US2045893A - Liquid sprayer - Google Patents

Description

June-30, 1936. v R M, BAGLEY 2,045,893 I LIQUID SPRAYER Filed Jan. 4, 1954 Zhwentor EaazerM 5/461. EY

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struction in the orifice.

Patented June 30, 1936 A as S ATES creme. UIZ: 35121319133 r, I

Robert M. Bagley, Haddonfield, N. J assignor to RiMYHoIling'shead Corporation, Camden, N. J., a corporation-of New Jersey Application January 4, 1934, Serial 705,271

is Claims. (01. 299-39 o,

My invention relates to certain novel improvements in liquid Sprayers, and it relates more particularly to manually operated liquid sprayers adapted "to be attached to and to be use'dinconjunction with original containers of liquids to be sprayed. r M I One of the objects of my invention is to provide a liquid sprayer which will produce a generally continuous spray notwithstanding the intermittent operation of the air pump. A further object of my present invention is to. provide a spray which will function efficiently, which will be inexpensive to produce, and which will be dependable in all positions and under all conditions of operation.

With the above and other objects in View, my invention consists of certain novel features of construction, which will appear more fully from the following detailed description and the accompanying drawing.

For the purpose of illustrating my invention, I have shown in the accompanyingdrawing one form thereof which is at present preferred by me, since the same has been found in practice to give satisfactory and reliable results, although it is to be understood that the various instrumentalities of which my invention'consists can be variously arrangedr and organized and that the invention is not limited to the precise arrangement and organization of the instrumentalities as herein shown and described.

Referring to the drawing in which like refer- Figure 1 represents a generally longitudinal sectional view of the'sprayer embodying my invention.- Y

Figure 2 represents amodified form ofconstruction embodying my invention. I Figure 3 shows a modified form of construction Figure 4 shows a further modified form of con- The liquid sprayer of my present invention includes a generally cylindrical member 5 which serves as a pump cylinder. i-lntothe-front end of the cylinder memberi a generally cylindrical air chamber 6 is:telescoped;--the outer diameter of the chamber fibeing; approximately the same as the inner diameterof the cylinder-"5f The chamber. 6 may be formed of a single sheet of metal by drawing in a dye, therebygiving'it an end wall 1, and also'forming a suitable flange 8 around its open end; which=then f0rmspartof an interlocking seam with the 'end of the cylindrical' seal 5, and with a flange of a cap member Oll nozzle member 9;

' The c'apmember or nozzle member 9 is preferably provided with an outwardly converging more 01' less conical .wall It, terminating in a slight tip l I, having asuitable aperture l2 therethrough;

A retainer plate It extends across the cap "member 9 and is held in place by the seam Id.

The seam it is formed in the conventional manner; by any suitable capping machine, as for instance, those used in can-making. The liquidcQ'nducting tube It is extended through a suitable opening l 6 in the retainer plate it, with the end of the tube projecting into the recessed tip I ljof the cap 9. The tube l5-is soldered in place to the'plate l3, bysolder l1 and I8.

"A screw-cap i9 is fastened to one side of the fcylind'er 5, near the front end thereof, as for instance, by soldering at 29, and an aperture 2| ,is' providedthrough the'wall of the chamber 6, through the wall of the cylinder 5, and through the top 22 of the screw-cap '59, so that free com- The tube 55 extends through the opening 2| "down into the liquid container 23, and may be 'bent slightly so as to extend towards the side wall of the'ca'n'near the bottom thereof.

The can 23 may be any standard or conventional screw-top can serving as an original container for the liquidto be sprayed.

A check valve housing 24 is provided in the terminal wall 7 of the air chamber 6, as indicated particularly in Figures 1 and 2; this check valve housing including an annular valve seat 25;- and'a Valve cage 26 within which a ball check valve 27 is loosely mounted. The inner end of the' c'ageZS is provided with perforations 28,

through whichair may enter into the chamber 6. The piston 29, carried on the inner end of the piston 'rod 3fl may be any suitable piston, as for instance, composed of the metallic follower plate 3t of a cup-shaped leather or similar washer 32,

and the, resilient sheet metal (phosphor-bronze or brass) retainer and expander member 33, having'the serrated flange 34 adapted to bear outwardlyagai nst the flange of the cup-shaped washer-32, thereby to press it into contact with the inner surface of the cylinder 5. The piston rod 36 extends through an opening 35 of any'suitable cylinder head 36, which may be formed of wood or similar material, and held in place by one or more set screws 31. The piston rod 30 is pro- 5 vided with a handle 38, and a' stop washer 39, held in place by the swedged projections 40 formed of the rod 30. A helical compression spring 4| may also be provided on the rod 30 to take up theshock of any sudden withdrawal of the piston rod;

10 that is, to prevent the piston 29 abutting against the cylinder head 36. The opening 35 in the cylinder head may be sufficiently larger than the piston rod 38, to permit the intake of 'air, although if desired, an opening 42 may be provided 15 in the cylinder wall, ahead of the piston in.its..retracted position through which the air may also be taken in.

In the embodiment of the invention shown in Figures 1, 3 and 4, an opening 43 is also provided.

20 in the plate l3, for maintaining permanent air communication between the interior of the conical portion l8 of the cap member 9, and. the int'erior of the chamber 6.

The discharge end of the tube I5 is provided 25 with an opening (in addition to its, end opening) which is in communication with the interior of the air chamber 5. In the embodiment of the invention shown in Figure 1 and Figure 2, this opening is in the form of a slot 44 cut into the $9 tube from its end, and of'a length greater than the depth of the recess of the tip I I. In the embodiment of the invention shown in Figure 3,

this opening is in the form of afsmallround side opening 45, which may be drilled into the side wall of the tube at one point, while in. the embodiment of the invention shown in Figure 4, this opening is formed by grinding or filing the end of the tube to form two flats 46, converging towards the end, and extending sufiiciently far back 40 fromthe end of the tube, as to exposethe interior of the tube on the two sides beyond the depth of the recess of the tip II.

This opening (44, 45, or 46) establishes communication between the interior of the air cham- 45 her 6, and the discharge opening l2 of the sprayer. Thus, the air pumped into the chamber 6- (and also into-the vacant portion of the container 23') exerts a pressure on the surface of the liquid witha in the container 23, 'and also dischargesa jet ot 50 air through the opening I2. The air discharging through, the opening I2 meets the liquid forced up through the tube l5 by the static pres sure of the air, and the liquidis entrained in. the air stream and is carried outin the form of a 55 fine spray.

This spray tends to be more or lesscontinuous, notwithstanding the reciprocating motlonsof the piston. Thus, the; check valvelflgentraps the air within the chamber 6, (and within any vacant portion of the container 23) and the air may be stored at sufficient pressure to give continuity-to the p ay.

The sealing gasket or washer 4] of any suitable sealing material (cork, rubber, fiber, or the like) seals the cylinder 5 intogthe container 28,,thereby establishing acompletely. enclosed air chamber, 1

Intheformsof construction shown in Figures 1,;3and4, the tube I5is permanently fixedand 7 immovabl with respect to the cylinder 5, ,while in,;the1 embodiment of the invention shown, in.

Figure 2, the tube 48 is preferably formed with a resilient loop 49 (the tube being of brass, bronze,

or other more or less resilient material), and is also provided with a locking notch or double bend 5B, which is adapted to engage the edge of the 5 opening 2| so as detachably to retain the tube 48 in position. Thus, the tube is supported between the recess of the tip H and the edge of the. opening. 2i. When it "is desiredv to remove the tube 48, the lower end of the tube is bent 10 until the notch 50 is loosened, and the end of the tube may then be removed from the recess of the tip H and completely removed from the'air chamber;.

The. invention may be embodied in other specificforms withoutv departing from the spirit or essential, attributes thereof, and I therefore desire the present embodiments to be considered in all respects as illustrative and not restrictive, reference being had to the appended claims rather thanltothe foregoing description toindicate the scope of the invention.

"'Having thus described. my invention, what I hereby-claim: as new and desireto secure by LettersPatent, is:

1 Aliquid sprayer including a liquid reservoir, an air, chamberin communication with said liquid lie ryoir, a uick-detachabIe and sealed connectiolfr between said air chamber and said liquid reservoir, a. generally conical nozzle forming a front term'malof said air v chamber and having a spray-discharge. opening therein, a liquid-conducting tube extending from said spray-discharge opening in the air chamber, into the liquid reser- .v.oir. inproximity to the bottom thereof, an opening'inthaside ofsaid tube near the discharge end thereof, a; pump cylinder surrounding said air chamber and extending beyond the same, a pump piston operatively disposed within said pump cylindenandacheck valve intermediate the pump 0 cylinder: andisaid airchamber; said air chamber, said; nozzle and said. cylinder being secured to each other by a common, annular, interfolded and interlocking seam.

2. A liquidsprayer including apump-cylinder, an air chamber disposed. within the front end of said cylinder, acheck valve intermediate said air chamber and said pump-cylinder, and opening in thedirection of the air chamber, a spray-discharge opening in the front end of said air chamher, a liquidreservoir'detachably connected with said air chamber in; communicating relation therewith when connected, and with the connection therebetween sealed with respect to the ex--, terior, aliquid-conducting tube extending from said spray-dischargeopening into the liquid reservoir; and' a pump-pistonioperativelydisposed within said pumpcylinder; said pump-cylinder and said' air-ch'ainbe'rbeing secured to each other by means of an outer, terminal, annular inter- 6O folded and: interlocking seam.

3. A, liquid sprayer including a pump cylinder, an airchamber telescoped into the front-end of said pump-cylinder and having an. outer end. wall; a spray-discharge opening in said outer end wall, a checkyalve intermediate the inner wallv of" saidair chamber and. said pump-cylinder, opening in the direction of theairchamber, a liquid. reservoir, a, quick-detachable; coupling in- ,termediatesaid air chamber and said liquid reservoir Ion forming mechanical. connection betweenthetwo and. for establishinga. sealed airpassagewaybetween t etwda liqui -conduc ime xtending-Item l nraywd s a e; 1 ing through said air-passageway into said liquid reservoir, and a pump-piston operatively disposed within said pump-cylinder; said pump-cylinder and said air chamber being secured to each other by means of an outer, terminal, annular interfolded and interlocking seam.

4. A liquid sprayer including a liquid reservoir, an air chamber in communication with said liquid reservoir, a quick-detachable and sealed connection between said air chamber and said liquid reservoir, a spray-discharge opening in said air chamber, a liquid-conducting tube extending from said spray-discharge opening in the air chamber, into the liquid reservoir, in proximity to the bottom thereof, a pump-cylinder operatively connected with said air chamber, a pumppiston operatively disposed within said pump cylinder, and a check valve intermediate the pump-cylinder and said air chamber; said air chamber and said pump-cylinder being secured to each other by an annular, interfolded and interlocking seam at the front end of each.

5. A liquid sprayer including a pump-cylinder, an air chamber connected with said pump-cylinder through an annular seam formed of interlocking folded peripheral flanges on the two connected members respectively, a liquid reservoir, a quick-detachable coupling member intermediate saidair chamber and said liquid reservoir and having an air passageway therethrough connecting said air chamber and said liquid reservoir, a spray-discharge opening in the front end of said air chamber, a liquid-conducting tube extending from said spray-discharge opening in the air chamber through said air-passageway into said liquid reservoir; said spray-discharge opening being in direct communication with said air chamber, a pump-piston operatively disposed within said pump-cylinder, and a check valve intermediate said pump-cylinder and said airchamber, opening towards the latter.

6. A liquid sprayer including a pump-cylinder an air chamber communicable therewith; said air chamber having a front terminal wall including a spray-discharge opening therethrough, a tube retainer member within said air chamber, a check valve intermediate said air chamber and said pump-cylinder, opening in the direction of the former, a liquid reservoir in communicating relationship with said air chamber,

' a quick-detachable coupling intermediate said air chamber and said liquid reservoir, a liquidconducting tube" extending from said spray-discharge opening through said retainer member, through said quick-detachable coupler into said liquid reservoir, and being fixedly secured to said retainer member, and a pump-piston operatively disposed within said pump-cylinder; said spraydischarge opening being at all times in direct communication with said air chamber; said pump-cylinder and said air chamber being secured to each other in sealed relation to each other, by means of an interfolded and interlocking annular seam surrounding their front ends.

7. A liquid sprayer including a cylinder, one portion of which is a pump chamber, a cylindrical member having an apertured end wall thereon and embraced by the forward end of said cylinder, said end wall forming the rear end of an air chamber and the front wall of said pump chamber and having a check valve thereon for preventing flow of air through its aperture from the air chamber back to the pump chamber, an apertured cap member fixed to the forward ends of said cylinder and said cylindrical member to act as the forward wall of said air chamber, a fastening cap secured to the exterior of said cylinder, said fastening cap, cylinder and cylindrical member having registering apertures therethrough within the area of the cylinder contacted by said fastening cap, a receptacle for liquid to be sprayed detachably secured to said fastening cap, a tube for conducting liquid to be sprayed from said receptacle to the aperture in said cap member and means for sealing the joint between said cylinder and said cylindrical member at the edges of said registering apertures therethrough.

8. A liquid sprayer as set forth in claim '7, and in which the cylinder, the cylindrical air member and the cap member are secured to each other in sealed relation to each other by means of an interfolded and interlocking annular seam surrounding their front ends.

ROBERT M. BAGLEY.

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