US1736771A - Vacuum nozzle - Google Patents

Description

Nov. 26, 1929.

L. w. DlcELY 1,736,771

VACUUM NOZZLE Fled July 20, 1925 momma anatomical hier',` 2G, v1929 f 1.73am

SAN FRANCISCO, CALIFORNIA, .d

appuntamenti my essere. ne. entre.

' This invention relates to vacuum nozzles,

and is more particularly directed to a nozzle employed in connection with the llin of containers with volatile indammahle uids, such as gasoline, distillate, and the like.

in the iilling of containers,=such as ve gallon cans, with gasoline and other indemniahle iluids, it is particularly desirahl'e it not ahsolutely necessary, to prevent the liberm ation oi the fumes or vapors of the gasoline or other inliammable vapor from heing permeated through the room in large 'quantities as such vapors or fumes are extremely noxions, that is to say, they are injurious to the health or the individuals working in the room and also create a great lire hazard. i it is desirable also tosautomaticall -iill such containers, rst weighing the in ammable l tluid with which the same is to he filled so that .g3g the volumetric measurements printed on the container' will correspondI with the true contents of the container and/then discharging the weighed liquid into containers which are automatically conveyed and positioned under se the discharge nozzle to receive the liquid. llt is, therefore, an object of this `llinvention to provi e a vacuum nozzle which is particularly adapted for use in connection witl automatic equipment for lling containers, 3 9 Another object of this invention is to provide a vacuum nozzle having means incorporated therewith which may he connected with or inserted into the container to provide atluid-tifght' connection therewith so that all l 35 the inflammable volatile vapors liberated during the iilling of such contri ner may he drawn o'to a suitable point of exposure.

@ther objects and advantages of this invention will be apparent from the following dem tailed description of a preferred embodiment thereof, as illustrated in the accompanying drawings.

in the drawings:

,g5 Fig. 1 is a diagrammatic elevation of an automatic weighing and illing apparatus empioyinga nozzleillustrated diagrammatically said elevation, embodying this invention.

2 is an enlarged side elevation of a vacuum nozzle emhodying this invention.

llig. 3' thereof.

i is a top lan taken substantially on the line i, of ig. 3 of a' vacuum nozzle illustrating the same with the packing-retaining necl: removed.

in the preferred embodiment of this invention illustrated in the accompanying drawings, l illustrates a conveyor upon which a container 2, such as a five-gallon can, is conveyed to the point to be filled. 3 illustrates a vacuum nozzle havin a discharge spout 4 which is adapted to fit within the bung or hole 5 ci the container. The containers 2 are conveyed on the conveyor 1 in an inclined position so that as the container 2 is filled the air which is expelled therefrom will all flow towards the hole 5 of such container 2. 6 illustrates a conduit leading from any suitable point of storage or su ply of the liquid with which it is desired to ii l the container 2. The liquid is discharged into a weigh hopper 7,' which may he of any desired or. preferred type. A valve 8 is situated in the lower end of the weigh hopper 7 and when the same has ret5 ceived a predetermined weight of the liquid the valve head is lifted from its seat by means is a central sectional side elevation oft the cahle 9 which is wound on um 10 which drum is operated by means of a belt l1 passing over a pulley 12. The filling hopper 13 Ireceives the 4weighted liquid from the weigh hopper 7 and is supported by means not herein illustrated. When the container 2 is in the position illustrated in Fig. 1 the nozlzle 3, which is slidably mounted on spout 18 g5 is dropped, by means not shown, so that the spout li of the nozzle 3 is inserted in the hole 5. The valve 14 of the lling hopper 13 is then opened toy admit the liquid from the hopper i3 into the container 2.

rllhe vacuum pump, diagrammatically illustrated at i5, is' connected to the nozzle 3 draws the vapors and air expelled from the container hy the admission of the liquid from the container and delivers the same to e5 any suitable point, not shown.

the vacuum nozzle 3 comprises a body 16 having a central i'illing duct or passage il? adapted to receive the spout 18 oi' the filling hopper 13. The central passage i7 is re- 100 the body 16 so as to surround the cent-rai passa e 17 thereof. lThe chamber 17 is con necte to the conduitJ 21 'at 22., The charn-1 ber 20 is o en at the lower end around the spout 4 of t e nozzle 3, a plurality of spacing lugs 23 being provided to centrally place the discharge spout 4 in the helle` 5 so there will be passages between'the body 16' and the spout 4 through which the vapors and air liberated from the container 2 may fbe drawn into the chamber 20 by means out the Vacuum pump 15. These openings main 'tain communication between the chamber 2@ and the interior of thecontainer while the same is being filled. As the containers 2 are in an inclined position on the conveyor 1, it is necessary that the means provided tor maintaining air-tight or fluid-tight connection ofthe nozzle that the containers 2 be at an inclined position and for this reason the lower end of the body 16 has a tapered or conical surface 24 operating as a seat upon which a washer 25 of eather, rubber, or like material, is fitted and which washer is retained in position by means of a nut or cap 26, which nut or cap 26 is screw threaded to the offset 27 formed on -the body 16. The axis of the conical seat is inclined. The cap nut 26 is of larger central bore than the spout 4 of the nozzle 3 so as to permit the washer 25 to profeet outward therefrom so that when the nozz e is lowered into engagement with the container 2 the portion of the washer 25 which .extends from under the cap nut 25 will be engaged by the periphery of the hole 5 and a fluid-tight connection will be obtained between the nozzle 3 and the mouth of the container 2 so that the vacuum maintained in the chamber 20 will act upon the gas and vapors liberated from or expelled lfrom the interior of the container 2. t

Having fully described a preferred embodiment ofthis invention it is to be understood that I do not wish to be limited to the exact details of construction herein set forth, which may, obviously, be varied in detail without departing from. the spirit of the appended claim. v Y

I claim:

mounted on the said bod lin inclined position for maintaining a duid ti ht connection between the s out and a container supported in an incline position,

y Signed' at Richmond, California, this 9th day oit-'July 1925,

. LEE W. DICELY.

A vacuum nozzle comprising a' body having l a4 passage formed therethrough, av spout formed at the lower end of the passage, a

vacuumv chamber, surrounding the said passage, a plurality'of lugsspaced around the periphery of thev said spout for centering the spout in the inlet o'f a container with the vac- Y lad

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