US2452256A - Fluid handling mechanism - Google Patents

Description

FLUID HANDLING MECHANISM Original Filed March 9, 1 938 2 Sheets-Sheet 2 Pie. 5

Pies

gvyuq/wfo' 2 a I i Jacgues Mad/er M -2 Patented Oct. 26, 1948 FLUID HANDLING MECHANISM Jacques Muller, vested in the States Original application 194,919, now ary 13, 1948.

La Garenne-Colombes, France; Attorney General of the United March 9, 1938, Serial No. Patent No. 2,434,426, dated J anu- Divided and this application April 7, 1939, Serial No. 266,692. In France March Section 3, Public Law 690, August s, 1946 Patent expires March 20, 1957 2 Claims.

The present invention relates to the filling and emptying of reservoirs, and particularly to the nozzle, obturator and associated elements of a reservoir filling and emptying system.

One object is to provide means precluding an opening of the valve controlling the flow through the nozzle until the fluid within the nozzle is subjected to pressure thus preventing the emptying of the hose connection after separation of the nozzle from the obturator.

A further object of the invention is to provide means adapted to be subjected to the pressure .of the fluid within the nozzle to lock the valve in closed position when the pressure is cut oil and to permit opening of the valve only when the pressure within the nozzle is again restored.

Further objects andv characteristics of the invention will appear as the description thereof proceeds, for a complete understanding of which reference should be had to the accompanying drawings wherein:

Figure l is a section in turator and filling nozzle,

Figure 2 is a section, to a larger scale, of the hydraulic joint used with the nozzle,

Figure 3 is a section of a modified form of clamping mechanism illustrated in clamped position,

Figure 4 shows the mechanism of Figure 3 in released position, v

Figure 5 is a spring adapted to be utilized with the clamping mechanism illustrated.

Referring to Figure elevation of an ob- 1, there is shown an obturator adapted, as is well known, to be fixedly applied to the top, side or bottom of a reservoir or tank to be filled so as to be permanently carried by the reservoir or tank. The obturator incorporates a depression or throat 3, the upper edge 5 of which is transverse to the axis of the obturator and the lower edge I of which is inclined to the axis of the obturator, for a purpose which will hereinafter appear. The lower portion of the obturator is flanged inwardly as at 9, to provide a seal for the end of a nozzle which is adapted to be applied to the obturator.

The nozzle, generally designated may be constructed of three cast sections [-3, l5 and H, the latter of which is adapted to communicate with a hose connection (not shown) leading to a source oi'fluid or liquid. The mid section l5 of the nozzle is screw-threaded at IQ for the reception of the upper section |3 adapted to be screw-threaded thereon. A spider 2| is disposed on an offset 23 formed in the mid section l5, and is held assembled against the offset by screwing up the upper section l3 unto the mid section 2|. Suit-able sealing means of any desired nature such as rubber or fiber washers 25 are inserted at each side of the spider.

The mid section I5 is provided with an annular laterally extending flange 2?, adapted to be received within a corresponding depression 29 formed in the lower section ll. Suitable sealing means are provided as at 3|. The arrangement is such as to permit the lower and mid sections I1 and I5 to be rotated with respect to each other about an axis passing through the axis of the flange 21.

Section I1 is provided with bores 33, and 31, of different diameters. Bore 31 is adapted to screw-threadedly receive a spider 39 for a purpose which will hereinafter appear. Bore 35 is adapted to receive a bushing 4| between which and a shoulder 43 formed betweenbores 33 and 35, a diaphragm 45 is adapted to be clamped. Slidably disposed within the bushing 4|, is a piston 41 having a convex face 49, the piston being urged towards the diaphragm 45 by a spring 5|, one end of which abuts against the piston 41 and the other end against the spider 39.

The spider 39 is provided with a flange 53, bored out as at 55, to receive a sleeve 51, having a flanged end 59 engaging the spider 55, in turn positioned within a bore 6| provided in the mid section H3. The sleeve is provided with a section of smaller diameter 6-3 on which is slipped a second sleeve 65 adapted to be pinned or fixed in any desired manner to the sleeve 51. The sleeve 57 is formed with a central bore 61 in which a rod 69 connected to the piston 41, as

' by pin H, is adapted to slide. The bore 5| in the mid section |5 is also provided with a shoe 13 slidable therein a screw 15 and wind nut Tl being adapted to displace the shoe 13 to the right or to the left for a purpose which will hereinafter appear.

Within bore 33 of the sectionll, is provided a piston 79 having a, convex face between which and piston 4| the diaphragm 45 is disposed. Piston 19 is fitted with a rod 8| extending through a bore 83 in a bushing 85 disposed within a bore 9! of a wall of the section ll. Suitable sealing means such as seal 89 is provided between the bushing and the rod 8 l. The rod 81 is provided with an enlarged head 9| from which extends a pin 93 having a threaded end for the reception of a lock nut 95. The pin 93 passes through, with considerable play, an opening 8 in a lever member 99, pivoted at ||l| in a boss E83 formed on the lower section I1. A lever member I55, having an opening I01 therein through which pin 93 passes loosely, is held by the lock nut 95 in abutting relation with respect to lever 99, the arrangement being such however that a certain sliding of the lever 99 with respect to the lever member I 95 is permitted. Leverv member I95 is pivoted at I09 on the mid section I5, and provided with an extending arm III, for a pur-. pose which will hereinafter appear.

The upper end of the section I3 is provided with an annular olfset H3 and a threadedfiange II5. Between the flange H 5 and a cap- [#3 adapted to be threaded thereon, is clamped a seal I I 9, a portion 1 2I of which is adapted to extend into contact with a wall of the obturator when the nozzle is assembled thereon... All

nular spring I23 is provided to urge thewasher into closer contact with the wall of the obturator.

The section I 3 is further provided with an an-' nular internal flange I25 forming a seat for the washer I27- or other suitable seal adapted, when the nozzle isassembled on the obtura-tor, to be urged intotight contact with the internally flanged base 9 of the obturator.

A sleeve I29 encompassing the upper section I3 of the nozzle and formed withan inwardly inclined cam-like portion I3I' is centered upon the section #3 by pins I'33-I35' or any centering means found appropriate; The sleeve #29 is adapted to be reciprocated axially with respect to the section I3 and for this purpose the sleeve is connected by any means found suitable (not shown) to arm III of the lever Hi5. An annular spring I31 having an internal diameter normally greaterthan the diameter of'the; obtura-tor I is held within the sleeve I33 by -ineans of the cap Ill and the cam: portion I-3I of the sleeve.

It will be obvious that when the nozzle is assembled on the obturator, on; displacement of the sleeve I29, upwardly (Fig. 4), the annularspring I3? is permitted to expand'whilst on displacement of theeleeve I29 downwardly (-Fig. 3), the annular, spring I'Zl is urged by the'inclined surface I 3-I into the throat or depression provided in the obturator to hold; the'obturator-and nozzle in fixed relation with respect to each other;

Within a bore provided therefor in the spider 2!. is positioned for sliding movement therein a hollow rod I139; on the, upperend: ofwhich is mounted in. any desired manner a valve i tI adapted to cooperate with a seat I43 formed on the flange I25, sojas to oontlTQl the flow of fluid through the nozzle. A pin [$5 is positicnedwithe in the hollow rod I39. and between the base. of the hollow M71 and the pin M5 is disposed spring Hill which. a ts as acushion on closing the valve. The rod I39 carries a transverse pin, [5! between which and thelower 611d.Qf" the pin.

I45, engages the end ofja lever- I53; pivoted at I55 on a stirrup I5'Icarried' by the mid section I'5 Within the mid section I5 and eccentrically thereof is provided a bore I59. Extending through the bore I59 and. seated on a bearing I61, formed in the end thereof is the valve operating shaft I53. The shaft I63 is held within the bore by a threaded bushing I65, threaded into the base of the bore and? through which a portion of theshaft I Slof reduced section passes. A handle I 69 is connected to the, reduced portion of the shaft I6] in any. desired manner permits the rotation of the shaft in the bore. Itis to be noted that thebore'l59fis' intersected by the axes of the piston. rod 69 and that the shoe I3 may be; moved into engagement: with the, shaft I 63' to clamp' the latter in one position 4 and may be moved away from the shaft in order to release it for rotation by the handle I653. The shaft I83 adjacent the lever I53 is formed with an helical groove I H in which is positioned a rounded head I I3 provided on the lever I53. It will be obvious that on rotation of the shaft I59, the helical groove will efiect operation of the lever I53 and thus closing or opening of the valve MI. Provided in the base of the shaft I63 and co-axial with the piston rod 69 is a bore I I5. When the shaft IE3 is turned into the position corresponding to.- cl'osure of the valve I4! the bore I is positioned opposite to the piston rod 69,

so that displacement of the piston rod 63 to the right will cause it to engage within the'bore I15 and thus: lock the shaft I63 in position.

Intermediate its ends, there is provided in the Shaft I63 a further transverse bore I 19. Adiacent the bore I19 and slidably engaged in a bore I8! formed in a boss I33 on the mid section I5; is a pin 35. The pin iscarried by a. spring bellows-like organ I 8"? that is positioned within the section #5 and-adapted to besubjected tothe pressure of the fluid existing therein or passing theret-hrough. Th bellows IJS I' may be. conveniently carried by a plug 9-89 which may be threadedly' received in opening I91, provided in the mid section I-5-. It will be evident that when the. valve actuating shaft I63 is turned to the position corresponding to valve M I closed that the pin r85 will be co-axial with the bore I TQ formed in the shaft I63. At this time, if the pressure on the fluid within the nozzle is out off the bellows member 98! will expand and thrust the pin I35: into bore I'I-S, thus locking the valve actuating: shaft I63 in positionwith the valve I 'rl closed.

The operation of the device is briefly as follows: 1

'In' order to clampthe nozzle to the obturat'or of areservoir tobe filled, lever 99 must be moved inwardly, against the pressure ofspring' 51-, to ward the section H- inorder to raise the sleeve I29 and thus permit the spring t3? to expand. Subsequently, the nozzle is adjusted intoposition on the obturator as shownin Figure 6- and thereon the lever 99 is released and the spring 5i urges it outwardly 'tolower the sleeve I23; This results in forcing the spring, throughthe intermediary of the cam portion. I31, into the groove or. throat 3 and thus clamps the obt'urat'or and nozzle in assembled relation.

Assuming that, the nozzle is' clamped in position on the obturator. and that the valve MI is closed, it will be seen from Figure 1' that only when the valve is closed may the lever 59 beoperated" against; the pressure of spring 5I- to raise the sleeve I33. and thus release the spring- 63? from; clamping position. Since the bore H5 in the; valve operating shaft' IE3 is" only concern tri'c withthe pin I59 of thejpiston l'lj when the valve is in:c1osedposition; itwill be obvious that it is only" when the valve is' in closed posit-ion that-level" 99 may he moved towards the section ITto raisethesl'eeve I29: Duringthis, operation; piston: 4"! is; moved to the right against pressure" of; spring, 5i and the piston rod 69 moves into. the depression H5 in" thevalve operating shait I63: It shouldbeinoted that when the-val've-i-s in: closed position and the*pre'ssure-' to the nozzle" is cutoil; the bellows I'S-Iispermitted to expand and thusforcestherod' I85 into the bored-19in valve in closed position.

"Sllffhj an arrangement, as wilr be obvious, pre

eludes an operatorii-om separatingthe nozzlefrom the obturator when the valve is open and further precludes him, after the removal of the nozzle from the obturator, from emptying out the liquid contained in the hose connection by which the nozzle is connected to the source of supply. Thus such an arrangement precludes therefore unauthorized emptying of the hose and assures that the proper measure of liquid will be forced into the tank.

Referring to Figures 3 and 4, wherein corresponding reference numerals indicate the same elements as in Figure 1, it is to be noted that the formation of the cam surface I3I has been modified. In Figures 3 and 4 this surface, instead of consisting of a plane incline, comprises cam surfaces I32, I34. With this formation of the cam surfaces, it will be apparent that on lowering of the sleeve I29, the spring I31 will first be engaged by the cam surface I32 which surface by the way cuts the axes of the nozzle with a greater angle than does the surface I34. Consequently, the surface I32 operates to compress the spring I37 rapidly and urge it into the throat or depression No. 3. Subsequently, on further lowering of the sleeve I29, the surface I34 of lesser angle, operates to tighten the spring in the throat or depression. In this connection, it should be noted that in clamped position of the nozzle on the nipple, the force of the spring I31 opposing its compression, has a component parallel to the axis of the nozzle and nipple operative to urge the nozzle and nipple towards each other to compress the seal at I21.

Referring to Figure 5 there is illustrated a type of spring I31 which has shown itself particularly effective. This spring comprises an annular spiral spring I38 within the interior of which is disposed a split spring ring I40, the split in the spring ring I40 being sufliciently large to permit considerable compression of the coil spring I38. This split spring ring operates to preclude deformation of the coil spring I38 out of the normal plane of the spring but permits contraction of the coil spring I38.

This application is a division of my application No. 194,919, filed in the United States Patent Office on March 9, 1938, which matured into Patent 2,434,426, January 13, 1948.

What I claim is: Y

1. In a device of the class described, an obturator, a nozzle adapted to be afiixed thereto and separated therefrom, a valvecontrolling the flow oi fluid through the nozzle, means precluding removal of the nozzle from the obturator when the valve is open and means precluding opening of the valve when the fluid in the nozzle is not under pressure.

2. In a device of the class described, an obturator, a nozzle, clamping means operable to fix the obturator and nozzle relatively, a valve controlling the flow of fluid through the nozzle, means for actuating the valve, means precluding operation of the clamping means when the valve is open and means adapted to block the valve in closed position when the fluid in the nozzle is not under pressure.

JACQUES MULLER.

REFERENCES CITED The following references are ofrecord in the file of this patent: 1

UNITED STATES PATENTS Number Name Date 477,125 Johnson et al June 14, 1892 637,505 Franklin Nov. 21, 1899 855,242 Goldsmith May 28, 1907 902,192 Witzenmann Oct. 27, 1908 1,428,933 Bean, Jr. Sept. 12, 1922 1,507,015 Zimmerman Sept. 2, 1924 1,673,003 Fesler June 12, 1928 1,775,427 Gregoire Sept. 9, 1930 1,883,843 Woodford Oct. 18, 1932 1,890,847 Flory et al. Dec. 13, 1932 1,990,741 Marvel Feb. 12, 1935 2,030,143 GigerKnusli Feb. 11, 1936 2,067,445 Ginter Jan. 12, 1937 2,124,493 Mejean July 19, 1938

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