US2959391A - Valve with sliding plunger - Google Patents

Description

Nov. 8, 1960 M. s. RAPAPORT VALVE WITHSLIDING PLUNGER 2 Sheets-Sheet 1 Filed Aug. 4, 1958JIIIIiII Wtt 2 mm,

INVENTOR. M VE'UA/ 5. EAPAPOET ATTUE/VE Nov. 8, 1960 Filed Aug. 4, 1958 2 Sheets-Sheet 2 Fla 5' 17 [24 I7 /6 J ll 7 I' I 1l l 23 INVENTOR. M YQO/V 5. PAPA/ 027' A TTOENEY United States PatentO VALVE wrrn SLIDING PLUNGER Myron S. Rapaport, New Rochelle, N.Y., assignor t Kenco Products Corporation, Englewood, N.J., a corporation of New Jersey Filed Aug. 4, 1958, Ser. No. 752,721

4 Claims. (Cl. 251-156) It is also among the objects of this invention to pro- I vide a dispensing valve which is substantially leak-proof.

It is further among the objects of this invention to provide a valve which may be manufactured readily and inexpensively.

It is still further among the objects of this invention to provide a valve which may be readily assembled and taken apart without tools.

In practicing this invention, there is provided a generally cylindrical body containing a substantially hollow plunger slidably mounted therein. One end of the plunger extends beyond one end of the body and the other end of the plunger carries a washer of suitable material which seats against an inlet in the corresponding end of the body. The plunger is so proportioned as to provide an annular space between the body and the plunger which forms a valve chamber. The plunger also carries a shoulder on its outer surface which is adapted to receive and retain an O ring in sealing position against the inner wall of the body. A spring bears against the shoulder and also bears against one end of the body.

The plunger is provided with one or more ports communicating between the interior of the plunger and the valve chamber.

The plunger is actuated by means of a yoke pivotally mounted on pivot pins placed on the exterior of the extended end of the plunger. The yoke has a cam surface which is adapted to bear against the end of the body and when the yoke is pivoted about the pivot pins, causes the plunger to withdraw partially from the body, permitting the liquid to flow through the inlet around the closure into the ports and axially through the. hollow plunger.

The yoke may be actuated either by a simple handle afiixed to one end thereof or by means of a pair of depending rods connected at one or more points bya transverse bar. In the latter case, the cup or glass to be filled is placed against these depending bars and causes the yoke to pivot, withdrawing the plunger and permitting flow of liquid.

In the preferred form of the invention, a small air passage is placed between the interior of the plunger and the valve chamber at a point intermediate of the ends of said plunger. This passage permits the rapid draining of liquid from the interior of the plunger and 2,959,391 Patented Nov. 8, 196,0

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a reasonably sharp cut-ofi of flow when the valve is closed.

In operation, the valve is attached to the lower portion of a large vessel containing the liquid to be dispensed. The handle is depressed, causing the yoke to pivot about the pivot pins and the cam surface to bear againstthe cap. This in turn causes the plunger and the closure at its end to retract from the inlet.

Liquid may then flow through the inlet into the valve chamber, through the ports and through the hollow plunger to the outlet where it pours into the receptacle to be filled. Upon release of the handle the pressure of the spring exerted against the shoulder forces the plunger and the closure into seeking contact with the inlet opening. The valve is then closed since no liquid may flow into the inlet. At this point, the air passage permits the liquid which might be trapped within the hollow plunger, to drain immediately. For best results the air passage should be at an angle with the axis of the plunger, with the inner opening below the outer opening.

In the accompanying drawings constituting a part hereof and in which like reference characters indicate like parts,

Fig. 1 is a partial cross-section of the preferred form of this valve in open position;

Fig. 2 is a view of the valve in closed position, partly in section and partly broken away for clarity;

Fig. 3 is a sectional view of the manner in which the cap is affixed to the body;

Fig. 4 is a plan view of the cap;

Fig. 5 shows the manner in which the preferred form of yoke is affixed to the pivot pins;

Fig. 6 is a plan view of the yoke and handle, and

Fig. 7 shows an alternate form of yoke with a depending bar arrangement.

Container 11 is provided with an opening at or near the bottom thereof into whichvalve 1 is mounted. Valve 1 is secured by clampingring 8 which bears againstclamp washer 9, which sealscontainer 11 between thewasher 9 and sealingwasher 10.

Thevalve 1 is composed ofbody 2 in which is slidably mountedplunger 3. At the upper end ofplunger 3 isclosure 6 adapted to seat againstinlet 7 and which is of any suitable sealing material. Ports 4 are provided near the upper end ofplunger 3 and on the exterior surface of said plunger,shoulders 12 are mounted. These shoulders serve a dual purpose in that they retainO ring 13 in sealing position against the inner wall ofbody 2 and provide a surface against which one end ofspring 14 bears. The other end ofspring 14 rests against the inner surface ofcap 15 which in turn is threaded on the end ofbody 2.Cap 15 has anopening 21 corresponding to the cross-section ofplunger 3 and also hasslots 22 added thereto. Mounted on the extended end ofplunger 3 arepivot pins 19 which are adapted to seat inpivot holders 24 onyoke 17. Yoke 17 is also provided withcam surface 18 which bears againstcap 15, causingplunger 3 to partially withdraw frombody 2 against the pressure ofspring 14.Air passage 5, angled downwardly and from the outside to the inside ofplunger 3, is provided to permit rapid draining of the hollow plunger when the valve is closed.

In assembling the valve,spring 14 is placed onplunger 3 by rotating said spring to enable it to pass overpivotpins 19.Cap 15 is then slipped overplunger 3 as shown in Fig. 3, withslots 22 allowingpivot pins 19 to pass through the cap. Once this has been accomplished,cap 15 is rotated so thatslots 22 are out of alinement withpivot pins 19. Yoke 17 is provided with aninclined face 23 which readily enables the yoke to he slipped overpivot pins 19 so that said pins are held securely inpivot holders 24 by force ofspring 14, as is shown in Fig. 5.

For ease of operation,yoke 17 is provided withhandle 16 which terminates inknob 20.

Alternatively, as shown in Fig. 7,yoke 27 is provided with acam surface 25 andpivot holders 24. Inclinedface 23 permits the entire unit to he slipped into engagement withpivot pins 19 in a manner similar to that shown in Fig. 5. Dependingvalve actuator 28 is composed of vertical members and at least one horizontal member which provide a surface against which the receptacle to be filled (such as a glass or cup) may be placed, and pressure brought to bear to causecam surface 25 to actuate the valve in a manner similar to that described for the preferred embodiment.

While only two specific embodiments of this invention have been described, nevertheless the invention is to be broadly construed and such changes as are apparent to one skilled in the art may be made without departing from the scope and spirit thereof and this invention is to be broadly construed and not to be limited except by the character of the claims appended hereto.

I claim:

1. A valve comprising a body, a plunger slidably mounted in said body and extending beyond one end thereof, an annular space between the body and the plunger forming a valve chamber, a shoulder on said plunger receiving and retaining an 0 ring in sealing position against the inner wall of said body, a spring bearing against said shoulder and against said one end of said body, an inlet in the end of said body remote from said one end, said inlet communicating with said chamber, the end of said plunger nearest said inlet being provided with a closure sealing off the inlet when the valve is in the closed position, said plunger being hollow and having an outlet on the end remote from the closure, a port in said plunger located inwardly of said closure and connecting the valve chamber with the interior of said plunger, said plunger having an air passage extending from said valve chamber to the interior of the plunger, said air passage being at an angle with the axis of the plunger with the inner end of said passage nearer said extended end of the plunger, and means for actuating said plunger so as to withdraw the closure from the inlet and permit flow of liquid through the valve.

2. A valve according toclaim 1 wherein the means for actuating the plunger comprises a pivot pin projecting outwardly from the extended end of said plunger, a yoke on said pin and provided with a cam surface bearing against said one end of said body, an inclined face and a pivot holder admitting ,and retaining said pivot pin on said yoke, and means for causing said yoke to pivot about said pin.

'3. A valve according toclaim 2 wherein the means for causing said yoke to pivot is a depending valve actuator operated by pressure of a vessel to be filled.

4. A valve according toclaim 2 wherein said one end comprises a cap provided with an opening in the center thereof through which said plunger extends, said opening having a slot adjacent thereto to permit the passage of the pivot pin therethrough.

References Cited in the file of this patent UNITED STATES PATENTS 564,242 Burlich July 21, 1896 2,756,910 Snyder July 31, 1956 2,777,675 Stelzer et al. Jan. 15, 1957

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