US2866993A - Magnetic fountain applicator - Google Patents

Description

Jan. 6, 1959 S. E. EDELSTONE A MAGNETIC FOUNTAIN APPLICATOR Filed Nov. 18, 1954 opening up a leakage path.

MAGNETIC FOUNTAIN APPLICATOR Sigmund E. Edelsteine, Clxicago,.lll.,.V assignor to Dupli- Color Products Company, Inc., Chicago, ill., a corporation of Illinois Application November 18, 1954, Serial No. 469,639

Claims. (Cl. 15-1'39) This invention relates. to a fountain applicator or fountainbrush with a magnetically controlled retractable applicator. Specifically, this invention deals with a fountain applicator wherein a valved applicator is moved into and out of a dispensing nozzle by a nozzle-carried shiftable magnet.

According to this invention, a huid-containing reservoir or container is equipped with a dispensing nozzle that carries a shiftable applicator unit. This unit is retracted when the nozzle is capped so that the applicator will be submerged in the contents of the container and thereby sealed in the container where it cannot dry out and become hardened. Since the applicator may be in the form of a relatively delicate brush, the retraction of the applicator unit without damaging the same and without creation of a leakage path for the contents of the container, presents a serious problem. This problem is solved, in accordance with this invention, by magnet means cooperatively `carried by the nozzle and shiftable applicator. For most positive action, it is preferred to mount powerful Alnico type magnets in both the nozzle and appli- 2 cator unit in such a manner that a shifting of the nozzlecarried magnet will cause a corresponding shifting of the applicator-carried magnet to selectively propel and repel the applicator.

It should be understood, however, that in installations L where the applicator shifting drag or load is not too great, one of the magnets in the various arrangements of this invention could be replaced with a paramagnetic material in the magnetic eld of the magnet.

The nozzle and applicator unit, of course, are composed of non-magnetic materials and since the shiftable nozzlecarried magnetic piece will maintain the applicator-carried magnetic piece within its field, movement of the applicator can be induced from the outside of the nozzle without In this manner, positive propel and repel action of the applicator unit relative to the nozzle can be eected without touching the applicator.

The applicator unit is preferably equipped. with a modulating valve that coacts with a seat in the nozzle so as to regulate dispensing of uid from the nozzle. A feature of the invention resides in a resilient closing of this valve when the applicator is propelled beyond the nozzle for active use. The urging of the valve into closed position, however, is accomplished by the magnetic field between the two magnetic pieces and a resilient force is thereby developed which will accommodate modulation of the valve by end pressure on the applicator so as to unseat the valve even when the applicator is projected beyond the nozzle to thereby permit controlled feeding of Huid to the applicator.

It is then an object of this invention to provide a fountain applicator with a magnetically controlled. applicator unit adapted to be selectively propelled and repelled.

A further object of this invention is to provide a fountain brush with a shiftable magnet control means which .regulates the position of the brush.

A still further object of this invention is to provide a 2,366,993 Fatented dan. 6 195,9

fountain brush with a modulating dispensing valve wherein the positions of the valve and the brush are controlled by a manually shiftedmagnetic member out of contact with the brush and valve.

Aspecic object of this invention is to provide a fountain brush with a non-magnetic dispensing nozzle housing a non-magnetic brush and valve unit wherein the nozzle carries a manually shiftable magnetic control member. to induce movement of the valve and brush unit in the nozzle under the inuence of a magnetic iield exerted through the nozzle without placing the magnetic control member in communication with the interior of the nozzle;

Other and further objects of this invention will be apparent to those skilled in the art from the following detailed description of the annexed sheets of drawings which, lby way of preferred examples, illustrate several embodiments of the invention.

On the drawings:

Figure l is a side elevational view of an applicator of this invention in closed condition.

Figure 2 is an enlarged fragmentary longitudinal crosssectional View of the applicator of Figure l taken along the line II-II of Figure 1.

Figure 3 is a view similar to Figure 2 but showing the applicator in its opened condition.

Figure 4 is a view similar to Figure 3 illustrating the manner in which end pressure on the brush will modulate the valve to control flow to the brush.

Figure 5 is a transverse cross-sectional view taken along the line V-V of Figure 4 with a part omitted.

Figure 6 is a transverse cross-sectional View taken along the line VI--VI of Figure 4.

Figure 7 is a fragmentary longitudinal cross-sectional view of fountainbrush according to this invention and illustrating the applicatorin closed condition.

Figure 8 is a transverse cross-sectional view the line VllI-VIIlof Figure 7.

As shown on the drawings:

The applicator or fountain brushltl of Figures 1 to 6, is composed of an elongated tubular barrel 11, a nozzle 12 projecting from the open end of the barrel 11, a closure cap 13 on the nozzle, avalve and brush unit 14 slidably mounted in the nozzle 12, a tirst magnet 15 slidably mounted in a longitudinalgroove on the outside of the nozzle, and a second magnet 16 carried by the unit 14 in the eld of the magnet 15.' A plug 17 is mounted on the end of the nozzle 12 for a wedge fit sealing engagement in the mouth of the barrel 11. A centrally apertured washer or plug 18 is freely slidable in the barrel 11 and freely receives the stem of the unit 14 therethrough. The washer or plug 18 serves as an agitator to mix the contents of the barrel. A sealing insert 19 is embedded in the head of the cap 13 to seal the dispensing orifice of the nozzle 12.

The barrel 11 can be composed of any non-magnetic material including aluminum, zinc, synthetic plastic material, glass, rubber, or the like. It has a closed end 11a and an open end 11b. As illustrated, the barrel is cylindrical and rather long in comparison with its diameter but it should be understood that the' barrel can be any desired shape and can include a bottle typek reservoirforming unit. In Figure 3 liquid is shown in the barrel 11 but is omitted from the nozzle interior for purposes of clarity. Obviously the liquid would drain into the nozzle in the illustrated upright position.

The nozzle 12 is composed of any non-magnetic material, preferably a molded relatively hard plastic material such as Bakelite, hard rubber, or the like. It has a cylindrical bore 12a extending axially therethrough to a converging valve seat portion 12b adjacent the dispensing circular orice 12e` thereof. A reduced diameter neck portion 12d on t'ne end thereof remote from the orice taken along 12e receives the guide plug-17 in tight pressed t relation thereon. This plug is slightly tapered at 17a to wedge fit inside of the open end 11b of the barrel 11. The plug aperture is stepped to provide a small diameter bore 17b snugly receiving the shaft 14a of the applicator unit 14 therethrough and providing a shoulder 17C forming an abutment stop for a flange or collar 14b on this stem. As shown in Figure 5, however, the bore 17h of the plug has ports 17d therearound providing passages joining the interior of the barrel 11 with the bore 12a of the nozzle for free flow of fluid.

The nozzle 12 has an externally threaded portion 12e for mating with a threaded portion 13a on the inside of the side wall of the cap 13. The cap has an unthreaded depending skirt portion 13b with a larger internal diameter than the threaded portion 13a for slidably engaging the circular periphery of the nozzle 12. The end head 13e` 0f the cap is sui'lciently thick to embed the sealing plug 19.

The cap 13 is preferably composed of the same plastic material as the nozzle 12 while the sealing plug 19 carried by the cap is preferably composed of a softer somewhat yieldable plastic material such as nylon or the like.

The nozzle 12 has a longitudinal groove 12f in the outer face thereof. This groove has a fragmental circular cross-section as shown in Figure 6 to provide a conguraton which will slidably retain the magnet which, as shown, is in the Shape of a cylindrical rod. The magnet 15 has its major portion encased in the groove 12jc but a portion 15a of the magnet projects beyond the groove so as to be easily accessible for manual shifting of the magnet in the groove. This projecting portion 15a provides an end abutment 15b engageable by the skirt 13b of the cap when the magnet is in the end of the groove 12j closest to the dispensing orifice 12e. The skirt is thereupon utilized to shift the magnet to the other end of its groove. As shown, the groove is about twice as long as the magnet.

The stern 14a of the valve and brush unit 14 is of smaller diameter than the bore 12a of the nozzle to provide a free flow passageway through the nozzle around the stern. As shown, the stem has a well or closed bottom bore 14e extending from the top end thereof to accommodate the magnet 16 which is press fit in the bottom of the well. The magnet 16, like the magnet 15, is in the form of a solid cylindrical rod but has its polarity reversed relative to the magnet 15. Thus, as indicated in the drawings, the north pole of the magnet 15 is at the upper end of the magnet while the south pole of the magnet 16 is at the upper end of the magnet 16. The north and south poles of the respective magnets, are thereby aligned with each other and it is the purpose of the invention to maintain this alignment even when the magnet 15 is shifted in its slot 12j.

The stem 14a of the unit 14 has a tapered valve head 14d at the end thereof adjacent the dispensing orifice 12C and this head 14d is adapted to cooperate with the seat 12b to close the passageway 12a when the brush B is in its fully extended position as shown in Figure 3. As therein shown, brush bristles are carried by a ferrule or hollow cup portion 14e of the unit 14 and project beyond the dispensing orifice 12e when the head 14d is seated on the valve seat 12b. In order to centrally guide the stem 14a in the bore 12a of the nozzle, integral lugs or ears 14jc are provided at spaced intervals around the small end of the valve portion 14d on the stem. These ears have sliding engagement with the bore 12a. The stern 14a is thus guided centrally of the bore 12a by the ears 14j and by the bore 17b of the plug 17. These guides hold the stern in the axial central portion of the bore to accommodate free ow of the contents of the barrel 11 through the nozzle around the stem.

As illustrated in Figure 2, when the cap 13 is mounted on the nozzle 12, the skirt of the cap automatically engages the abutment 15b of the magnet 15 in the event that the magnet is shifted to the position for expelling the brush as shown in Figure 3. Application of the cap into its sealed relation with the nozzle Orifice will shift the magnet 15 back to the end of the slot 12f adjacent the barrel 11. This shifting of the magnet will cause a corresponding shifting of the magnet 16 thereby retracting or sheathing the brush unit 14 into the nozzle. The alignment of the magnets is such that the cap will effect movement ot' the magnet 15 and corresponding retracting of the unit 14 in advance of the end head 13e of the cap. In this manner, the bristles of the brush are not crushed by the cap.

When the cap is removed, as illustrated in Figure 3, the magnet 15 can be manually shifted to the end of the groove 12jc adjacent the nozzle orice. This shifting of the magnet 15 will move the magnet 16 therewith to cause a propelling of the unit 14 with the valve 14d seated on the nozzle wall 12b and with the brush projected beyond the nozzle orifice 12e.

As demonstrated in Figure 4, when the brush B is pressed down on the surface of an object O, the stiffness of the bristles will be sufficient to unseat the valve 14d and allow flow of Huid from the barrel 11 through the passageway 12a to the bristles. In this arrangement, it will be noted that the magnets 15 and 16 are somewhat misaligned. The magnetic field between the magnets, however, urges the magnets toward alignment and the repelling of the brush by application of end pressure is, therefore, met with a resilient resistance in the nature of a spring action. Thus, as soon as the brush is lifted from the surface S, the magnet 16 will be pulled down into alignment with the magnet 15 and the valve 14d will again be closed. A highly desirably modulating valve control is thereby produced.

When the magnet 15 is retracted back to the end of the groove 12)c as shown in Figure 2, and the magnet 16 is retracted to completely sheath the unit 14, the stop 14b on the stem 14a will engage the shoulder 17e` of the plug thereby limiting further retraction. The unit 14 has limited movement in the bore 12a controlled in the repelling direction by the stop 1411 and in the propelling direction by seating of the valve 14d.

It will be noted from Figures 2 to 4 that the plug 17 closes the open end of the groove 121 so that the groove can have a magnet-retaining configuration and the magnet can be slipped into the groove through the open end thereof before the plug 17 is mounted on the nozzle.

In the embodiment 20 shown in Figures 7 and 8, the magnet groove in the nozzle does not have a magnetretaining configuration and the groove can, therefore, have closed ends eliminating the requirement for a separate plug such as 17.

As shown in Figure 7, the applicator 20 has an elongated cylindrical barrel 21 similar to the barrel 11 of the applicator 10, a plastic nozzle piece 22, a plastic cap 23, a valve and brush unit 24, a manually shiftable magnet 25 slidably carried in an external groove of the nozzle 22 and a corresponding magnet 26 is carried by the unit 24.

The nozzle 22 has a cylindrical bore 22a axially 'therethrough with a converging valve seat forming portion, not shown, at the discharge end thereof and a counterbore 22C at the opposite end thereof extending inwardly to a radial shoulder 22d. A guide washer 27 is press iit in the counterbore 22p` on the shoulder 22d and has lug portions 27a around its inner periphery guiding the stem 24a of the unit 24 tocooperate with lug portions 24h at the other end of the stem adjacent the valve 2,40 of the unit 24 for holding the stem in the central portion of the bore 22a.

The barrel 21 is pressed ontoV the nozzle 22 for sutiicient distance to form a sealed joint. lt will be noted that the external longitudinal groove 22e of the nozzle hasclosed ends but as shown in Figure 8, has a configura-- tion such that the magnet 25 can be radially inserted or removed from the groove. in other words, the mouth of the groove is not any narrower than the base and in the form shown, the groove is rectangular in cross-section with a rounded or outwardly flared mouth.

The closure cap 23 terminates at an internally threaded portion 23a thereof which engages mating threads on the nozzle. No skirt projects beyond the threaded portion 23a and, therefore, the cap is shorter than the cap 13. Further, it has no function in shifting the magnet 25.

As shown in Figures 7 and 8, the magnet 25 is retained inthe groove by a snap-on retainer Ztwhich has springlike side walls 2da embracing the cylindrical nozzle 22 and end walls or tabs 28h overlying the ends of the magnet 25. A corrugated linger grip portion 28e overlies the magnet 25.

The bottom of the groove 22e is preferably notched or serrated at 22j to cooperate with notches or serrations 25a on the magnet. The retainer 28 tends tourge the magnet against the bottom of the groove with the serrations in mated relation so that the magnet will not move in the groove unless it is deliberately manually shifted.

In operation of the applicator 20, the shifting of the magnet 25 forces the magnet 26 to follow in alignment therewith and the unit 24 is propelled and repelled in the same manner as described above in connectionl with the applicator 2li). The cap 23, however, has no function in shifting the magnet 25 and in order to repel the unit 24, it is necessary to manually retract the retainer 28. This retainer could be made of magnetizable material if desired since it shifts with the magnet 25 and will always be maintained in alignment with the magnet 26.

From the above descriptions it will, therefore, be understood that this invention provides fountain applicators wherein the applicator unit is propelled and repelled between fully sheathed and fully projected positions by the shifting of a magnetic control member carried by an external part of the applicator.

It will be appreciated that many variations of the specific herein illustrated embodiments can be made without departing from the principles of this invention and it is not the purpose of this application to limit the invention beyond the definitions of the invention as expressed in the hereinafter appended claims.

i claim as my invention:

l. A fountain applicator which comprises a tubular reservoir for fluid, a dispensing substantially cylindrical nozzle secured to the mouth of said reservoir and having an axial groove along the outer peripheral wall thereof, a stemmed brush slidably mounted in the nozzle, and coacting magnetic control means respectively carried by the stem of the brush and the groove in the nozzle to control positions of the brush relative to the nozzle, a magnetic control means retainer having spring-like side Walls slidably embracing the substantially cylindrical nozzle in overlying the magnetic control means to retain it in sliding contact within said groove, saidgroove-carried control means being shiftable in the groove of the nozzle by manually shifting said magnetic control retainer means.

2. A fountain applicator which comprises an elongated tubular barrel closed at one end, a non-magnetic plastic material substantially cylindrical nozzle secured in the open end of the barrel and projecting therefrom to provide a dispensing orifice for the contents of the barrel, a valve and brush unit slidably carried by the nozzle and having brush bristles adapted to be selectively sheathed Within or projected beyond the nozzle, said nozzle having a tapered valve seat coacting with the valve o-f the valve and brush unit to regulate tlow of fluid from the nozzle to the brush bristles when said brush bristles are projected beyond the nozzle, an elongated guiding groove axially aligned in the peripheral Wall of said nozzle enclosed at its ends, a first magnet shiftably carried in said guiding groove on the exterior of the nozzle, a magnet retainer having spring-like end wallsi slidably. embracing the substantially cylindrical nozzle and overlying the magnet to retainit in sliding contact in said groove, aisecond magnet carried by the valveand brush unit within the nozzle, said first andsecond magnets being aligned to create magnetic fields which will maintainthemagnets in alignment whereby shiftingofSaidmagnetretainer and the nozzlecarried'magnet will induce. corresponding shifting of the second magnet to selectively sheath theV brush bristles Within the nozzle and project` the brush bristles beyond the nozzle.

3. A; fountain applicator which comprises means providing aY reservoirfor fluid'to be dispensed, said'reservoir closedv at oneendsand open at the oppositeend, a substantially cylindrical nozzle` for dispensingsaid fluid secured in the open` end off said'reservoir, saidnozzle having a valve seat adjacent'l the dischargeforice thereof, a valve and brush unit'slidably carried' by said nozzle, thebrush unit embodying brush bristles adapted to beA selectively sheathed within the nozzleior projected beyondthe nozzle, an elongatedguiding groove axially aligned 'in the, periph-l eral wall of said` nozzle, amagnetl shiftably carried by said groove, said valve seat coactingwith the valverto regulate ow of-iiuid fromtheV nozzle, amagnetfcarried by saidvalve and brush unit, saidfcoacting magnets respectively-carried by the valve andk brush unit andthe nozzle. being,` aligned: to create magneticy elds which: will maintain-themagnets in alignment to kcontrol the position of the valveandzbrush. unit relative totheinozzle, and a magnet retainer havingspring-like sidewalls slidably embracingthe outer wall of-V said nozzle-and. overlying the. magnet in said groovetoretain .it inY sliding contactwith said groove, saidmagnetic meanscarried .by thenozzle beingshiftable in said elongated. guidingV groove onrthe nozzle betweenpositionswhich. will effect retraction of the valve and brush unitV in the` nozzlev to Ycompletely sheath the` brush `unit and toproject the. brush. bristles of the brush unit beyond the orifice of the nozzle.

4. A fountain. brush whichk comprises meansproviding a-reservoir for liquid to be dispensed,- said reservoir closed at one end and. open atk the opposite end, a. substantially cylindrical nozzle for dispensing saidliquid. secured inrthe open end of said reservoinsaid nozzle on said. reservoir having a dispensingoriiice, said nozzle having a valve seat adjacent said orifice, a stemmed brush having the stem thereof slidably mounted in the nozzle and the brush bristles thereof selectively movable into7 and out ofthe nozzle, a first magnet carried by` the stem of the brush, a valve carried by said stem adjacent said brush, a second magnet shiftably carried by anrelongated groove axially aligned in the outer wall of the nozzle, the magnets aligned to create magnetic fields which will maintainthem in alignment, said groove being of substantially rectangular cross-section and closed at one end, a magnet retainer havingspring-like side walls slidably embracing the outer wall of said nozzle, and overlying said second magnet, said second magnet and retainer adapted to be manually shifted to induce movement of the first magnet and thereby control the position of the valve and the brush.

5. A fountain applicator which comprises means providing a fluid receptacle closed at one end, a dispensing nozzle secured in the open end of saidV receptacle, said nozzle having a valve seat adjacent the'discharge orifice thereof, a stemmed valve and brush unit slidably mounted in said nozzle, said stemmed valve and brush unit having a valve secured upon its stem and intermediate its ends, said nozzle having an elongated axial groove in an outer wall thereof, a magnet slidable in said groove, a magnet retainer embracing'the nozzle and overlying the magnet to Ihold the magnet in the groove, and cooperating magnetic means on the stem of the valve and brush unit in the nozzle adapted to follow the magnet in thenozzle groove whereupon manual shifting of the retainer and the nozzle groove-carried magnet will control the position 7 of the valve and brush unit in the nozzle and said valve with respect to said valve seat.

6. In a fountain brush having a dispensing nozzle carrying a valve and brush unit, said nozzle having a valve seat adjacent the discharge orice thereof, said valve and brush unit adapted to be sheathed Within the nozzle or have the brush bristles thereof project beyond the nozzle, the improvement of a shiftable magnet carried by an elongated guiding groove in the outer Wall of the nozzle, a magnet retainer slidably embracing said nozzle and overlying said magnet in said groove, magnet actuated means on said valve and brush unit in the path of the magnetic eld of said magnet to align said means with the magnet, said retainer accessible from the outside of the nozzle to effect shifting of the magnet in said groove and effect shifting of said means and the valve and brush unit within the nozzle to sheath the brush bristles or project the brush bristles as desired and control said valve with respect to said valve seat.

7. A fountain applicator which comprises a tubular barrel closed at one end, a substantially cylindrical nozzle secured to the other end of the barrel and projecting therefrom, said nozzle having a valve seat adjacent the discharge orifice thereof, a valve and brush unit slidably mounted in the nozzle, the valve of said unit coacting with said valve seat to regulate ow from the nozzle, brush bristles on the brush of the valve and brush unit in advance of the valve adapted to project beyond the discharge end of the nozzle, an elongated guiding groove in the peripheral wall of the nozzle, said groove of substantially rectangular cross-section and closed at its ends, the bottom surface of the groove being notched, a manually shiftable magnet slidably carried in said groove and having a notched surface to mate with the notched surface of said groove, a magnet retainer having spring-like side Walls embracing the substantially cylindrical nozzle overlying the magnet to retain said magnet in sliding contact in said groove, said retainer having end tabs overlying the ends of the magnet, a cooperating magnet supported and carried by a stem on the rear end of said valve and brush unit and intermediate the ends of said stern, said valve and brush unit and magnet within said nozzle adapted to follow said magnet in the elongated guiding groove in response to shifting of the magnet rctainer and the magnet controls the position of the valve and brush unit thereby governing both the reciprocable movement of the valve to and from the nozzle valve seat and the reciprocable movement of the brush bristles of said brush unit within and without said nozzle.

8. A fountain applicator comprising a tubular barrel closed at one end, a substantially cylindrical nozzle secured to the other end of the barrel and projecting there from, said nozzle having a valve seat adjacent the discharge orifice thereof, a valve and brush unit slidably mounted in the nozzle and the valve coacting with said valve seat to regulate ow from the nozzle, brush bristles on the brushvin advance of the valve thereon adapted to project beyond the discharge end of the nozzle, an elongated guiding groove With a notched bottom surface in the peripheral Wall of said nozzle, a manually shiftable magnet slidably carried in said groove and having a notched surface to mate with the notched surface of said groove, a magnet retainer having spring-like side Walls slidably embracing the substantially cylindrical nozzle and overlying the magnet to retain it in sliding contact with said groove, a cooperating magnet supported and carried by a stem projecting from the rear end of said valve and brush unit and intermediate its ends, said valve and brush unit -and magnet suitably spaced from said nozzle and adapted to follow said magnet in the groove in response to shifting of it in said groove, whereby Amanual shifting of the magnet retainer and the magnet retained by it in the groove Controls the position Of the valve and brush unit thereby governing both the reciprocal movement of the valve to and from the valve seat and the reciprocal movement of said brush bristles of the brush within and without said nozzle.

9. A fountain applicator comprising a tubular barrel closed at one end, a substantially cylindrical nozzle secured to the other end of the barrel and projecting therefrom, said nozzle having a valve seat adjacent the discharge orifice thereof, a valve and brush unit slidably mounted in the nozzle, the valve of said valve and brush unit coacting with said valve seat to regulate llow from the nozzle, the brush bristles of said brush of the valve and brush unit arranged in advance of the valve adapted to project beyond the discharge end of the nozzle, elongated guiding groove in the peripheral wall of said nozzle, said groove of substantially rectangular cross-section and closed at its ends, the bottom surface of the groove being notched, a manually shiftable magnet slidably carried in said groove and having a notched surface to mate with the notched surface of said groove, a magnet retainer having spring-like wall slidably embracing the substantially cylindrical nozzle and overlying the magnet to retain it in sliding contact with said groove, end tabs on said retainer overlying the ends of the magnet, a cooperating magnet supported and carried by a stem projecting rearwardly from the valve and brush unit and intermediate its ends, said valve and brush unit and magnet suitably spaced from said nozzle and adapted to axially follow said magnet in the groove in response to shifting of it in said groove, whereby manual shifting of the magnet retainer and the magnet retained by it in the groove controls the position of the valve and brush unit thereby governing both the reciprocal movement of the valve to and from the Valve seat and the reciprocal movement of the brush bristles of the brush Within and without said nozzle.

10. A fountain applicator comprising a tubular barrel closed at one end, a substantially cylindrical nozzle secured to the other end of the barrel and projecting therefrom, said nozzle having a valve seat adjacent the discharge orifice thereof, a valve and brush unit slidably mounted in the nozzle, the valve of said valve and brush unit coacting with said valve seat to regulate the flow from the nozzle, the brush of said valve and brush unit embodying a cylindrical body portion with brush bristles secured in one end thereof, said brush bristles arranged in advance of the valve adjacent thereto adapted to project beyond the discharge end of the nozzle, elongated guiding groove in the peripheral wall of said nozzle, said groove of substantially rectangular cross-section and closed at its ends, the bottom surface of the groove being notched, a manually shiftable magnet slidably carried in said groove and having a notched surface to mate with the notched surface of said groove, a magnet retainer having spring-like side walls slidably embracing the substantially cylindrical nozzle and overlying the magnet to retain it in sliding contact with said groove, end tabs on said retainer overlying the ends of the magnet, a cooperating magnet supported and carried within a bore in a stem integrally secured to the rear end of said valve and brush unit, said valve and brush unit suitably spaced within said nozzle with said cooperating magnet adapted to axially follow the magnet in the guiding groove in response to shifting of said magnet in said groove, manual shifting of the magnet retainer and the magnet retained by it in the groove controlling the position of the valve and brush unit thereby governing both the reciprocal movement of the valve thereof to and from the nozzle valve seat and the reciprocal movement of said brush bristles of the brush thereof within and without said nozzle, whereby under the influence of external pressure on said protruding brush bristles the magnetic force is overcome to retract said valve from its seating engagement With said nozzle valve seat to I permit flow from said tubular barrel to pass through said 2,289,574 Carlson July 14, 1942 discharge end of the nozzle. 2,485,494 Jockers Oct. 18, 1949 2,629,401 Miller Feb. 24, 1953 References Cited 1n the le of thls patent 2,700,395 Young jan, 25, 1955 UNITED STATES PATENTS 5 0 E GN PATENTS 230.120 French July 20, 1880 F R I 2,100,587 Chalker Nov. 30, 1937 535,692 Great Britain Apr. 12, 1950

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