US1273784A - Pneumatic paint-brush. - Google Patents

Description

1. A. PAASCHE.

PNEUMATIC PAINT BRUSH.

APPLICAHON FILED JAN.23. I915.

Patented July 23, 1918.

3 SHEETS-SHEET I.

.fizflenior: JansHFaasche J. A. PAASCHE.

PNEUMATIC PAINT BRUSH. APPLI CATlON FILED 1AN.23.1915.

Patented July 23, 1918.

3 SHEETSSHEET 2.

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PNEUMATIC PAINT BRUSH.

APPLICATION FILED JAN- 23. l9l5- I Patented July 23,1918.

3 SHEETS-SHEET 3.

Inn/e 11%0 1': Jens Hfaasche (2M1 GEM JENS A. PAASCHE, OF CHICAGO, ILLINOIS.

PNEUMATIC PAINT-BRUSH.

specification of Letters Patent. Patented July 23, 1918.

Application filed January 23, 1915. Serial Nu."- 8,8 63.

.To. all whom it may concern:

Be it known that I, Jane. A. PAAsoHn, a citizen of the United States, residing at Chicago, in the countyof Cook and State of Illinois, have invented certain new and useful Improvements in Pneumatic Paint- Brushes, of which the following is a speci-" This invention relates to the air-brush art and contemplates certain improvements which are herein shown as embodied in a brush of the type disclosed in my prior. Patent No. 1,104,217, issued July 21, 1914, although certain features of the invention are also applicable to other types of brushes.

One of the. objects of the present inven- 7 tion is to improve the construction of the color-discharge means and the operating means therefor.

Another object has to do with the position and relation of the air-trigger to the I color-trigger, whereby the air-valvem'ay be unseated to discharge air for the purpose of dusting qff' the work without affecting the color-discharge means.

A further object is to provide a brush which is particularly adapted for applying materials in powder form, as in bronzing or like work, the brush being arranged to handle a powdered coloring material in conjunction with a liquid. I

The invention also relates to color conta-iners of improved construction and to the means for associating said containers with the brush body. I

Anqtherobject is to provide'means whereby pressure may be placed upon the liquid paint material if desired, to assist in feeding said material. v

Further objects relate to various' details of construction which will be fully pointed out in the following description.

In the accompanying drawings, Figure 1 is a side elevation of a pneumatic paint brush embodying thefeatures of my inven.-, tion. Fig. 2 is'a side elevation ofa brush having a different style of paint container associated therewith. Fig. 3 is a longi tudinal central section through the 'brush, the paint containers being v omitted from this" view. Figs. 4,5 and 6am detail views of three interchangeable sets of color-discharge devices having different sized discharge orifices. Figs. 7 and 8 are respectively fragmental plan and sectional views illustrating the hollow needle or "tube which conveys the coloring material. Fig. 9 is an' end view of the forward end of the brush. Figs. 10

and 11 are longitudinal central sectional views of the powden and liquid containers, respectively. Fig '12 is' a transverse sectional view through the body taken in the plane of line 12. of Fig. 1 and illustrating a part of the means for placing air pressure upon the liquid coloring material.

I will herein describe in detail the preferred embodiment of my invention which is shown in'the drawings, without any intention, however, of limiting the invention itself to the construction disclosed,- except as recited in the appended claims.

The brush comprises a tubular or barrel '15' which. is tapered at its/forward endand has at its tip an air-nozzle 16. 'llhis nozzle is provided with a flaring guard or extension toinclose and protect the Up of the paint discharge structure which projectsf thereinto. Secured to the rear part of' thel barrel is a downwardly extending handle 17bywhich the brush is held in the hand like a pistol. Ribs 18 on the handle provide spaces for the fingersso that a more eflective and comfortable grip is afforded.

The thickness of the rear edge of the handle is increased by Vertical ribs '18 for the sake of comfort to the hand. 19 is a rod wh1ch is adjustably fixed in the handle by a screw 20 and provides a support or rest.

. On the rear end of the barrel 15' is mount- 2 ed a two-partl structure orhead 21. having an air passage 22 therethrough, the inner end of which passage communicates with a pipe 23 which runs to the air nozzle 16.

On the outer end of the head 21 is threaded a nipple24 which is adapted to be surrounded by a fiexiblehose 25, leading to a member bein upper end at 32 in the barrel 15.

A lug 33 projects downwardly from the forward end of the body or barrel 15 and supports a sleeve 34, the latter being secured in an opening in the lug by means of a set screw 35. On the forward end of the sleeve 34 is threaded a sleeve 36, within which are located the color needle 37 and nozzle 38. The color needle or tube 37 is suitably fixed in the forward end of the sleeve 34 with their central openings in alinement. The forward end of the needle is tapered, and the internal passage thereof terminates upon this tapered surface short of the extreme forward end of the needle. See Figs. 7 and 8. Preferably, the tapered portion of the needle is grooved or reduced in di-" ameter to provide one or more shoulders 39 for the purpose of providing a tighter'fit between the tapered portions of the needle and nozzle, so as to prevent leakage of fluid therefrom. The needle is also provided with a suitable number of annular grooves 40 located behind the tapered portion, the latter grooves being intended to receive a lubricant, preferably a very hard oil. Thisv oil greases the interior of the nozzle and facilitates sliding the same, and the oil also prevents any of the liquid-coloring material from working back between the needle and theknozzle and thus causing these parts to stic The nozzle 38 surrounds the needle 37 and is internally tapered at its forward end to fit against the tapered end of the needle. The nozzle fits loosely in the forward end of the sleeve and is slidable forward and back along the needle to open and close the forward end of the needle passage so as to control the discharge of paint materialtherefrom. A coiled spring 41 surrounds the nozzle and bears at one end against an internal shoulder on the sleeve 36 and at its other end against an annular shoulder or enlargement 42 on the nozzle, saidspring tending to hold the nozzle in its rearward position to cut off the discharge of paint material.

As will be seen from the drawings, the discharge orifice 43 in the forward end of the nozzle 38 is somewhat elongated or elliptical in shape and opens partially toward one side of the nozzle, the orifice being disposed in a general plane oblique to the axis of the nozzle and approaching a parallel to the air stream issuing from said nozzle. In other words, the side of said discharge orifice which is closest to-the orifice of the air nozzle 16 is cut back away from charge orifices 43 which vary in size.

the forward end of the paint nozzle 38 and toward the said air orifice.

The stream of air issuing from the orifice in the air nozzle diverges, and the color discharge structure is positioned so that the tip normally protrudes into this diverging air current. Thus when the nozzle 38 is slid forwardly, the oblique edge of the discharge orifice 43 therein will be carried well into the current of air. On account of the shape of the discharge orifice and its relation to the air current, the latter will exert a maximum pull in drawing out paint from the nozzle 38, because'the entire periphery of the discharge orifice is more accessible to the current of air than it would be if the.

orifice were formed at right angles to the axis of the paint nozzle, as is the common construction. By the shape and relation of the parts described, a maximum efficiency is obtained in which a given quantity of paint will be drawn out by the smallest amount of air.

The different coating materials which the brush is adapted to handle may vary in their viscosity, and in order that the brush may operate with the greatest efficiency for different materials, a plurality of similar paint discharge structures composed of the parts 34, 36, 37, 38, and 41, are in practice furnished with each brush, the color nozzles 38 of the different structures having dis- Figs. 4, 5 and 6 illustrate three different paint discharge structures having nozzles 38, 38 and 38 provided with discharge orifices 43, 43 and 43 of different sizes. The flaring dotted lines indicate approximately the different sizes of jets or sprays which will issue from these structures when open to full capacity.

The nozzle 38 is arranged to be moved forwardly to permit the discharge of color by means of a rod 44 within the barrel 15, the forward end of said rod passing through slots in the barrel and the sleeve 36 and'engaging in a recess 45 in the enlargement 42 of the nozzle 38. The rear end of the rod 44 passes loosely through an opening in the air trigger 31 and is connected to the upper end of a secondary trigger 46 which is mounted in this instance in a, slot in the handle 17 and'is pivoted on a removable pin or screw 47. The lower end of the trigger 46 is arranged to be engaged by the air trigger 31 when the. latter is moved reara short distance to open the air valve before theitrigger 46 is engaged. Thus the stream of air issuing from the nozzle 16 may be utilized to blow off dust from the article to be coated, and when the paint nozzle is opened the paint will immediately be caught by the already flowing current of air. As soon as the triggers are re leased, the spring 41 moves the nozzle 38 rearwardly to immediately cut off the flow of paint without any attention orv adjustment by the operator. Thus it is impossible for a quantity of paint to accumulate at the tip of the nozzle and there dry up and clog the outlets.

It is sometimes desirable in producing s'tipple effects to hold the paint nozzle partially projected or opened so that a constant or definite amount of paint may be drawn therefrom as soon as the air 'valve 27 is unseated and 'withoutoperating the trigger 46 by the trigger 31. To this end I have provided an adjustable screw 48 seated in the handle 17 ,the tip of the screw being arranged to bear against the trigger 46 above its pivot 47, so as to hold the rod 44 and the paint nozzle 38 projected the desired distance. A transverse opening 49 through the handle receives the head of the screw 48 and gives access thereto for adjusting the the paint discharge structure may now be bodily removed from the opening in the lug 33. Another structure is then inserted in place in the lugand the parts associated as before.

The liquid paint material may bev con- .tained in a can 56 (Fig. 1) supported directly upon the brush or in a bucket 51 (Fig.

2) adapted to be supported upon an elevated shelf or the like. The bucket may have a valved fitting 52 -thereon which is connected by a flexible hose 53 with a valved fitting 54 adapted to be attached to the rear end of the sleeve 34 of the paint discharge structure. The fitting 54 is preferably shaped so as to lie alongside the barrel 15, the end of said fitting being bent downwardly to engage the sleeve 34. This arrangement has been found to be the most convenient for the operator.

The can 50 has a fitting 55. rigidly secured to its lower end and communicating with its interior, the fitting having a valve 56 and being adapted to be rigidly attached to the rear end of the sleeve 34, the same as the fitting 54. The means for securing 12) interposed between eitherof these fittings to the sleeve 34 com' prises an enlarged conical head 57 on the gravity feed ofthe liquid vmaterial is ob-.

tained. This is found to be superior to the arrangement of paint containers heretofore employed, in which the containers were p0- sitioned below the paint discharge structure and the suction of the air was depended upon entirely to draw the paint material from the containers. The present brush is particularly adapted for use with materials of heavier or thicker consistency than those I commonly used with air brushes, such for example, aS ordinary house paints, lacquers,

-varnishes, etc., and a gravity feed is particularly desirable for such materials.

' It is sometimes desirable to place additional pressure upon the material to assist in feeding the same and I have provided means for accomplishin this. The can 50 is provided with a friction tight cover 59 having a central stem 60 rigid therewith,

the lower end of which is adapted to be threaded into a boss 6-1 on the bottom of the can, for firmly securing the cover in place. On the upper side of the cover is fixed a head 62 which is cupped on its upper side and from this cup a passage 63 leads through the stem 60 to the interiorof the can. A flexible hose 64 has secured to one end a tapering head 65 arranged to engage in the cupped head 62 and to be secured therein by a surrounding nut 66 engaging exterior threads on said head 62. The other end of to the interior of the can to replace pres-- sure on the liquid therein. The flow of the air is controlled by a valved fitting 67 (Fig. v the air passage 22 and the hose 64, said l fitting comprising a body having a passageway, in which is formed a tapering valve seat arranged to coiiperate with a needle valve member 68, whereby the flow of air may be entirely cut off or regulated as desired.

A can'69 adapted to receive a powdered coating material is positioned'above the forward end of the body of the brush, being mounted in a bracket 7 O which has one .end detachably secured to the upper side of the barrel 15 as by a screw 71. The free end of said bracket is in the form of a ring 72 in which the can-69 is seated, being suitably held therein by means such as a set-screw 73.

The lower end of the can is conical or funnel-s'haped and the ring 72 may be interiorly shaped to conform to the funnel portion of the can (see Fig. 10). The can is provided with a friction tight cover 74 and to the inner side of this cover is rigidly secured one end of a sleeve 75, the lower end of said sleeve bein threaded in a suitable cross-bar or spider 7 6 fixed in the lower p ortion of the can. A rod 77 hasa portion 78 threaded in the cover and the sleeve 75 and has a knurled head 79 fixed on its upper end outside of the cover, whereby the rod may be manually rotated. The lower end of the rod is tapered as at 80 and constitutes a valve member adapted to coact with atapered valve seat 81 formed on the upper end of a nozzle 82 which is threaded into the' lower end of the funnel portion of the can 69. Above the tapered or valve portion 80 of the rod, one or more vanes or wings 83 are fixed on the rod, which act as stirrers to agitate the powder in the can and prevent it from packing when the rod is rotated. The lower end of the rod may be positioned at any desired distance from the valve seat 81 to regulate the rate of escape of the powder from the can.

The nozzle 82 occupies a notch in the end of the guard flange on the air nozzle 16 and extends into the path of the air current which issues from the air nozzle. The powder nozzle 82 is preferably located forwardly of the tip of the paint nozzle 38.

It will be understood that when ordinary paint, varnish or similar material is to be used, the powder can 69 will not be needed and may be removed from the brush by detaching the bracket 70 from the barrel 15. The paintis then placed in the liquid paint container 50 or 51, and the brush operated in the manner hereinbefore described. It is possible to use bronze paint in this way by mixing the powder and liquid materials together and placing the mixture in the liquid paint container, but this is objectionable,

because if the mixture is allowed to standfor'any considerable length of time, it turns green or otherwise discolors, so that it is unfit for use. To remedy this dlfliculty, I have provided two separate containers, one adapted to receive the bronze powder. and the other an oil or other liquid suitable for use therewith. ture the air current issuing from the nozzle 16 draws the liquid paint material from the needle 37 and nozzle 38 and also draws the powdered material from the nozzle 82 and carries both materials together against the article to be coated. I believe myself to be the first to provide separate containers for the paint ingredients in a pneumatic paint brush.

I claim as my invention:

1. A pneumatic paint brush having, in

In the operation of this struccombination, an air nozzle, a paint nozzle located outside of and at an angle to said air nozzle, the discharge orifice at the forward end of said paint nozzle opening toward the side adjacent to the discharge orifice of said air nozzle and being located in the path of the air current, and a member Within said paint nozzle for controlling the discharge of paint.

2. A pneumatic paint brush having, in combination, a paint discharge structure comprising a tubular nozzle tapered at its forward end and a needle within said nozzle for controlling the discharge of paint therefrom, the discharge orifice at-"the forward end of said nozzle being oblique with respect to the axis of the nozzle, and an air nozzle separate from and extending at an angle to said paint discharge structure, said discharge orifice of the paint nozzle being disposed in adirection approaching a parallel to the air current issuing from said air nozzle.

3. A pneumatic paint brush having, in combination, a body having an air nozzle on its forward end, said nozzle being provided with a flared portion extending outwardly from the orifice in the nozzle, said flared portion being recessed to receive a paint nozzle, and a paint-discharge structure comprising a tubular nozzle having its forward or discharge end occupying said recessed portion of the air nozzle, the discharge orifice at the forward end of the paint nozzle being. disposed oblique to the axis of said nozzle and in a direction approaching a parallel to the air current issuing from said air nozzle, and means in said paint nozzle to control the discharge of paint.

4. A pneumatic paint brush having, in combination, an air nozzle, a paint nozzle located outside of and at an angle to the axis of said air nozzle, said paint nozzle being tapered at its forward end, the discharge orifice at the forward end of said paint nozzle being cut back from the extreme forward end on the side adjacent to the orifice of said air nozzle, whereby to obtain a more efficient relation of the current of air to said dis- 1 charge orifice of the aint nozzle, and a needle within said palnt nozzle having a tapered end to close the latter for controlling the discharge of paint therefrom.

5. A pneumatic paintbrush having, in

combination, an air nozzle, a hollow needle 6!: forward sleeve, acoiled' surrounding the edge of the" discharge orifice of said .nozzle'bein disposed obliquely to the axis of the nozz e and in a direction approximating a parallel to the. path of the air current issuing from said air nozzle. I

6. A pneumatic paint brush having, in combination, a needle having a tapered 'forward end and having a longitudinal passageway therethrough terminating at its forward end on said tapered surface, a nozzle surrounding said needle and internally taperedat its forward end to fit against the tapered surface of the needle, the'latter having an annular shoulder on said tapered section between the ends thereof which provides a relatively sharp edge to contact with the internal tapered portion of saidnozzle, whereby to effect a tlght joint and prevent leakage.

7. A pneumatic paint brush having, in

combination, a hollow needle having a tapered forward end, the passage in the needle terminating on said tapered surface, the needle having one or'more annular grooves in its periphery behind said tapered surface, the grooves adapted to be filled with hardoil, and a nozzle surrounding said needle and having a'taperedforward end conforming to the tapered end of the needle.

9. A pneumatic paint brush having, in combination, a body having a perforatedlug thereon, a sleeve passing through the perforation in said lug, aset-screw for fixing said sleeve therein, a second sleeve-threaded on the; forward end of the firstasle'evefahead of said lug, a hollow needle fixed in the' first sleeve,- a nozzle-slidably mountedort said needle and positioned within: the second sleeve, means tending'toymovesaid nozzle rearwardly, and neansfor' Il'lQVlIlgSHJClIlOZ paint material.

zle forwardly to permit the discharge of: v I

- 1 .theforward end-of thebody,'a'pair of finger I levers mounted at the m d Iportion of the body, and rods connecting the respective levers 1 with theai'r' :va-lve; and the paint dis: "charge means"":j. A altic paint brush having, in combination," a body-having 1a downwardly; 'extend-in'g'handleby whichthe brush may; be held like a; pistol, aniair; nozzleat the for-1'- wardend 'of said=body, fa" needle mountedfonfe; y,aneiz eisurmim i g vsaid. n e

10-. Alpneumatic paintbrush ilme -3,41; -combination, a body in' thefornrofa bar-. 'rel having an-exterior perforated lug; a

. sleeve passing through the perforation in said lug, a seconds eeve threaded onthe forward end of thefirst sleeve ahead) of said I lug, a hollowneedle secured 'in1the for-wardendiofthe'rear sleevejla nozzle slidabl silt-1* rounding said'needle' and located with nthe the nozzle within said forward leev a d tending to-move the nozzle rearwardly, the

forward sleeve and said barrelhavin alined 1 slots therethrough, a rod passing t rough said slots; said nozzle havin 11. A pneumatic paint brush having, combination, a body having --'a downwardly extending handle by which "the brush mayQ a recess inwhich the forward end of sai [rod engages, 1 and means for longitudinally movingsaid rod to slide said nozzle forwardly ag'ainst:" the'action of said spring.

be held hke a dpistol, a pair of triggers piv-- oted one ahea of the other and .in front of said handle, and air discharge'means ,an'd paint discharge means connected 'to the ;.re-"- spective triggers for operation thereb 12. A pneumatic paintbrush hav ng,- 111"" combination, a body having. a downwardly extending handle by which the brush may be" held like a pistol, a pair of downwardly extending triggers pivoted one ahead of the other and in front of saidhandle, air discharge means connected to the forward trig ger, and paint discharge means connected tothe rear trigger.

neumatic paint brush having, combinat on, a body hav ng a downwardly;

extendinghandleby which the brush may be held like a pistol, a pair of downwardly triggers'pivoted one ahead of'the in front of said handle, 'a ir disv a valve connected to the front trigger, paint discharge means connected to the rear trig er,"said front trig extending other an charge means includi-n gerbeing arranged to engage and move said rear trigger, and the two triggers'being spaced apart, whereby the front trigger may be moved rearwardly to unseat the an valve before engaging the rear trigger;

paint discharge means operatively-connected '14. A pneumatic paint brush' having', combination, a body, two finger =levers. mounted thereon, air discharge means ops eratively connected to one 0f-sa1d.- levers,-

10... to the other lever, the air lever 'bein :ar-

ranged to engage and move the paint ever,,.

and'5the two levers being spaced apart,

whereby the air lever may be movedto un-' se'a tgthe' ail-{discharge meansbefore Qngagm'gthepaint lever.

and slidable forwardly 'and back thereon to control the discharge of paint, a spring tending to move said nozzle rearwardly to cut off the flow of paint, a rod slidably mounted in the body and engagin the last mentioned nozzle, and a downward y extending trigger lever pivoted in front of said handle and ada ted to slide said rod forwardly.

1 A pneumatic paint brush having, in combination, a body, an air nozzle at the forward end of said body, an air valve at the rear end of said body, a paint nozzle adjacent to said air nozzle, a rod arranged to move said paint nozzle forwardly, a second rod arranged to move said air valve rearwardly to open the valve, *and finger lever means for simultaneously sliding said rods in opposite directions.

18. A pneumatic paint brush having, in combination, a body having a downwardly extending-(handle by which the brush may be held 11 e a pistol, an air valve at the rear end of said body, a pair of'triggers pivoted forwardly of said handle, a rod connecting one of said triggers with said air valve, a paint nozzle at the forward end of said body, and a rod connecting the other one of said triggers with said paint nozzle.

19. A pneumatic paint brush having, in combination, a body having a downwardly extending handle by which the brush may be held like a pistol, an air nozzle at the forward end of said body, a needle mounted on the body, a nozzle surrounding said needle and slidable forwardly and back thereon to control the discharge of paint, a spring tending to move said nozzle rearwardly to cut off the flow of paint, a rod slidably mounted in the body and engaging the last mentioned nozzle, a downwardly extendin trigger lever pivoted in front of said andle and adapted to slide said rod forwardly, and a screw threaded in the handle and adjustable to bear against said trigger and hold the rod in position to maintain the paint nozzle open.

20. A pneumatic paint brush having, in combination, an air nozzle, means for discharging liquid paint material into the path of air issuing from said nozzle, a container for powdered paint material, and a nozzle adapted to receive powder from said container and discharge the powder into the path of air issuing from said air nozzle, said liquid and said powder discharging means being capable of simultaneous or independent operation.

21. A pneumatic paint brush, having in combination, an air nozzle, means for feeding liquid paint material into the path of the air current issuing from said air nozzle, and means for feeding powdered paint material into the path of the air current in front of the point where the liquid paint material is discharged.

22. A pneumatic paint brush having, in combination, an air nozzle, a liquid paint dischargingnozzle and a powdered paint discharging nozzle arranged to feed material into the path of air current issuing from said air nozzle.

23. A pneumatic paint brush having, in combination, an air nozzle, a liquid paint nozzle, and a powdered paint nozzle arranged to discharge material into the pathof the air current issuing from said air nozzle the liquid paint nozzle being positioned behind the powder paint nozzle.

24. A pneumatic-paint brush having, in combination, an air nozzle, liquid paint material discharging means, a powdered paint container having a funnel-shape lower end, and having a nozzle at the tip of the funnel projecting into the path of the air current issuing from said air nozzle, both of said -paint discharge means being capable of simultaneous or independent operation.

25. A pneumatic paint-brush having, in combination, a body having an air nozzle at its forward end, aipaint nozzle mounted outside of and at art angle to said body, a container for. liquid paint material communicating with said paint nozzle, a bracket mounted on the body, a container for powdered paint material mounted in said-bracket, and a nozzle communicating with the powder container, the latter nozzle and the- .ed in said container and having vanes thereon adapted to prevent packing of the material, and means to direct the material into the path of the air current. n

28. A pneumatic paint brush having, in combination, a container for paint material, a cover therefor, a sleeve fixed to the inner side of said cover, a s ider in which said sleeve is threaded, sai spider being fixed in the lower portion of said container, an adjusta'bly mounted rod passing through said sleeve, and agitating vanes on said rod.

29. A pneumatic paint brush having, in combination, a container for paint material, a cover therefor,- a sleeve fixed to the inner side of said cover, a spider in which said sleeve is threaded, said spider being fixed in the lower portion of said container, an adjustably mounted rod passing through said too sleeve, the lower end of said rod providing a valve member, and an outlet nozzle for the container having a valve seat to cooperate with said valve member.

30. A pneumatic'paint brush having, in combination, a body having an air nozzle at its forward end, a faint discharge structure and at an angle to said mounted outside 0 body, said structure comprising asleeve open at its rear end and exteriorly threaded adjacent to said rear end, a container for liquid paint -material, a valved'fitting secured to the bottom of the container and communicating therewith, an enlarged head on said fitting arranged to engage in said sleeve, and a nut engaging said head and arranged to be turned onto the threaded rear end of said sleeve. g 31. A pneumatic paint brush having, in combination, paint discharge means including a sleeve open at one'end and exteriorly threaded adjacent to said end, a container for paint material, a conductor communicating with said container and having an enlarged conical head on one end arrangedto engage in the end of said sleeve, and a nut surrounding said conductor and engaging said head and adapted to be turned onto the threaded rear end of said sleeve to clamp the head thereto.

32. A pneumatic paintbrush having, in combination, a tubular body having an air nozzle on its forward end, a paint discharge structure mounted outside of and at an" angle to said air nozzle, said paint discharge structure comprising a needle and a nozzle slidable on the needle to control the discharge of paint, the body having a downwardly extending handle by which the brush may be held like a. pistol, a trigger pivoted in the body and extending downwardly in front of said handle, and a rod operatively associated at its rear end with said trigger and at its forward end with said paint nozzle,

whereby .the nozzle may be projected forwardly by moving said trigger rearwardly.

33. A pneumatic paint brush having, in combination, a' body provided with a downwardly extending handle by which the brush may be held like a pistol, a paint discharge structure comprising two elements one of which is slidable with reference to theother, a trigger extending downwardly in front of said handle, a. rod extending forwardly from said trigger and operatively connecting the trigger to the said slidable element for moving the latter, said handle having a lateral opening therethrough, and a screw threaded in said handle and arranged to bear against said trigger to limit rearward movement of said rod, the head of said screw occupying said opening in the handle to facilitate access to said head.

34. A neumatic paint brush having, in coml'iination, a body provided with a downin front of said handle, means operativ ely connecting said trigger to the paint discharge means for opening the latter, and an adjustable screw threaded in said handle'and arranged to hold said-trigger in position to maintain the paint discharge means open.

35. A pneumatic paint brush having, in combination, a body having an air nozzle at its forward end, a liquid paint discharging structure adapted to discharge intothe path of the air current and comprising two members relatively movable to control the discharge of paint, and a powdered paint container rigidly mounted on the body and having its outlet positioned to direct powder into the path of 'the air current.

36. A pneumatic paint brush comprising, in combination, a unitary structure adapted to be held in the hand and having three nozzles for delivering air,liquid and powder, respectively, the air nozzle being located at the extreme forward end of the brush and the other two nozzles being located to discharge liquid and powder into the path, of the air current. i

37. A pneumatic paint brush comprising, in combination, three separate nozzles arranged to deliver air, liquid and powder, respectively, at a common point located at the extreme forward end of the brush.

38. A pneumatic paint brush comprising, in combination, three nozzles arranged to deliver air, liquid and powder, respectively, said nozzles being positioned outside of and independent of each other and all being locattd at the extreme forward end of the brush.

39. A pneumatic paint brush having, in combination, an air-5 nozzle, means for discharging liquid paint material into the path of air issuing from said nozzle, a container for powdered paint material, and a nozzle adapted to receive powder from said container, the tip ofthe latter nozzle being located at the extreme forward end of the air nozzle and adapted to discharge the powder into the air current. f

40. A pneumatic paint brush having, in combination, an air nozzle, a liquid paint discharging structure located outside of and at an oblique angle to said air nozzle and 41. A, neumatic paint brush having, in

combination, a body provided witlran air nozzle at its forward end, a liquld paint discharge structure mounted on the body outside of and at an oblique angle to said air In testimony whereof, 'I hereunto set my nozzle and arranged to dischargeliquid paint hand in the presence of two witnesses.

into the path of the air current, and a pow- 4 *1 t dered paint container mounted on said body JENS PAAbbHI" above said air nozzle, the outlet from said I In the presence of container being arranged to direct the pow- O. G. PAASCHE,

dered paint into the path of the air current. LOUISE JmUsKA.

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