US2129511A - Dispensing nozzle - Google Patents

Description

Patented Sept. 6, V1938 UNITED 4STATES PATENT omer.

msPENsING NozzLE tion of Connecticut Application 15, 1937, Serial No. 142,844

6 Claims.

and precise control of flow when only small quantitiesare required; and third, an exterior form which will offer ya convenient grasp to the operator as well as a symmetrical contour with no irregularities beyond the' classic 'form of trigger and trigger guard long associated with manually operated controls. These features are, more specifically, effected by a valve construction wholly contained within the tubular section of the body, and at the same time creates a nozzle with an attractiveA contour or artistic balance harmonious with the more modernistc trend of service station design.

A further object is to provide a straight flow nozzle of the above nature` in which the body part serves as a hand gripping portion for operating the valve control handle, and the motion of the handle in turnis transmitted to the interior of the casing to actuate a valve by means of an entirely enclosed bell crank lever and an exteriorly projecting plunger pin.

A- still further object is to provide a liquid flow control means to operate in conjunction with the control valve for the purpose of preventing the annoying hammering` or chattering effect of the control valve when slowly opening the valve for thempurposepf drawing off aevsmall quantity of liquid or when slowly closing off the valve` just prior to the completeshut-off of the nozzle in approaching the predetermined amount` of liquid to be dispensed.

Other objects and advantages of this invention will be apparent and more clearly understood from the following description which,.taken, in connection with the accompanying drawing, discloses a preferred embodiment -thereoL In the drawing:

Fig. 1 is a front velevation of the dispensing` nozzle, shown attached toa delivery hose and a discharge spout, and embodying the-principles of the invention.

Fig. 2 is a-longitudinal sectional View through in lclosed position. Fig. 3 is la transverse sectional view through the same on an enlarged scale, with' the valve the nozzle taken along the broken line 3-3 of Fig. 2, locking in the direction of the arrows.

Fig. 4 is an enlarged side elevation of the flow regulator shell, per se..

Fig. 5 is a perspective view guide member, per se.

Referring to the drawing by reference characters in which like numerals designate like parts of the valve'stem 5 y throughout the several views, the numeral I0 designates generally the nozzle body, comprising a relatively straight tubular portion 'II having a slightly enlarged tapped rear end I2 for receiving a coupling connecting nut I3. The connecting nut I3 permits 'the nozzle I0 to be conveniently attached to the conventional form of liquid conduit hose I4 having the usual terminal coupling connection I5.

'Ie'fhe forward endof the nozzle body I0 is prov vided with an interiorly reduced threaded part I6 for detachably receiving a discharge spout I1 20 by means of an intermediate connecting nut I8. While the spout I1 is here shown as being made of rigid tubing, it is to be understood that the exible type of tubing may be used equally well withinl the spirit of the invention.

The interior of the tubular portion I I is divided by an intermediate partition wall I9 which serves to divide the tubular portion II into two separated chambers IIa and IIb. `The ,partition wall I9 is provided with a direct opening or fluid 80 l Apassage 2|) concentric with the bore of the rtubular portion I I and a beveled valve seat '2I. The uid passage is controlled by a sealing washer Q22 of the nature of a poppet valve preferably made of a non-metallic composition, such as 35 --Tl`1iokal, which substance is resistant proof 'against the solvent characteristics of gasoline.

The sealing washer 22 is Isupported in a cupped disc 23, both parts of which surroundl a reduced portion 24a of a valve l stemA 24 disposed co- 40 axially within the hollowed 'chamber of the nozzle body I0. Seatedagainst the forward face of the sealing washer 22 is the base end of a flow regulator cylindrical shell 25, and all of them parts, 22, 23 and 25 supported by the reduced 45 portion 2id, are adaptedto be tightly clamped' against a' shoulder 24h on valve stem 24 by means -of a clamping nut 26.

Inorder to control the volume of liquid passing through the fluid passage 20 under pressure in- 50 cidental to the slow opening and closing operation of the valve without dangerof producing a hammering or chattering effect,fthe ow regulator shell is provided with a plurality of specially shaped openings or holes ^21 about its 55 peripherial wall. 'Ihe forward part of these openings, as best viewed in Fig. 4 are made substantially square or rectangular shaped 21a and converge into gradually restricted portions 21h, the purpose of which will be more fully described later. While there are only four of these special shaped openings 21 shown in the shell 25, it is obvious that the size and number of these openings may be varied to suit the requirementsl of the particular nozzle to which the shell may be applied without essentially ailecting the operation and still accomplish the same'results.

From an inspection of Fig. 2, it can be seen that the regulator shell 25 further' serves as a support bearing or guiding means for the forward end of the valve stem 24 with respect to the partition wall I9. 'I'he rear end of the stem 24, in turn, is associated With a spider-like support 28 provided with appropriate fluid passages 28a and adapted to -be threadedly engaged into the extreme base part of the threaded enlarged section |2 of the nozzle I0. 'Ihe spider support 28 is formed with a concentric guide sleeve 28h for slidably receiving and supporting the adja cent end of the valve stem 24. A coiled cornpression spring 29 surrounds the valve stein 24 and is interposed between the washer support shell 23 and the spider support 2B and forms a means for normally holding the valve washer 22 in closed seated position against, the partition I9.

In order to provide convenient means for actuating the valve, the forward and rear ends of the nozzle body Il) are formed with relatively short and long projections 30 and 3| respectively, depending integrally from the lower part of the body I0. `The forward short projection 30 is provided with a bifurcated end 33 for hingedly receiving one end of a valve actuating trigger or handle 34 by means of a fulcrum pin 35. 'I'he Opposite end of the handle lever 34 is disposed and guided in a vertical slot 36 cut, out of the long depending rear projection 3|. In order to Adeilne the space in which the lever '34' operates, l provision is made of guard member 31 having its forward and rearends connected to the short and long projections 30 and 3| respectively, as by means of screws 33.

The swinging motion 'of the handle 34 when operated is adapted to be transmitted to actuate the valve washer 22 and associated parts by means of a plunger pin 39 and a bell crank lever 4l, Moreispe'cically, the bell crank lever 4|) is entirely enclosed within the. forward hollow chamber Ila of the tubular portion and is provided at one end with an enlarged bearing 4| hingedly supported on a transverse pin 42. This pin 42 .is seated in a suitable socket l||Il provided in an embossed part .Illa of the body l0. The transverse pin 42 is removably retained in the socket |||b by means of a socketed nut 44, tnreadediy engaged in a tapped hole in the embossed part Ila, all as best shown in Fig. 3. The tapped hole 45 is preferably of a tapered or pipe threaded construction v,to prevent leakage. 'Ihe opposite end of the bell crank lever 43 is provided with a cam head 46 engaging against a headed insert pin 41 alxed tothe further reduced end 24e of the valve stem 24. This pin 41 is made of metal material of a harder composition than either the bell crank 4l or. the stem 24 for the purpose of eiecting greater weai-,re-

sistance between the working parts.

The plunger'pin 39, previously mentioned, has its axis disposed substantially at right angles to theaxisofthebodytubularportion andis Yopen position by imparting a slight to the lever 34. 'I'he initial uncovering of the slidably engaged in a projecting boss 43 depending from the lower part of the body l0 adjacen the short projection 30. 'I'he slidable connectior of the pin 32 within the boss 48 is rendered llquic proof by means of a packing 49 surrounding saic` pin 32 and compressed in a pocket 50 provide:l in the boss 48 by means of a gland sleeve 5| anc' a cooperative bonnet nut 52 engaging the exterior threaded part of the, boss 49. ,The exterior surface of the nut 52 is provided with a relatively heavy straight line knurl .to facilitate the operag tion of the same.

vmore eilicient and rigid slidable bearing construction between said gland 5| and the plunger pin 39. This is produced in providing an intermediate surrounding hub 5|a on the gland sleeve 5| adapted to have frictional rotatable abutted engagement with the interior surface of said nut 52. 'I'his gland sleeve 5| is then formed with an extended portionV 5|b projecting through and beyond a corresponding alined opening in the nut 52, and perforce embraces a longer section of the pin 39 than was possible with the ordinary conventional gland'construction. An inspection 'of the above device further reveals that there is no chance for the nut 52 to come into wearing contact or engagement with the plunger pin 39 and consequently precludes any harmful wearing effects upon said pin 39.

Motion is transmitted from handle 34 to bell crank 40 through pin 39 wherein the interior end of the plunger pin 39 engages the bell crank lever 40 and the exterior end of thepin outside of the body I0 engages with the angular face of an embossed part34a integral with the handle 34.v

embrace the straight section of the hand lever 34.

The nozzle may then be conveniently carried to a container to be illled, after which the lever 34 is moved toward the body l0 by the fingers of the operator.- 'I'his operation results in moving the plun-ger pin 34 inwardly which causes the bell crank to pivot within its'respective chamber Ila and move thevvalve stem rearwardly or tothe right as viewed in Fig. 2 in a linear direction against the resistance of the spring 23. 'I'his linear movement of the plunger 24 will perforce carry the sealing washer 22 and flow regulator shell 25 with it to uncover the valve seat 2| for permitting a flow of iluid from the chamber ||b I through chamber ila out through spout |1. When itis desired to shut oil' the flowfthe pressure of operators fingers is released from the lever 34, whereupon the spring 23 closes the valve and returns the intermediate linkage (bell crank 43, plunger pin '39) and handle lever 34 back to normal position.

When it is desired to control the iiow of fluid through the nozzle with a ner precision, the valve washer 22 may be retained in movement washer 22 from the seat 2| causes the liquid to exert backward pressure on the valve face o1' the washer 22 due to the fact permitted to `flow through the opening 23 in the partition wall I9 until such time as the more constrictedlportion 21h of the opening in tne. shell 25 clears the bevel seat 2|. This initial' backward pressure on the washer 22 oonduces to apartially I that liquid is not 7 :naomi prevent the chattering or hammering of the valve that is prevalent in a construction where the ilow of iiuid is unobstructed at the instant the valve is opened or closed.

Since the regulator shell 26 has a relatively close sliding nt in the partition iiuid passage 20, the iiuid must necessarily rst' pass inwardly -through the more constricted portions of the converging part 21h oi the openings 21 in shell 25 when the valve is rst opened, and the iiow of liquid is proportionately increased through the nozzle as the shell 25 is progressively moved to the right to cause a relatively greater area of the openings 21 to clear by the valve seat 2l. Ob-

viously, in shutting oi! the nozzle, the ow of duid will be progressively decreased to a degree much morev than proportional to the movement of the lever, so that a small amount of flow can be eiiected by the operator to arrive at the exact quantity oi iluid desired. since the acute angle of the. feeding end 2lb of the opening 21 brings a rapidly lessening area of now into cooperation with valve seat 2l of the, partition wall i9.

While only on form of the invention is presented herein for the purpose of exemplication, it will be appreciated that the invention is susceptible of embodiment in other structurally.

modiiled forms coming equally vwithin the scope of the appended claims.

What is claimed is:

1. In a dispensing device, a substantially tubular shaped body designed to serve as a handle tomanipulate the device, an intermediate partition wall within said body having a iluid oriilce and adapted to divide the hollow interior of said body into two separated fore and rear chambers,

a spring operated valve means coaxially mounted within said body for closing said oriilce, a pair of brackets integral with and depending from the iore and rear ends of said body, a handle lever Vpivoted to said tore bracket and having a guiding connection in said rear bracket, -and linkage means connecting said valve means with said lever to operate said latter means in one direction, said linkage means comprising a bell crank located in the fore chamber and a plunger pin-extending outside o! said body and operated from an intermediate portion'of said lever.

2. In a dispensing device, a tubular shaped l'ippins handle ior beraasprlngoperltedvalvemeans coaxially g mounted within said bodyA for closing said oripair of brackets integral with and dependandrearendsofsaid body,a said disposed vagainst the adjacent pivoted outside lswunginwrardly `faces, and a plunger pin slidably mounted in said boss and having its inner end slidably engaging one of said cam Vfaces and its outer end slidably engaging an intermediate portion o said handie. l

3. In a. dispensing device, defined as in claim 21, wherein an adjustable stulng box is associated with said boss to eiiect liquid tight slidingiit with said plunger pin, and a handle guard is connected between the depending brackets for dening the space in which the handle lever operates.

4. In a dispensing device, a. tubular shaped casing having a hollow interior for permitting substantially a straight iiow of iiuid therethrough, said casing designed to form the handle by which the device is held and manipulated, a partition wall having a restricting oriilce and serving to divide said hollow interior in to fore and rear chambers, a valve stem coaxially disposed in said rear chambers, a spring operated poppet valve carried by said stem for normally closing said orice, a bell crank disposed in said fore chamber and having a cam head engaging the adjacent end of said stem, a pin transversely path of said plunger pin and having means at its intermediate portion to engage said pin and transmit motion to said valve stem through said bell crank and plunger pin.

5. In a dispensing device defined as in claim 4, wherein said transverse pin is removably mounted in said casing to permit removal oi said bell crank for repair and/or assembly purposes.

6. Ina dispensing device a hollow body member comprising a relatively straight tubular section adapted to permit a straight now ci fluid therethrough and serving as a handle means for said device, avalve means, a supporting member for said valve means disposedentirely within said bcdyand movable coaxiaily therewithin. a plunger pin passing out ci said body transversely to the axis of said body, a bell-crank pivotally mounted within said body and having angularly cam face for slidable engagement ends of said pin and supporting member respectively, and a handle lever oi said body and toward said body transmitting motion to said valve' through said intermediate plunger pin and bell-crank.

manson n. roumains. Joan n. Tonnes..

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