US2547690A - Self-closing filling nozzle - Google Patents

Description

Apmifl 3 1951 @H L mm, ZEQEEQQ' SELF-QLOSING F'iLLING NOZZLE Filed June 15, 1948 &

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' INVENTORS ROBE/N8 L.

CHIP/l SAMUEL f. HO FE BY ATTORNEY Patented Apr. 3, 1951 SELF-CLOSING FILLING NOZZLE Rchbinsh Chadil,.Manhattan Beach, and Samuel E. ,Hoffer, Inglewood, Calif., assignors' of onefourth to Donald E. Waggoner, Jr., and one.- I fourth to James F. .Gardiner, bothof .Manhat- .t'an'Beach, Calif.

Application June- 15, 1948, SerialNo.333;D67

13 Claims. (Cl. 226.12.7)

flfhiisinvention. relates generallyto .filli'nsnoz- Zles. which are employed to suppl ,fiuid to various type of containers. It relates more particularly to animproyement .in filling nozzles which will Y .actnated control/in position to deactuateathe smanual wrcontroli As shown in the. drawin s:

The, numeral v6 indicates generally :thejnlet portion of a filling nozzle which is suppliedwith fluid from an attached hose .and pump. meche:

minimize the danger of. spilled gasoline when anism. A valve seat 8 encompasses a valve thenozzle is in thehands of a. careless. operator. disc 10 which-is held on adownwardly extending The. improvement. is particularly adaptable. to valve stem 12 by means of .nut I-4.-. A com.- be utilized with that type ,of high-speed filling. pressed spring l6 serves to maintain the valve nozzle with automatic shut-off shownin .Patent disc 10 on its seat 8 through reaction against, No.. 2,,32 0,033., dated May.2.5, -l943. 10 a plug 18 which closes the other end of the. It is .a primary object of this invention to valve body. provide. an improved filling nozzle. which .will A Venturi opening 19 is disposed downstream not. discharge liquid until the actual discharge. from. the valve seat 8 and a passage 20 connects opening of the nozzleis inserted. into. the conthis opening with a chamber which-comprises," tainer. a further portioncf the valve body. The-shame It is ,an object of approximately .equal ime ber-22 is connected by a second passageway or portance to provide. .a filling nozzle. whose. dis-. pipe .24 whose internal-diameter is larger than charge will be automatically stopped when the that of the first passageaflptoa-dischargeorificenozzle is withdrawn fromthe container being 26 in the side of the discharge tube 2! .of thefilled. nozzle. A sealing ringE-S holds a flexible diaw It is a thirdobject of the inventionto provide phragm 30 against the valve body, thus efa filling nozzle which has, in addition .to. the fectively sealing the chamber 22. A com-pressed. ordinary manual control for itsdischarge, .adspring 32' is disposed within; the chamber :ZZen. ditional automatic control either of a simple gaging the valve body and the diaphragm all. mechanical type or a slightly more complex hy- A divided-actuatingmember 34 is connected exdraulie type ior preventing utilization of the terio-r to the-diaphragm, being held fi-xed to the manual control until that time when the nozzle diaphragm .31! by a bolt 36. The 's'p-ring' 32 tendsis in correct position for filling a container. to force the diaphragm so and theeactuator 34* It is yet another object of the invention to into the position shown in Figure 3-. A slot=38 provide a filling nozzle which cannot be actuated in the actuatingmember 34 serves to encompass to discharge indiscriminately the liquid whereby a pair of rollers 40, which rollers also-extend increased safety is obtained when a fluid such through. an opening :42 in-ears 44 which are as gasoline .is being discharged from the nozformed integral with the sealing ring '28.. The zla-when in the hands of. a somewhat careless rollers All alsoextendthrough an L-shapedslot' operatorn. 46 in cam head 48, which head is centrally lo.- Theseand other important objects'willbe made cated between the divisions of the actuating" apparent from a study of the following specifimember 34 andalsc between the stationary ears cation and the accompanying drawings. The 44. invention, in a preferred form, is illustrated in Thehead 48 is carried -on a lug 50 which is the drawings and hereinafter more fully depinned to a stem 52 which extends through'the scribed. valve body and has exterior thereto, pivoted In the drawings: as at 54, -a manually operated. handle 56. A Figure .1 is .a persnectivevview of the'improved spring 58 is disposed to press upwardly against filling nozzle in its form when hydraulically acthe hub "50, thus tending to maintain the camtua-ted. 45 head 48 in the position shown in Figure 3. As Figure 2 is asimilar perspective view, but difshown in Figure 3, the rollerstfl are positioned felting in that it. incorporates simple mechanical in the smaller portion of the L-shap'ed slot of means. the cam head 48 andsince-they are held sta Figure3 is'al-secticnal viewcofthe hydraulically tionary with the valve body byears M, down actuated.imnroyementvshown inconjunction with ward stresspn'thepivotstem 52 will not cause' the remainder of the nozzle. movement in :that direction; Figures: is a: sectional yiew-taken on the line A fluid passageififi extends from the upstream; 4-54 cf Figured 5 side of the-main alve ill to that portion of 11a Eigur sectional view showing the. hy- 56 cylinder "62 which is hydraulically sealed -iron! the' remainder of the 'cylinder'fby a piston 41" A compression spring-65 tends :to move the'plston to resist the pressure action of any fluid entering through the passage Bil. Another fluid passage 88 connects the passage 60 with an outlet l-El in the discharge tube 21 of the nozzle. This passage 68 is larger internally than the passage 60. A spring 12 normally seats a valve 14 to effectively close the opening 10. However, a lever 16 is connected to the valve 14 and sufiioient pressure on this lever will overcome the spring 12 and open the passage 68. An actuating lever 18 is connected to the piston 64, extends without the cylinder 62 and is so formed as to contact the actuating member 34 at approximately a right angle to any axial stress exerted on the stem 52.

When the nozzle is removed from its rack, starting a pump which supplies fluid to the inlet chamber 6, pre sure is exerted through the passage 60 causing movement of the pi ton 64 to the right against action of the spring 65 as shown in Figure 5. This motion is transmitted through the lever 18 and the actuating member 34 to move the rollers 40 against the action of spring 32 into the elongated portion of the cam head 48. Conseouently, any downward force exerted on the stem 52 will mere y ser e to lower t e cam head 48 into the position shown in Figure 5, providing. of course. thi force is sufficient to o ercome action of spring 58. Itwill then be under tood that the pivot point 54 will merely move downwardly resultant from manual actuation of the control lever 56, and the valve In will remain seated. Upon in ertion of the dischar e tube 21 into the bung ho e of a container r the fill ipe of a g soline tank. the le er 16 will contact the ide of the hole or pi e. there y o ening the valve I l, con eouently relieving the fluid pres ure on the pi ton 64 since the pas age 68 is f greater diameter than the fluid pas a e 60. The action of spring 58 will then rai e the cam head 48 into the po ition shown in Fi ure 3: the action of spring 32 will move the rollers M into the po ition shown in that fi ure since the pres ure from the actuating lever 18.has been removed. The rollers 40 now contact the stationary ears 44 and the small portion of the slot of the cam head 48. thereby holding the head 48 and. con eouently. the stem 52 stationarv. M nual en a ement of the control le er ma then e utilized to operate valve It! to any degree de ired.

When the container is filled to a point where the lio id covers the re tricted opening 25 of the flu d as a e 24 t e suction action o the venturi I9 will cau e movement of the dia hra m 30 to the ri ht again t action of pring 32. t us moving the ro ers 34 into the elon ated po tion of cam head 8. thereb releasing the reviously stati nary ivot 56. The va e I will c n eq ent eat it elf throu h action of the spring "5 and flow will be shut off.

To o ercome any possib e leaka e around t e Piston M in the c inder 2. a sm l pa sage Ml connects t at ortion of the c linder 62 to the downstream ide o the valve ID in the main flow ch mber of the nozzle.

The mechanical modification of the above-descri ed h drauli ally actuated nozzle is shown in Figure 2. In lieu of fluid pres ure a sprin 2 ho ds an a tuat ng ver 84 in di ng n contact with the act ating mem er M. When the di char e tube 21 is inser ed into the hun ho e.

mechanical en a ement with concentric le er 8'5 di posed in an intermediate po ition on the dischar e t e 21 ser es to o ercome action of the spring 82 to permit operation of the mainvailve.

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

We claim:

1. In a filling nozzle, a valve body having a fluid passage, a self-closing valve in said passage, manual means for opening said valve, means for rendering said manual means ineffective comprising a movable fulcrum support for said manual means, and means to prevent the holding of the said fulcrum support stationary, said means including a lever on the nozzle responsive to insertion of the nozzle into the container to be filled.

2. In a filling nozzle, a valve body having a fluid passage, a self-closing valve in said passage, manual means for openingsaid valve, means for rendering said manual means ineffective comprising a movable fulcrum support for said manual means, and means to prevent the holding of said fulcrum support stationary, said means including a lever adapted for mechanical actuation resultant from contact with the container and a valve operated by the lever.

3. In a filling nozzle, a valve body having a fluid A passage, a self-closing valve in said passage, manual means for opening said valve, means for ren-' dering said manual means ineffective comprising a movable fulcrum support for said manual means, means to prevent the holding of said fulcrum support stationary, said means comprising a lever on the discharge tube of the nozzle and an actuator connected to said lever and adapted to contact said fulcrum support.

4. In a filling nozzle, a valve body having a fluid passage, a self-closing valve in said passage, manual means for opening said valve, a movable fulcrum support for said manual means, means for holding said fulcrum support in movable position to render said manual means ineffective, means operable to overcome said holding means, and further means to control said last named means.

5. In a filling nozzle, a valve body having a fluid passage, a self-closing valve in said passage, manual means for opening said valve, a fulcrum support for said manual means, a spring urging said fulcrum support into supporting position, means for holding said fulcrum support in a non-supporting position, and means operable to overcome said holding means whereby said spring may move the support into supporting position.

6. In a filling nozzle, a valve body having a fluid passage, a, self-closing valve in said passage, manual means for opening said valve, a

fulcrum support for said manual means, a'

position, and a lever operable to overcome said second spring whereby said first spring may move the support into supporting position.

8. In a filling nozzle, a valve body having a fluid passage, a self-closing valve in said passage, manual means for opening said valve, afulcrum support for said manual means, a spring urging said fulcrum support into supporting position, a piston under fluid pressure connected to said fulcrum support to hold same in non-supporting position, and mean operable to relieve said fluid pressure whereby said spring may move the support into supporting position.

9. In a filling nozzle, a valve body having a fluid passage, a self-closing valve in said passage, manual means for opening said valve, a fulcrum support for said manual means, a spring urging said fulcrum support into supporting position, a closed cylinder on the nozzle a piston disposed therein, an actuating member connected to said piston and contacting the fulcrum support, means constantly urging said actuating member away from contact with the fulcrum support, a source of fluid pressure connected to the cylinder to urge said piston in a direction to force contact between said actuating member and the support, and means for relieving said fluid pressure.

10. In a filling nozzle, a valve body having a fluid passage, a self-closing valve in said passage, manual means for opening said valve, a fulcrum support for said manual means, a spring urging said fulcrum support into supporting position, a closed cylinder on the nozzle a piston disposed therein, an actuating member connected to such piston and contacting the fulcrum support, means constantly urging said actuating member away from the support, a source of fluid pressure connected to the cylinder to urge said piston in a direction to force contact between said actuating member and the support, and means for relieving said fluid pressure, said means comprising a conduit which selectively may connect the cylinder to the atmosphere.

11. In a filling nozzle, a valve body having a fluid passage, a self-closing valve in said passage, manual means for opening said valve, a fulcrum support for said manual means, a spring urging said fulcrum support into supporting position, a closed cylinder on the nozzle a piston disposed therein, an actuating member connected to said piston and contacting the, fulcrum support, means constantly urging said actuating member away from the support, a source, of fluid pressure, a conduit connecting said cylinder to said fluid pressure source to urge said piston to force contact between said actuating member and the fulcrum support, a second conduit hydraulically connecting the cylinder to the atmosphere, a normally closed valve in said second conduit, and means operable to open said valve.

12. In a filling nozzle, a valve body having a fluid passage, a self-closing valve in said passage, manual means for opening said valve, a fulcrum support for said manual means, a spring urging said fulcrum support into supporting position, a closed cylinder on the nozzle a piston disposed therein, an actuating mamber connected with said piston and contacting the fulcrum support, means constantly urging said actuating member away from the support, a sourc of fluid pressure, a conduit hydraulically connecting said cylinder to said fluid source to urge said piston to force contact between said actuating member and the support, a second conduit connecting the cylinder to the atmosphere, said second conduit being of larger internal diameter than the first conduit, a normally closed valve in the second conduit, and means operable to open said valve.

13. In a filling nozzle, a valve body having a fluidpassage, a self-closing valve in said passage, manual means for opening said valve, a fulcrum support for said manual means, a spring urging said fulcrum support into supporting position, a closed cylinder on the nozzle a piston disposed therein, an actuating member connected to said piston and contacting said fulcrum support, means constantly urging said actuating member away from the support, a source of fluid pressure connected to the cylinder on one side of the piston to urge said piston in a direction to force contact between said actuating member and the support, means for relieving said fluid pressure on said one side of the piston, and a passage connecting the cylinder on the other side of the piston to the atmosphere.

ROBBINS L. CHADIL. SAMUEL E. HOFFER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,320,033 Davis, Jr. May 25, 1943 2,343,903 Hammand Mar. 14, 1944

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