USRE13197E - Filling-machine - Google Patents

Description

P. C. H. STRASBURGBR.

FILLING MACHINE.

APPLICATION FILED Nov. 25.1910.`

eissued Jan. 17,1911.

i LZ1/0656 l,

- UNITEDv sTATns l PATENT OFFICE.

FRANK e. H. -s'rnasnunenn or CHICAGO, ILLINOIS, `assIeNon 'ro YIsc'vifimms MA- CHINERY MANUFACTURING COMPANY, F CHICAGO, -]II..1'.'IN0IS, ,A4 CORPORATION 0F ILLINOIS.

FILLING-MACHINE.

Specification o f Reissued Letters Patent. Reis'u'ed Jan. 17, 1911. Original Nb. 956,867, dated May 3, 1910, Serial No. 510,873. Application for reissue led November 25,

1910. 'seria1No.594,227.

To all 'whom'fit may concern? f Be it known that I, FRANK C. H. STRAS- BURGER, a citizen of the United States, residof gas in suspension in the liquid and witlr.l

outthe production of foam inthe bottles.

IIn the attainment vof this vprimary object theinvention also has for its objects to simplify and improve the construction of a mechanism of this charactersuch as t-hat set forth in my Patent No. 948,463, issued February 8, 1910, inwhich the pressure inthe liquid tankds 'utilized for closing the liquid valve; in Whiclna counter-pressure is estab-- lished in ythe bottle before the liquid valve is opened; and in'which the liquid valve is operated by a diaphragm. l

Another object of the invention is to provide afillingV mechanism of simple and novel construction which requires no stuffing boxes whatever and embodies a 'liquidvalve lo- .'aressectional views on the lines (cated at the lower end of the filling tube andl operated by pressure in the tank to prevent l dripping. 1

AIn the accompanying drawings illustrating. the inventionT-Fi'gure 1j is a sectional elevation of the machine. Figs. 2, 3, 4 and I y 4-4, 'and 5'-5, respectively, of Fig. 1.

'Referring tothe .drawings 3 designates the body of the filling mechanism which is secured in an opening 4 in the bottom of the liquid tank 5 by'bolts 6, as shown, or by any other suit-able means. A depending filling tube. 7 is secured to the body and` communicates with a fluid passage 7 therein. -A valve easing 8 is secured beneath thebody 3 by a threaded ring 9 and this valve casing is provided with a horizontal seat 10 for the airvvalve- 11 whichv isfa-rranged .to fitsnugly .-in the casing and is` adapted tomove vertically therein.v LA' sleeve 12ris made inte-` gral with or fastened to the air valve l1 and f it extends down on the filling tube throu'gh the lower/end of the casing 8 and'carries a head 13- at vits lower end. This ,head 1s into the counter-pressure chamber 29'.

provided on its under s ifde witha gasket 14 and ou its upper side 'Wlth a circular rib 15 vto engage the 'gasket 16 at the lower end of the valve casing. An air passage 17 is provided between the fillingtubeand the sleeve 12 and. this passage is lextended upward at 17 between the filling tube and the -air valve and is provided Ajust below the air valve' with one or more lateral ports 18. A n air passage 12 is also provided Ibetween the sleeve and t-he casing. A spring 19 is arranged on the filling tube Within the air chamber 20 and betweenithe body 3 and the reducedl shoulder 21 at the upper end of the air valve and this spring .normally holds said valve seated to close the air inlet passage 22.

If it is desired merely to equalize the pressure in the bottle and the tank before the filling operation begins the air pressure may be Asupplied through a tube connected fto the nipple 23, and' extending up in the liquid tank above the level of the liquid therein, in a familiar manner; but if it is vdesired to obtain a greater pressure in the bottle than in the liquid tank this air tube' may be connected with aj suitable source of air supply. The latter arrangement is employed to .compensate for the hydrostatic head of the liquid in the filling tube which is of more or less importance as the case may be under varying conditions which exist inbottling-houses. l.

The liquid valve 24 is arranged to seal the lower end of the filling tube and is carried by a rod 25 which is connected at its upper end to a diaphragm. 26." This diaphragm 27 and provided with a pressure chamber 28 below the diaphragm and a counterlpressure chamber 29 above the diaphra m. The casing also comprises a removab e cap 3() and collar 31 and two-tubular members 32 which register vvithpassages 33 in the body 3.' The communicate with passages 36 which o pn 1e opening 37 in the casing 27 through which the rod25 `passes is sufficiently large to permit constant communication between the pressure chamber 28 and the tank so that the lis secured ina casing designated generally vtubular members are of sufficient length to support the upper part of the casing above the usual level of the liquid in the tank. A ir tubes 35 lead from the tubular members 32 and pressure in said chamber Will'always be equal air tubes 35 d bottles thereon and it has bell has an air .chamber 29.

to ther` pressure in the tank. The tank is of any suitable form Vand is made air tight to.

confine a certain degree of pressure therein, as required, and this pressure acts upon the 5 diaphragm to hold, the liquid valve normally seated against the lower-end of the fillingtube. l

The chamber 29 is normally open to the atmosphere through the passages 36, the tubular members 32 passages 33, air chamber 20, air passages 1 ports 18 and passage 12.

The centering bell 38 is slidablyarranged on the lling tube 7 to properly position thel a clrcular rib 39 at its upper end to engage the gasket 14 on the head 13 of the air valve. The centering passage 40 to register with the passage-17.

In practice the air valve is held normally closed by the spring 19 and the liquid valve is held norma y closed'by the pressure in the chamber 28- under the diaphragm, the chamber 29 above the diaphragm being nori 25 mally open to the vatmosphere as before 9 stated. When a bottle is moved up to filling Vposition it first engages the gasket 41 in the- 7 centering bell' and pushes.l the bell against the head 13 and unseats the airvalve 11. This 3'0 admits pressure from the air inlet passage 22 through ports 18, and passages 17 and 40.

to the bottle, andat the same time through the passage 17', air chamber 20, tubular Isupport's32, air tubes 35 and passages 36 to the When the pressure in the chamber 29 is` equalized with or made' greater than the ressure below the diaphragm in the cham er' 28 the liquid -valve will be opened and by this time the counter-pres- 0 sure-has been established in the bottle. If

' the pressure'on both sides of the diaphragm.

Ais merely equalized 'the' liquid valve will openJ by gravity and the weight of the column of Aliquid sustained thereby; if there .is a greater pressure above than below the diaphragm this will assist in opening the liquid valve. The liquid valve is opened by the same pressure that is admitted to the, .bottle and this' occurs when the counter- 0 pressure has been fullyestablished in the bottle so that the liquid will iioW dead into the bottle and without the loss of gas or the reduction of foam. When the bottle is and loweredv on the" iilling tubel the spring 19 presses the head 13 awayfromthe gasket 16, opening passage 12 to the atmosphere, andA presses; the vvalve 11 to its seat thereby closing the `air inlet passage'22. As

the bottle continues on its downward movement the centeringbell drops away from they head 13 and uncovers the air passage 1 7 When the passage 12" is uncovered the res- -sure in chamber 29 lowers suili'cie'nt y to' permit the pressure vinthe chamber 28 on the underside of the diaphragm,l which/is and 17,

thepressure in the tank, to raise the liquid valve to seal the lower end of the filling v tube. Thus the liquid valve is closed before vor at least at the lsame time that the, air valve is closed and hence pressure is mainthe liquid valve is open, thereby preventing the escape of' liquid from the vfilling tube after the pressure is relieved which might agitate the liquid in the bottle and produce foam. The passages v12 and 17 permit all thel pressure in chambers 20 and 29 yand. their connecting passages and tubes to' escape.

.My invention simplifies the construction penses with the use of all stuffing boxes, and it simplifies'` and improves the'operation of the Valve. It is entlrely automatic in operation and when once adjusted it needs no further attention. Any suitable means may be employed for raising and lowering the bottle to operatethe valve mechanism. Y

ters Patent is the combination() a liquid tan a liquid said diaphragm being subjected on one side thereof to the pressure in the tanky-and means for supplying a 'counter-pressure to munication to supply suficient pressure on the other side of the diaphragm lto counterpermit thel valve to open.

2. In a counter-pressure filling machine, the combination of a liquid tank, afilllng thetank surrounding the lling tube,van air a sleeve .surrounding said ling tube and rigid with the'air valve, an air passage be? Ltween the filling tube and the air valve, a

phragm connected to said liquid val v`esaid :raisingsaid air valve to admit pressure from the. air inlet through th port and the pasdiaphragm and open' the liquid valve.

3. In a counter ress urefiilllng machine,

tube-depending .from theH tank, a casing on the tank surrunding theiilling tube, anlair inlet in v thecasin aspringepressed valve in thecasin'gnorma ly closing said air inlet, a sleeve surrounding said .lling z tube andi f rigid wit/h theair valve, an' air. outlet pas# sage' between ,the sleeveand the filling tube, another air/'outlet passage between the "sleeve andthe casing, 'a' portr the sleeve,

"tained'on the liquid in the bottle as long as of lilling valves of this character, it dislVhat I claim and desire to secure by Let- I Y tubefdepending .from the tank, a casing l011 port in. the sleeve, a liquid valve,fadiaI 1. In a counterres'sure'lillin machifncf.

valve, a diaphragm connected. to said valve,

the bottle and atvthre same time opening c om- '1 inlet in thev casing, a spring-pressed valves,

in the casing normally closin said air inlet,`

diaphragm being subjected on one'sidethere of to the pressrein the tank, a'nd means for lsage between the air valv and 'filling tube `to' i munter-balance the tank pressure on the' the combination o a liquid tank, a filling balanceathe saidy pressure in the tank and H100 filling tube, an air passage between the filling tube and the bell,'a liquid Valve, a diaphragm connected to said liquid valve, said diaphragnibeing subjected on one side there- 0f to the pressure in the tank and said bell being movable vertically to engage said head and unseat the air Valve to admit counterpressure to the bottle and a counter-balancing pressure on the .diaphragm to open the liquid valve.

4. In a counter-pressure lling machine,

the combination of a liquid tank, aeasing on the tank, a filling tube depending from the .tank and through said casing, a liquid Valve A at the lower end of the tube, a rod fastened 'a head on the sleeve, a centering bell on the 'I to the liquid valve and extending up through the tube into the tank, a pressure controlled diaphragm Within thetank for operating the rod, an air inlet in the casing, an air valve within the casing to close said inlet, a sleeve on the filling tube extending down from the air Valve through the casing, an air passage between the sleeve and filling tube and extending up between the air valve and filling tube, an air passa-ge between the sleeve and the casing, and a port. connecting the passages.

'FRANK C. H. STRASBURGER. lVitnesses:

WM. F.-BELT,

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