US3116882A

US3116882A - Turret-nozzle for paint spray guns

Info

Publication number: US3116882A
Application number: US168758A
Authority: US
Inventors: William D Vork
Original assignee: GRAY Co Inc
Current assignee: GRAY Co Inc; GRAY COMPANY Inc
Priority date: 1962-01-25
Filing date: 1962-01-25
Publication date: 1964-01-07
Anticipated expiration: 1981-01-07

Description

Jan. 7, 1964 w. D. VORK 3,116,882

TURRET-NOZZLE FOR PAINT SPRAY GUNS Filed Jan. 25, 1962 s Sheets-Sheet 2 Fig. 3.

A? .62 WILL/AM D. VORK ,5 46 AT T OLiWEYZ Jan. 7, 1964 w. D. VORK 3, 16,882.

TURRET-NOZZLE FOR PAINT SPRAY GUNS Filed Jan. 25, 1962 3 Sheets-Sheet 3 %x if Fig.6

United States Patent Ser. No. 163,758 15 Claims.

The present invention relates to a new and useful turretnozzle construction for paint spraying guns and the like, as generally used for the spray-application or spray-coating of mastics, paints, lacquers, enamels, varnishes and any other liquids to be spray-coated onto various surfaces.

The turret-nozzles of the present invention are particularly adapted for use with or on airless spray-guns whereby paints or other surface-coating liquids and mastics are dispersed or formed into a suitable spray without any accompanying compressed air, steam or the like, and in which such paints or other surface-coating liquid or mastic are forced through the liquid-discharging orifice or spray tip under a pressure usually substantially higher than the liquid-pressure used in spray-guns in which the liquid being sprayed is accompanied by a simultaneously discharging supply of atomizing compressed air or steam.

One of the objects of the present invention is to permit the periodic reversal of the fiow of the spray-coating liquid or mastic through the spray-orifice for cleaning it of any accumulation of the solid content of such liquid or mastic which may tend to clog the orifice, as, for instance, the asbestos or other fibrous material which forms a part of spray-applied underbody-coating materials, sounddeadening materials, roofing materials, water-proofing and other protective coating materials.

Another object of the present invention is to provide a plurality of differently sized or shaped spray-orifices or tips within the same nozzle and to permit either one of such tips to be rotated into an operative position while the other tip is at the same time rotated into an inoperative position.

With the above and other objects in view, which will appear from the following detailed description, the present invention comprises a nozzle turret having a turret member revolvably mounted in a generally tubular turrethousing and having a fluid passageway therethrough and a spray-tip mounted in said passageway, spaced-apart bearing and sefling rings for the turret-member, and handle means in the housing for rotating the turretmember.

In another aspect, the present invention comprises a plurality of spray-tips carried by the same turret-member with the axis of the spray-tips at an angle to each other.

The present invention further comprises a novel construction in such turret-nozzles, achieving reliability and durability under high fluid-pressures and with liquids and mastics having a solids content (such as pigments, fibers or the like).

In the accompanying drawings, in which like reference characters indicate like parts,

FEGURE 1 represents a perspective view of a turretnozzle of the present invention.

FIGURE 2 represents a cross-sectional view, on an enlarged scale, of an embodiment of the present invention, on a plane in which both the axis of the housing as well as the axis of the turret-turning shaft lie.

FIGURE 3 represents a similar cross-sectional view or" a modified embodiment of the present invention.

FIGURE 4 represents a side-elevational view of the turret-nozzle of the present invention.

FIGURE 5 represents a cross-sectional view, on line 5--5 of FIGURE 6, of a multi-tip embodiment of the turret-nozzle shown in FIGURES 3 and 4, on a plane at a right angle to the axis of rotation of the turret-member; with portions broken away.

FIGURE 6 represents a cross-sectional view, generally on line 6-6 of FIGURE 5 of the embodiment shown in FIGURE 5, with portions broken away (the omitted portions being the same as in FIG. 3).

FIGURE 7 represents a fragmentary cross-sectional View of the turret-nozzle of FlGURE 3, showing a modified embodiment thereof; with portions omitted (the omitted portions being the same as in FIGURE 3).

FIGURE 8 is a view of a spherical turret member shown in FIGURES 5 and 6; however, with surrounding structure omitted.

The nozzle construction of the present invention, embodiments of which are shown in the accompanying drawings, is generally adapted to be attached to any conventional airless paintspray-gun designated by the letter G, in FIGURE 1; the front end 11 of which gun is externally screw-threaded as indicated in FIGURES 1 and 2, and is adapted to receive the correspondingly screwthreaded coupling-collar 12, whose inturned flange 13 overlaps and interlockingly engages the annular collar 14 on the base of the generally tubular turret-housing 15, so that by screw-threading the coupling-collar 12 onto the threaded front-end 11 of the spray-gun (G) the turrethousing 15 is firmly secured to the gun.

Any suitable annular sealing gasket (not shown) is provided between the rear base-end or inlet-end of the turret-housing 15 and the front end 11 of the spray-gun (G) or between the latter and the flange 16 of the tubular screw-plug 19 which is tightly threaded into the rear end of the turret-housing 15.

The turret-housing 15 is provided with a cylindrical bore 17, and has its base end internally threaded as at 18, for the reception of a correspondingly threaded tubular plug 19, which hoids the spherical turret-member 20 its juxtaposed (front and rear) bearing-and-sealing rings in assembled and operative relation to each other.

The outer or discharge end of the turret-housing 15 is provided with an inwardly extending flange 21 for retaining the outer turret-bearing rings 22 or 23 (FIG- UR-E-S 2 and 3). A shaft-housing 24 extends laterally from the turret-housing 15, near the front-end of the turret-housing. The shaft-housing 24 may be formed integrally with or welded to or otherwise afiixed to the turret-housing 15. In the embodiment shown in FIG- URE 3, a shallow cylindrical bore or socket-like recess 25 is provided in the side of the turret-housing 15, in which the reduced-diametered portion 26 of the shafthousing 24 is nested and secured therein by a brazing, silver-soldering or by other suitable welding or fusion means (or by other suitable means).

T he turret-member Ztl may be formed of suitable steel and is provided with an outer spherical surface 27, and, in effect, the turret-member 26B is a truncated sphere.

A passageway 23 is provided through the spherical turret-member Ell as shown in FIGURE 2, and a similar passageway 12% is provided in the embodiment shown in FIGURE 3 which connects with the enlarged socket 39 in which the spray-tip 29 is set, and the sphere 20 is truncated or cut off where the passageway 28 and socket 3 intersect the sphere, as indicated in FIGURES 2 and 3.

Within the passageway 28 the orifice-member 29 or spray-tip is mounted, with its outermost portion or discharge end 36 lying within the spherical orbit through which the spherical surface 27 of the turret-member 20 travels as it is turned within the turret-housing 15; the dotted lines 31 in FIGURES 2 and 3 (and in FIGURES 5 and 6) representing the extension of the spherical surface and also the spherical orbit of the aforementioned travel.

The orifice-member 29 or spray-tip may be provided with any suitably shaped and sized orifice 32.

In the embodiment shown in FIGURE 2 the orificemember or spray-tip 29 is removably mounted in the spherical turret-member 2%. In this embodiment the enlarged base 33 of the spray-tip 29 is firmly clamped between a nylon or Teflon sealing-ring 34 and the tubular screw-plug 35 which is screw-threaded into the internally threaded portion 36 of the passageway 23. In this embodiment the passageway 23 includes an inwardly inclined conical surface 37 corresponding generally to the conical bearing-surface 33 of the base portion 33 of the spray-tip '29, thereby to give support for the fluid-tight clamping of the base 33 of the spray-tip 29 between the sealing-ring 34 and the front-end of the tubular screw-plug .35. The bore of the screw-plug 35 is preferably provided with a hexagonal or other polygonal portion 43, at its outer end, whereby the screw-plug may be operatively engaged by means of a conventional Allen wrench.

In the embodiment shown in FIGURE 3, the spray-tip 29 is telescoped into the enlarged outer cylindr'ical bore or socket 39 into which the outer end of the passageway 28 extends; the shoulder 4b forming the bottom of the socket 39. The spray-tip 29 is secured in the socket 39 by means of brazing or silver-soldering it in place.

The spherical turret-member 2t? is revolvably and sealingly mounted between opposed front and rear bearing members. In the embodiment shown in FIGURE 2, the outer bearing member 22 as well the inner bearing member 41, are nylon or Teflon rings having spherical bearing and sealing surfaces 42, which bear against the spherical surface 27 of the turret-member Ztl, and are held in sealing engagement therewith by the screw-plug 19, as indicated in FIGURE 2.

In the embodiment shown in FIGURE 3, the outer bearing member 23 is an annular carbide ring, press-fitted or otherwise suitably secured in the bore portion 44 of the turret-housing 15, or it may be held therein merely by the pressure exerted against it by the spherical turretmember 20. The carbide bearing member 23 is provided with a spherical bearing surface 45 against which the spherical surface 27 of the turret-member Ell bears. The rear bearing members 46 is an annular nylon or Telfion ring having a spherical bearing surface 47, and having its outer cylindrical surface 48 nested within and bearing against the inner cylindrical 17 of the turret-housing.

In the embodiment shown in FIGURE 3, an O-ring is operatively disposed between the conical surface 59 and the fiat annular terminal surface 51 of the tubular screwplug 19 and the inner cylindrical bore 17 of the turrethousing I and the flat annular rear surface of the rear bearing-ring 4-5, to form and maintain a fluid-tight seal between the inner end of the scrcw-plug I9 and the inner bore 17 of the turret-housing I5 and the rear bearingmember 56.

The spherical bearing-surface 47 of the rear bearingmember 4-6 in turn forms a fluid-tight seal with the spherical surface 2'7 of the turret-member Zil. Any fluid which may leak past either of the last two mentioned fluid-seals, and so enters the interior of the turret-housing IS (on the outside of the spherical surface 27 of the turret-rnernher will ultimately be sealed off by the spherical bearing surface 4-5 of the outer bearing-ring 23, where such spherical surface bears against the spherical surface 27 of the turret-member 2.0.

A shaft-receiving recess or soclret 53 is formed in the turret-member 269 at a right angle to the axis of the spraytip 29 carried thereby, and coaxial with the axis of rotation of the turret-member 2% The shaft-socket 53 is preferably square or other polygonal shaped, so that it will interlock or key with the correspondingly shaped terminal portion 54 of the shaft 55. The socket 53 may be first drilled and then broached to a square or other polygonal shape. The terminal portion 54 of the shaft 55 and the socket 53 may also be cylindrical, and the shaft-portion 54 may be secured in the socket 53 by silver-soldering or other suitable fusion means. In the embodiment shown in FIGURE 3, a through hole 53, of suitable polygonal cross-section, is formed through both sides of the spherical turret-memher 2%, and the unused end of such through-hole is thereafter plugged by means of a suitable plug 56 silver-soldered or otherwise affixed therein, as indicated in FIG.- URE 3. v

In the embodiment shown in FIGURE 2 the shaft SSis journalled and sealed within a plurality of nylon rings 57 mounted within the cylindrical bore 55; of the shaft-housing 2-iand axially compressed therein between the

metallic rings

59 and 6% by the screw-cap 61 which is screw threads dy secured to the externally screw-threaded outer terminal portion of the shaft-housing .24. To the outer end of the shaft 55 a handle 62 may be pivotally secured,- about a pivot 63, so that the handle may be swung either forwardly of rearwardly, as indicated in FIGURE 1.

In the embodiment shown in FIGURE 3, the shaft 55 is journalled within the cylindrical bore 64 formed through the wall of the turret-housing 1S and the shaft-housing 24, and the bore 65 formed in the tubular screw-plug 66 which serves to compress the sealing-member 69 within the bore 53 of the shaft-housing 24.

In the embodiment shown in FIGURE 3, the shaft 55 is provided with an annular collar 67. The collar 67 is flanked by similar nylon washers 63. An G-ring 69 is operatively disposed between the inner nylon washer 68 and the inner flat annular surface at the inner end of the bore 58 of the shaft-housing 24, to form a fiuid t-ight seal between the shaft 55 and the shaft-housing M. When the tubular screw-plug 65 is screwed into the shaft-hous ing 24 so that its outer flange 7d bears against the outer end of the shaft-housing 24, it will provide just sufficient space of the O-ring 69 to cause it to form the fluid-tight pressure-retaining seal.

The shaft 55 is provided with an outer reduced-diametered portion '71 on which the hub portion 72 of the handle 73 is mounted, and held in place by a cap-nut 74 threaded onto the further reduced outer threaded portion '75 of the shaft 55.

The hub 72 of the handle '73 is formed as a cap, with a portion of the flange thereof cut away so as to form two opposite shoulders '76, approximately 180 apart. The shaft-housing is provided with an outwardly extending abutment or stop-member 77, which is engaged by one of the two opposite stop-shoulders '76, so as to position the turrebmember 2 in either one of its two opposite positions, namely, in the position shown in FIGURE 3 which the axis of the passageway 23 and socket 39 and the spray-tip 29 will be co-axial with the nozzle-housing 15 while the spray-tip 29 faces forwardly as in FIGURE 3, and in the opposite position wherein the spray-tip faces rearwardly for as when it is desired to clean it by flowing spray-liquid through the orifice thereof in a reverse direction.

In the multi-tip embodiment shown in FIGURES 5 and 6, a plurality of passageways 28- 1 and 28-h are formed in the turret-member 265 at an angle to each other, as, for instance, at At the outer ends of the passage- W21 s 23a and 28-1; spray-tips ZI -a and ZELb are mounted in corresponding sockets 39a and 39-b and secured therein by silver-soldering or the like.

The passageways 2841 and 23-b are preferably formed at oppositely inclined angles to the axis of the sockets 39a and 39-1) so that the passageways 28-61 and 2842 do not intersect each other, and so that the spray-tip in the inoperative position is not in communication with the fluid in the operatively positioned spray-tip.

By turning the turret-member 2-0, either of the two spray-tips 29-a and 2-b may be brought into an operatin or spraying position while the other spray-tip is placed into an inoperative position as shown in FIGURE 5. By further turning the turret-member Ztl, either of the two spray-tips 2a and 29-b can be faced rearwardly or upstream, so as to cause the fluid to flow therethrough in a reverse direction, thereby to clean out the orifice thereof.

In the multi-tip embodiment shown in FIGURES 5 and 6, the stop-projection would be omitted, if reverseflow cleaning of both spray-orifices is desired, so as to permit the full 360 turning of the turret 29 for positioning each of the spray-tips 2a and 294) in its operative or spraying position and also in its reverse-flow cleaning position. Instead, the flange of the cup-like hub 72 is provided with a pointer or a detent or latch and the shafthousing 24 is provided with markings or detent-receiving or latch-receiving notches or recesses corresponding to the operative and inoperative and reverse-flow positions of the several spray-tips.

Instead of disposing the two passageways 23-a and 28-!) in the multi-tip embodiment of the invention so that they pass each other without intersecting or communicating with each other, as indicated in FIGURES 5 and 6, the passageways 28-0. and 23-12 may be disposed so as to intersect each other. If intersectingly disposed, then the liquid will be maintained under pressure in the annular chamber or space 77 between the inner wall 17 of the turret-housing 15 and the outer spherical surface 27 of the turret-member 23 (between the two-Spaced-apart bearing-rings 23 and 46).

If the plurality of passageways 28-51 and 28-5 is disposed in non-intersecting and non-communicating relation to each other, as indicated in FIGURES 5 and 6, then the liquid under pressure is not delivered into the aforementioned space '78, because the receiving or inlet end of the passageway of the spray-tip which is in its inoperative position faces into the aforementioned annular space 78 between the housing 15 and turret 29.

In the embodiments shown in the drawings, the rear bearing-and-sealing ring (41 and 46) also serves as valving means in conjunction with the inlet end of the passageway (23, ZS-a or 28b). Thus, as the turret-member 2G is rotated, the inlet-end of the passageway (28, 23a and 28-17) can be moved into and out of registration or communication with the hole through the rear bearing-andsealing rin (41 or 46) and hence with the supplypassageway through the tubular screw-plug 19 or with the supply-inlet of the turret-housing 15.

By narrowing the annular spherical bearing surfaces 45 and 47, as indicated in FIGURES 3, 5 and 6, a high pressure per unit of contact-area is obtained between such bearing surfaces (45 and 47) and the contacted portions of the spherical surface 27 of the turret member 2t), for any given pressure of the liquid.

By forming the front bearing-ring of metal (as in the embodiments shown in FIGURES 3, 5 and 6) and inter posing a suitably resilient 0-ring 52 between it and the rear bearing-ring 46, the axis of rotation of the turretmember 29 is maintained constant and immovable, and the bearing pressure between the spherical bearing surfaces 45 and 47, on the one hand, and the spherical surface 27 of the turret-member 29, on the other hand, can be so maintained as never to lock or freeze the spherical member 2% between its front and rear bearing rings.

Thus, the rear flange 16 of the tubular screw-plug 19 is so spaced from the flat annular surface 51 thereof that when the flange 16 bears against the rear end of the nozzle-housing 15, the distance between the flat annular end-surface 51 of the screw-plug and the rear flat annular surface of the rear bearing ring 45 will be just sufliciently less than the diameter of the original circular cross-section of the G-ring 52 to cause the O-ring 52 to be compressed just sufiiciently to effect a fluid-tight sealin the manner aforementioned, and without the end of the lead portion 9 of the screw-plug touching the bearing ring 46. By this construction, the maximum tightening of the screwplug 19 in the turret-housing 15 cannot jam, lock or bearing-rings 23 and 4-6. The pressure of the fluid passing through the rear bearing-ring 46 urges the rear bearingring 46 against the turret-member 20 and urges the latter outwardly towards the front bearing ring 23, and hence the pressure of the liquid tends to maintain a fluid-seal between the annular spherical bearing surfaces 47 and 45 and the contiguous portions of the spherical surface 27 of the turret 29.

By maintaining the axis of rotation of the turret 2t constant (in the manner stated above) misalignment between the axis of rotation of the turret 2t and the axis of rotation of the shaft 55 is prevented.

Two spray-tips 29 may be mounted in the same turretpassageway 23, as indicated in FIGURE 7; so that by turning the turret-member not only is the theretofore used tip 29 directed rearwardly or upstream so as to be cleaned or flushed out by the reverse-flow of the liquid therethrough, but at the same time a fresh and clean tip is brought into the forward operating position so that there need be no significant interruption of the spraying operation. Thus, whenever the forwardly directed spray-tip 29 becomes clogged as a result of continued spraying therethrough, the turret-member 2i) is turned 180 and the spraying continued through the other spray-tip 29 which had been in the rear and facing upstream and which has been brought into the forward operating position by such 180 turn of the turret-member 20 Having shown and described embodiments of the invention, I claim the following:

1. A turret-nozzle for the spray-application of paints, lacquers, enamels, varnishes and other surface-coating liquids, including a generally tubular turret-housing, a pair of opposed annular bearing-rings within said turrethousing, a turret-member within said turret-housing revolvably mounted between said two bearing-rings for rotation about an axis at a right angle to the axis of the turret-housing, said annular bearing-rings and said turret member being so arranged in relation to each other and the turret-housing that the pressure of the fluid will tend to maintain a fluid-seal against the pressure of the fluid between said bearing-rings and said turret-member, a passageway extending through said turret-member transversely of its axis of rotation, a spray-tip mounted in said turret-member with its spray-orifice facing radially outwardly of said turret-member and with its axis generally at a right angle to the axis of rotation of the turretmember and having its spray-orifice in communication with said passageway, a shaft-housing extending laterally from the turret-housing, a shaft revolvably and sealingly mounted in said shaft-housing and having the inner end thereof extending into the turret-housing and in interlocking engagement with the turret-member so that the rotation of the shaft will correspondingly rotate the turretmember, said shaft being coaxial with the axis of rotation of said turret-member, and means at the outer end of said shaft for the manual engagement thereof for the turning of the shaft and the turret-member.

2. A turret-nozzle for the spray-application of paints, lacquers, enamels, varnishes and other surface-coating liquids, including a generally tubular turret-housing having a supply-inlet, two spaced-apart bearing-annuli within said turret-housing, a turret-member within said turrethousing revolvably mounted between said two bearin annuli for rotation about an axis transversely of the axis of the turret-housing, said bearing-annuli and said turretmember being so arranged in relation to each other and the turret-housing that the pressure of the fluid will tend to maintain a fluid-seal against the pressure of the fluid between said bearing-annuli and said turret-member, a passageway extending through said turret-member transversely of its axis of rotation, a sprayip sealingly mounted in said turret-member with its spray-orifice facing radially outwardly of said turret-member and with its axis disposed transversely of the axis of rotation of the turret-member and having its spray-orifice in constant communication with said turret-passagewa one of said bearing-annuli and the inlet-end of said turret-passageway constituting valving means between the supply-inlet of the turret-housing and the spray-tip in communication with said turret-passageway, a shaft-housing extending laterally from the turret-housing, a shaft revolvably and sealingly mounted in said shaft-housing and having the inner end thereof extending into the turret-housing and interlocking engagement with the turret-member so that the rotation of the shaft will correspondingly rotate the turret-member, said shaft being coaxial with the axis of rotation of said turret-member, and means at the outer end of said shaft for the manual engagement thereof for the turning of the shaft and the turret-member.

I 3. A turret-nozzle for the spray-application of paints, lacquers, enamels, varnishes and other surface-coating liquids, including a generally tubular turret-housing having a supply-inlet at its rear end, an inwardly facing annular spherical bearing surface in the front end zone of said turret-housing, a rear bearing-ring movably mounted within said turret-housing and having forwardly facing spherical bearing surface, a spherical turret-member within said turret-housing revolvably mounted between said two spherical bearing-surfaces for rotation about an axis transversely of the axis of the bore of the turret-housing, said annular spherical bearing-surfaces and said spherical turret-member being so arranged in relation to each other and the turret-housing that the pressure of the fluid will tend to maintain a fluid-seal against the pressure of the fluid between said bearing-surfaces and said turret-memher, a passageway extending through said turret-member transversely of its axis of rotation, a spray-tip mounted in said turret-member with its spray-orifice facing radially outwardly of said turret-member and with its axis disposed transversely of the axis of rotation of the turretmember and having its spray-orifice in constant communication with said turret-passageway, a shaft-housing extending laterally from the turret-housing, a shaft revolvably and sealingly mounted in said shaft-housing and having the inner end thereof extending into the turret-housing and in interlocking engagement with the turret-member so that the rotation of the shaft will correspondingly rotate the turret-member, said shaft being coaxial with the axis of rotation of said turret-member, and means at the outer end of said shaft for the manual engagement thereof for the turning of the shaft and the turret-memher.

4. A turret-nozzle according to claim 3, in which the rear bearing-ring and the inlet-end of the turret-passageway constitute valving means between the supply-inlet of the turret-housing and the spray-tip.

5, A turret-nozzle according to claim 3, including resilient sealing means between the bore of the turrethousing and the rear bearing-ring, resiliently urging said bearing-ring into contact with the turret-member and the latter into contact with the front bearing surface.

6. A turret-nozzle for the spray-application of paints, lacquers, enamels, varnishes and other surface-coating liquids, incluning a generally tubular turret-housing, a shaft-housing extending laterally therefrom in fixed relation thereto, a shaf-opening extending from said shafthousing into said turret-housing, an inwardly facing annular bearing surface in the front end zone of said turrethousing and generally coaxial therewith, said annular bearing surface being a portion of a sphere, a rear hearing ring movably mounted within said turret-housing and coaxial therewith and having a forwardly facing annular bearing surface which is a part of a sphere of the same radius as that of the spherical bearing surface in the front of the turret-housing, a spherical turret-member operatively mounted between said two annular spherical hearing surfaces, means urging said rear bearing-ring forwardly against said turret-member and urging the latter forwardly against the aforementioned front annular spherical bearing surface and forming a fluid-seal bety ee the inner surface of said turret-housing and said rear bearing-ring, said ring-urging means, said rear bearing-ring, turret-member and front annular bearing surface being so arranged as to cause the pressure of the liquid to urge said rear bearing-ring into be ring and sealing contact with the spherical surface of said turret-member and to urge the latter into bearing and sealing contact with said front bearing surface, the radius of the spherical surface of said turret member being substantially the same as the radii of said two annular spherical bearing surfaces, a shaft revolvably and sealingly mounted in said shaft-housing and having the inner end thereof extending into said turret-housing and drivingly interconnected with said spherical turret-member and fixing the axis of rotation of the latter the same as that of the shaft, a passageway extending through said spherical turret-member transversely of its aforementioned axis of rotation, at spray-orifice member rigidly mounted in said turret-member with the outermost orifice end thereof Within the extension of the outer spherical surface of said turret-member and facing outwardly thereof and sealed in said turretmember and having its orifice in communication with said passageway so that liquid entering the opposite end of said passageway must pass through the orifice of said orifice-member, and means at the outer end of said shaft for permitting the manual rotation thereof and the consequent rotation of said turret member so as optionally to face the orifice-member carried by said turret-memher in a forward operative direction or in a rearward flush-cleaning direction or in any direction therebetween.

7. A turret-nozz e according to claim 6, in which the ring-urging means is resilient.

8. A turret-nozzle for the spray-application of paints, lacquers, enamels, varnishes and other surface-coating liquids, including a generally tubular turret-housing having a supply-inlet, a shaft-housing extending laterally therefrom in fixed relation thereto, a shaft-opening extending from said shaft-housing into said turret-housing, an annular bearing-ring in the front end zone of said turret-housing and generally coaxial therewith and having an inwardly facing spherical bearing surface, a rear bearing-ring movably mounted within said turret-housing and coaxial therewith and having a forwardly facing spherical bearing surface of the same radius as that of the spherical bearing surface of said front bearing-ring, a spherical turret-member operatively mounted between the spherical bearing surfaces of said two bearing-rings, resilient sealing means urging said rear bearing-ring forwardly against said turret-member and urging the latter forwardly against the front bearing-ring and forming a fluid seal between the inner surface of said turret-housing and said rear bearing-ring, said resilient sealing means, said rear bearing-ring, and said turret-member and front bearing-ring being so arranged as to cause the pressure of the liquid to urge said rear bearing-ring into bearing and sealing contact with the spherical surface of said turretmember and to urge the latter into bearing and sealing contact with said front bearingring, the radius of the spherical surface of said turret member being substantially the same as the radii of the spherical bearing surfaces of said two bearing-rings, a shaft revolvably and sealingly mounted in said shaft-housing and having the inner end thereof extending into said turret-housing and drivingly interconnected with said spherical turretmemher and fixing the axis of rotation of the latter the same as that of the shaft, a passageway extending through said spherical turret-member transversely of its aforementioned axis of rotation, a spray-orifice member rigidly mounted in said turret-member with the outermost orifice end thereof within the extension of the outer spherical surface of said turret-member and facing outwardly thereof and sealed in said turret-member and having its orifice in communication with said passageway so that liquid entering the opposite end of said passageway must pass through the orifice of said orifice-member, and means at the outer end of said shaft for permitting the manual rotation thereof and the consequent rotation of said turret member so as optionally to face the orifice-member carried by said turret-member in a forward operative direction or in a remward flush-cleaning direction or in any direction therebetween.

9. A turret-nozzle according to claim 8, in which the rear bearing-ring and the inlet-end of the turret-passageway constitute valving means between the supply-inlet of the turret-housing and the spray-orifice member.

10. A turret-nozzle for the spray-application of paints, lacquers, enamels, varnishes and other surface-coating liquids, including a generally tubular turret-housing having a supply-inlet, two spaced-apart bearing-annuli within said turret-housing, a turret-member within said turret-housing revolvably mounted between said two bearingannuli for rotation about an axis transversely of the axis of the turret-housing, said bearing-annuli and said turretmember being so arranged in relation to each other and the turret-housing that the pressure of the fluid will tend to maintain a fluid-seal against the pressure of the fluid between said bearing-annuli and said turret-member, a passageway extending through said turret-member transversely of its axis of rotation, a plurality of spaced-apart spray-tips sealingly mounted in said turret-member with their respective spray-orifices facing outwardly of said turret-member and with their axes disposed transversely of the axis of rotation of the turret-member and having their spray-orifices in constant communication with said turret-passageway, the spacing between said spray-tips being such that when one is faced operatively outwardly another is faced inoperatively inwardly of said turrethousing, a shaft-housing extending later-ally from the turret-housing, a shaft revolvably and sealingly mounted in said shaft-housing and having the inner end thereof extending into the turret-housing and in interlocking engagement with the turret-member so that the rotation of the shaft will correspondingly rotate the turret-member, said shaft being coaxial with the axis of rotation of said turret-member, and means at the outer end of said shaft for the manual engagement thereof for the turning of the shaft and the turret-member.

11. A turret-nozzle according to claim 10, having a plurality of non-communicating passageways extending through the turret-member, one for each spray-tip, and in which the inlet-ends of such turret-passageways are so spaced from each other that when one of said inlet-ends is in communication with the supply-inlet of the turrethousing the other of said inlet-ends is not in communication with the supply-inlet of the turret-housing.

12. A turret-nozzle according to claim 11, in which one of the bearing-annuli and the inlet-ends of said turretpassageways constitute selective valving means between the supply-inlet of the turret-housing and the several spray-tips.

13. A turret-nozzle according to claim 3, in which the front bearing surface is formed on a bearing-ring mounted in the front end zone of the turret-housing.

14. A turret-nozzle according to claim 13, in which the front bearing-ring is formed of tungsten carbide.

15. A turret-nozzle according to claim 3, in which the rear bearing-ring is formed of a relatively hard and inert non-metallic material.

References Cited in the file of this patent UNITED STATES PATENTS 949,489 Mastin Feb. 15, 1910 2,532,211 Welch Nov. 28, 1950 FOREIGN PATENTS 155,216 Germany Dec. 10, 1938

Claims

1. A TURRET-NOZZLE FOR THE SPRAY-APPLICATION OF PAINTS, LACQUERS, ENAMELS, VARNISHES AND OTHER SURFACE-COATING LIQUIDS, INCLUDING A GENERALLY TUBULAR TURRET-HOUSING, A PAIR OF OPPOSED ANNULAR BEARING-RINGS WITHIN SAID TURRETHOUSING, A TURRET-MEMBER WITHIN SAID TURRET-HOUSING REVOLVABLY MOUNTED BETWEEN SAID TWO BEARING-RINGS FOR ROTATION ABOUT AN AXIS AT A RIGHT ANGLE TO THE AXIS OF THE TURRET-HOUSING, SAID ANNULAR BEARING-RINGS AND SAID TURRETMEMBER BEING SO ARRANGED IN RELATIONTO EACH OTHER AND THE TURRET-HOUSING THAT THE PRESSURE OF THE FLUID WILL TEND TO MAINTAIN A FLUID-SEAL AGAINST THE PRESSURE OF THE FLUID BETWEEN SAID BEARING-RINGS AND SAID TURRET-MEMBER, A PASSAGEWAY EXTENDING THROUGH SAID TURRET-MEMBER TRANSVERSELY OF TIS AXIS OF ROTATION, A SPRAY-TIP MOUNTED IN SAID TURRET-MEMBER WITH ITS SPRAY-ORIFICE FACING RADIALLY OUTWARDLY OF SAID TURRET-MEMBER AND WITH ITS AXIS GENERALLY AT A RIGHT ANGLE TO THE AXIS OF ROTATION OF THE TURRETMEMBER AND HAVING ITS SPRAY-ORIFICE IN COMMUNICATION WITH SAID PASSAGEWAY, A SHAFT-HOUSING EXTENDING LATERALLY FROM THE TURRET-HOUSING, A SHAFT REVOLVABLY AND SEALINGLY MOUNTED IN SAID SHAFT-HOUSING AND HAVING THE INNER END THEREOF EXTENDING INTO THE TURRET-HOUSING AND IN INTERLOCKING ENGAGEMENT WITH THE TURRET-MEMBER SO THAT THE ROTATION OF THE SHAFT WILL CORRESPONDINGLY ROTATE THE TURRETMEMBER, SAID SHAFT BEING COAXIAL WITH THE AXIS OF ROTATION OF SAID TURRET-MEMBER, AND MEANS AT THE OUTER END OF SAID SHAFT FOR THE MANUAL ENGAGEMENT THEREOF FOR THE TURNING OF THE SHAFT AND THE TURRET-MEMBER.