US 2303179 A
Description (OCR text may contain errors)
NOV 24, 1942;; ER. slTToN ETAL 2,363,179
SAFETY DISPENSING NOZZLE y Filed sept'. 1s. 1939- v5 NTOR.
Patented Nov. 24, 1942- l I UNITED sTATEs PATENT OFFICE SAFETY DISPENSING N OZZLE Elbert R. Sitton, Houston, and Charles J. Crassons, Fort Worth, Tex.
Application September 16, 1939, Serial No. 295,162
The invention relates to nozzles such as are employed in dispensing gasoline or similar liquid. It is an object of the invention to provide a nozzle of this character which will automatically shut orf the discharge of liquid from the nozzle -when the receptacle into which the liquid is discharged has reached a certain level,
It is a. further object to provide means for controlling said nozzle adapted to shut oil the discharge of liquid when the position of the nozzle has been disturbed, as, for example, when the receptacle is moved relative to the nozzle.
It i`s another object ofthe invention to provide means to regulate the rate of discharge of liquid from the nozzle to avoid the discharge of liquid at an excessive rate,
It is a further object of the invention to provide a means for controlling the discharge of liquid which is adapted for use in various types of receptacles into which the liquid is discharged.
It is a further object of the invention to provide means of unseating the valve at the discharge end of the nozzle manually when said valve is stuck in its seat.
Various other points of novelty connected with Fig, 3 is a detail of the automatic valve show- Y ing the same as extending within the inlet to a gasoline tank.
Fig. 4 is a transverse section on the plane 4-4 of Fig. 1. f
Fig. 5 is a broken side elevation showing the rotatable ring whereby the discharge openings may be regulated.
The improvement is adapted to be used upon discharge nozzles of various types and may be used as an attachment for old nozzles now in existenceor may be constructed as a unitary device to be sold as a complete unit.
In the drawing is shown a body I which has a threaded end 2 for connection with the hole or pipe 3 leading to a container for liquid such as The body I is provided with a valve chamber 3 having a transverse partition 4 therein with a valve-receiving opening 5. Within said opening is a, Valve 6 mounted upon a stem 1 the valve chamber and projects at 8 from the stuing box 9 on said wall. The projecting end 8 is adapted to be depressed by a lever arm I0 pivoted at I I in the outer wall of the chamber.
The valve also has a guide stem I2 tting within a guide member I3 and a spring I4 is employed to hold the valve normally in closed position. It will be seen that the valve stem 8 when depressed will unseat the valve and allow the passagerof liquid. This is no part of the present invention. At the discharge end from the valve chamber is secured a discharge nipple I5. Said nipple is screwed within the end of the valve chamber and is curved so as to more easily be fitted within the end of the neck I6 which is understood as being connected with a receiving tank such as the gasoline tank upon a motor car.
The end of the nipple I5 is reduced in diameL- ter adjacent itsr end remote from the valve chamber and threaded for connection within a coupling II. Said coupling serves as a connection with a flexible vkfloat chamber I8 secured thereto.
Between the coupling member I'I and the end I9 of the discharge nipple is a rotatable sleeve or collar 20. Said collar has a plurality of lateral openings 2| therein through which liquid from the interior may pass outwardly.
The forward end I9 of the nipple I5 has its interior passage tapered inwardly toward the passage Within the nipple thereby providing the l generally tapered seat indicated at 22 into which may t a tapered valve member 23, There are lateral openings 24 in the tapered seat member which may be brought into registration with the openings 2I in the rotatable sleeve through'the rotative movement of said sleeve.
Housed within the coupling member I'I is a diaphragm or plate 25, which tends to close the end of the discharge member. Said plate 25 has a central opening 26 therein through which a valve stem 2l is extended. Said stem is connected at one end, as shown at 28, to the valve member 23. This will be seen best in Fig. 3. The other end of the valve stem 2'I which projects outwardly through the plate 25 is rounded at 29 to contact with the innermost of a plurality of spherical iloat members 30. Proximate the upper end of the chamber I8 and beneath the plate 25 there are provided a plurality of radial openings 48 which prevent air lock of the float members as liquid moves upwardly within such chamber,
The exible end member which extends at one end through the wall of 55 ypreferably made from a spiral winding of sheet I8 upon the nozzle' is I metal, as shown best in Fig. 2, the end of which is reenforced by a ring of sheet metal 3|.
Within this iiexible member are the oat members 30 and it is contemplated that a plurality of said floats will be employed each placed in contact with the adjacent one and arranged so that the outermost oat member will t against a shoulder 32 upon the ring 3|, thus holding the floats from being moved out of the housing.
When the valve 23 is in closed position, as shown in Fig. 3, it sometimes adheres to its seat and fails to drop back into open position when the flow of the liquid is stopped. In such cases a rod 33 is used to exert pressure against the valve to unseat it. At the forward 'end Aof the rod 33 is a contact member 34 which may engage with the valve to unseat it, said contact member having lateral shoulders 35 which limit its movement downwardly against the valve. The outer endof the stem 33 is connected Ywith a push button 36 which projects through a stufng box 37 in the side wall of the nipple i5. Aspring 38 normally holds the push button extended outwardly and it will be understood that when the push button is released the spring will withdraw the stem outwardly away from the valve.
In order that the valve 6 may be automatically held in open position there is a lever arm 3B constructed in U-shape, as shown in Fig. 4, with the ends thereof secured upon a pivot member 40 which, as shown in Fig. l, is supported on the lower side of the nipple I5. It is extended through a supporting collar formed upon a plate 4| secured upon said nipple by welding or other equivalent means. This U-shaped arm is adapted to engage with the underside of the lever arm SD, which operates the valve. There is an oppositely extending U-shaped arm 42 mounted upon the pin 40. The forward end of this arm is curved slightly to engage beneath the inner flange 43 upon the neck' Il of the tank. With this device it will be understood that when the nozzle is inserted within the neck 44 of the tank the forward arm i2 will engage beneath the rim 43 and move the opposite arm 39 upwardly against the valve operating arm I3 and open the valve. Should the tank be moved relative to the nozzle, as when the vehicle is moved away from the nozzle, the lever 42 will be released and the arm 39 will drop to allow the valve to close, thus shutting on the discharge of gas.
In the normal operation of the nozzle the forward end thereof will be inserted into the gasoline tank or other similar receptacle with the forward float chamber I8 extending into the neck of the tank. The end 4'2 of the control lever will be engaged beneath the flange d3, as shown in Fig. 2, thus causing the opposite arm to open the valve, allowing the discharge of gasoline or other liquid. If the valve 23 is closed 'and will not readily unseat to allow the discharge of liquid through the openings 2l and 24, the push rod 33 may be operated to release the valve. Gasoline will then be discharged through the openings 2| and 24 into the neck of the tank. The size of the opening through which the liquid is discharged will be regulated as shown in Fig. 5. The sleeve 20 is rotated relative to the inner end of the nipple so that the resulting opening shown at d6 in Fig. 5 will Vbe sufficient to allow the liquid to be discharged at the proper rate. The sleeve 2D may be fixed in this position by means of set screws 41.
When the valve 23 is in open position vthe end of the stem 21 will contact with the oat members 30 in the float chamber. It has been found that when the discharge of gasoline or semiliquid from the nozzle is at an excessive rate such that the passage through the openings 2| will not freely receive it the valve 23 will begin to close. Discharge of the liquid at an excessive rate is undesirable as it causes the liquid to overflow at the upper end of the neck even though the tank is only partially full. The flow from the nozzle through the openings 2| causes a reduction of pressure adjacent the valve 23 sufficient to cause it to be moved toward closed position, thus throttling the flow of liquid and in case the flow is sufficiently rapid the valve may be entirely closed until the rate of ow has been reduced.
When the tank has been sufficiently lled so that the float members 30 are gradually submerged, as shown in Fig. 3, the point will be reached where the buoyancy of the float members will raise the valve 23 to closed position, as shown in that gure. Thus the discharge of gasoline will be automatically shut off when the tank has been lled to the desired amount. It will be obvious, of course, that a further amount of gasoline may be discharged into the tank through the use of the hand-operated valve control member 33. When the nozzle is then withdrawn from the tank the lever arm 42 will be released and the valve 6 will automatically close.
The float chamber as here constructed is flexible and may be bent to conform to the passage into which it is inserted. The floats, being separate members, will be able to move in said chamber even where it is curved. It is thus assured that the floats will act, when submerged, to bear against the stem 2l and move the valve in spite of any curvature of the flexible chamber.
It will be seen that the nozzle constructed as described will be automatic in its action so that the personal attendant in a filling station may start the flow of gas and then busy himself with other duties, while the tank is being filled. The nozzle will provide for the automatic shutting off of the gasoline as soon as the tank has been filled to the desired level. It will thus be seen that an automatically controlled discharge member has been provided which willA assure the operator that the flow of gasoline from the nozzle will be shut offbefore any overflow of gasoline from the tank can take, place. The advantages of this construction will be obvious to those skilled in the-art.
What is claimed is:
1. A dispensing nozzle including a pipe, a manually operatedA valve therein, a discharge nipple, an inwardly tapered valve seat therein with lateralopenings, a tapered valve within said nipple forwardly of said opening, a forwardly extending stem on said tapered valve, and a float member coacting with said stern tomove said valve into engagement with said tapered seat.
2. A dispensing nozzle including a pipe, a. manually operated valve-therein, a stem on said valve, an operating arm adapted to engage said stem, means adapted to be moved by contact with a container to move said arm to open said valve, a discharge nipple, an inwardlytapered valve seat therein with lateral openings, a tapered valvein confronting relation with and movable relative to said seat, a-stem on said tapered valve, and a float member-coacting With said stem to move said valve into engagement with said tapered seat.
3. A dispensing nozzle including a discharge nipple having lateral openings therein, means to regulate the size of said openings, a valve movable to and from position closing said openings, a stem on said valve, a cylindrical float chamber attached to said discharge nipple, a plurality of spherical oat members in said chamber, said members being movable when submerged in liquid to contact said stem and close said valve.
4. A dispensing nozzle including a dischargev nipple, an inwardly tapered seat in the outlet end thereof, said seat having lateral openings therein, a valve member tapered to t said seat, a flexible float member extending beyond said valve, a plurality of separately movable loat members therein, and means on said valve to contact one of said oat members and move said valve.
5. In a dispensing nozzle, a discharge nipple, a
valve movable to open and close said nipple to control the discharge of liquid from said nipple,
a llexible cylindrical float chamber at the freeV end of said nipple, a plurality of spherical float members in said chamber, and means on said" members in said chamber, a stem on said valve l projecting therefrom to contact with one of said float members when said members are moved upwardly.
7. In a dispensing nozzle, a discharge nipple having an outlet, an inwardly tapered seat at said outlet, a valve in the nipple outwardly from the seat movable to and from said seat to close or open said outlet, float operated means to close said valve, a push rod in said nipple adjacent said valve, positioned to be moved to unseat said valve and means to limit the movement of said rod.
8. A dispensing nozzle including a valve body, a discharge nipple thereon, a valve in said body movable to close the passage therethrough, a stem on said valve projecting from said body, a lever to contact with said stem to move said valve, an arm pivotally mounted on said nozzle adapted to engage a container at one end whereby the other end is swung into position to'move said lever to open said valve.
9. A dispensing nozzle including a discharge nipple having a passage with lateral openings in the sidewalls thereof, a valve movable against the flow of liquid through the nipple to and from position closing said openings, a float chamber beyond said valve, a stem on said valve extending into said chamber, float means in the chamber adapted to move said stem and close the valve and means manually operable from the exterior of the nipple for opening said valve.
10. A dispensing nozzle including a discharge nipple having a passage with lateral openings in the sidewalls thereof, a closure plate in the passage beyond said openings, a valve movable to and from position closing the openings, a float chamber beyond said closure plate, a stem on said valve passing slidably through said plate and into said float chamber, and float means in said chamber adapted to move said stem and close said valve as liquid rises within the float chamben CHARLES J. CRASSONS. ELBERT R. SI'I'ION.