US1718888A - Oil-pump nozzle - Google Patents

Description

June 25, 1929. T. B. BENNETT OIL PUMP NOZZLE Filed Nov. 29. 1926 l J MAM! 1 Innwniov Thomasvafimnna lit) Patented June 25, 1929.

UNITED STATES THOMAS E. BENNETT, OF MUSKEGON, MICHIGAN.

OIL-PUMP NOZZLE.

Application filed Kovember 29, 1926. Serial No. 151,297.

This invention relates to a nozzle for liquid dispensing pumps. Pumps used for dispensing liquid, particularly oil, usually have a considerable dripping of the liquid from the nozzle outlet after the dispensing operation has been completed. Means have been used to eliminate any bad results from such dripping though heretofore, so tar as I known, no means has been used to completely remedy the defect and eliminate it. Drain pipes for carrying the drip back to the recei'itacle from which the liquid has been pumped have been most commonly used.

The present invention is concerned with a simple, practical and economical construction of nozzle in which dripping of oil or other liquid dispensed is completely eliminated so that there is no waste of oil nor any undesin able and messy condition created through the waste oil spreading over the top of the receptacle "from which it is pumped.

The invention consists of a novel construction otf dispensing nozzle by means of which this result is completely attained in a very etlective and satisfactory manner as will be fully understood from the "following description, taken in connection with the accompanying drawing, in which,

Fig. 1 is a side elevation ot a dispensing Jump equipped with the nozzle of my invention.

Fi 2 is an enlarged trout elevation of the nozzle, some parts being broken away and in section to better illustrate the (OliStllltfl'lOlL Fig. 3 is an enlarged vertical longi idinal section through the nozzle.

Fig. 4- is a plan view, somewhat reduced in size, oi the trip bar which is operated to open the nozzle to permit the dispensing of liquid.

Fig. 5 is a verti al section through theoutlet end of a modified type of nozzlev Like reference characters refer to like parts in the ditlerent figures of the drawing The pump may be 01 any usual and conventional construction and, as shown, includes a cylinder 1 located above a lower head 2 which is connected with a receptacle, 3 such as a barrel. or the lil :e,iron'i which the liquid is to be pllil'lpttl. The pump also includes an upper head 4:, cylinder 1 being clamped between the upperand lower heads by the usual rods which are shown but not numbered. The pump is hand operated by a crank 5 for the purpose of reciprocating the pump piston (not shown), oil being dispensed upwardly through an extension 6 to a head at the end thereof and thence through a short connecting nipple 7 to the nozzle 8.

The nozzle which is screwed on to the end of the nipple includes the horizontally located hollow body 8 having a closed outer end por tion 9 from which a short sleeve 10 extends vertically, and is exteriorly threaded to receive a. closing cap 11. Between the cap and the upper end of the sleeve 10 a leather washer 12 is positioned and is clamped between the under side of the cap and a metal ring 13 which lies against the upper end of the sleeve 10. The ring 18 has a relatively large central opening. The leather washer 12 also has a central opening of smaller diameter than the opening through the ring 13.

Below the sleeve 10 and at the lower part of the closed end portion 9 ot the nozzle is a vertical outlet section, the inner walls of which are formed to make a short vertical cylindrical opening 15 which communicates with a larger opening in the upper part. of the outlet member 14,. A valve member comprising rod 16 mounted vertically to extend through the outlet member 1-l having a diameter such that it is adapted to closely litthe cylindrical opening at 15, but not so close that it will bind thereagainst. The rod 16 adjacent its upper portion provided with radially extending guide vanes 17 and at its upper end with a large head or valve 18 which lies above the outlet member 14: and in its lower position bears against the lu'irizoitital ledge or valve 1S) surrounding the opening which extends downwardly through the outlet member 14.

In alignment with the rod 16 and located above the same, is a second rod 20, somewhat larger in diameter, which passes inawardly through the cap 11. and through. the opening in the leather washer 12, the downward extensions 12 thereof pressing against the sides of the rod 20. i The lower end of the rod is somewhat reduced in size and equi iped with a ball 21 which seats in a suitable socket formed in the head 18 and is retained therein by. an annular lip 22 which passes over the upper portion of the ball 21 so as to connect the two rods 16 and but permit a universal movement of one with respectto the other by reason. of the ball and socket joint described.

At the inner end and under side of the nozzle 8 a lug 28 is integrally cast extending downwardly therefrom, to which a trip bar 24 pivotally connected by means of the pivot pin 25, the inner end of the bar 2 1 being divided so as to pass at each side of the lug 23. The bar 24 extends to substantially underneath the outlet member 14 and at its outer end is provided with oppositely extending curved arms 26 between which is a recess 27 of the form best shown in Fig. 4. Between the ends of the bar 24 and at its under side it is further provided with an integral downwardly extending lug 28.

In the upper end portion of the rod 20 above the cap 11 an opening is made through which a U-shaped rod freely passes. This U-shaped rod has downwardly extending legs 30, one at each side' of the nozzle, each of which is threaded at its lower end to adjustably connect with the upper end of a connecting n1e1nber 31. Each of the members 31 is reduced in size at its lowerend portion, as indicated at 32, and each of the parts 32 at'its lower end is equipped with a ball 32 to have a. ball and socket connection with the sockets 33, one of which is connected with and located at the upper side and outer end of each of the arms 26.

On operating the crank 5, oil or other liquid will be forced into the nozzle 8 entirely filling the space Within the same and the pressure exerted thereby forces the part 12 of the leather washer 12 snugly against the rod 20 and also forces the head 18 downwardly against the ledge 19 Oil cannot cscape in such case by reason of pressure caused by attempted pump operation, as increase in pressure merely makes the head 18 fit the more snugly against the seat 19. The force against the head 18 is not excessive, however,

and the trip bar 24 maybe readily elevated so as to permit the escape of oil through the outlet member 14. On elevation of the bar 24 the U-shaped member 29 connected to the rod 20 lifts said rod and also the valve rod 16 so that the head 18 is lifted above the seat 19 and the lower end of therod 16 is lifted above the short cylindrical opening at 15. One way of lifting the bar 24 is to place a liquid receptacle, such as indicated at 34 in Fig.1, underneath the bar. and push upwardly thereon, inward movement of the receptacle being limited by the downwardly projecting lug 28'. The receptacle will catch the liquid and-when it is moved downwardly away from the bar 24., the valve rod 16 will likewise move downwardly, fit into and till the outlet opening at 15, forcing all of the oil ahead of it and positively stopping any drip of oil from the nozzle. Another way of operating thebar 24 is by hand this is used for instance, in filling'hottles. A bottle is placed underneath the outlet member 14, the neck thereof passing upwardly in the recess at 27 and the bar. 24 is lifted by hand using the same hand i which holds the bottle. Whenthe bottle is filled it, with the hand holding it, is moved downwardly whereupon the flow of liquid from the nozzle is immediately and automatically cut oil with a total elimination of any drip which otherwise would occur.

In Figures 5 to 8 inclusive some modifications are shown, particularly with respect to the nozzle outlet and the means used for insuring that no drip of oil shall escape from the outlet. In Fig. 5, the rods 20 and 16 shown in Fig. 3 are made integral, the upper section 200 being somewhat larger in cross section than the lower section 160. The head 18 is dispensed with but substantially at the junction of the two sections 100 and 200, an enlargement 35 is made serving as an abut ment against which the lower end of a light coiled spring 36 bears, the upper end engaging against the down turned portions 12" of the leather packing 12. The lower end of section 160 is provided with a collar 1(31 somewhat larger in diameter below which is a short downward extension 162 which, in its lower position, fills the outlet opening at 15 and extends entirely through the same. while the collar 161 seats against a ledge in the outlet section 14 around the wall or opening at 15. This completely closes the nozzle against any passage of oil. The lifting of the connected sections 200 and 160 is ett'ectcd by the same means shown in Figs. 1, 2, 3 and 4.

In all of the nozzle constructions a vertical bafi le 8 is located within and adjacent the outer portion of the nozzle 8 so that the oil must pass over the same and is not directed laterally against any of the heads such as 22 shown in Fig. 3 seated on the seat 19 or the other oil stopping devices used in Figs. (3, 7 and 8 which will now be described. 3

In Fig. 6, the rod shown in Fig. 3, is replaced by a. somewhat similar rod 201 which at its lower end is equippedwith a narrow collar 37 above which is a nut 38 screwing on to an enlarged portion of the rod 201, there being clamped between the collar 37 and the nut 38, a valve 39 of suitable yielding material, such as leather, with a metal washer 40 above the valve. The rod 10 is the same as that shown in the constructimi illustrated in Fig. 3 and it is permanently attached in any suitable manner to the lower end of the rod 201. This to all intents and purposes is the same in effect as the structure shown in Fig. 3, the head 18 being replaced by a yielding valve 39 so that a better seat may be made against the seat 19.

In Figs. 7 and 8 a. still further form of construction is shown wherein the combination of the two drip stoppingdcvices shown in Figs. 5 and 6 is effected. The rod 201 with its collar 37 nut 38, leather valve 39 and washer 40 are substantially the same as that shown in Fig. 6 except the lower end of the rod 201 has a recess or opening which is bored upwardly from the lower end of the rod and in which a light coiled spring 41 is located. The rod 163 in the lower part of the vertical extension to the nozzle has its upper end slidably received in the rod 201 and a. pin 41:2 passes through the upper end of rod 163 which at its ends, received in vertical slots 43 in the lower end of rod 201. Rod 163 is reduced in diameter at its lower end and has an extension 1'64; which in lower position passes through and substantially fills the opening at 15; while the shoulder between the rod 163 and its extension 164. seats against an angular flange around the opening at 15.

This provides three stop iages against the passage of oil from the nozzle when the rod 162-5 is in its lower position. The first effooled by the valve 39 seated on the seat 19; the second by the shoulder at the lower end of the rod 163 seating on the angular ledge around the opening 15; and the third by the extension 16% practically completely filling and extending entirely through the opening at 15. The spring; ll. insures that the rod 163 will be held in lower closing position when the upper rod 201 is in lower position and permits a certain latitude in manufacture that would not be present if the rod 163 was permanently secured to or integral with the rod 201.

la practice it is desirable that the bar 2st be limited in its upward movement and for this purpose it is equipped at its upper side ith a lug 24, shown in Fig. 3, and located directly under a. boss 8" at the under side of the nozzle 8. Accordingly, when the bar 2 1 is lifted, its upward movement is stopped when the lug 24L strikes across the boss 8" as is evi dent.

This construction of liquid dispensing nozzle is simple, practical and effective. It has been tested and tried and has proved very satisfactory, positively stopping drip and eliminating; this defect which heretofore has been sutlered. ltlo means is required and none is used to catch and return the drip as the drip is eliminated. The invention is defined in the appended claims and to be ci'n'isidered comprehensive oil? all forms oil structure coini n g within their scope.

1. ln :1 device of the class described, a horizontally local ed hollow nozzle, an outlet nieinlier depending from the outer end of said nozzle ha vino,- a vertical opening therethroi'igrh restrietei'l at its lower end for a shortdistance and enlarged above said restricted portion, a rod passing); vertically through the outlet member, an enlarged head at the upper end oi? the rod adapted in lower position to close the upper end of the opening in the outlet nieniher and extend beyond the edges oi thesame, said. rod in lower position filling the restricted portion of the openiu and extending thercthrough, a trip bar pivotally mounted at its inner end on and below said nozzle and extending forward to substantially below the lower end of the outlet member, a second rod extending upwardly through the nozzle, and connected at its lower end with said head, a U-shaped member connected at its middle to the upper end portion of the second rod and having depending sides PtlSSlllgi one at each side of the front portion oi the nozzle, and means connecting said depending sides with the trip bar.

2. in a C(lllStl'ilCtiOli containing the element i eoinbiiuition delined in claim 1, the front end of said trip bar being recessed. rearwardly whereby a recess is provided in the bar di rectly below the lower end of the outlet nieinher, and a hipconnected with the under side of said. trip bar a distance back oi said recess.

3. In a construction containing the elements in combination delined in claim 1, said head on the first rod being formed with a socliet and said second rod at its lower end with a ball received in said socket and said red at its upper end portion having an opening therethrough through which the U shaped. member loosely passes, and means providinga pivotal joint connection between the trip bar and the lower end oi each of the sides of said U-shaped inen'iber.

4t. A device of the class described compris ing, a nozzle having an outlet passage and an outlet opening; at the outer end of said pas sage, a valve seat at the inner end of said passage, a valve member extending through said passage, a poppet type valve on the inner end of said valve member engag eable withsaid seat, the outer end of said valve member being associated with said outlet opening to serve as a piston type valve whereby longitudinal movement of the valve member will open or close both valves and means for 111031- iug the valve member longitudinally.

i diwicc oi the class described comprisa nozzle having an outlet passage and a restric .l outlet opening in the outer end thereo't, a valve seat at the inner end of said passage, a valve .n'ieinher extending through said passage, the outer end thereof adapted to extend into said restricted outlet opening and being; associated therewith to form a piston type valve, a poppet type valve at the inner end of said valve member engageable with said seat whereby longitudinal movellltlllli oi the valve member will open or close both valves and means for moving the valve member longitudinally.

in testnnonv whereof ll. allix my signature.

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