Патент USA US2111852код для вставки
March 22, 193s. - H. K. ELINCHBAUGH ' ¿2,111,852 AUTOMATIC FILLING NOZZLE 'Fileçl Aug. 1'0, 1937 2 sheets-sheet 1 BY - ATTORNEYS. March 22, 193s.> ~|11. K. FLINCHBAUGH AUTOMATIC FILLING NOZZLE ` Filed Aug. lo, i957 2,111,852 ' v 2 Sheedzz-s-ShevetY v22 FIC-ì W. . ì Ha M_. Ha JX." ' [NVE/WOR.b ` WITNESSES. ï‘îènïg h’. Flin/¿bbw 1 `r BY @and ATTORNEYS. - Patented Mar. 22,l 1938 ' 2,111,852 ‘ UNITED .STATES PATENT OFFICE , - 2,111,852 AUTOMATIC FILLING NQZZLE Henry K. Flinchbaugh, York, Pa. Application August 10, 1937, Serial No. 158,288 (Cl. 226-127) 8 Claims. My invention relates to automatic valves and particularly to ones which are actuated to close by the submergence of the nozzle end' in the liquid which has been discharged -into a receptacle. 5 Still more speciñcally, my invention is concerned with automatic valves for gasoline dispensing nozzles which automatically stop the flow of 4gaso line when ,the gasoline in the container being filled J submerges the end of the dispensing nozzle. l0 This invention is a modiñcation of my previous invention shown in my applications for United States Letters Patent tiled September 16, 1936, Serial No. 101,022, and the present application is a continuationI in part of the said earlier applica tion as to all common subject-matter. Accord . is the provision of a simple and positively op erating automatic valve for the nozzle of a gasoline dispensing unit, which can'be depended upon to shut off the flow of gasoline when the end of the 20 nozzle becomes submerged. Other objects and advantages will appear from the following'de tailed description of a preferred embodiment of4 my invention, reference being had to the accom _ panying drawings. fit an adjustment element I1. This adjustment element Il regulates the sensitivity of the valve and this adjustment is Aeffected by moving the ele- '15 ment Il! in or out. The farther the element I1 projects, the greater impediment it is to the fluid stream through the valve 3. When a `greater _ port-ion of the element I'l is exposed to the pres sure -of the fluid stream, it isclear that the re solved force urging the element Il downward 20 against the pressure of the operating cylinder 4 is correspondingly increased. The angle of the ñuid stream impinging on the element Il causes this resultant downward force. Hence the sensi of the nozzle, the automatic valve being open. of the element I1. . Fig. III is la sectional view taken on the line III-_III of Fig. I. ’ Fig. IV is a sectional view takenon the line Je Iv-IV of Fig. I. j - Fig. V is a perspective view of the closure valve. Fig. VI is a perspective view of the operating cylinder in which the stem of the closure» valve moves. ` Fig. VII , is a perspective view of the spray For the purposes of a detailed description of the device shown in the drawings, that device may be conveniently analyzed into an outer nozzle l with hand control valve 2, an automatic valve .3 having an operating cylinder 4, an internal nozzle 5 and a, spray control tube 6 separated by an annular 55 recess 1 from said internal nozzle 5. ` , ' On the end of the valve stem ID is a piston I3 which works in the cylinder 4. in an obvious man ner. Around the stem l0 is a coil spring I9 urg ing the piston I8 upward and the valve 3 open.` In order to avoid the danger of ñuid collection in the cylinder Il, drainage conduits 20 are pro vided leading into conduit i6. . At the upper end of the cylinder 4 is a head 23 in threaded engagement with the cylinder I. This head 23 is shown in perspective in Fig. IX. In the head 23 is formed an inlet conduit 25 com ' control tube positioned at the end of the nozzle. Fig. VIII is a perspective view of the internal nozzle/positioned between the spray control tube and the operating cylinder mentioned above. Fig.' IX is a perspective view> of the removable end of the operating cylinder having an automatic slide valve formed therein. ,_ - Extending longitudinally through the valve 3 10 and its stem I0 is a conduit1 I6. 'I'he lower end tivity of the automatic operation of the valve N 5 3 may be regulated by varying this resultant force through changing the degree of projection ' the automatic valve closed. 40 convergence makes the internal nozzle 5 the con striction I5. Fig. I of the drawings is a side view of a nozzle and hand valve, partially -in section to show the automatic valve of my invention placed in the end. FigpII is a side view in section of the automatic 30 valve portion of the nozzle shown in Fig. I, with __ tegrally therewith and extending into the operat ing cylinder 4. The valve 3 is formed to cause a convergence of the fluid stream into the internal nozzle 5 in which a valve seat Il is formed. This of the conduit i6'is enlarged to receive in a press ingly the principal object of my present invention 20 The outer nozzle l and hand control valve 2 are of a conventional type and need not occupy us. The automatic valve 3 has a stem I0 formed in ‘ municating with the cylinder 4 as will be herein after explained. A slide valve 28 slides in con duit 29 at the bottom of which isiormed a valve seat 3i). From the lower part of valve 28 a stem 3i depends and extends through a conduit 32 into 45 cylinder 4,. resting on top of valve stem I0. The bottom portion of stem 3| is formed as shown in' Fig. IX with a flattened end in order to avoid interfering with the free ñow of liquid through .conduit I6 in stem I0. The stem 3| i‘lts very 0 loosely in conduit 32 in order to permit the free flow of liquid therethrough when the conduit 25 is open. , i The cylinder 4 `is held in position by radially ` extending segments 34, permitting the free flow 65 E atmete of liquid through the spaces between the seg» ments 36. At the bottom of each segment, ports 35 are formed, with conduits 36 connecting the ports 35 to the spaces between the segments liti. The cylinder ll is shown in_ perspective in Fig. VI. -« These ports 35 prevent air pockets from forming during the flow of liquid _through the closure nozzle El. The cutting oil’ of this source of Aair in turn. increases the draw or pull from the center of the ñow which increases the pull on the adjustment element I1 and the valve 3 enough to move the valve down on to its seat il. This in turn allows the control valve 28 to move down to its seat 30 under pressure in the outer valve 3, and the interference with the proper nozzle i on top of the valve 28, closing the con functioning of the device caused by such air ' duit 25 and completing the automatic shut-off. 10 pockets. Thus, there is in' eiîect one solid stream To reopen valves 3 and 28, the hand control valve through closure valve 3 instead of three separate 2 is closed which relieves the pressure on the ones from the spaces between segments 34. valves 3 and 2d and permitsv them to be lifted The internal nozzle t is constricted by the bevel form of the~valve 3 as explained above and its discharge side is flared to direct the fluid stream over and without touching the annular recess 'l before hitting the wall of spray control tube t at points fr0. The discharge side of the tube Ei is also constricted by a converging wall 20 to eiîect a good fluid discharge. Two air ports 3B are formed between the inside of the outer nozzle i and the outside of the spray control tube ii, see Fig. III. These ports 38 lead from the end of the outer nozzle i to the annular space l between the spray control tube 5 and the internal nozzle Ei. The function of these air ports 3d is that of breathers which induce the '?luidistream discharged froml the internal nozzle 5 to follow its natural course over the annular recess l with 30 out filling up the clearance space between the stream and the -spray control tube 6 at its inner end. Dotted lines in Fig. I indicate the normal course of the iluid stream from inner nozzle 5. From the above it will be seen that the flow of 35 liquid through the outer nozzle i is restricted at the oonstricted portion of the internal nozzle t, consequently forcing the liquid through by pressure. The lower or outer end of the internal nozzle t is tapered allowing the liquid to spread 40 and to that degree guiding the spread of the flow to contact the spray control tube t at points till creating an air chamber around the annular recess ‘l’ that has ports 33 to allow the how of liquid its natural breathing of air as it spreads. As the liquid flows through the internal nozzle ii it is also ilowing through the conduit 25 into a pressure chamber ¿il of the cylinder d, out through the conduit it in the valve stem il! and the valve 3, continuing through the adjustment 50 element il into the center of the main ilow of liquid. ' As the pressure increases or decreases in the vouter nozzle I the ñow of liquid through the internal nozzle 5 and through the adjustment 55 element Il also increases or’decreases with the pressure. It is to be noted that ythe conduit in element l'l is of a smaller cross sectional area eo than that of the conduit i6 and hence this ad justment element I1 is effective as a small nozzle at the end of conduit i6. Now as the flow of liquid increases through the >adjustment element i'l the flow of liquid that encircles the element Il increases, increasing the pull of the liquid exhaust of the pressure chamber 4| out through 65 the conduit IB. This creates a more uniform pressure in> the pressure chamber lll, thus creat ing a Wider range of operating pressures of the automatic shut-olf nozzle than exists in the pump installations now in use. 70 The automatic shut-011’ ltakes place when the liquid in the container being ñlled _reaches the discharge end of outer nozzle` I closing oil' the air ports 38 from the atmosphere which cuts oii" the air that is being breathed in by the ilow 75 of liquid spreading as it ilows out of the internal from their respective seats il and 3i) by the pressure of the spring i9 to their normal posi tion. ‘ ' The adjustment element i7 is held by a press , fit which can be moved to extend out of the valve t to a variety of lengths, which counteracts the pressure of the valve spring by the ñow of liquid contacting the surface oi’ the sides of the adjust 20 ment element il from the angle of the flow at that point. This creates an adjustment Iof the sensitivity of the automatic valve by the amount of the surface of the element il' exposed to the flow. While I have described this preferred embodi ment of my invention in detail, it is obvious to one skilled in the art that numerous changes might be made and such modiñcations are deemed to be within the spirit of the invention 30 as hereinafter claimed. ' Having thus described my invention, î claim: 1. The combination of an outer nozzle. a closure valve within said nozzle, a closure valve stem, a conduit formed in said valve and valve stem longitudinally thereof, a pressure means urging said valve open, a closing piston attached to the end of said valve stern, an operating cylinder in which said piston operates, said cylinder having an inlet port at the supply end of said cylinder, di) a control valve closing said inlet port when said closure valve is in the closed position, an internal nozzle into which said >closure valve opens, a spray control tube positioned at the discharge end of said internal nozzle and extending to sub stantially the end of said outer nozzle, and an 45 air duct leading from the end of said »outer nozzle to a point between said inner nozzle and said spray control tube. 2. The invention of claim l wherein the oper- a ating cylinder is supported within said outer 50 nozzle by radially projecting portions having dis .charge ports formed in the ends of said radially _ projecting portions,lsaid discharge ports having conduits leading to the spaces between said radially projecting portions. ' 3. The invention of claim 1 wherein the closure valve stem has formed therein a conduit con necting said operating cylinder with the longi tudinally extending conduit in said valve stem. 4. The invention of claim 1 wherein an adjust- ' 60 ment member is positioned at the discharge end of said conduit formed longitudinallyin said closure valve and valve stem, said adjustment member having capacity for adjustment longi tudinally of said valve stem. 5. The invention oi.' claim l wherein said in 65 ternal nozzle and said spray control tube are separated from each other by an annular recess. 6. l'I'he invention offc'laim 1 wherein said con trol valve is of the sliding type and has a depend 70 ing stem connected to the valve piston and which rests on said closure valve stem vfollowing the movement thereof. '7. In combination, an outer nozzle, a closure . j ' l guasta " ' ¿ _ , 3 valve within said nozzle, a pressure means fore-_ ’ sure from said closing piston, when said closure lng said valve open to allow ?uidvsdischarse past valve is closed. said valve, a closing piston within said nozzle and normally exposed to the iluid pressure in said 8. The invention of claim 7 wherein the ex haust _duct has an adjustable projecting nozzle 5 nozzle, an exhaust duct leading through said closure valve and discharging centrally into vthe element attached toits lower end, the cross- - sectional area of said nozzle being smaller than stream of liquidflowlng past said >closure valvel ,that of said exhaust ductÍ ` ` and a control valve for cutting ol! said iluid pres- HENRY K. FLINCHBAUGE.