US2648569A - Liquid sprayer - Google Patents

Description

Aug. 11, 1953 E W VQSE 2,648,569

LIQUID SPRAYER Filed June 24, 194'?` 2 Sheets-Sheet l INVENTOR ATTORNEYS E. W. VOSE LIQUID SPRAYER Aug. l1, 1953 2 Sheets-Sheet 2 Filed June 24, 1947 INVENTOR E50/uw /1/ Wwf WM r ATTORNEYS Patented Aug. 11, 1953 UNITED] STATE OFFICE LIQUID SPRAYER Edwin W. Vose, Orange, N. J., assigner to Sprayy Process Co. Inc. a corporation of New York.

4 Claims.

'This invention relatesto liquid' sprayers and has for' an objectvthe provision of a liquid sprayer in which the liquid to besprayed is delivered to'- the gun via a flexible tube passing' through the handle of the sprayer and in which is releasable spring load lever on the handle pinches the exible tube and cuts off thev supply of liquid'l tothe gun.

Another` object of the invention is the provision of a spray gun of the' character described wherein the spray nozzle of the gunis remote from the operator.

A further object of theI invention is to provide manually operated liquid controlmeans that willcompletelyl close against the flowoi liquids which arel impregnated with fibrous and/or granular materials.

In building construction, and particularly in partially or pre-fabricated buildings, the

iloors may be formed of a composition whichy requires several days tol set suiiiciently to be walked upon. According tol the' present invention' the walls and ceilings of such structure may be painted from outsideof the building, Via thewindows, doors, or other openings therein Without the necessity of constructing any scaffolding.

Accordingto the presentY invention my' new and improved spray gun is made sectional so' that extensions may ben inserted between the portion of the gun to which the handle is attached, and the end portion of the gunA whichcarries the business end of the sprayer; In one such arrangement a straight tube is insertedl between the handle portion and the nozzle portion of theV gun. In another form the inserted` portion may be bent so that the axis of one part of it is angular with respect to the` axis of the other part of it'. For example,r an angl of 30 has been' found to beY convenient.

Another" form of the invention contemplates the provisionv of a pipe between the handle portion of the gun and theA nozzlel portion` of the gun which is bent through an angle of as much as 90. These inserted' sections of the spray' gun may be' of a convenient length` to enable the worker to position the spray end of the gun the proper' distance from the surface being painted". In some instances the length of the insertedl portion may be asV much as fteen', twenty, or' even twenty-five feet, and it is' my opinion that the length isV only limitedt by the ability off the Workman to` properly handle thev gun:

The invention also contemplatesy painting the roofs of buildingswithout the necessity of; building4 scaffolding; Instead; the workmanl mayA 2. stand' on` the ground. and do the job more eX- peditiously and: more eiiiciently.

Referring to the drawings, which. are given by way of example:4

Figure 1 is a side elevation of my newA and improved spray gun. showing thev ilexible 'con` duit leading` from a pressurev vessel containing the fluid to be sprayed?, tothe nozzle portion` of the spray gun, said conduitv passing througlr the handle of the gun and' adapted tobe' pinched on or opened by the operator;

Figure 2 is an elevation of my' new and improved spray gun as viewed from the right' end) oi" Figure 1f;

Figure 3v is a sectional elevation: of the spray gun shown in Figure 1;?

Figure 4 is anend view of the thimble positioned on the end of the nozzle portion ,of the spray gun and turnedf through an angle of' 90` from the position shown in Figure 2;.

Figure 5 is a fragmentary'view inv sectiontalenj along the lines 5;-5? of Figure 4;

Figure 6' is a sectional` elevation takenv along: the lines 6--6 ofrv Figure 3;v

Figure 7 isa diagrammatic View showing the: air tube of the spray gun of Figurev l separated and a straight extension inserted therebetween;` Figure 8 is similarto'Fi'gure 7 except that' the extension positioned between the handle end of! the air tube and: the nozzle: has one portion at an angle of appr-'oXiInatel'y'BOo with respect toi its main portion; and

Figure 9 is similarto Figures 7 and 8 except'l that the extension between the spray gunfelements is a tubularfconduit with one portionv at an angle of' 90' withl respect toltheother portion.`

Referring rst'to Figures 1l and 3, thel spray nozzle generally designated by the numeral I9',

includes a straight tubular portion Il having a passage l2 therethrough.V The tubular por'- tion Il has an interior counterbore [31 formed in one' end thereof. The nozzle lal'so includes a tubular portion i4, the left end |52'of which is reducedin diameter to form a working t Yin the counterbore- I3 and, therefore, the nozzle may be readily separated and extensions posi'-v tioned therebetween as wilt hereinafter be described in connection with Figures '71, 8, and 9'.-

The portion I'I has secured thereto-1a handlegenerally designated' by the numeral |61 which consists of a right portion I'F and a left portion. I8 which are secured together in any suitable manner; forexample,r by meansl ofv screws i9, leaving therebetween a hollow interior 'AllA inv -which is mounted aspring 21, ashort leg 22'? of which bears against the wall I1a, and a long leg 23 of which extends through a slot 24 in the handle and bears against a lever 25 which is secured to a bifurcated yoke 26 which is pivotally secured to the handle near the upper end thereof by means of screws 21. A wire yoke 28, which may be in the form of a U, has its ends extending into holes 29 in the handle near the lower end thereof and consequently is pivotally secured to the handle. This yoke is provided so that the workman can force the lever 25 towards the handle I8 and then swing the yoke 28 upwardly to engage the lower end of the lever and thus retain it.

The handle I1 (Figure 2) has a curved webl 30 partially embracing the nozzle portionv II and secured thereto by screws. Likewise the handle portion I8 has a web extension 3I similar to the extension 30 which is also secured to the tube portion II by means of screws. These screws are designated by the numeral 32 in Figure 1. A rectangular passage 33 is formed in the handle I6, and a hose or other flexible conduit passes through the passage 33 adjacent to a boss 34 formed in the handle, and is connected to the nozzle portion of the spray gun which will presently be described. When the workman squeezes on the lever 25 to release the yoke 28, allowing the latter to swing downwardly, the lever 25 is unlocked and when the workman releases the lever 25 it, under the urge of the spring 2I, swings in a counterclockwise direction about the screws 21 as a fulcrum, and the upper end of the lever 25 presses the hose or the conduit 35 against the boss 34 and, thereby, prevents the passage of any fluid through the hose.

The nozzle portion of the gun, as stated above, includes the tubular portion I4, the end of which telescopes into the portion II. Positioned within the tubular passage 36 in the portion I4 is a T fitting 31 which has legs 38, 39, and 49. The legs 38 and 39 have their axes in alignment and disposed at an angle of 90 with respect to the axis of the portion I4, while the leg 40 has its axis preferably concentric with the passage 36 in the tubular portion I4 and extending toward the right end thereof as viewed in Figure 3.

Threadedly engaging the leg 38 is an elbow 4 I, the upper end 42 of which has a valve seat 43 formed thereon. The lower end 44 of the elbow has a nipple 45 mounted therein and over which the end of the hose 35 ts. A clamp 46 embraces the end of the hose and firmly secures it to the nipple 45.

Threadedly engaging the leg 39 of the T 31 is a plug 41 which has a threaded hole formed therein. A valve member l48 has a beveled face 49 which is adapted to engage the seat 43. The valve 48 is carried on and is preferably formed integral with a screw shank 59 which threadedly engages the threaded hole in the plug 41. The screw shank 5I! may carry on its upper end a knurled knob 5| and by means of this knob the valve 48 may be propelled toward or away from the seat 43 and thus the flow of the fluid to be sprayed may be regulated.

A nipple 52 has its left end, as viewed in Figure 3, threadedly engaging the threaded hole in the interior of the leg 40. A lock nut 53 is provided for locking the nipple in position on the leg 40 of the T, and a gasket 54 is provided for maintaining a seal therebetween. A tip 55 threadedly engages the right end of the nipple 52 and may have formed therein one or more holes or perforations 56.

The right end of thev portion I4 has a plurality of longitudinal slots 51 formed therein whereby the portions 58 therebetween are springy and, therefore, firmly engage and hold attachments applied on said end.

Positioned on the right end of the portion I4 is a thimble member 59 which has a straight tubular portion 6B overlying and springingly engaged by the sectors 58, and a frustoconical portion 6I with an integral inwardly extending bead 62 therebetween. The end or headv 63 of the thimble has an oval or elliptical opening 64 centrally located therein through which the end of the tube 55 extends.

The head 63 of the thimble also has oppositely disposed vtubes 65 and 66 mounted therein. These tubes are angular with respect to the axis of the spray leaving the tip 55 through the orifice means 56, and since the passages within these tubes communicate with the air in the nozzle the spray leaving the gun instead of being conical, is in the form of an ellipse due to theaction of the air passing through the elliptical hole 64, and due to the lateral action of air thereon via the tubes 65 and 66. The spray leaving the gun when the thimble 59 is positioned as shown in Figure 2, will be deposited on the surface in the form' of a long, narrow, vertical swath. When thev at the top thereof, and a cover 69 is positionedthereon with a gasket 10 therebetween, and a seal may be eected by movement of the clamping members 1I and 12 in the direction of the arrows. Mounted in the cover is means to be connected to a source of air under pressure; for example, a valve 13 mounted in the cover 69 communicates with the interior of the vessel and has a portion 14 adapted to be connected to a p-ump or any other convenient source of air under pressure. 'Ihe vessel 61 has mounted in the wall thereof, adjacent to the bottom, a nipple 15 which may be secured in sealed relation with said wall by means of nuts 16 inside and outside of the vessel with suitable gaskets 11 between each nut and said wall. An open ended pipe 18 may extending into the vessel.

The vessel may be loadedr with the liquid to be sprayed, the cover may be placed thereon and sealed thereto by means of the clamps 1I and 12 and the vessel connected to a source of pressure; however, before subjecting the vessel to the air pressure the lever 25 is released in the manner hereinbefore described and will assume the position shown in dot-dash lines in Figure 1; thus the hose 35 is clamped between the upper end of the lever 25 and the flat surface 34a. of the boss 34 so that no fluid may reach the noz-y zle. Then after subjecting the interior of the container 61 to pressure the operator may decide whether he wants to apply the spray in long hori zontal or vertical swaths. If he wishes the material to be applied in verticalY swaths he turns the thimble 59 to the position shown in Figure 2,

or if -he wishes the swaths to be horizontal he turns the thimble to the position shown infFigure 4. Then holding the gun a4 proper distance from the work he may grasp the lever and force; it toward the handle I6 and may theni swing the yoke 2S to retain `the lever' 25;' in this position and the liquid will be delivered to. the gun continuously and. uniformly until the operator. wishes to stop the flow of the fluid in which event' he releases the lever 25and allows it to assume the dot-dash position shown. in Figure l.

In Figure 7 the portions il and I4 of. the spray gun are separated and a. straight. tubular extension 3| is positioned. therebetween. The left end. of the extension has aportion of reduced diameter like the portion working t in*v the counter-bore |45 formed in the tubular-portion ll. This is not shown in Figure 7, but it is similar to the arrangements shown in Figure 3. The right end of the extension. 8l has a counterbore formed therein similar to the counterbore i3 formed in the tubular portion l I and illustrated in Figure 3. The extension 8l may be of any desired length; for example, suppose it is desired to paint the walls of a room from outside the doors or windows thereof, the length of the extension 8l would be suicient to enable the worker from outside the door or window to position the nozzle end of the gun the proper distan-ce from the surface to be sprayed.

Figure 3 is similar to Figure '7 except that a tubular extension 82 is inserted between the portion Il and the portion I4, and this extension near the right end thereof has its axis forming an angle of approximately with the axis of the left portion thereof. The tubular extension 82 having its right end angular as described may be adjusted by the operator relative to the axis of the tubular portion l l so as to direct the spray from the nozzle end of the portion ll upwardly, laterally, or downwardly, and, thereby obtain a great degree of flexibility.

The arrangement shown in Figure 9 is similar to that shown in Figures '7 and 8, the main difference being that a tubular extension 83 is inserted between the portions Il and i4 and this tubular extension has the axis of its right end 83a forming an angle of substantially 90 with the axis of the straight portion 83h.

In the prior art many attempts have been made to provide valving means which will completely cut off the flow of liquids which carry aggregates; for example, liquids which have fibrous or granular materials, or both, therein. I have found that my method of clamping the flexible conduit (35, for example) between the anvil or nat surface Sila and the upper end of the lever 25 squeezes the walls of the conduit together and thereby completely cuts off the flow of liquid to the nozzle of the gun. The walls of the flexible conduit in the clamped area appear to close in about any granular or fibrous material lodged therebetween at the time the walls are clamped together and actually contact the opposite wall and effectively forms fluid-tight contact with said opposite wall and thereby completely cuts off the llow of liquid.

From the above it will be Seen that applicants new and improved spray gun with the extensions 8i, and/or 32 and B3, provides a tool by means of which a house may be painted both outside and inside, and including the roof without the necessity of erecting scalfolds and without even entering the house itself. It will be understood that where the extensions are employed the hose or flexible conduit is of sufficient length to ex- I5 which forms a tend from the-nipple 45 ont the; portion |141 to the nipple' 'l5 on the vessel 61.

Although I` have herein shown. andv described myV new and improved sprayv gun. and several attachments therefor, itv is obvious that many changesmay be made inthe arrangements. herein shown and described, within the scope of the appended claims:

What is claimed is:

l. In av liquid sprayer, a` straight air tube adaptedto be connected to a sourceofl air having a low pressure of substantialvolume, a spray nozzle in said tube adjacent to the discharge end thereofv and having a liquid connection extending through the wall of said tube, a handle secured-'to said tube and having a passagetherethrough substantially parallel tol said tube, said. handle having a boss portion extending beyond saidpass'age in the direction of saidl sprayl nozzle@ al flexible conduit extending from a source 'of liquid under pressure and via. said passager to said liquid connection, a lever having secured! thereto a bifurcated yoke pivotally connected to said handle, and spring means for normally urging said lever in direction away from said handle. thereby causing the end of said lever to pinch said flexible conduit against said boss and thereby prevent said liquid from being delivered to said spray nozzle.

2. A liquid sprayer according to claim 1, in which a wire yoke generally in the form of a U has its ends pivoted on said handle near the lower end thereof, said yoke being adapted to be swung upwardly to engage the lower end of said lever after a workman has swung the latter toward said handle in order to disengage the upper end of said lever from said exible conduit and retain said lever in its disengaged relation with said conduit when it is desired to have liquid flow to said nozzle.

3. In a liquid sprayer, an air tube comprised 0f at least two portions separably connected together, said connection being intermediate the ends thereof, one of said portions being adapted to have a source of air having a low pressure and of substantial volume connected to the end thereof, a handle secured to said portion near the inlet end thereof and having a passage therethrough substantially parallel to said p-ortion, a spray nozzle mounted in the other portion adjacent to the discharge end thereof and having a liquid connection extending through the wall thereof, a flexible conduit connected to said liquid connection and extending via said passage in said handle to a source of liquid under pressure, and means carried on said handle and consequently under control of an operator for clamping said flexible conduit when it is desired to interrupt the flow of fluid to said sprayer and for unclamping said conduit when the flow of fiuid to said sprayer is to be reestablished, said portions of said air tube being separated, and a length of conduit inserted between 'and joining said portions, said conduit being adapted to deliver air from said first mentioned portion to said second mentioned portion and to thereby cause said sprayer to spray with said nozzle remote from the operator.

4. In a liquid sprayer, an air tube comprised of at least two portions separably connected together, said connection being intermediate the ends thereof, one of said portions being adapted to have a source of air having a low pressure and of substantial volume connected to the end thereof, a handle secured to said portion near 7 the inlet end thereof and having a passage therethrough substantially parallel to said portion, a spray nozzle mounted in the other portion adjacent to the discharge end thereof and having a liquid connection extending through the Wall thereof, a flexible conduit connected to said liquid connection and extending via said passage in said handle to a source of liquid under pressure, and means carried on said handle and consequently under control of an operator for clarnpinf,r said exible conduit when it is desired tointerrupt the flow of fluid to said sprayer Iand for unclamping said conduit when the ow of uid to said sprayer is to be reestablished, said portions of said air tube being separated, and a length of conduit interconnected between said portions, said conduit having a portion of its length coinciding with the axis of said first portion of said air tube and having another portion,

the axis of which is angular with respect to the 20 axis of said first portion and coinciding with the axis of said second portion of the tube.

EDWIN W. VOSE.

References Cited in the le 0f this patent UNITED STATES PATENTS Number Number Name Date Mikorey Aug. 1, 1911 Fulton Dec. 28, 1920 Heinrich Nov. 2, 1926 Burdick et al. Apr. 12, 1927 Lawrence et al. May 12, 1931 Metrick et al Dec. 10, 1940 McKee Mar. 31, 1942 Robinson May 19, 1942 Klein Nov. 3, 1942 Mason Aug. 29, 1944 FOREIGN PATENTS Country Date Great Britain Jan. 16, 1901 France July 26, 1937

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