US1777650A

US1777650A - Air brush and the like

Info

Publication number: US1777650A
Application number: US73861A
Authority: US
Inventors: Jens A Paasche
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-12-07
Filing date: 1925-12-07
Publication date: 1930-10-07
Anticipated expiration: 1947-10-07

Description

Oct. 7, 1930. J. A. PAAscHE AIR BRUSH AND THE LIKE Filed Dec. 7, 1925 4 Sheets-Sheet l Oct, 7, 1930.

J. A. PAAscl-IE AIR BRUSH AND THE LIKE 4 sheet-sne'et 2 Filed Deo. 7, 1925 LSC/Ze @m um NHW J. A. PAAscHE AIR BRUSH AND THE LIKE Filed Dec. 7,

4 Sheets-Sheet 3 oct. 7,- 1930. J, A. PAASCHE .1,777,650 i AIR BRUSH AND THE LIKE Filed Dec. 7, 1925 4 Sheets-Sheet 4 Je] as VZDQQS C/z e k@ wwf/@ l /7 (LO/ a' Patentedl Oct, 7; 193|) PATENT oFFlcE .TENS n. rnasorrn, or WILMETTE, ILLINo'Is 'f ain BnUsH AND THEALIKE Application filed Ileceinber l{,1925. Serial No. 73,881.

The present invention has to do with improvements in air brushes and the like. It has to do .with improvementsin air brushes for various classes of service, and the fea-l tures of the present invention may be used in connection With large or small brushes, and also brushes/intended for use with many different kinds and consistencies of material.

@ne object of the present invention is to 10 provide an air brush having a multiple head I which is so vconstructed that it will be absolutely floating or self-centerin with respect to the plunger, so that when t e fluid tip is set into place on the body member, it will be compelled to corne into perfect aligmnent with the plunger, and Without the necessity of any elaborate adjustments or special fit- I' tings by the person assembling the parts.' v

In connection with the foregoing, it is a .further object to provide a head/ unit having a central tip orifice for the fluid, which orifice is controlled by the fluid valve plunger, together with an encircling annular orifice for a the air. It will be understood that perfecty operation of such a device requires that the central fluid valve plunger opening sha-1l be perfectly registeredrwith the tip of the fluid valve, so that as the iuid valve plunger is 'moved back andforth, the opening for the liquid shall be perfectly symmetrical all 40 around 'the circle. It is also required that then annular air opening shall be perfectly sym metrical with respect to the fluid valve plunger opening, so that the air -opening shallbe of perfectly uniform size all around the circle and shall be. perfectly concentric with re.

.spect to the needle' and tlie tip opening It is an object of the invention tov provide a tip unit of extremelyv simple form, but

which is so arranged that it can be immediately set into-place on the body of the air brush by an unskilled user, but, nevertheless, with assurance that it will naturally be compelled to come into perfect alignment and registry to comply. with the foregoing requirements.' y

Another feature of the invention relates to the provision of an air brush which is so arranged that the spray can be adjusted from a perfect cone to a perfect fiat fan. In this connection, it is an object to provide an improved spray control by the use of crescent shaped side air orifices for shapin theJ round narrow air cone into 'a wide an perfectly even fan spray. Also, to provide means for easily regulating the volume of air delivered through these side orifices, thereby obtaining easy control from the widest to the narrowest spray. v v

Another feature of theinvention relatesv to the provision of an air cap unit which'can be 70 turned around on the axis of the tip member vso as. to bring the side air discharge oriices into any desired plane with respect to the horizontal. This will make it possible to establish a flat fan spray on any selected lane with res ect to the axis of the brush, an thus greatly acilitate the use of the device under the most varying. conditions of service. -In connection Mith the foregoi'n it 1s an object to provida" construction suc that the 80.v

air cap can thus be turned intoffany desired angular position without upsetting or-aiectin the adj ustmentof the tip elements. This wi l make it possible to secure perfect operation of the head unit in any posltion in which itis turned. f Another feature of th'e invention relates to the provision of a revolving fluid inlet connection in which the li uid supply/discharge is brought intovthe ody portion of the device substantially parallel to the fluid valve, the hose connection also being established by a` broad angle insteadofat. right angles tothe axis of the device. This will eliminate abrupt changes of directionof the liquid giving correspondingly improved coni trol and delivery. This will also largely eliminate the tendency of the solid matter or pigment to ack into the sharp angle of .L ie passage w ere it would soon interfere sary to bring the liquid hose connection froml a different position than in other cases. It

will also make it possible to use the same device for4 a liquid supply either from a hose or cup; and also'make it convenient to use either gravity or syphon feed from cups, as desired.'-

A further feature of the invention relates zoto the provision of an improved arrangelment of compression packing for the iiuid plunger at the position where it should be sealed against liquid seepage. An object in this connection is to provide a very ef- 83 fective and satisfactory forni of packing, and one which can be replaced or renewed fromtime to time in a very simple manner.

Another feature of the invention relates' to the provision of a construction such that,

s if desired, head extension devicesl may be 'inserted between the front portion of the bodyrand the spray'head unit so as to place the spray head unit itself at a greater distance fromthe handle and trigger.y In this 85' connection, it is an object to provide a construction. such that when a head extension i device is used, the head unit, will function properly and perfectly. 'A further object in connection with the foregoing is to provide head extension devices of curved or angular form, such that the direction of the v spray may be `different from the axial direction of the body itself. This will make it possible to hold the body member in the most convenient y-psition for satisfactory manipulation, and, at the same time, insure a discharge of spray in the most satisfactory and effective direction for the work in hand, Other objects are to generally improve erating parts, as well as the other elements of the device; In this connection, one' object is to so arrangethese partsthat they can be readily made from sheet metal stampings vorl byv `other .approved -manufacturing processes which permit of standardization andcorresponding improvement ofuniformity,complete interchangeability of all parts eliminating repairs, loss of time and costly shut` downs, as well as reduction of cost of manufacture.

Other "objects and uses of the invention will appear from a' detailed description of the same, which yconsists in the yfeatures ofthe construction ofthe trigger and valve opconstruction and combinations of parts hereinafter" described and claimed.

In the drawings:

Figure l shows a side elevation of an air brush embodying the features of the present invention, the central portion of the body being shown in section;

Fig. 2 shows a longitudinal section through the front portion of the body member and head unit on enlarged scale as compared to Fig. 1;

Fig. 3 shows a front end view corresponding to Fig. 2;

F igm et shows a longitudinal section through the head unit itself removed from the body member and at right angles to Fig. 2. Fig. 44 is also a section on the line 4 4 of Fig. 5, looking in the direction of the 3, with the exception that the front ring has been removed;

Figs. 6, 7, 8, 9, 10.' and 11 are cross sec- Fig. 12 is a fragmentary View of the front4 end of the device on smaller scale than Fig. 1, and shows diagrammatically'the general range of spray orms which may be produced; l

Fig.13'is'y a fragmentary fr ont end'view of the body member with the head unlt removed;

Fig. 14. is a side view of the front ring .of the head unit;

Fig. 15 is aside View of the`body of the head unit with the ring and other parts removed; Y

Fig. 16 is a side view of the needle block of the head unit;

Fig. 17 is a side viewof the union nut for the needle block;

Fig. 18 is a side view of the union n ut for joining the body of the head unit to the union nut of Fig. 17;

Fig. 19 is a side elevation of an air brush `embodying the features of the present invention on reduced scale, the handle and trigger being broken away, and shows how a liquid cup can be directly attached to the device;

Fig. 20 is a view similar to that of Fig. 19 showing how' a liquid hose may be brought to thev liquid connection from a position above the body itself; and

Fig. 21 shows a longitudinal sectionon enlarged scale through an extension device which is formed on a curve or angle.

The body member includes a cylindrical block 25, the rear portion of which is hollowed out to establish the chamber 26. This chamber is preferably open on its bottoni side to establish a slotted opening 27. The handle 28 may be connected to thebody 25 by means F ig. 5 shows a view similar to that of Fig.'

fof anut 29 having an enlarged head 30 which can be slipped through the enlarged front end portion of the slot 27 and then worked backwards with respect to the body and finally lockedby means of the nut 31.

The rear end of the open portion 26 is closed by a partition 32; and the rear cap 33 has its front end threaded onto the rear end of the body and brought up close to the position of the partition 32. This rear cap 33 is provided with a front recess 34 which, together with the partition 32, establishes an air chamber. 1

An air hose 35 is connected to the rear end of the block 33 in any convenient manner, as by the nipple 36 and union nut 37. A small chamber 38 is formed in the rear end of the block 33 into which the compressed air is directly delivered. A passage 39 leads from the chamber 38 tothe chamber 34 and is controlled by a valve 40 which is normally seated by a spring 41.

A block'42 isslidably extended through the partition 32, the rearend of said block having a socket to receive the front end of the valve stem 40. Preferably, a tine screen 43 is placed immediately in advance of .the

chamber 38, said screen being locked in place by one or more threaded rings 44, as illustrated in Fig; 1.

y Vithin the front end of the chamber 26 there is pivotally mounted the trigger 45. This trigger is preferably made from a sheet metal stampingfor which purpose the 'lower portion 46 of the trigger is folded over into a U-shaped cross section, as evident from comparison of Figs. 1, 2 and 11. The upper .portion of this sheet metall stamping is slotted, as shown at 47 and 48 4in Fig, 2 in particular, the maj or-portion of the metal cut out from these slotted openings being folded backwards, as shown at 49 and 50 to establish a backwardly facing V-shaped socket, as shown in Figs. l and 2. The upper end of the trigger is pivoted to the body member 25 by a cross pin 51. A link pin 52 has its front end seated into the V-shaped socket of the trigger, already referred to, and its rear end .seated into a suitable ball socketin the front i end of the block 42. Consequently, the backward movement of the trigger will control the air valve 40.

A tube 53 reaches from the chamber 34 forwards to a small chamber 54 in the upper portion of the front end of the block 25.-

This tube53 is placed in the` upper portion `of the chambered opening 26. Thetube also reaches between the bifurcations of the upper end -ofthe trigger 45, as clearly shown in Fi 1.

'The extreme front end of the body member 25 is tapered on an angle of substantially as shown at 55 in Fig. 2. A shoulder 56 isformed immediately behind the tapered end 55 and is adapted to receive a union nut 57.

A block 58 has its rear end tapered to seat mcely against the tapered end 55 on which the b lock 58 is swivelly'mounted The union nut 57 holds the block 58 to the body member V25, but allows said block 58 to be turned with passages 59 which terminate at their rear ends in an annular groove 60 ofthe block 58. Similarly, the body member 25 is preferably prc-V H .vided with a pair of small passages 61 reaching between the chamber 54, already referred to, and the front end of the body member 25.

.Consequently, air will be delivercd'through the passages59 of the block 58, no matter 4what position said block may be turned into.

The block 58 is provided at one end with a I nipple 62 to which the liquid hose or cup or other source of supply may be connected. This nipple preferably reaches backwards on an angle of 20 or 30 from the vertical, as clearly evident from Figs. l, 2, 19 and 20.

The bore 63 of the nipple 62 communicates at its inner end with a longitudinal bore 64 reaching forwardly through the axial portion -of the block 58 and delivering liquid to the head unit or 'extension in case one is used. A fluid valve plunger 65 is slidably mounted through the axial portion of the block 58 and also reaches into the front end portion of the body member 25. This plunger finds a bearing in the block 58 and also preferably two bearings in the body 25, so that it is amply supported.

The plunger is provided in its rear portion with a collar 66 which is in advance of the lug 67 which provides the rear end bearing for the plunger. A spring 68 is located between the collar and said lug and tends to throw the plunger forward to close the liquid supply.

A latch 69 is slidably mounted in the lower portion of the body member 25. This latch is conveniently made in the form of a sheet metal stamping of U-shaped cross section` as will be particularly evident from Fig. 1. The

rear end of thisvlatch is preferably turned v down, as lshown at 70, so that it can be conveniently pinned to the trigger 45 by the pin 71 at a position below the socket for the 'front end of the' air valve operating link 52. The front portion of the latch 69 is provided with a pair of side'fingers 72 and 73 which engage the opposite sides of the collar 66. These fingers preferably. have their upper` ends hooked backwards, as shown at 74 in Fig. 2, so that the parts will not become too readily disengaged.

Within the co-operating end portions of the body member 25 and the block 58.are a pair of sockets within which may be placed a series of rings of packing material 75, as best shown in Fig. 2. These packing rings are llU preferably made of chrome leather. Prefer'- ably a tapered ring 76 is placed at lthe front end, and another tapered block 77 at the back end of the series. A metal ring 78 having its 5 lfront 'face conical in form sets against the rearmost block 77, so thatwhen said block is forcedforward, it tends to compress the packing rings more irmlyagainst the plunger 65. A spring 79 is placed between the front end of the body 25 and the ring 7 8, so thatwhen the block 58 is drawn into place by the union nut 57, said spring 79 is compressed and holds the packing rings under permanent compression.'y -It is a relatively simple matter to remove the block 58 from the body 25 and either replace the packing rings or add another to the series, if desired. l Surrounding theposition of the liquid passage 64 there is a channel 80 in the front face ofthe block 58. The aii` coming through `the passage 59 is delivered into this channel. I have provided head units of a construction to cooperate With the liquid 'passage- 64 and the air channel 80, said head units including the features referred lto i .the preamble of this case. Thehead unit is designated in its entirety by the numeral 81. It includes a circular body block 82, the front face 83 of which is preferablyformed on a convex suri face. This body block is provided with an inwardlv reaching conical recess 84 on its back side which communicates at its front end with `a tapered circular opening 852l AThis opening 85 is preferably formed with a taper of substantially A12 with respect to the axis o f the device.l A

A-.cone block 86 is formed on a taper to seat perfectly within the recess 84, but the front end of this cone block terminates short 4" of the end of the recess 84 so as to establish an air passage 87 between the parts, as indi-- vThe perfect centerlng of these arts ensures cated in Fig. 4. v

The cone block 86 is also provided FWith a forwardly reaching cone'tip 88 of slightly smaller size than the opening 85, already referred to. and the 'outside surface offthe tip 88 ispreferably on a smalleriangle than the opening 85. forexample, 8 with` respect to the axis. There is thus left a fine annular passage 89 betweenqthe parts, the size of said passage tapering from back to front.

The cone block 86 is provided with a central passage 90 which terminates in a tapered front end 91, the extreme en'd of which estab-r, lishes the liquid delivery opening 92, as'cle'ar- 1y indicated in Fig. 4. This opering 92 is perfectly concentricwith respect to the 'annular opening 89.

nular shoulder 93 which receives a lunion nut 94` said union nut threading onto the extreme front end of the block 58. The size of the union nut and shoulder are ysuch that kthe cone block 86 may have a sufficient amount of lateral movement to make certain that it The cone'block 86 isprovided with an an so that the continuityl and tightness of the passages is insured.

In connection with the foregoing, the cone .block 'is provided with a series of longitudinally extending passages-95, shown particularly in Figs. 2, 6 and 7. f The rear ends er) of these `passages register with 'the annular l groove and their front endsserve to deliver air at the annular passage 87 at thev front end of thecone block. 'The liquid passage of the cone block comes into direct S5 registry with the liquid passage 64 of the block 58.

Before the union nut 94 is threaded into the block 58, another union nut 96 is set into "place against a shoulder 97 on the union nut 90 94, as clearly shown inF ig. 4. The tip block 82 is provided with a tapered recess which is of )exact size and taper to receive the taper ofthe cone block, as shown iuFig. 4, particularly; so that by threading the union nut 96 ontothe rear end of the tip block 82, and drawing the parts firmly together the rear end of the tip block 82 will come to seat against the front end of ythe union nut 94 at the same time that the tapered recess of the tip block seats against the conical outside surface of the conical block. This is clearly indicated in Fig. 4. As a consequence,the tip block 82 is perfectly centered on the cone block 86, and at the'saine time, the tip block lo; is permitted to turn about the ,central axis.

that the annular orices 89 will e of exactly. uniform width all around the. circle.

From the above, it is` evident that I have provided a construction such that the parts are 'perfectlycentered with respect to the plunger, and also with respect to each other,

so `as to ensure perfect Valignment without the necessit of any particular adjustments N5 or care on t e part of the user.

There is a groove 98reaching around the 'front face of the tip block 82, and at the position of this groove the front face of the tip block is beveled backwardly, as shown at 99 4in Fig. 2in particular. Ahead fan guard 100 is threaded onto the front end of l the tip block 82, having a flange 101 Whlch overlies the groove 98 and encloses the same.

The tip block 82 is also provided with a pair 12" v of diametrically opposite crescent shapedl l notches 102 and- 103, as shown in Fig. 5, which communicate y directl withl the groove 98. Uponthreading. the an guard 100 into'place, the groove '98 is completely covered over, but l5 In connection with the foregoing,

the two crescent '

notches

102 and 103 remain exposed, as indicated in Fig. 3, so as to establish the .desired side air delivery for creation of the fan.

I wish and balances perfectly with the two crescent shaped air streams released. f In order to'deliver air to the groove 98 under control, I have provided a valve 104 having a handle 105 by which it can be turned.

This valve is provided withv a longitudinal passage 106 which delivers air un'der control to the passage 107 leading directly to the groove 98, as clearly indicated in Fig. 2.

From the above it is evident that'I have provided aV head unit whichcan be turned around the longitudinal axis so as to bring g the fan into any angular position, while at the same time maintaining perfect axial alignment of the liquid and air orifices; and I also havemade` provision forv controlling .the shape of t-hefan or entirely closing the fan oriices -for any position o f the head unit,

Any suitable means Amay be used for delivering liquid to the connection 62. For example, as illustrated in Fig. 1, a cock 108 may be directly attached to the connection 62 40 as by means of a union nut 109, the liquid supply hose in turn being attached to the nipple 110 at the other side of the cock. ,In such case, the liquid will be delivered to 4the ,passage 64 at the angle determined by the direction ofthe passage 63.

Furthermore, thel block 58 can be rotated so as to present the connection 62 at any desired position around the` circle, and. the liquid may be supplied to the connection 62 at any such position. Frequently, it will be desirable to bring the liquid hose 111 to the p brush at aposition above the air hose 35, as shown in 20. In such case, a curved nipple 112 is preferably attached directly to cock 108 being then attached to the other end of the nipple 112 by the union nut 114. In

balance with the conical delivery of air from` the connectionv 62 by the union nut 113, theE but preferably a curved nipple, such as 112, is used in this case, the cock 108 being placed between the cup 115 and the nipple 112.

In some cases, it may be desirable to use` a siphon feed of liquid. For this purpose, the block 58 may be turned around to bring the connection 62 to the bottom side and then the siphon cup may either be directly attached thereto or attached through the medium of a suitably shaped nipple.

owing t the relationshipf the cone block 86 to the tip block 82. This self centering feature will be, manifest when the he'ad unit is directly attached to the air brush proper, as illustrated in Figs. 1, 2,12, 19 and 20,

The head unit is perfectly self centering '75* but a suitable extension unit may, if desired,

-be interposed #between the body` of the airl brush and-the head unit. In such case, theL selfcentering quality of the head unit parts will also bev manifest. v

The extension un-it may either be straight 4or curved, and either short or long as desired. In my co-Kpending application 4for Letters Patent` of vthe United States on air .brushes and the like, Serial No. 732,564, filed August 16, 1924, I have disclosed aconstruction of air brush in which provision is made for the use of one construction of head unit, and in said application I have also disclosed a construction of extension unit. The latter, when used, .serves to establish the liquid and-,air passages of the head unit. A

similar construction of extension unit may and length to threadA directly onto the lfront roperv continuity between the lliquid and air lpassages of thel body of the air brush witlthe' appliend of the body block 58, corresponding 1n this regard tothe linion nut 9.4 already referred to.f. lThe block 1 164 is externally threaded of size andsha e to receivev the L union nut 94 of the he'adumt 81.

Therear'block 1.11 of the extension is provided with' a .central passage- 122 which communicates directlywith the liquid supply passage 64 andlterminates in a valve seat 123 at the proper position and of proper taper land size to receive the frontend of the plunger 6'5. This valve seat 123 communii cates vwith the central tube 119, of the'extension unit, so that-the lli uid. is delivered directly into said/central tu e.-4 The rear block 117 is also provided with a series of passages 124 which communicate at their rear ends with the annular channel ris 80 ,of the body 58, and at their front ends they communicate with the spacel between the inner and outer tubes119 and 118, respectively.

The front block 116 is provided with a central passage 125 which rcommunicates with the tube 119; and is also provided with a series of passages 126 communicating with the space between the

tubes

119 and 118. u vThe block 116 is also provided with a forwardly facing annular channel 147 which communi cates with the passages 126 and into which the air is delivered. This channel 127 is of the same size as the channel 8O at the iront end of the bod block 58. l

From the ahbve it will appear that the head unit 81 may be set onto the front block 116 of the extension unit whereupon proper communication will be established with the air and liquid passages. The rear block lis itself so constructed that( it properly cjooperates with the plunger in order to control t the deliveryof liquid to the central passage of the extension unit.

While it is'evident that many standardl forms and sizes of multiple head may be used with a given air brush body, I wish to unit or one having a multiplicity of mention that in a given case there are pro vided five different sizes of head for use with a single given body, andeach of thesehead sizes 1s provided in .each 'of three styles, giving fifteen different heads, any one of which may be interchangeablyvused with a single Whilethe particular extension unit illus-4 trated is short and curved, nevertheless 1t will be evident that many other forms and shapes and sizes of extension unit may be use or that in some cases two ormore extension unitsmay be connected up in series with each other so as to produce a 've long l'bends In either case, however, it will be evident that the extension unit has at one end a terminal block or connection adapted `to co-o erate directlywith the plunger and with t e air passages of the b and is lprovided at its ont end with another bloc or connector i adapted to directly attach to the head unit so as to deliver the liquidand air properly thereto. i g

While I haverherein shown and described only certain embodiments of the features of my present' invention, still I do not intend to limit myselfrto the same, except as I may do so in the claims.

1./ An air brush comprising incombination a main cylindrical body member terminating at its front end in a conical seat, a front c lindrical bo'dy member in alignment with t e main body member 4and havin at its rear end a cmcalv socket to engage t e seat aforesaid while 'permitting relative rotation be-v aligned packing recesses in the adjacent ends of the two body members, a rearwardly reaching union nut on the front body mem tween these parts, lair passages in the main body member communicating with said chamber to deliver air thereto, a forwardly facing channel in the front end of the front body member, air passages in said body member establishing communication between the annular chamber and said channel for the delivery of air to the channel a head unit on the front end of the front bod member includinga central liquid orifice in lignment with the liquid passage of the frontV body member and also including a surrounding annular air orice'communicating with the forwardly facing channel, a longitudinally extending plunger reaching concentrically through both body members, and working in conjunction with the liquid orifice to seal and control the same,valve mechanism in the main body member for controlling the delivery of air through the device, and common operating means for said air valve and for the plunger, substantially as described.

2. Arr air brush comprising in combination main and front cylindrical body members placed .in axial alignment with each other, means for retaining said members in said alignment while permitting relative rotation between them, an axially extending liquid supply passage inthe front portion of the front bodyvmember together with a connec- 'tion for delivering liquid thereto, means for delivering air to the position of the front end of the front body member, an axially extending plunger reaching through both body members and through the liquid supply passage for controlling the delivery of liqu'id therethrough, there being companion axial socketsin the companion faces of the twol bod members, packing'rngs within one of sai sockets operative effectively to seal the plunger againstseepage while permitting easy movement of said plun er, and a spring pressed member in the soc et of the other ody member for com ressing said packing, substantially as descri d.

3. An air brush comprising in combination a body member having a forwardly extending annular liquid supply passage in its front portion, together with a forwardly facing annular airchannel inA its front face surrounding said passage, suitable connections for the delivery of liquid and air to said passage and said channel respectively, an axially extending plunger slidably mounted in. said body member and Working longitudinally through said liquid supply' passage, and means for shifting said plunger longitudinally and for controlling the supply ofv air to the channel, together with a head unit comprising a central cone block having a longitudinally extending liquid passage adapted toalign with the liquid supply passage of the body member and forming at its front end an -in- Wardly facing taperedplunger seat to receive the front end of the plunger, and also having a series of longitudinally extending ai passages adapted to communicate at theiil rear end with the air 'channel aforesaid, a flange on the rear end of the cone block, a union nut "freely engaging said flange and being of a size to permit lateral adjustment between the parts, said union nut threading onto the fro'nt end of the body member to retain the cone block thereon, While permitting said cone tblock to initially align with the plunger, a

circular head block rotatably mounted'on thecone block and having a central air passage` .surrounding the extremefront end of the cone and receiving air from theair passages in the cone, means for retaining the headv block on the cone While permitting rotation of the Jsame thereon, a pair of diametrically opposite crescent shaped orifices in the head block for the delivery of air against the air' delivered through the annular passage, passages in the head block for the delivery of air to said crescent shaped openings. and a valve in the head block for controlling the stantially as described. y

4. An air brush comprising in combination a body member having a forwardly vextending annular liquid supply passage 1n its delivery. of air through said passages, sub- Ufront portion, together with a forwardly facbody member and working, longitudinally,

ing annular air channel in its front face surrounding said passage, suitable connections for the delivery of liquid and air to said passage and said channel respectively, an axially extending plunger slidably mounted in said through said liquid supply passage, and means for shifting said plunger longitudinally and for controlling the supply of'air to the channel,` together with a head unit comprising a central cone block having a central liquid passage adapted to align with the liquidsupply passage of the body mem- -ber and forming'at its front end an inwardly facing taperedplunger seat to receive the front end of the plunger, and also having a series of longitudinally extending air passages adapted to communicate at their rear end with the air channel aforesaid. a flange on the rear end of the cone block, a union nut freely engaging said flange and being of a sizeto permit lateral adjustment between the parts,'said union nut threading onto the sages in the cone, and means for retaining the head block-on the cone while permitting4 rotation of the samethereon, substantially as described.

5. An air brush comprising in combination a body member havinga forwardly extending annular liquid supply passage in its front portion, suitable-connections for the delivery of liquid to said passage, an axially extending plunger slidably mounted in said body member and Working longitudinally through said liquid supply passage, and means for shifting said plunger longitudinally, together With a head unit comprising a central cone block having a central liquid passage adapted to. align with the liquid supply passage of,

the body member and forming at its front end an inwardly facing tapered plunger seat to receive the front end of the plunger, a flange on the rear end of the cone block, a union nut freely engaging said flange and being of a size to permit lateral adjustment between the parts, said union nutthreading onto the front end of the body member to retain the cone block thereon, while permitting said cone block to initially align with the plunger, a circular head block mounted on the cone block and having a central air passage` surrounding the extreme front end of the cone. and means for retaining the head block on the cone While permitting rotation of the same thereon, substantially as de-- scribed. i l

6. As a new article of manufacture, a head unit comprising in combination a cone block having a longitudinally extending through passage terminating in a tapered seat of reduced size at its outer end and having an outwardly projecting annular liange at its inner end and having a tapered conical outside surface, a union nut engaging the front face of said flange and projecting backwardly thereon, a circular body block seated upon the outer tapered conical fac of the cone block in air tight fashion 'and'l aving lat its front end an annular-through passagel surrounding the tip portion of the cone to establish a fine annular "airdelivery orifice concentric with the end ofthe through passage, there being a series of through passages in the cone -block for the delivery of air to said passage,

there being an annular forwardly; facing channel in the front face of the body block, there being a. pair of forwardly and inwardly extending crescent shaped recesses lin communication therewith, .a ring secured to the 'frontend of the body block to close over said channel, and means for delivering airunder Aun' 8` i l y d 1,777,650

having a longitudinally extending through 'passage terminating in a tapered seat o f reduced size at its outer end andl having a tagered conical outside surface, a circular body lock seatedupon the outer tapered conical face of the cone block in air tight'fashion and having at its front end lan annular through passage surrounding the tip portion of the cone to establish a fine annular air delivery orifice concentric with the end of the through passage, there being a series of through passages in the cone block for the delivery of air to said passage, there'being an annular forwardly facin channel in the front face of the body bloc there-being ay pair of forwardly and inwardlyextending' crescent shaped recesses in communication therewith, a ring secured to the front end f the-body block to close said channel and en lclose said crescent shaped recesses,and means for deliverinv air under control to said chanl nel, substantially as described.

8. As a new article of manufacturea head unit comprising in combination a cone block having a longitudinally extending through passage terminating in a tapered seat of reduced size at its outer end and having a tapered conical outside surface, a circular body lock seatedfuponthe outer tapered conical face of the cone block in air tight fashion and having at its' front end an annular through passage surrounding the tip portion ofthe cone to establish a line annulanair delivery oriice concentric with the end of the through passage, means for delivering air to said passage, there being an annular forwardly facing channel in the front face of the body'block,"there being a pair of forwardly and inwardly extending diametrically opposite recesses in communication therewith, a ring secured to the front end of the body block to close over said channel, and

means f or delivering air under control to said.

channel, substantially as despribed. p

9. As a new article of manufacture, a head unit comprising in combination a stationary cone block having a central through passage terminating at its outer end in a plunger seat,

.a body block rotatably and concentrically mounted lthereon, means for retaining these parts in position whilepermitting suchrela'-d tive rotation, there being a through annular orifice in the rotatable member concentric with the plunger seat aforesaid, means for delivering airto said annular orifice for any rotated positionof the outer member to insure delivery of a central `cone of-air through said orifice, there being a pair of forwardly and inwardly extending crescent shaped orifices diametricall opposite to each other in the front face o the outer member Ifor the lblock, and means channel,lthere being a pair of diametrically opposite crescent shaped recessesin the head ancedy and distributed" fan shaped brush of air, substantially as described.

l0. As a new article of manufacture, a head unit having 'a central liquid delivery orifice and an annular concentric fine air supply orifice to deliver a central cone 'shaped air jet,

there being a pair of diametrically opposite forwardly and inwardly extending crescent shaped air 'supply orifices at opposite sidesL 85 of the annular orifice aforesaid, said crescent shaped orifices having their concave portions facing away from the axial center of the device, together with means for controlling the delivery of air tothe crescent shaped orifice independent of the annular orifice, the air jets delivered through' the crescent shaped side orifices impinging against the sidesy of the central cone of air to produce a balanced fan of air, substantially as described.

l1. As a new article of manufacture, a head unit including a block having a central liquid supply orifice together-with'a concentric annulaiair supp y orifice for the delivery of a central cone of air around the liquid supply orifice, there being a pair of diametrically opposite inwardly and forwardly extending crescent shaped orifices for air at opposite sides of the annular air supply orifice,

said crescent shaped orices having their concave portions facing away from the axial center of the device, the air delivered from said head unitincluding a circular headblock having a central annular through air supply vorifice for the delivery of a central cone of air,,there being a forwardly facing annular channel around the eripheral portion of said fnl delivering air to .said

block extending inwardly and. forwardly fromsaid channel tow'ards the annular orifice aforesaid, together with a ring-on the head block sealing over the front portion of the annular channel and the front portion of the crescent shaped notches aforesaid, sub1l stantially as described.

ias

13. An air brush including in combinationl a body member having at its rear end a longitudinally movable poppet valve for the control of air and having at its front end a longitudinally movable plunger for the control of liquid, a trigger having its upper end pivotally connected to the bodmember and provided with a rearward y facing V-shaped 5 socket at a position below the pivotal mounting aforesaid, a. link havin its front end" within said socket, a ball an` socket connection between the rear end of the link and the air valve,.an annular flange on the plunger, v M a bifurcated hook engaging the front iace'l of said flange at the lsi es of the plunger, and a pivotal Iconnection between said hook and the trigger, substantiallg' as described.

- JEN A. PAASCHE;