US1920047A

US1920047A - Dispensing nozzle

Info

Publication number: US1920047A
Authority: US
Inventors: John E Zoerb
Original assignee: Individual
Current assignee: Individual
Priority date: 1932-04-09
Filing date: 1932-04-09
Publication date: 1933-07-25
Anticipated expiration: 1950-07-25

Description

J. E. ZOERB DISPENSING NOZZLE July 25, 1933.

Filed April 9, 1932 J1 Zoerb,

aerate il -DEN E. ZOERB, OF EUREKA, SOUTH DAKOTA DISPENSING NOZZLE Application filed April 9,

This invention relates to dispensing-nozzles, and more particularly to those through which gasoline and other liquids are discharged, under considerable pressure, at rather high velocity, after passing through metering mechanism.

It is an object of the invention to provide a valve structure for nozzles of that kind in which outflow of liquid may be stopped gradually and the valve is slamming shut.

This object is attained by the provision of a dual valve structure, in which one of the valves gradually closes before the other reaches its seat. This arrangement, more over, permits the liquid remaining in the nozzle after closing of one of the valves to drain out before the closing of the other valve, whereby subsequent drippage from the nozzle is avoided. 1

When considered with the description herein, the characteristics of the invention are apparent in the accompanying drawing, forming part hereof, wherein there is disclosed an adaptation of the invention, for purposes of illustration.

Like reference-characters refer to corresponding parts in the views of the drawing, of which Fig. 1 is a longitudinal section;

Fig. 2 is a transverse section on the. line 2-2, Fig. 1.

The body or shell of the nozzle, the several fixed elements of which preferably are of integral formation, includes an inlet-pipe 3, so formed as to be capable of being grasped conveniently by a hand, and arranged at its receiving end to be coupled with a delivery-hose 4 leading from a source, of supply.

The pipe 3 leads, into an intermediate chamber 5 of a substantially cylindrical casing 6, which is divided by transverse partitions 7 and 8 into an upper chamber 9, the intermediate chamber, and a lower chamber 10. The upper chamber has an opening atthe top, which is closed in anysuitable fluidtight manner, as for example by a threaded I plug 11. The partition 9 has an lntake port leading from the intermediate to the prevented from 1932. Serial No. 604,234.

clamp a washer 20 against a disc or poppet valve member 21 and hold that member against the disc, the valve member being capable of closing the exit-port on contact with the seat 13.

An upper threaded end portion 22 of the valve-stem carries a spider 23, which is locked in adjusted position on the stem by a nut 24. The spider is a part of, and car ries, a hollow cylindrical sleeve-valve 25, which is open at the top and bottom, and which is reciprocable in, and closes the intake-port and an opening in the upper partition 7. The wall of the sleeve-valve, in the portion that is below the lower partition 8 when the valve is closed, is formed with one or more ports. In the embodiment disclosed, ports 26 are afforded by diametrically opposite inverted-V-shaped openings extending upwardly from the lower edge of the cylindrical wall of the valve.

The valves are moved toward closed position, and normally are held closed, by a spring 27 interposed between the plug 11 and the spider 23.-

T he disc-valve is of a size to enable it to pass through the openings in the partitions 7 and 8, and the opening inthe top of the shell is large enough to permit both valves on the stem to pass through it. Thus the stem and the valves thereon bodily may be inserted into and Withdrawn from the shell, and it is easy to take out the valve structure for adjustment and/or repair and to replace A lever 28, with one end pivoted at 29, bears against the lower end of the valvestem, and at its free end it is guided by a guard member 30. The lever is positioned to be reached conveniently by fingers of the operators hand when holding the nozzle at the inlet-pipe 3.

" When the lever is pulled upwardly, up-

. the stem are such that, when the disc-valve is closed, the ports of the sleeve-valve are below the partition 8 and that valve also is closed, and those ports do not pass that partition and the sleeve-valve is not opened until after the disc-valve has opened during upward movement of the stem.

By turning the sleeve-valve upwardly or downwardly on the threaded portion of the' stem, the time interval between the opening of the disc-valve and the sequential opening of the sleeve valve, and between the closing of the sleeve and disc valves one after the other, may be altered to meet varying demands of service and the character of liquid being dispensed.

Further, the rate of increase of discharge of liquid through the sleeve-valve during its opening movement, and conversely the rate of decrease of discharge during its closing movement, are dependent upon the number, size, and location of the ports of that valve, all of which may be varied in accordance with requirements.

As the sleeve-valve opens gradually after the disc-valve, discharge of liquid from the nozzle is gradual at the beginning, and thus there is avoided surge discharge that is apt to result in waste of liquid at the beginning ofthe filling of a tank or other receptacle. On the other hand, the sleeve-valve closes quickly under the influence of the spring 27 upon release of the lever 28. Therefore, there may be instant stoppage of flow or liquid when, for example, a meter indicates that the (quantity of liquid ordered has been I dispense After the sleeve-valve has closed, any liquid that may remain in the upper chamber, as would be the case if the cylinder were closed at the top.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a dispensing device having a caslng formed with aligned intake and exit ports in opposite walls, a valve structure comprising a stem reciprocable in said casing, valves on said stem arranged to open said exit-port and thereafter said intake-port on movement of the stem in one direction and to close said intake-port and thereafter close said exit-port on "movement in the opposite direction, one of said valves being adjustable longitudinally on said stem with respect to the other, and a spring arranged to impart closing movement to said valves.

2. In a dispensing device having a casing formed with aligned intake and exit ports in opposite'walls, a valve structure comprising a stem reciprocable in said casing, a poppet-valve on said stem for said exit-port, a sleeve-valve on said stem for said intakeport arranged to open after movement of said poppet-valve from its seat, and a spring arranged to impart closing movement to said valves.

3. In a dispensing device having a casing formed with aligned intake and exit ports in opposite walls, a valve structure comprising a stem reciprocable in said casing, a pop pet-valve on said stem for said exit-port, a sleeve-valve disposed in said intake-port and having a port positioned to pass through said intake-port after opening of said poppet-valve during movement of said stem, and a spring arranged to impart closing movement to said valves.

4. {hdispensing device having a casing contalnmg upper, intermediate, and lower chambers divided by partitions, there being an opening in the partition between the upper and intermediate chambers, an intakeport from the intermediate to the lower chamber, and an exit-port from the lower chamber, and means to supply fluid to the intermediate chamber, and a valve structure comprising a stem reciprocable in said casing, a poppet-valve on said stem for said exit-port, a sleeve-valve on said stem movable in said opening and intake-port arranged to open after movement of said poppet-valve from its seat, and a spring in the upper chamber arranged to impart closing 1 movement to said valves.

JOHN E. ZOERB.