US2073751A - Dispensing nozzle - Google Patents

Description

March 16, 1937. F, N|ESEMANN l 2,073,751

DI SPENS ING NOZZLE Filed Sept. 150, 1929 Patented Mar. 16,1931

UNITED".s'rATiazs PATENT 'OFFICE aovsnsr msrENsmG NozzLa Fritz Niesemann, Pittsburgh, Pa., assigner to t Pittsburgh Equitablev Meter Company, Pittsburgh, Pa., a corporation of Pennsylvania Application 'September 30, 1929,'Serial No. 396,283

1s claims. (ci. 217-20) The present invention relates'togasoline dispensing nozzles. v

Itv is a recognized iactthat certain types. oi gasoline measuring meters used in' connection with pressure gasolinevdispensing apparatus register'inaccurately'on ilow's below a predeter mined minimum rate, which rate varies somev Such nozzles can be manipulated by throttling 2o the flow to'a very low rate, sothat the register of the meter will not give a reading showing the correct dow.

, Itis a primary lobject of the present invention to provide a gasoline dispensing nozzle wherebythe above noted objections to' existing nozzles areentirely overcome.

- It is a further object of the invention to provide a gasoline dispensing nozzle comprising flow control means, said means adapted to insure a iiow of gasoline above a predetermined' rate whenever the .valve is manipulated.

It is a still further object of the invention to .provide a gasoline dispensing nozzle comprising flow valve, and manually operable means for successively operating said minimum ilow valve and said main ow valve respectively.

It is a still. further object of the linvention to provide a gasoline dispensing nozzle comprising a flow control valve, hand actuated means assoelated with said valve, and' quick acting means operatively connected with said hand actuated means for reecting a predetermined minimum iiow at a rate that is not variable with theamount oi movement. of said hand actuated means. i

With the above objects in view as well as others that will become obvious during the course of thev following disclosure reference will be had to the accompanying drawing forming part of same and wherein: Y

Figure 1 is a longitudinal sectional view of a nozzle constructed in accordance with 'a preferred embodiment of my invention, certain' 6 parts being shown in elevation.

Figure 2 is a broken horizontal sectional view vsubstantially on a plane represented by line `22 in Figure 1.

Referring to the `drawing by reference chari0 4acters in which like characters designate like parts I IA designates the nozzle .body comprising the substantially long tubular portion I2 and a similar portion I3 disposed at an angle to'porr tion I2 and communicating therewith. One en"d\\ 15 of portion I2 is internally threaded for detachable connection therewith of an externally threaded end of a connecting member It whose opposite end is reduced and internally threaded,

as indicated at it, for.. detachable connection 2o therewith of one end of a ilexible delivery hose. The free end of portion lt is likewise internally ythreaded for detachable connection therewith of an externally threaded `end oi' a connecting member it whose opposite end is reduced as 25 indicated at' ll, for the reception of one end of the tank delivery tube it, the connecting' members it and it beingrespectively provided vwith flanges it' .and it for confining sealing gaskets'ti and 22 therebetweenl and the respec- .3d tive ends of portions l2 and It. Suitably connected to and preferably integral with 'body it is a handle member t3 which is preferably connected with body t t adjacent the ends of portions i2 and it and by means of which the nozzle is 35 conveniently transported.

The body portion il serves to convey the owA of gasoline fromthe hose to the delivery tube It by way of tubular portions it and i. Said iiow is ycontrolled by a valve 2t carried by a valve i0 stem 25 which adjacent the opposite ends thereof is mounted in bearings 26 and El permitting longitudinal movement of the valve stem'. 'I'he `stem -35 is provided with a flange 2t against which the valve. 24 is detachably clamped-by. 45 means of a washer 29 held in engagement with valve 2l by means of a nut 3l engaging a threaded portion 32 of valve stem 25. Valve 24 is nor-v mally held in engagement with an inclined valve seat' I3 formed in body portion l2 by 50 means of a helical spring 3l one end of which `en .gages washer 29 and the opposite en d of which engages a spider 35 which integrally connects `bearing.2| with removable connecting mem- The valve stem 25 projects beyond flange 23 and is provided with a relativelylong bore 35 l opening through the -end thereof and in which is -slidably disposed a reduced portion 31 of a manipulating stem 33 which stem has slidable support in a gland structure 39 detachably thread- ,.ed in the closed end of body portion' II. 'Ihe gland structure 39 comprises a cup member 4I in which is disposed a leak proofv packing I2 held l0 in uid sealing engagement with stem 33 by means' of a centrally bored plugA 43lsthreadedly engaged within cup member 4I.

The stem 35 is provided with a shoulder 44 at the junction of reduced portion 31 with the main portion of stem 33, which shoulder forms an abut-I ment for a spring end engaging cap 45, which cap is engaged by one end of a helical spring 45 the opposite end of which rests on a spider 41 which integrally connects bearing 25 with body portion II. The outer end of stem 33`engages a bead. bearing portion 43 of a nipulating lever 49 pivotally connected at 5I to lbracket 52 inte- -gral with body I2, as well as to handle 23. The spring 45 normally maintains stem 33 in an outward position with lever 43 in the positionv indicated in Figure 1 with the free end thereof in engagement with handle 23, as indicatedat 53 providing a stop for the outward movement of stem 33 and in which position the free end.of reduced portion 31 of stem 33, is in substantial spaced relation to the bottom of bore 35 in stem 23, as indicated in Figure 1, whereby upon downward movement of stem 33 through actuation of lever 43 valve 24 will not be unseated until 35 stem 33 has moved so that the free end of :portion a1 engages the bottom of bore ss. fdr anpurpose hereinafter described.

The body portion II comprises further 'an integral hollow angular portion 55 interconnecting 40 tubular portions I2. and I3, and which, as indilcated in -Flgure Ldeines a bypass around the flow control valve 24, said bypass comprising a relatively short bore`55 at right angles to tubular portion- I2 and communicating therewith im- .45 mediately inwardly of valve 24 and a second somewhat larger bore 51 at right angles to bore 5 5 and with which bore 55 is in communication adjacent the inner end thereof. The outerv end of bore 51 is reduced,D as indicated at 53. In said 50 reduced bore is disposed a valve stem guide sleeve 5|. Slidably mounted in said sleeve is the outer end of-a valve stem 52 which carries a valve 33 normally maintained in engagement with a valve seat 54, defined by bore 51 and reduced portion 55 59 by means oi' a helical spring 55 surrounding stem 52 with one end thereof engaging valve 33 and the opposite end engaging a plug 55 threadedly engaged in the inner end of bore 51 and provided with a guide bore 51 for the inner end of vim stem 52. 'I'he valve 53 controlling the ow through the by-pass is adapted to be unseated prior to the Aunseating ci' valve 24 in order to provide a ow oi' gasoline at a predetermined minimum rate so that a fiowbelow this minimum rate cannot occur. In order to provide a predetermined minimum iiow itis essential that valve 53 be opened upon initial movement of lever 49 and in order 'to eilect this the construction embodies the follow- 70 ing additional mechanism. A pivot pin 59 is disposed within body portion II. Said pin is removably secured therein by means of a threaded enlarged portion 1I threadedly engaged within a threaded bore 12 in body portion I I. Pivotally 75 supported on pin 59 are the inner adjacent ends inwardly of lever 14 as indicated movable and whose free end is n of a pair of levers 'I3 and 14 which with pin 59 deiine a toggle arrangement. The levers 13'and 14 are supported on pin 53 immovahly longitudinally thereof by means of a stop ring 15 detachably secured to pin 59 adjacent the free end there of by means of a set screw 15. Spacing collars 11 and 18 are disposed on pin 53 between levers 13 and 14 and ring 15 and threaded portion 1| re.

spectively. The spacing mechanism further tachably connected the opposite ends of a tensioned helical spring 3|, which normally maintairis levers 13 and 14 in angular relation as indi-l f cated by full lines in Figure 1 with spring 3I disposed above the axis of pin 53. The levers 13 and 14 are limited in this angular position by meansA of a pin 82 carried b'y'stem 33 and projecting into an elongated slot- 33 in lever 'I3 and by the engagement of the outer end of a stop member 34 secured to lever 14 with the inner wall of tubular portion I3, the stop member projecting at for a purpose later described.

In operation of the nozzle construction disclosed handle 23 is grasped by the hand of an operator who with his fingers moves lever 49 about its pivot 5I, which lever through engagement of head 43 with stem 33 moves same downwardly, and as stem 33 moves downwardly lever 13 is moved downwardly about pin 53 by means of pin 32 which projects through slot 33 and lever x 14 will remain in its normal inactive position illustrated by full lines in Figure 1 until lever 13 has been moved downwardly a, distance such that the direction of pull of spring 3| is below the axis of pin 59 at which instant lever 14 will be drawn downwardly by spring 3| with a snap action whereupon projecton 14" of lever 14 will engage stem 52 resulting in a complete unseating of valve 53 thus establishing an instantaneous predetermined iiow of gasoline through the by-pass deiined by bores 55 and 51'. The valve 53 will be unseated in the manner above described before valve 24 begins to' open dueito the lost motion connection between stem portion 31 and stem 25 by means of the bore 35 in which stem 31 is ally spaced from the bottom of said bore. tance however, between the free end of stem portion 31 and the bottom of bore 35 is such that valve 24 begins to open immediately after opening ofivalve 53 by the toggle mechanism above disclosed upon continued movement of lever 49 resulting in a iiow of gasoline directly through tubular portions I2 and I3 together with the bypass dow above referred to. The lever 13 upon continued downward movement of stcm 33 moves therewith through the pin and slot connection 32 and 33 while lever 14 remains in the position indicated by dot and dash lines in Figure 1 with projectiom 35 of stop member 34 in engagemen with the inner wall of. tubular portionV I3.

Upon releasing lever '43 valve, 24 will be forced,

to its seat by spring 34 with levers'1 3 and 14 still in their angular position indicated by dot and dash lines in Figure 1 and with valve 53 still open but upon continued release on lever 43 stem 33 will be forced upwardly by spring 45 and as stem 33 thus moves upwardly lever 13 will be moved upwardly by engagement of pin 32 with a wall of the slot 33 therein until the longitudinal V normal disaxis of springil is again above the axis of thrown upwardly with-a snap action to theposition indicated by full lines in Figure 1 where- 1 upon valve 63 will be quickly closed by means of springi.

It will accordingly he seen that with the improved nozzle construction disclosed gasoline. cannot befdispensed `at a. rate of flow below a i predetermined minimum or within the accuracy range of the meter as valve 63 will open or close instantaneously b y means of the toggle mechanism disclosed regardless of the rate of movement impartedto lever 49 dueto the snap action feature of the toggle mechanism which is actuated by lever 49 and which'controls 'valve 63. In `order to provide adjustment in the by-pass ilow, externally threaded plugs. 9| having various sized orifices 92 may be provided and any 'one of which according to the desired by-pass ilow is removably threaded Hato an internally. threaded enlargement 93 of bore 56. In order to insertV or remove plug 9| 'same is inserted or `withdrawn through the bottom of bore 51 upon i removal oi! plug 66 and in order to thread plug 9| into `position a. threaded opening 94 is'provided opposite bore-56 for insertion of a suitable ltool, the opening 94 being normally closed by a threaded plug 95.

While I have disclosed ybut a single 'specic embodiment of my invention, same is to be considered as illustrative only and not restrictive manually operable means connected to one of* said valves so that said means can move rela- ,A tive to said valve .before causing the valve to be moved, and mechanism for the other of saith valves, said mechanisms being connected to said manually operable means so that said last named valve is opened with snap movement after apre-- determined initial movement of said manually operable means before it actuates said rst i named valve." l

2. A dispensing nozzle comprising a body designed to permit the How of uid therethrough in two passages, a valve to control the flow in' each passage, manually'operable means arranged to iactuate one ot said valves, said means beingl connected to said valve so that it may be operated substantially without aiecting said other valve, a pivoted arm within said body arranged to actuate the valve controlling the other of said l passages, a second pivoted arm extendingaway from said rst named arm, a spring acting to draw said armstoward each other, vmeans to il 3. A dispensing nozzle comprising a\body having a passage to permit the now of uuid there'-` through, a valve to control said flow, a pivoted i arm arranged to actuate said valve. a second pin: 69 instantaneous' with which lever 'Mwill be' pivoted arm extending away `from saiduilrst named arm, a spring acting to draw said arms toward each other, means to limit the swinging movement oi.' said arms, and manually operable means to actuate'said second arm torcause said spring to shift its line of action from one side of the pivotal axes'of said arms to the other side thereof, whereby said ilrst named ann is shifted with a snap action under the influence of said spring so that the valve movement is not proprtional to the movement of said manuallyoperable means, the said body being formed with a second passage therethrough, a valve tacontrol the 'ow through saidsecond passage, and

y to "said last named valve so that said valve is means to connect said manually operable means operable after the actuation'of the valve actuated by said pivoted arm. y 4, In a' compound valvev structure, a body with .by-pass with' a snap action and then upon further actuation, ,opening the valve in the main passage.

5. A manually controlled dispensing nozzle adapted to positively prevent flow therethrough below a'predetermined minimum rate and to allow a. regulated iiow above the minimum comprising a valve body having two passages of diierent' size, a valve in each passage to control the flow therethrough, and manually operable means to operate said valves, including means to open and close the valve in the smaller passage 'with a snap action.v Y

6. The invention as dened in claim 'wherein the, said means opens the valve in the smallerpassage before opening the valve in the larger passage.

, '7. A valve mechanism adapted to positively prevent flow below a predetermined minimum rate Vand to allow a regulated flow above the minimum comprising a valve body having a main passage therethrough, ,a valve to control the flow of fluid through said passage, a smaller by-pass passage,

a icy-pass valveAv to control ow of-fiuid through said by-pass passage, a valve operating mechanlsm having a lost motion connection with said main passage valve, a'. double slaap device for operating .said by-pass valve to thereby maintain Y said'valve fully open or fully clos'd, anda connection between said valve operating mechanism and said snap device to open said by-pass valve before any movement of the main valve and to :fully close said main valve prior to closure of the by-pass valve.

8. The invention a@ dened in claim '7 wherein said double snap device is positioned within said valve body. y

9. The invention as deiined in claim 7 wherein said valve operating-mechanism is adapted to vary the flow through said main passage by varying viding a passage for iiuid, a; valve to control the iiow of uid through said passage, a by-pass around said valve, a valve to control the now of iluid through saidbyl-pass, means to manually operate said first ed'valve and mechanisms operable by said Vme to actuate said by-pass valve with a snap action in advance of the operanon of said l:im nameaviuve and whom said by-pass valve open while the rst named valve is open.

11. The combination as defined in claim 10,

5 including means varranged in said by-pass and -readily movable therefrom to vary the predetermined minimum rate of flow through the by-pass.

12. A dispensing nozzle comprising a -body des'gned to permit the ow of uidtherethrough in l two passages, valve means to control each passage.

and manually operable means connected to said valve means so that one of said passages is opened with a snap action in advance of the'opening of the second of said passages, the first passage I l5 remaining open while the second named passage 20 andan outlet, andmeans for controlling flow from said inlet to said outlet, said means comprising a valve positioned between said inlet and outlet,an operating member, a lost moti n connection therebetween, a second valve 'positioned 25 between said inlet and outlet. and means actuated by movement of said operating member to take up said lost motion for causing said second valve to open a predetermined amount.

. and snap action means for operating the auxiliary valve.

15. In a dispensing, nozzle comprising a plurality or uid passages therethrough. valves for closing said passages, av single manually operable means for actuating said valves, means for providing a predetermined Vminimum ilow through one of said passageways when the valve thereof is opened in dispensing fluids, said manually operable means being arranged to regulate the rate of flow through another of said passages through a second of said valves above thesaid minim flow.

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