US2638255A - Sprayer tank - Google Patents

Description

y 12, 1953 L. FLETCHER 2,638,255

SPRAYER TANK 2 Sheets-Sheet 1 Filed Feb. 14, 1947 2 Sheets-Sheet 2 May 12, 1953 Filed Feb. 14, 1947 Patente d May 12, 1953 PATENT OFFICE SPRAYERLTANK Lynn L F e ch r ll M ch-L assign to Bowen-Specialty Company, Lowell, Mich, a cor- *poratiorr or Michigan Apalicaticn February 14, r9471, Serial Namath f ,The invention relates to spray r anks an setse and," more parti ula ly, t sp ayer a similar apparatus tanks at he portable type, that i 'thosewhich a e ear ieclabout pe so u in h m, adaptedte'hewsevera len of iquid uch as s a sipain o 's i s ticidesand "other chemieai preparations. Generally such tanks are carrie chb'y a suitable harness onhy shoulder 'strapsand-are adapted to" he put under substantialpressure-through themedium of ,compresseclair or other 'gas; In *theemhodimentchosen for illustration herein, the tank is equipped-with a seif containedair pump; "the ar rangement and attachment mechanism tor which form the'subject matter-oiace-pending application- Serial Die-5995258, fileel'fi-une-lsg 1945; new Patent No. 235291345, 'and' of- 'which this applicationisa division; Theaembodiment hereot also includes a filling opening through: which the liquid" contents may be supplied and i emptied and through which-the particular-pump barrel and. associated parts are inserted 1 and removed for assemblyrand disassemblyy respectively; this subject matter Jbeingdiszclosed andclaimed in a (impending application; flocket' NofAfiw; Serial No. 721,400,.- filed. January 510, '.,194'l, now- Patent Nor 23577221, as aixdivisionfzot said-application Serial-No..599;258;i

One of the.:primanyi-purposcssof thew-invention hereini disclosed, is .touprovide .an arrangement --whereby the "nipple; by @whichta those .or .iiexible conduit is connectedewitnthe interiorof thetank, is fully protected zfromainjury: duringmanuilav .turingr. operations; shipment .and11sc, this.'.-0bl ti e also extendingxto protection :of th r .conclnit. end: where it is connected with the nipple and to l the 1 lamping-means or. other arrangement whereby the conduit and ninpleare secured creonne ted together.. This ieatursisrespeeially useful in; po table: sprayer-s :since it prevents the conduit clamp; the and n pple-irom catch ng o bran hes, vinesandherlohstrum h s-m nimizes cha ces tor-dirt enterin zthe n ain r r tank when-ithe -eonduit whose is removed; and aids. "materially in guarding the nipple fromlinjury ,duringshipment. I

Many other objects-0r purposes as "well as the advantages, otatherinventionl willlb'e readily appreciateli and understood after reading-thermilow ing' description and cla'imsand after viewing the drawings in which;

Fig. 1 is .a side elevation 01 agprayingapparatusvineluding a pressure tanklren bodying a prevferred form of the invention; V

1Fig...: 2'is1a fragmentary elevation of :thsupper portion of the apparatus the yiewloein rection of the arrows.

The liquid container is of generally cylindrical form and may be composed of a cylindrical central section 2 of relatively light sheet metal, and top. and-" bottom sections 3 and 4 of substantially heavier sheet metal to Withstand the blows and impacts to'which the container may be subjected in use. The top and bottom sections may besecured to the central section by. riveting or soldering or in any other suitable I manner to efiect 'flu id'tightjoints under such pressures as those to which thecontainer may be subjected. Lightness-*-is an important feature for portable containers butthey must also be leak-proof and able to withstand severe use.

A self-contained pump, the barrel or cylinder of'which is designated 5 and the handle for the piston of which is designated 6, is mounted in and through the-top section 3 and firmly secured thereto. The construction of the pump mounting: and themethod by Which it is assembled in the tank or container through a fill opening adapted to -he tightly sealed by a closure or cover "1., aremore :fullydescribed in said application Serial No. 599,258. The cover l has a floating hinge :conne'ctihn comprising hooks 8 (one only 'shown') Land'eyelets, througnwhich the hooks pass, in :a bracket ii -secured to the to of'section 3. When the coverisrelea-secl to uncover the fill opening 'it may depend into the container as indicatedinadotted lines-in Fig. 3.

Liqnid tosbe sprayed is loaded into the'contamer, through the fill opening, to some predetermined level-whereupon the cover 1 is secured over the opening and the vcontainer and its contents arze put'under pressure by operation of ,the "The air under'pressure in the upper portion-.0 the" container will tend to displace the lignid through a discharge pipe .or tube I! which leads tothe exterior of the container-Where itterminatcs in anionic 12 adapted to be received a base or flexible conduit is which, in

turn, leads to-a spray: nozzle (not shown). A hose=c1amp or other l similar-device is may be used-firmly to secure the'conduit to the nipple.

Prior to'this invention, thepipeor tube H has been extended through the container wall so that it's terminal cr -nipple end was disposed in the open or outside-and-beyond the Wall surface, area of the container. Thus'situated thenipple, the oonnectingend -of .the flexible conduit orhose and any horse clamp were openly exposed tor-various hazards. Vines and branches not infrequently caught on the hose and hose clamp at the connection tending not only to effect disconnection of hose and nipple thus permitting loss of the container contents, but could injure the nipple in such manner as to cause the connection to leak. Furthermore, if, as duringshipment, repair or accident, the hose or flexible conduit should be detached from the nipple, there was nothing to prevent dirt and debris from lodging in the nipple and entering the tank or container, or, to prevent serious injury to the nipple. These as well as other objections and undesirable possibilities are entirely avoided or obviated by our arrangement by which the nipple is located and terminates wholly within the general confines of the container or tank wall and by so relating the nipple to the tank wall that it has a structuralsecurity and a security safety factor equal to if not greater than any prior type of construction despite an axial inclination of the nipple at an acute angle to the axis of the tank. Of course, the termination of the nipple within the general confines of the tank wall will also fix the location of the hose or conduit end and the hose clamp in the same place.

These ends are attained by cutting away the container or tank wall as indicated at I5 in Figs. 2 and 3, shaping a piece of sheet metal to form a flanged cup generally designated I6 and securing the flanges I1 by soldering or otherwise to the margins defining the peripheral edges of the tank wall about the opening I5. It is preferable that the bottom wall I8 of the cup be so formed that it be inclined (at least in the plane of the section of Fig. 3) at an acute angle to a plane normal to the axis of the tank and that the other wall I9 (at least in the plane of the section of Fig. 3) be disposed approximately at a right angle to the bottom wall I8. From such midsections of the walls I8 and I 9 these walls may be shaped in any suitable form and manner to abut the flanges I1 against the inner surfaces of the tank sections, as will be understood.

The bottom Wall I8 of the cup I6 is drilled or punched as indicated at 2| for the discharge pipe or tube II which extends to a place closely adjacent to but spaced from the bottom of the tank and is secured in position by a clip 23 riveted or otherwise secured to the tank side wall as indicated at 24. Where the tube II passes through the wall I8 it is soldered or otherwise secured thereto in such a. manner as to provide a leakproof joint 25. Preferably the axis of the tube II is disposed at right angles to the illustrated section of wall I8. The outer end portion of tube II provides a coupling nipple I2 adapted to be inserted within the end portion 21 of a rubber .or other hose or flexible conduit which may be firmly secured to the nipple by a hose clamp I4.

The construction and arrangement thus provided furnishes a most satisfactory solution to problems heretofore encountered. By reason of disposition of the nipple I2 wholly within the recess formed by cup I6 the nipple is protected against injury and dirt; likewise the hose or conduit end 2'! and the hose clamp I4 or other fastening means are similarly situated and protected. Branches and vines are prevented from snagging on or directly contactin the nipple, connecting conduit end and clamp. Furthermore, the angular relationship of the walls of cup I6 and the angular disposition of the tube I I and nipple I2 determine the desired angle at which the nipple and hose or conduit initially project from the spray tank while, at the same time, give maximum structural strength. The recess provided by the cup I6 will be made of such dimensions as to permit the necessary access to efiect coupling and uncoupling between the conduit and nipple.

Since the details of construction and arrangement may be varied over a wide range without departing from the fundamentals of the invention, we desire to be limited only by those fundamentals as defined in the following claims.

I claim:

1. In a portable spraying apparatus, a fluid container having a substantially cylindrical side wall, a portion of said Wall between the container ends being reentrant to provide a recess opening to the exterior of the container, said reentrant portion includinga wall part inclined inwardly and toward one end of the container and inclined in a plane which is at angle to the cylinder axis and a second wall part substantially at right angle to the first said wall part, the second Wall part being inclined inwardly and toward the other end of the container, and a relatively rigid conduit extending through and rigidly secured to one of said wall parts with its ends projecting beyond the opposite sides of said last mentioned wall part with one end projecting into the recess, the portion of said conduit which extends through one of said wall parts being inclined at an angle to the longitudinal axis of said container, a nipple provided on the end of the conduit projecting into the recess and extending substantially parallel to the other of said wall parts with said nipple disposed substantially wholly within the bounds of said recess, and the other end of said conduit projecting into and extending to adjacent the bottom of the container.

2. In a portable spraying apparatus, a fluid container having a substantially cylindrical side wall, a portion of said wall being reentrant to provide a recess opening laterally to the exterior of the container, said reentrant portion including two inwardly extending wall parts both inclined to the side wall and said wall parts extending in planes which are at substantially a right angle to each other, one of said wall parts having an aperture therethrough, a tube projecting through the aperture with its opposite ends extending beyond the opposite sides of the apertured Wall part, the portion of said tube which projects through said aperture being inclined at an angle to the longitudinal axis of said container, one end of the tube terminating in the recess and the other end extending into the container, and a hose connecting nipple on the end of the tube terminating in the recess providing an outlet from the interior to the exterior of said container, said nipple having its hose connecting terminal end disposed wholly within the bounds of said recess and its axis substantially perpen- *dicular to the apertured wall part.

LYNN L. FLETCHER.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 185,249 Marshall Dec. 12, 1876 453,165 Smith May 26, 1891 1,189,932 Garber July 4, 1916 1,395,753 Wehle Nov. 1, 1921 2,052,344 Edelmann Aug. 25, 1936 2,083,964 Schulz June 15, 1937 2,293,476' Snellings Aug. 18, 1942

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