US1712877A - Combination fill, air vent, and relief coupling - Google Patents

Description

COMBINATION FILL, AIR VENT, AND RELIEF COUPLING Filed Nov. 12, 1925 2 Shams-Sheet l ATTORNEY.

1 14, 1929.. m3. H. E'HLERs COMBINATION FILL, AIR VENT, AND RELIEF COUPLING Filed Nov. 12 1925 2 Sheets-Sheet 2 A TTORNEY.

l atented a r tl EENNSWLWMM.

ttpplieati'ion fitted Ialovernhcr dilly invention relates to apparatus utilitaable in (.OillbilliillOll Will-l1 closure structure carried in a. port, as the inlet port at a tanlt.

or receptacle tor controlling the pressure within the tank. tor controlling the passage or gaseous or liquid material irom the tank, and tor other purposes.

in accordance with my invention, suitahle closure structure carried hy the inlet port ot a. tank. as aforesaid, is so related to mecha nisni controlling the admission of a pressure applying medium to the tank that the closure structure may not he removed Without ti rstactuating the control mechanism to check admission oi the pressure-applying medium. Further in accordance with my invention the gaseous ressure vvithin a tanlt or receptacle is controlled by a device rendered operative upon increase in pressure ahovea predetermined ralue to discharge the gaseous medium to a suitahle destination, as a chainher leading to the atmosphere, and more particularly, said chamher encloses mechanism permitting passage oil a gaseous medium therethrough hut preventing passage oil a liquid along the path talten by said medium. lily invention resides in apparatus oi the character herealter described and claimed. For an illustration oil one oil the terms my apparatus may talte, reiterence is to he had to the accompanying drawing in which:

Figure l is a vertical sectional view at apparatus constructed in accordance with my invention taken on line l-l oi Fig. t.

Figure 2 is a vertical sectional vieiv talren on line 22 oil rig. ll.

li igure 3 is a vertical sectional view at a till hashing.

Figure t is a plan view, partly in section oil apparatus constructed in accordance with my invention.

Figure 5 is a horizontal sectional view showing a control valve invopen position Referring to Figs. It and 2, an elongated casing l is secured in any suitable manner to a pipe or conduit 2 opening into a suit-ahle tank or receptacle (not shown). lP'relerahlyl, casing l is provided with a flange 3 secured to a corresponding tlange d oi conduit 2 hr holts 5, or equivalent.

Casing 1 comprises an internally threaded collar it having a. diameter somewhat less than the diameter of the casing, said collar lltl, lllhli.

tterial llt'o. titldttlil.

receiving a threaded pipe "2 spaced train the circumferential 'ivall ot' casing l and conduit 2 and extending into the tank suhstantiallp inparallel relation with respect to conduit A closure cap 8 received hp thesopen end ot' casing 1 comprises a stem 2 a dish lit, and a circular threaded sleeve ll, all termed, preferably as one integral part. .dt detach ahle plug l2 threaded into an opening. in the stem 9 may he removed-to permit insertion oil a suitable tool tor a purpose hereina'lter described. ll washer l3, oi suitahle material as a composition oil asbestos and suitahle hinding material, is carried hp a valve dish it formed integrally With a sleeve l5, provided with a series ot' pert'orations l6. Sleeve lit extends into stem 9 and is provided with a circumferential groove ll receiving one or more scrcvvs ll, or similar retaining devices. Ea'leeve i5 is threaded at one end to receive a cap ltl having a longitudinally eatending passage receiving the shank l9 oil a valve disk 20 hiased hy a coil spring 21, or equiva-' lent, into engagement with the trail oil an opening 22 in the ralve dislr l t. @hviously the compression ot spring 21 and the lorce necessargq, to move dish 20 trom its seat may he varied hp adjusting cap l3 longitudinally of sleeve lh.

'llpon removal oil cap 12 ilrom stem 9, as descrihed above, a suitahle tool may he inserted interiorly oil said stem into engagement with shank l9 oil valve dish 2t). "thereupon, h 7 rotating said tool valve dish 2d is rendered ettective to grind its seat.

Casing l is provided with an ular llange 28 donning a seat tor the vvasher ltl associated with valvedish it and also tor a flange comprised in the end oi a fill hashing hereinatter descrihed.

Closure cap it may he removed from casing 1 and a till hashing 2t, llig. t, suhstituted therefor. Bushing 2t comprises an internally threaded collar 25 adapted toreceive a lit-ting carried h the hose or other conduit passing the desired liquid into the tanlr. d threaded sleeve 26., corresponding in diam eter with sleeve ll oil closure d is received hr the threaded end oi casing it. it spout 2L preferahly 'lf'ormed integrally rvith sleeve 26, terminates in a tdange 28 adapted to rest upon the collar h.

Referring to hig. l a hollow angular ealltl ltl

tltlt 29, suitable tension 29, preferably formed integrally with casing 1 is secured to aconduit 30, Fig. 4, in any suitable manner, preferably, however, by a flange 31 formed integrally with said extension, and fastened by bolts 32 to a corresponding flange 33 formed integrally with conduit 30.

A guide member 34 freely slidable in the passage between hollow extension 29 and the interior of easing l is suitably connected to a rod 35 extending into a recessed cap 36 fitted in the end of extension 29. A coil spring 37, or equivalent, confined around rod 35 be: tween cap 36 and a collar 38 secured to said rod biases the latter toward the right (Fig. 1) and holds a disk 39 of suitable material, as a composition of asbestos and a binding agent, confine-d between guide member 34 and a disk 4O forming a part of said rod in engagement with a valve seat 41,

. A slot 42 in rod 35 receives a cam lever 43- carried by a shaft 44 one end of which is mounted in a bearing 45 comprised in extension 29. A collar 46 fitted into an opening in the wall of extension 29 in alignment with bearing 45 receives shaft 44 which is extended into a region lying in substantially the same plane as the top of cap 8. A lever 47 pivoted to the end of shaft 44 has a hook 48 which, at times, may be held in engagement with cap 8, as hereinafter described. Shaft 44 may be secured against axial movement with respect to extension 29 in any desired manner, preferably, however, by utilizing a collar 49 secured to said shaft and engaging the inner surface of collar 46.

To prevent leakage from within extension packing material 50 may be placed interiorly of a threaded extension 51 of collar 46 and compressed by a gland 52 controlled by a follower nut 53.

Referring to Figs. 2 and 4, the casing 1 is shown as provided with an aperture 54 opening into a float box 55 secured to casing 1 in any suitable manner, preferably, however, by a flange 56 formed integrally with said float box which is fastened by bolts 57 to a corresponding flange 58 on casing 1. A plate 59 retained between flanges 56 and 58 has an opening in alignment with aperture 54. A flapper plate 60 constructed preferably of aluminum is pivotally mounted on plate 59 and rests upon aspherical member 61, of cork, or so constructed as to be readily displaceable by the liquid stored within the tank. A wall 62 perforated as indicated at 62 divides floatbox 55 into two chambers and is provided with a threaded recess receiving a collar 63 serving as a support for a second pivoted flapper plate 64. A conduit 65 leading preferably to the atmosphere is'connected to float box 55 in any suitable manner, preferably, however, by a flange 66 formed integrally with said float box which is secured by bolts 67 to a corresponding flange 68 carried by conduit 65.

Apparatus of the character herein described is designed especially for use with a tank or receptacle containing gasoline under air pressure utilized to force the liquid from a discharge port.

To fill the tank, fill bushing 24 is substituted for closure cap 8 and the liquid, as gasoline, is passed through said fill bushing and pipe 7 into the tank. Meanwhile, air displaced by the liquid rises exteriorly of pipe 7 and passes through aperture 54 into float. box 55 and thence along conduit 65. During passage of air in this manner, the relatively light flapper plate 60 prevents generation of air currents and holds spherical member 61 in the full line position shown in Fig. 2. If a plate of this character is not utilized, spherical member 61 will usually be impelled by the air currents infloat box 55 into the passage through collar 63 thereby closing this passage end preventing escape of the displaced air.

A tank of the character herein described is usually filled by attaching a hose to the till bushing and permitting the liquid to flow into the tank under the influence of gravity. Under such conditions, it may happen that the attendant will fail to observe when the tank iStfLlll and, accordingly, the overflowing I 0 liquid upon entering float box 55 along the same path taken by the displaced air, as described above, will move spherical member 61 into the passage through collar 63 and restrain passage of but a negligible quantity of liquid through conduit 65. In an action of this character, flapper plate 60 is ineti'eetive to hold spherical member 61 in the full line position shown in Fig. 2. It will be observed that when the overflowing stream has been cutoff, perforation 62 serves to drain the chamber containing spherical member 61 and thereby permit said member to resume its normal position at the .bottom of said chamber.

When the tank has been filled to the desired extent, fill bushing 24 is removed and closure cap 8 placed in position. As said ea i is threaded into casing 1, washer 13 (.tllllCt by disk 14 finally engages flange 23 whereupon, due to the presence of groove 17 and screws 17 rotation of disk 14 ceases, despite continued rotation of cap 8. As a result,

washer 13 is compressed in an axial direction ed, arm 47 is moved from the full-line position to the dotted line position of Fig. 4. In so doing, said arm is swung vertically on its pivot, passed over the top of cap 8 and then l ll til

prior to the time that cap it 'lollovvs, theretore, he readily removed Without dropped on. the tar side thereoil. lllovement out arm ll in this manner edects partial rotation at shalt aid and movement oi earn it ton'ard the let't (Fig. l), or into the position shovvn in Fig. 5, vvherehy disk 39 is moved trom its seat tl, against the ezipansive tendency oi spring 3i". Accordingly, it hook til at arm all" is not dropped hehind the cap 8 as indicated hy the dotted lines in Fig. t, spring 3i vvill eapand and move disk 39 into engagement with its seat ll and lever at will he strung hack into the position shown in tall lines in ig. t.

Fipe leads to a device under pressure, as the discharge outlet oil an air compressor. Accordingly, when disk 39 is moved from its seat, as aioresaid, air under pressure is supplied to the interior oil casing l and to the surtace oil the liquid to eid'ect dis charge thereoii.

it is to he noted that closure cap d may not he removed troin casing it until alter hook d8 has heen raised and arm all permitted to svving supplying a gas to the lull line position oi Fig. t, this action,

as stated ahove, positioning disk 39 on its scat ll and cutting oil the supplv of air to casing l. Further, it is to he noted that it is necessary to retract cap 8 hut a small amount to disengage disk l l lrom its seatand that continued retraction oit said cap vvidens the gap hetvveen said disk and its seat. has a result, 8 is entirely tree lrom casing l, the air pressure in the tank and said casing has heen very materially reduced due to the escape oi air hetvveen disk it and its seat and thence to and through tloat hot 55, that closure cap 8 may damage to the operator manipulating the same, such as might occur it the lull force of the air pressure in casing l was tree to impel the closure cap just alter removal trom saidcasing. Further, passage of gasoline saturated vapors 'lrom the top oif casing l is likewise prevented any vapors oil this character having into heat hon helore cap 8 is entirely disengaged trom said casing.

idy adjusting cap it aaially oi sleeve l5, the enpansive tendency ol' spring Qt may he so regulated that valve disk 20 will move trom its seat when the pressure in casing it exceeds a predetermined value, and when this occurs, air escapes through openings l6 and aperture 5t into iloat her 55, thence through conduit tih.

l 'lapper plate tit svvings lreely to the dotted line position oi Fig. 2 to permit passage ot air or liquid tovvard the vent tank hut acts as a check valve and closes the passage through collar as, it torany reason, material should attempt to pass in a reverse direction,

What It claim is:

l. in combination, closure structure tor the port ot a tank. a conduit applying a gas under pressure to the liquid in said a valve inpasscd hat) terposed in said conduit, and structure intervening hetvveen said closure structure and valve to hold the latter in open position,

2. in combination, closure structure tor the port ot a tank, a conduit applying a gas under pressure to the liquid in said tank, a valve in terposed in said conduit, and an arm controlling said valve adapted to engage said closure structure to hold the valve in open position.

3. in combination, closure structure tor the port at a tank, a conduit applying a gas under pressure to the liquid in said tank, valve hiased to position closing said conduit, and structure connected to said valve adapted to engage said closure st rueture to hold the valve in open position.

d. in combination, closure structure tor the port of a tank, a conduit applying a gas under pressure to the liquid in said tank, a valve hiased to position closing said conduit, and structure connected to said valve adapted to engage said closure structure to hold the valve in open position and trcely movable trom engagement therewith to permit said valve to resume position closing said conduit.

ti. lin comhination, closure structure tor the port of a tank, a conduit applying a gas under pressure to the liquid in said tank, a valve hiased to position closing said conduit, a shalt controlling said valve eiitending adjacent said closure structure, and an arm connected to said shalt engaging said closure structure to i hold the valvein open position.

ti. ln comhination, closure structure tor the port at a tank, a conduit applying gas under pressure to the liquid in said tank, a valve hiased to position closing said conduit, a shalt controlling said valve extending adjacent said closure structure, and an arm pivoted to said shalt engaging said closure structure to hold the valve in open position.

'i'. -.hpparatus ot the character described comprising a port communicating vvith a tank containing a liquid under gaseous pressure, and closure cap structure closing said port in tvvo regions and movahle to first open in the region nearer the tank and then in the other region.

d. Apparatus ot the character descrihed comprising a port communicating with a tank containing a liquid under gaseous pressure, a closure cap closing said port in one region, and a second closure cap rotatahly carried hy said first-mentioned cap closing said port in aregi'on nearer the tank, said clo sure capsmovahle to lirstopen in the region nearer the tank and then in the other region.

9. Apparatus oil the character descrihed comprising a port commicating with a tank containing a liquid under gaseous pres sure, a closure cap threaded to said port in one region. and a second closure cap rotataloly carried by said first-mentioned cap closing said port in a region nearer the tank, said closure caps movahle to open in the region nearer tne tank and then in the other region.

t 10. Apparatus of the character described comprising a port communicating with a tank containing a liquid under gaseous pressure, closure cap structure closing said port in two regions and movable to first open in the region nearer the tank andthen in the other region, said port between said regions, and relief Valve structure operable upon rise in gaseous pressure within the tank above 'a predetermined value to open a pathbetween said tank and conduit.

11. Apparatus of the character described comprising a port communicating with a tank adapted to contain a liquid, a conduit, a float box communicating with said port and conduit, a member readily displaceable by liquid in said float box, and a vane of relatively light material resting upon said mem- 12. Apparatus of the character described comprising a port communicating with a tank adapted to contain a liquid, a conduit, a float box communicating with said port and conduit, a member readily displaceable by liquid in said float box, a vane of relatively light material resting upon said member, and means other than said conduit for draining liquid from said float box.

13. Apparatus of the character described comprising a port communicating With a tank adapted to contain a liquid, a conduit,

float box communicating With said port and a conduit communicating with to prevent passage of conduit, a spherical ball readily displaceablc by liquid in said float box, a vane of relatively light material resting upon said ball, means other than said conduit for draining liquid from said float box, and a check valve preventing passage of fluid material in reverse direction from said conduit toward said port.

14. Apparatus of the character described comprising a conduit opening into a tank, a float box communicating with said conduit, means in said float box preventing passage of liquid material therethrough but ineffective gaseous material. in one direction, and means for preventing the passage of fluid material through said box in a reverse direction.

15. Apparatus of the character described comprising a conduit opening into a'tank, a float box communicating with the conduit, a float therein and a vane controlling the position of said float to prevent passage of liquid through said box but permitting passage of gaseous material thcrethrough.

16. Apparatus of the character described comprising a port communicating with a tank, a conduit, a float box communicating with saidport and conduit, a float displaceable upoii rise of liquid therein to ('lose the passage to said conduit, and means normally preventing displacement of said float during passage of gaseous material to prevent generation of gas currents in said box.

CARL H. EI-ILERS.

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