US2211823A - Sprayer - Google Patents

Description

Patented Aug. 20,1940

UNITED STATES SPRAYER Ivar Jepson, Chicago, Ill., assigner toChicago Flexible Shaft Company, Chicago, Ill., a corporation of Illinois Application June 13, 1938, Serial No. 213,376

4 Claims.

ing the same, and for developing suitable Dressure within the sprayer. l

Another object of the invention is the provision of a device of the character described having improved means for preventing overllng of the container, and for sealing the opening through which iilling is accomplished.

I have also aimed to provide a novel arrangement and combination ofelements wherein the valve container functions as a handle in the combination, and having a novel functional cooperation between the pump handle and the closure member.

Other objects and advantages will become apparent from the 'following description and the accompanying drawing, in which- Figure 1 is a side view of a sprayer embodying my invention;

Fig. 2 is avertical section therethrough taken on the line 2-2 of Figure 1, and

Fig. 3 is a View on the line 3 3 of Figure 1.

The form of the invention herein shown is in-A tended primarily for hand use, in vthis instance the spraying of clothes for dampening prior to the ironing thereof, but is, of course, suitable for numerous other spraying operations of similar nature. Referring to the drawing, the present embodiment has a tank or container 4, in this instance, cylindrical in shape and tapering inward somewhat as shown at 5 to the neck of the container, which is axially disposed at the top thereof. 'Ihe lower end of the container is closed by means of a bottom 6 secured against the walls by a flange 1 vcrimped over the periphery 8 of the bottom member, and where necessary, soldered, brazed or welded into position to form a duid-tight joint. Secured in the neck of the end as shown at I3 to provide an annular flange or shoulder. The portion I2 has formed thereon screw threads, the threads in this instance being pressed into the metal, but itwill be ob- 'vious that these can be formed in any well known A'opening to the container through the tube 9,

which opening serves as a filling opening therefor. The cap has a bore I6 forming the sleeve I5 and a counterbore il forming an intermediate shoulder I8 upon which is positioned an an- 15 nular gasket I9 of suitable material, in this instance of rubber. The inner wall of the counter` bore I1 is threaded as shown at 2! for the reception of a pump cylinder 22, the end of the.I pump cylinder being threaded for engagement 20 at 2l. The cylinder projects out of the cap in concentric relationship with the sleeve portion I5 as appears from Fig. 2, and the gasket I9 is of such width as to be confined between the cylinder andthe sleeve portion I5. As a result of this 25 confinement, it will be observed that the gasket is prevented` from lateral distortion or creepage when the cap is screwed down so that the gasket presses against the ange I3 to seal the junction between the cap and the container. The cap also 30 has a second counterbore 23 axially positioned with respect to the bore IE and counterbore I1 for the reception of a stem -24 of anair pump presently to be described more fully. The upper end of the stem 24 is in this instance em- 35 bedded in a handle 25 of somewhat T-shaped structure having laterallydisposed arms 26 and 21, the handle serving to reciprocate the stem 24 within the tube 22. The upper surface of the cap I4 has two radially disposed and circum- 40 ferentially spaced lugs28 and 25 serving -as abut;

ments for similar lugs 3| and 32 disposed on the bottom surface of the handle 25. When the handle is in its lowermost position as shown in the from the lugs 28 and 29 so as to come into contact with the top of the cap intermediate the lugs 28 and 29. In this position of the parts, when the lhandle 25 is rotated, the lugs come into the position shown in Fig. 3, and continued rotation of the handle brings about rotation of the cap. 'I'his arrangement facilitates the tightening of the cap onto the container becausel of the greater leverage obtained in this way, and likewise fa- Y cilitates the removal-of the cap and permits the 55.

flange I3 to be pressed against the gasket I9 under a considerable sealing pressure with very little force on the handle 25. Contrariwise, very little force is required to break the seal.

VThe lower end of the cylinder 22 extends into the container and when the cap I4 is seated, extends to a point in relatively close proximity to the bottom of the container as shown in Fig. 2. The lower end of the tube has a transverse end piece 33 secured therein and provided with a central opening 34 for the passage of air from the interior of the cylinder out into the container. A screw 35 having a large head 36 passes through the opening 34 and carries a washer 31 having secured thereto a disk of gasket material 38 of such size as to cover the opening 34. The opposite end of the screw 35 has a nut 39 secured thereto and supports a spider 4I which bears against the inner side of the element 33, the spider having spring legs which normally urges the gasket into closed position over the opening 34 but permits opening of the valve thus formed when more than a minimum pressure is devel- I oped within the cylinder.

'I'he -lower end of the stem 24 has a nut 42 threaded thereon above which is a portion 43 upon which a piston 44 has sliding movement, the end 45 of the piston abutting against the nut 42 to limit its movement in one direction and against a disk 46 of gasket material positioned on a metallic backing member 41 secured in turn to the stem at 48, to limit its movement in the opposite direction. The piston 44 has a body portion49 provided with a central opening 5I through which the stem portion 43 passes, the opening' being such as to provide a, loose nt and to permit the passage of air therethrough when the piston is drawn upward under the action of the stem. The lower end of the piston has a slot 52 which permits movement of the air past the nut 42. A piston leather 53 or similar packing is secured to the upper side of the piston by a washer 54, seated against a hub 55 on the upper side of the body, the upper endof the hub being spun over as shown at 56 to secure thel washer and leather in place and to provide an annular shoulder for abutment against the gasket 46 to facilitate the sealing action between these parts. 'I'he piston body has an annular recess 51 within which is provided an expanding ring 58 adapted to exert outward pressure against the leather 53 and urge the skirt of the leather against the inner surface of the cylinder 22. It will be seen that as the vstem 24 is reciprocated by means ofthe handlev 25, the nut l42 comes againstther piston at the start of the upward movement` opening the space between the piston and the gasket 46. Continued movement of the stem moves the'piston upward to the top of the end of the stroke.

cylinder or until a spring 59 abuts against the inner surface of the cap I4 to cushion the upper During this movement air passes from the upperside of the piston downward `along the stem portion 43 through the slot 52 into the lower end of the cylinder, the valve at the lower end of the cylinder remaining closed. When the stem 24 starts downward, the stem moves with respect to the piston until the. packing 46 abuts against the piston, preventing the passage of air in an'upwardly direction. Upon continued downward movement of the pis- .ton air is compressed in the lower end of the cylinder and is forced out into the container through the passage 34 against the spring action or the spider u. lnl uns manner the pressure in extent.

the container may be built up to the required Normally the container will contain a substantial amount of Water or other liquid, as will presently be described, the liquid being introduced through the tube II.

A discharge valve, indicated generally`by the numeral 6I, is positioned on the side of the container adjacent the top thereof, as shown in the drawing, and includes a valve body 62 positioned in an opening 63 in the side of the container, the valve body being soldered, welded, brazed, or the like, or attached in any other manner to provide a iiuid-tight connection. In this instance, the metal of the container is formed inwardly adjacent the opening as shown at 64 for a purpose which will presently appear. The body 62 has a bore 65 and a counterbore 66 providing an intermediate shoulder 61 within which is positioned an annular. recess 68 forming a port with which communicates a pipe 69 carried in the body member and projecting to a point adjacent the bottom of the container, the pipe serving to supply liquid to the port 68. The bore 65 is internally threaded as shown at 1I for the reception of an externally threaded nut 12 which bears against a sleeve 13 positioned in the bore, the sleeve having a tab 14 projecting laterally outward for reception in a slot 15 in the threaded portion of the body member, the tab and slot serving to prevent rotation of the sleeve. The sleeve 13 and nut 12 have a bore 16 and a counterbore 11 for the reception of a nozzle member 18, the nozzle member having an annular flange 19 bearing in the bore 16 and a tubular portion bearing in the counterbore 11 to support and guide the nozzle member in longitudinal movement. A spring 8l is positioned in the bore 16 and acts against the ange 19 to urge the nozzle member inwardly, that is, toward the right facing Fig. 2. The nozzle member has a central bore 82 for the passage of liquid therethrough and is externally threaded as shown at 83 for the reception thereon of a nozzle tip 84, the nozend as shown at 89 to secure against the end of the nozzle member 18 a rubber or similar diaphragm 9|. This diaphragm is of substantially the same area as the'bore 65 and is secured at its periphery against the lshoulder 61 by means of the sleeve 13, the sleeve pressing thereagainst With considerable force and preventing movelment of the periphery of the diaphragm. A handle 92 has an opening 93 for loose reception on the outer surface of the body member 61. 'Ihe handle has a tab 94 for reception in the slot 15 to prevent rotation of the handle about the axis of the nozzle. 'I'he handle also has a projection 95 pressed therein for abutment against the shoulder 96 in the container formed by the recess 64 which serves as a fulcrurn about which the lever may be rotated by movement of the remote end 91 of the lever. The lever likewise has projections 98 formed adjacent the opening 93 for abutment against the ange 85 of the nozzle tip. It will be seen that when the end container the projections 9B pressing against the ilange 85 will urgethe nozzle tip and the nozzle member 18 tothe left facing Fig. 2, thereby establishing communication between the port '68 and the bore 82 by way of the bore 65 and the counterbore 66 in the body member so that the liquid may pass from the port 68 into the bore 82 and out through the nozzle tip. When the handle is released, the spring urges the nozzle member to the closed position shown in Fig. 2. The flange 19 has spaced slots 98 which ride along projections 99 formed in the sleeve 13 whereby to prevent rotation of the nozzle member with respect to the body. The annular flange 85 of the nozzle tip is knurled for convenience in removing the tip for cleaning of the nozzle. It will also be seen that the flange serves to cover the remainder of the valve and nozzle mechanism but to permit access to the 'entire mechanism upon its removal. y f

Attention is directed to the numerous advantages and structural features of the invention. It will beseen that the cap is constructed to carry the pump in such manner that the gasket I9 is confined for elective operation and that the' handle of the pump functions not only for reciprocation of the pump rod, but also functions in the removal oi the cap from the container. Likewise, the tube 9 serves not only asallling spout, but also forms with the side of thev container an air trap in the top of the container to prevent the sprayer from being completely filled and to provide a compressible quantity vof air within the container. Attention is also directed to the fact that the container is ',of such circumference as to be conveniently encircled by the hand of the operator to an extent suilicient for` ease in manipulation of the container, as a result of which the necessity for a handle is avoided together with the Various operating instrumentalities from the handle to the valve. This structure also permits of combining the nozzle and the valve in a unitary assembly since the valve is operated from the side of the container directly adjacent to the nozzle.

Another feature of the invention is the unitary Valve and nozzle structure whereby a portion of the valve is caused to function as a portion Yof the nozzle, .or vice versa, and the arrangement is such that a very simple and eiective means may be employed for actuating the valve.

.I claim:

1. The combination in a sprayer of a container for liquid having a top opening, a sleeve secured intermediate its ends in said opening to project upward from said container and downward into said container, the downwardly extending portion forming an air trap in the top of the container when the latter is lled with liquid through the sleeve, a closure for said container comprising a cap having a flange arranged to be received over the end of said upwardly extending portion, a pump cylinder within the flange in spaced relation thereto, the upper end lof the Asleeve extending inwardly into close relation with the cylinder, means for` drawing the lcap against the inwardly extendingend of the sleeveto seal the container, and 'a gasket between the iiange and the cylinder for'engagement with said upper end of the sleeve when the cap is drawn down whereby the flange and cylinder prevent lateral distortion of the gasket, and means in said,cylin der for injecting air into the container.

2. The combination in a sprayer of a container for liquid having a top opening, a sleeve secured intermediate its'ends in said opening to project upwardly from said container and downwardly into said container, the sleeve serving as a com.

the top of the container when the latter is lled with liquid, a closure f or said container comprising a cap having a ange threaded over the end of said upwardly `extending portion and tightened thereon by rotation of the cap, said cap having a cylindrical threaded portion and a central opening therethrough, a pump 'cylinder threaded into said threaded Aportion within the ange in spaced relation thereto, a gasket conned between the Iflange and the cylinder for engagement with the end of the tube when the cap is tightened thereon, a pump piston in said cylinder for injecting air into the container, the piston having a reciprocable rod extending loosely through said cap opening, a handle positioned on the rod for reciprocating the same, and means on the cap and on thehandle engageable in one position of the handle for rotating the cap'in response to rotatior of the handle to tighten and loosen the cap. 3. The combination in a sprayer of a slender body, Va relatively small upstanding neck at the upper end of the body,A the body tapering inwardly at lits upper end tov said neck, a one-piece cap covering said neck and having arib at its upper end,Y a threaded bore for reception of the neck, a threaded counterbore, and a shoulder be,\

tween. the bore and the counterbore, a pump cylinder threaded into the counterbore and depend-y A ing from the capinto the body, a gasket seated against said shoulder and coni-ined between the bore and the cylinder to seal the neck, the neck being inturned substantially to the cylinder to provide a atsurface for contact with the gasket, a plunger rod extending through the center of the cap, and a handle on the outer end of the plunger havingl a rib for engaging the rib of the-V ment means providing a fulcrum for the rotation of the lever to openthe valve when thc- Vlever i's squeezed toward the body. y p t IVAR JEPSON.

Images