US2188682A

US2188682A - Dispensing device

Info

Publication number: US2188682A
Application number: US88624A
Authority: US
Inventors: Goetz Otto
Original assignee: RE Chapin Manufacturing Works Inc
Current assignee: Chapin Manufacturing Inc
Priority date: 1936-07-02
Filing date: 1936-07-02
Publication date: 1940-01-30
Anticipated expiration: 1957-01-30

Description

O. GOETZ DISPENS ING DEVICE Filed July 2, 1956 Jan. 3o, 1940.

2 Sheets-Sheet l.

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Jan. 3p, 1940. o. GoETz 2,188,682

DISPENSING DEVICE y Filed July 2, 1936 2 Sheets-Sheet 2 Patented Jan. 3o, 1940 UNITED STATES DISPENSING DEVICE Otto Goetz, Batavia, N. Y., assignor to R. E. Chapin Manufacturing Works, Inc., Batavia,

N. Y., a corporation of New York Application July 2, 1936, Serial No. 88,624

6 Claims.

'I'his invention relates to a compressed-air sprayer of the tank type, adapted to be carried about by the user during the act of spraying trees, shrubs, flowers, and other plants, or it may be lused for spraying Whitewash, cold water paint, oil, or other liquid substances for various purposes.

Devices of this kind are designed to contain spraying liquids, and by means of a pump, usually arranged axially in the tank, cause the liquid to be ejected under considerable pressure. The tanks of such devices usually have a closure from which the pump is suspended, and in order to refill the tank with spraying liquid, such closure must beremoved from theiilling opening, but due "to the internal pressure applied to the closure by.

the compressed-air within the tank, diflieulty is experienced in opening the closure, or even in loosening the same Vso as to allow the air under pressure to gradually escape with 'a View of more readily removing the closure from thetank to permit of reiilling the latter. Moreover, spraying devices of this kind have comparatively small ll-- ing openings.

One of the objects of my invention is to provide a closure which will permit the pressure within the tank to be quickly and easily relieved, 'and also to provide a comparatively large lling openn ing, fully7 covered by the closure, so that the tank can be more easily supplied with the spraying liquid than has heretofore been possible, and at the same time give assurance that the closure will be subjected to equal pressure around its entire circumference. l

Y Other objects of my invention are theA application of maximum leverageto the closure by means of a screw-threaded element capable of applying a powerful wedge-force to the axial region of the cover, so that the latter will besealed with equal pressure around the filling opening and effectively guard against leakage `of air-pressure kvfrom the interior of the tank, yet permit the cover to be easily loosened to allow the air-pressure Within the tank to escape, and thus assist inthe more 4ready removal of the closure from the tank for the purpose of conveniently refilling the same.

With the above and other objects to appear hereinafter, my invention consists in the combination and arrangement of parts, and in the novel features of construction to lbe hereinafter described and kmore particularly pointed out in the subjoined claims. r

In the drawings, l Fig. 1 is a side elevation of a liquid-spraying tank equipped with my invention. Fig. 2 is an enlarged vertical section through the upper portion thereof `taken on line 2 2, Fig. 1.

Figf3 is a top plan View of the tank reducedin size from that shown in Fig. 2.

Fig. 4 is a reduced transverse section taken on line 4-4, Fig. 2.

Fig, 5 is a transverse section taken on line5-5, Fig. 2.

Fig. 6 is a transverse section taken on line li y Fig. 2.

Fig. 'l is an enlarged vertical section taken through the filling funnel of the tank on line 'I-Q'I, Fig. 3, the yoke bar and the closure being omitted.-

Fig. 8 is an enlarged section taken on line 3 8, Fig; 3,' looking in the direction of the arrow cross,-l ing said line.

The tank includes a bodyportion Ill having-a' rounded shoulder wall I I to which is secured the filling funnel I2 of the device.l The lling funnel is of somewhat smaller diameter than the body portion of the tank, and its peripheral wall I3 is curved outwardly and downwardly at its upper end, as at I4, to stiften the vsame' and vgive it a finished appearance; also to more conveniently` permit thetank to be emptied. At the lower end of thiszperpheral wall I3, a comparatively wide: inwardly-directed flange I5 is formed, around the inner portion of.k which is bent the sheet-material forming the shoulder wall I I, as at' I6; the rebentv` or recurved portion directed over the flange I5 determining the diameter of the filling opening, designated by the numeral I1, and servingalsol as a seat for the closure I8. This construction enables the'funnel to be made quite large in diamv` eterand thus saves time in filling the tank,` and at the same time making it more convenientto fill as well as to drain orrempty the tank. The filling funnel is therefore considerably larger than the lling opening and can, if desired, bemade still larger without varying the size of the filling opening. It has been 'found to be ofA advantage` to reduce the diameter of the filling opening for certain types of spraying tanks withoutreducing the diameter of the filling funnel, but in all in stances the lling funnel vwill be measurably larger than the filling opening. Such variations are permissible onlyl by reason ofthe particular construction defined. f

The closure I8 is of circular formation, bent or otherwise fashioned at its marginal portion to provide a downwardly-facing groove or vvasher-k fill Sil

' seat I9 directly over the recurved portion ofthe shoulder wall Il. This washer-seat, which is ofV channel formation and circular in contour, has al washer 20 entered therein which is designed to b ear against the recurved portion of the shoulder wall. The closure closes downwardly and is provided centrally with an upstanding boss 2i and as this closure is constructed of heavy sheet-material, both the washer and the said upstanding boss are stamped therein. The boss 2| is therefore hollow and provided with internal screwthreads 22.

The pump employed in this tank is similar to those commonly used in tanks of this kind, and the upper end thereof only is illustrated. It comprises a pump cylinder 23 having a anged en ternally-threaded collar 2t surrounding its upper end and it is welded or otherwise secured thereto in any approved manner and designed to have its threads engage the internal screw-threads 22 of the central boss 2l on the closure. In this manner the pump is axially suspended from the closure and is removable therewith.

Bearing against the upper face of the boss 2l is a power or clamping lscrew 25 which is provided with a screw-threaded bore 26 extending upwardly thereinto from the lower end thereof. This bore is adapted to` receive a packing nut 21 between which and the inner end of said bore 25, packing 28 is compressed. This packingnut is enlarged along its lower portion to form an upwardly-facing shoulder 29, which bears against a washer 30 disposed between said shoulder and the underside of the power or clamping screw 25 while retained within a central opening 3 in the upper wall of the boss 24. At its lower end the enlargement of saidl packing nut is provided with an outstanding flange 32 between which and the top wall of the boss 2| a spiral expansionspring 33 is'disposed, said spring surrounding the enlargement of the packing nut and being designed to maintain the power or clamping screw 25` yieldingly in contact with the closure 8, or more particularly the upper surface of lthe boss 2l on said closure.

From the foregoing it will be apparent that the pump cylinder 28 depends from the closure I3, and by reason of the yielding connection between the closure I8 and the power or clamping screw 25, said device is also maintained at all times in assembled relation with said closure.

Stamped into the peripheral wall of the iillingA funnel l 2 from the inner side and at diametrically opposite points thereof are lock notches ordepressions 34, the stamping of the same providing projecting portions on the exterior of said peripheral wall. Each of these notches or depressions comprises three parts; one an entrance portion 35 which opens at the upper `edge of said peripheral A lock element inthe form of a yoke-bar it is` screw-threadingly connected with the power orv clamping screw 25, and it is preferably constructed of heavy sheet material stamped to form a cen--` tral boss 4i which is internally screw-threaded to receive the external screw-threads of said .power or clamping Screw. Said lock element or yokebar extends diametrically over the closure i8 and is of a length somewhat greater than-the internal diameter of the lling funnel l2-so as to permit rection of the arrow #i2 in Fig. 8, and as they reach the bottom walls of said entrancev portions, said yoke-bar is given rotative movement to cause the ends thereof to move through the passportions 31, in the direction of the arrow 43 in Fig. 8;

The power or clamping 1o This upward movement will result in opposite ends 'of the yokebar engaging behind the lugs 39, am essa-id terminals of said yoke-bar will be firmly pressed against the upper or overhanging surfaces of the lock portions 36, with the resultsthat screw or wedge-like pressure will be appliedcentrally to the closure i8 to force the same downwardly at its marginal portion against the recurved portion 'i6 of the shoulder wall, and due to the tremendous i power or clamping screw is tightened, the ends orl leverage appliedto said closure by means .of said power or clamping screw, the washer 2t` will be subjected to Aequal pressure throughout its circumference, thereby preventing leakage of air from within the tank. The direction of rotation of said power or clamping screw depends on the direction of the screw-threads formed thereon,I and while I have in the drawings shown the direction of rotation to ybe counter-clockwise, such action will preferably he reversed. A reverse rotative movement of the ypower or clamping screw will resultin the loosening of the lock element or yoke-bar so that gradual exhausting vof then35 pressure from within the tank can take place, and as the tank is gradually beingrelieved of pressure,

the complete disconnection oi said yoke-bar fromthe peripheral wall of the -lling :funnel can be` easily made, with the result thatl the yoke-bar, cover, and pump, as well as the power or clamping ,l

screw, can be conveniently lifted from thev tank as a unit so as to leave the large lling opening yl1 provided in the top structed.

To permit ofthe ready manipulation ofthe` of thetank entirely unob-l power or clamping screw, thewupper end of the j latter is enlarged and made hollow so as to. provide an internal overhangingange 45, which is provided with anotch 4S vfor a purpose 'topres-l ently appear. Slidably arranged within the power or clamping screw 25 and within the packing nut 22 is thepiston-rod 41 of the pump-or the pump.-

rod as it may be termed, the lower end of which i.

is provided with a suitable disk or other pistonor plunger slidable within the pump cy'linde`r23,v in

the same manner as provided for in pressure l.

This pumpl pumps now in use in spraying tanks. rod is reducedin diameter atits upper end to form an upwardly-facing shoulder t8, vand on this re- .duced end is pinned or otherwise secureda' handle 49, Vprovided with ahub` or cylindrical portion 553 passed through the central opening 5l formed'by the flange @5in the hollow upperv end or head yof I. GS

said power or clamping screw. Projecting laterally from the hub or cylindrical lportion .of said handle is a stop-lug 52 which is 'designed to' en gage an inwardly-projecting stop 53 extending i, inwardly from the peripheral wall of said hollow portion'or head. Uponrotating `the `handle i9 and the piston rod 41 until the stop-lug 52 on said handle is brought in line with the notch d6, the reciprocation ofthe piston rod is permitted for the purpose of subjecting the liquid-within the'Y tank to the desiredpressure. -Afterthe pressure is built up to the desired degree, the handle again may be moved rotatively to bring the stop-lug 52 thereon in line with said notch 46 and allow said K lug to enter the hollow portionror headof the power or clamping screw; and upon then turning the handle, said stop-lug will engage either one or the other side of the stop 53. When the stoplug 52 is in either ofthe two last-mentioned positions, or in any other position notv in direct alinement with thenotch' 46, the 4pumprod and its piston or plunger will be locked in its lowered position, dueto the fact that the inwardlydirected flange 45 on the hollow head of said power or clamping screw will prevent upward 'movement of the piston or pump-rod, and movement in a downward direction will naturally be prevented by the bottom wall of said hollow head.

Assuming the parts to be as shown in Figs. l and 2, and the power or clamping screw to be provided with a left-hand screw-thread, as shown, the piston or` plunger of the pump will be in its lowered position with the handle locked to the power or clamping screw, the yoke-bar 40 in iirm contact with the upper walls of the lock portions 36 of the notches or depressions 34, and the closure I8 firmly seated toI seal the iilling opening Il, In order to release pressure on the closure I8, the handle 49 will 4have to be rotated clockwise to bring the stop-lug 52 from the position shown in dotted lines in Fig. 6, or from any other position it may be in, to that shown in full lines in said I yoke-bar 4t. and due to said power or clamping screw being held in firm contact with the cover through the medium of the spiral spring 33, easement of the ends of the lock element or yoke-bar` will take place, which permits a corresponding easement of the washer 20 around the marginal portionv of the closure from the tank structure, which it is to be understood includes the lling funnel l2, Consequently, pressure from theinterior of the tank will be relieved so that a free rotative movement is provided for the handle and the power or clamping screw, and an unstrained lowering of the lock element or yoke-bar assured. During such operation, the air within the tank is released and the closure is completely relieved of internal pressure.

When the ends of the lock element or yoke-bar are lowered to the common lower wall of the three

portions

35, 36 and 31 of the depressions or notches 34, said ends may be moved through the pass' portions 31 so as to enter the entrance portions 35 and thus permit the free removal of said lock element or yoke-bar from the tank, and with it, the connected lparts including the complete pump with its handle, the power or clamping screw, and the closure. Removal of these parts from the tank leaves the filling funnel unobstructed and presents a comparatively large filling opening so that the spraying or other liquid can be easily poured into the tank and the level of the liquid determined at all times during the act of reiilling the tank. When the tank is relled-,the assemblage comprising the pump parts, power or clamping screw, lock element or yoke-bar, and closure may then be placed on the tank by a mere reversal of the operative parts from that required for removing the cover; it simply being necessary to reverse the rotative movement of the leverage screw-device after entering the ends of the yoke- 1oar in the lock portions 36 of the depressions or carried about.

notches 34 by passing said ends through the entrance portions 35 and pass portions 3l.v When so reversing the movement, the stop-lug 52 on the hub of the handle 49 will engage the stop 53 in the hollow head of the power or clamping screw, asshown in dotted lines inFig. 6, and thus cause tightening of said screw within the lock element or yoke-bar when rotating the-'handle 4,9 "in a counter-clockwise direction. Obviously,` the more pressure exerted on the leverage screw-device by means of the handle 49, the more powerful will be the pressure exerted by the ends of the yokeelements as they may be termed, need not necessarily be embodied in a peripheral or circular wall, since they may rise separately from the tank and serve the same purpose'. vention is capable of use with or without the employment of a filling funnel. .It will also be apparent that when using a iilling lfunnel, thelling opening of the tank will necessarily be rel stricted in size to a diameter smaller than that of the peripheral wall of said lling funnel, whereas if the stirrups orManchor-elements are independently used at diametrically opposite points without resorting tothe use of a peripheral or circumferential wall serving as a lling funnel, such Consequently the in-'` stirrups or anchor-elements may be spaced apart a greater distance and may even be separated a distance greater than the diameter of the tank, so that the iilling opening could be as large in diameter as the internal diameter of the tank,\or approximately so.

It may here be stated that, likev all compressedair sprayers of this type, a ilexible hose or simi- .lar conduit 54 is connected to the upper end of -directed therethrough. This hose or conduit is therefore under manual control, and when opening the same to the flow of the spraying material, the pressure within the tank will cause the liquid to be passed thereinto and sprayed from the nozzle. v

I also' provide the tank with a shoulder strap 55, such as usually employed in sprayers of this type, so as to enable the device to be conveniently Having thus described my invention, what I claim is:

l. A compressed-air spraying tank having an inwardly-directed shoulder wall provided with a comparatively large opening and having the metal at said opening rebent, a comparatively large filling funnel of somewhat smaller diameter than said tank and of larger diameter than said opening applied to the ytop of said shoulder wall and including a comparatively wide inwardly-directed laid, said filling funnel including a peripheral wall having internal lock-notches, a closure for said vopeningincluding a Washer in contact with the exoA rebentportion of said shoulder wall, a lock-elementextending diametrically over said closure over the inner portion of which trie repent portion of said shoulder wall is laid, said funnel being rof a diameter somewhat larger than that of said opening an v somewhat smaller than that n. of said tank, saidglling vfunnel including a peripheral Awall having internal notches, a closure for said opening including a washer in Contact with the rebent portion of said shoulder wall,v a lock-element extending diametrically over said 5, vclosure and having opposite ends thereof detachably engaged in said lock-notches, an externallythreaded device threadingly engaging said lockelement midway between its ends and in yielding Contact with the central. portion ci said closure iQ/,at its lower end, and rneans to rotate said eX- ternally-threaded device clockwise or counterclockwise.

3. A compressed-,air spraying tankhaving an opening centrally in its top, and a closure strucryture removable as a unit from 'tank and comprising. a closure placed over openingl to close the sam-e, a lock-element disposed above said closure detachably locked to said tank, a screw power-device threaded into said lock-elemsment and bearing centrally against said closure,

a nut extending through said closure 'from the inner side thereof and threaded into said screwpower device, said nut having a harige at its lower end, and a spiral-spring surrounding said Knut and bearing at one end against said flange and at its other end against the under side of said closure.

LA compressed-air spraying tank having an opening centrally in its top, a closure having a hollow upstanding central boss internally screwi threaded and having also a central opening in the upper wall ofy saidlboss, pump having a cylinder depending from said closure and threaded into said boss and a pump-rod :reciprocal in M l saidy cylinder, a screw poirier-device against the upper surface of said boss around the opening therein, a nut entered into said screw power-device from the bott-cin thereof and extending into said cylinder, saidrnut having an bearing p outstanding ilange atA its lower end, a. spiral-.-

spring sur'rounding'said nut between the .topwa11.;, of said boss and said flange .and serving to1ho1d` .y said screw power-device yieldingly in contact f withsaid boss, said pump rod passingthrough said nut and screw power-device and havingai handle at its outer end, and means connected to said .tank into which said screw power-device'l is threaded sofas to cause pressure Ato be eXertedi centrally on said closure upc-n rotating said screw j power-device in a given direction.v

5. A compressed-air spraying tank havingan opening centrally inl its top,A a closure havinga hollow upstanding central boss internally screw-f threaded and havingfalso a central `opening-inr the upper wall of said boss, a pump having acylinder threaded into saidboss andv depending therefrom, a screw power-device bearing'against the upper' surface of said boss around theopen-- n 20am: duced to form an upwardly-facing shoulde'rand:

ing therein, a nutfhaving its upper portion rehaving said upper reduced portion threadedfinto."r said screw power-device from the bottom, af:-

washer within the opening of said boss-between said screw power-device and said upwardlyaiacing shoulder, said nut having a projectingipor- 1 tion at its lower end, aspiral spring `between said projecting portion and .the top wallof said" boss, and a pump-rody extending through said nutff and screw power-device and havinga handle at `itsouter end to actuate said pump rod. i l

6. In a compressed air spraying tankihaving* an opening centrally inits top; a combinedclo- Y v structure and pump `removable as a runitn from said tant; and comprising a closure placed over said opening to close the same, alock felenient disposed above said i closure detaehalclyY locked to said tank,` a screwpoWer-device thread- Y ed into said lock element and bearing-centrally:

against said closure, a nut extending through said closure from the `inner side thereofuand threaded into,4 said screw power-device, said fnut bears, saidv packing nut havingaiiangef at its lower end, a spiral spring'surrounding said nut and bearing at one end against saidflange andl at its other end against the under side of said closure, a depending centrally' from said ciosure and having a pumpfro'd extending -upwardly through said nut-andsaid screw powerdevice and having a handle at-its outer end to actuate said pump rod and means lfor interlocking said handle with saidscrew power-device vto prevent actuation of said pump rod andto-causa actuation of said screwpower-*device* upoirrotation of said handle and to disengagev said han-1 5...

die from said screwv power-device to allow'actuation of saidpump-rod. l

OTTO KGOEKJIZ.`

. CERTIFICATE OF CORRECTTON. Patent No. 2,188, 682. January 50, 19ML OTTO GOETZ.

It is hereby certified that error appears in the printed spe oifioation of the above numbered patent requiring correction as follows: Page li, second column, lines h2V and h5, claim 6, for the words "said nut bears, said packing nut'l read said nut; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the oase in the Patent Office.

i Signed and sealed this l5th day of March, A. D. 19M).

Henry Van Arsdale (Seal) Acting Commissioner of Patents.