manufacturing Company, Chicago, 111., a corporation of Minnesota Application August 13, 1940, Serial No. 353,178

9 Claims.

The present invention relates to an apparatus for dispensing fluids under pressure, and particularly disinfecting and insecticiding fluids, and to portable drinking fountains, and the like.

Apparatus of this character usually includes 'a self-contained pump for building up the pressure used in dispensing the fluid and in accordance with usual construction, the pump appara'tus is mounted upon the closure member of the fluid-containing vessel.

In apparatus heretofore used, difficulty has been experienced in providing pressure tight connections between th pump apparatus, the closure, and the vessel wall, and in providing a construction which may be economically manufactured.

It is an object of the present invention to provide an improved fluid dispensing apparatus which is economical to manufacture and in which the closure and pumping apparatus ma easily be kept'in pressure tight relationship in respect to the remaining portions of the apparatus.

More particularly, it is an object of the invention to provide a pressure containing vessel having an opening of the screw-closure type in which the pump member may be maintained in pressure tight relationship to the closure and the closure maintained in pressure tight relationship to the vessel wall.

It is a further object of the invention to provide in' such' a fluid dispensing apparatus, a construction whereby a single gasket means may be utilized for maintaining a pressure tight connection between the pump cylinder and closure member and between the closure member and the'vessel wall.

Itis a further object of the invention to provide an improved closure which admits of ready filling and emptying of the apparatus.

Other objects of the invention are those inherent in and implied by the invention herein illustrated, described and claimed.

This invention is illustrated with reference to the drawing in which 1 Figure 1 is an elevational view, partly in section showing the apparatus of the present invention.

Figure 2 is a top view of the closure member.

' Figure 3 is a bottom view of the pump cylinder.

Throughout the drawing, corresponding numerals. designate corresponding parts.

The apparatus of the present invention consists of a fluid containing vessel, generally designated I0, having a cylindrical side wall II, which is crimped over at the bottom edge I2 2 30, after assembling to the flange 23 and to the The end walls l5 and I6 are assembled mm the cylindrical walls II, and the wall 'II is then rolled inwardly so as to' form shoulders I9 and 20' which thereafter resist' outside movement of the bottom and top end walls I5 and"; from pressure within the tank.

Where the tank is made of galvanized sheet metal, it is desirable to solder-seal the joint between the flanges I! and I8, and the cylindrical wall II, but where'the cylindrical wall II and' end walls are made of black iron, it is desirable, after assembling, to galvanize or tin the complete unit.

The central portion of the top wall It is de pressed upwardly as shown at 2| and is provided with an opening 22 divided by the out- Wardly extending flange 23. The flange 23 is formed during stamping of the end wall I6 and the metal of the flange 23 is accordingly coldworked during the stamping and drawing operation.

The flange 23 in effect forms a short upwardly extendingnipple which serves to receive the lower cylindrical surface of a ring member, generally designated 30. The ring member 30 may be constructed of the same or difierent metal than th'atof the end wall I6, but it is desirably made of a heavier gauge, or stronger and preferably more ductile metal.'

At the lower end of the ring member 30, there is provided an inturne'd flange 3|, which serves as a gasket seat, and at the intermediate portion of the ring member 39, there are a plurality of threads 33 which are preferably formed by rolling. The upper edge of the ring is flanged outwardly as shown at 34, and then the flange is pressed upwardly assho'wn at 35 so as to provide an inner recess 36 so'as to receive the funnel member, generally designated 40. The funnel member has a rolled upper edge M and a downturned central flange 42 of such shape and configuration that it fits neatly within the upwardly directed flange 35 of the ring member 30.

The funnel 40 may either be soldered or spotwelded to the flange 35 or, if desired, the ring funnel 40, may be spot-welded to each of the flanges and the entire unit coated with zinc or tin by a suitable dipping operation.

The closure member of the cover consists of a cap generally designated 50, which has a downturned edge flange having external threads 53 corresponding to those at 33 in the ring member 30, and internal threads 54. The upper central portion of the cap 50 is provided with a hexagonal protuberance 51, which has an upper surface 58. The upper surface 58 has a central cylindrical opening 60 and side portions BI and is hollowed out so as to present internal spaces 62. The center of the cap is flanged downwardly at 63 so as to present an opening 64 through which a pump rod 65 extends. The upper end of the pump rod carries a handle having a downwardly extending cylindrical part II upon which there are a pair of oppositely disposed lugs 12. The lugs are of a shape and configuration such that they will pass through the openings El and will be retained against upward movement within the spaces 62. It will be noted, as shown in Figure 1, that the space 62 has a forward portion 62a, which serves to prevent rotation of the handle Ill when the lugs 12 are pulled upwardly into said space.

Within the apparatus, there is a pump cylinder 8B, which is preferably made of sheet brass tubing. The upper end of the tubing has an outwardly extending circular flange 8|, which is preferably formed by rolling, and above the flange there are a plurality of threads 84 likewise preferably rolled into the tubing wall. These threads correspond to the internal threads 54 of the cap 50. At the lower edge of the pump cylinder, there is an internal rolled flange 85, which serves as a seat for the pump cylinder head 86, the latter being retained in place by crimping and soldering as shown at 81.

The center of the cylinder head 85 is rolled so as to provide downwardly extending ridges 88 and 89, between which there is a shallow groove 90. In the groove 90, there are a plurality of holes 9|. Within the area defined by ridge 89, there is an upwardly turned flange 92, which is internally threaded to receive a stud, generally designated 94, the stud being provided with four (4) finger portions 95, and a cylindrical barrel 96. The stud 94 serves to retain a valve Hill, which is normally spring-pressed upwardly by means of a spring Hll. The valve 10!) is preferably of resistant sheet rubber composition, fiber, or the like.

Upon the lower end of the pump rod 65, there is a pump piston consisting of a crimped leather washer I05 supported by means of a steel washer I06 and nut Ill! upon the rod.

The cylinder 8!! is assembled to the cap 50 by screwing the threads 84 of the cylinder into the threads 54 of the can. A gasket HE! is positioned between the flange Bi and the lower edge ill of the downturned flange 5| of the cap 50. Hence, as the cylinder 80 is screwed into the cap, the gasket H0 is compressed into fluid-tight relationship thus sealing the joint between the cylinder 8B and the cap 50. Thereafter, the cylinder 8!], cap 50, gasket HQ, and handle 10, as a unit, may be inserted into the opening defined by the flange 3| of ring member 30, and the cap 50 may be turned by means of the handle 10 so as to screw the threads 53 of the cap into the threads 33 of the ring member 30 until the gasket H0, which is carried by the cap-cylinder assembly, is brought into pressure-tight relationship against the flange 3i. It will thus be seen that by the improved construction herein illustrated, a single gasket I in may be utilized to seal the closure and to seal the pump cylinder to the closure member 30.

It is obvious that many variations may be made in the details of the construction without depart ing from the spirit of the invention herein illustrated, described and claimed.

I claim as my invention:

1. A device for dispensing fluids under pressure, a metal tank having an endwall, said endwall being provided with a circular opening, the metal of the tank being flanged outwardly around said opening, a circular internally threaded ring fitted in pressure tight relationship into the flanged opening, said ring being provided with an internal flange forming a gasket seat, said ring being positioned so that its inturned flange is within the confines of the tank flange so that the tank may be completely drained, a closure and pump assembly including a cover member threaded to be fitted into the opening of said ring, a flanged pump barrel coupled in pressure tight relationship to the cover member, a gasket between the pump flange and the cover member, said gasket being of a size to seat on the gasket seat of the ring internal flange, said pump barrel being insertible through the ring so as to permit the gasket to be forced into pressure tight seating engagement with the internal flange of the ring when the cover member is threaded into the ring.

2. A device for dispensing fluids under pressure comprising a tank having an outwardly projecting tank flange forming a circular opening in the tank, a ring having internal threads formed therein and having an inturned gasket seat flange formed at one end, fitted in pressure tight relationship into said tank flange, a closure member having an extending cylindrical portion internally and externally threaded, a pump cylinder having an end portion externally threaded and a flange adjacent the threaded portion, said pump cylinder being threaded into the internal threads of the cylindrical portion of the closure member, and gasket means between the closure member and the flanges of the pump cylinder and the ring.

3. A device of the type set forth in claim 2 wherein the gasket means is a single asket of a width sufficient to cover both the flange on the pump cylinder and the flange of the ring.

4. A device of the type setforth in claim 2 wherein the ring is made of sheet metal and has threads rolled therein for receiving the external threads of the cylindrical portion of the closure member.

5. A device of the type set forth in claim 2 wherein the ring is provided with a funnel extension at its outer end.

6. A device for dispensing fluids under pressure comprising a tank having a bulged out sheet metal endwall formed with an outwardly extending cylindrical tank flange, a ring provided with internal threads and with an inturned flange at one end forming a gasket seat, said ring being fitted into the tank flange and sealed in pressure tight relationship thereto with the inturned flange of the ring approximately even with the inside of the tank endwall adjacent the tank flange whereby liquids may be drained from the tank, a metal closure plug having a cylindrical part, said cylindrical part being externally 'threaded to be received by the threads of the ring, and internally threaded to receive a pump cylinder, a pump cylinder having a threaded end and a flange adjacent the threads, threaded into the cylindrical part of the tank closure plug, a gasket between the pump cylinder flange and the plug, said gasket extending outwardly beyond the pump cylinder flange so as to be seatable upon the internal flange of the ring when the cap and cylinder and gasket assembled together are screwed into the ring in the tank.

7. A device of the character set forth in claim 6 in which the sheet metal of the ring is relatively stronger than the sheet metal of the tank endwall.

8. A device of the type set forth in claim 6 in which the ring is provided with an outwardly flared filling funnel.

9. A device for dispensing fluids under pressure comprising a tank having a bulged out sheet metal endwall formed with an outwardly extending cylindrical tank flange, a ring provided with internal threads and with an inturned flange at one end forming a gasket seat, said ring being fitted into the tank flange and sealed in pressure tight relationship thereto with the inturned flange of the ring approximately even with the inside of the tank endwall adjacent the tank flange, the outer end of the ring being outwardly flanged to form a seat, a funnel having its smaller portion fitted into said seat, a cast metal closure cup having a cylindrical portion, the outer surface of which is threaded to be received by the threads of the ring and the inner surface threaded, a pump cylinder having an end threaded to be received into the said inner surface, said closure cup also being provided with a piston rod opening, a piston rod passing therethrough into the cylinder, a handle in the piston rod having a protruding lug thereupon, said closure cup being formed with an overhanging surface to receive and retain said lug.

NICHOLAS W. DE FREES.

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