US2458220A

US2458220A - Multiple spray gun

Info

Publication number: US2458220A
Application number: US592450A
Authority: US
Inventors: Harold L Striegel; John W Baur
Original assignee: Binks Sames Corp
Current assignee: Binks Sames Corp
Priority date: 1945-05-07
Filing date: 1945-05-07
Publication date: 1949-01-04
Anticipated expiration: 1966-01-04

Description

Jan. 4, 1949. H. STRIEGEL ETAL MULTIPLE SPRAY GUN 5 Sheets-Sheet 2 Filed May 7, 1945 i Q 2? if. a 3/ a 225 #52 2.? f 7. $5M Z/ w 3 g a WW 9 /5 7 Jan.

I1; f 1 T Z5 I 45 J15 H. L. STRIEGEL ETAL MULTIPLE SPRAY GUN 5 Sheets-Sheet 3 Jan. 4, 1949. H. L. STRIEGEL EI'AL 2,458,220

MULTIPLE SPRAY GUN Filed May 7, 1945 5 Sheets-Sheet 4 a; //z i 14 //7 fiz Je I: 2 0215 40 Klara la! 451774 91 1949- H. L. STRIEGEL ET AL 2,453,220

MULTIPLE SPRAY GUN Filed May 7, 1945 5 Sheets-Sheet 5 Patented Jan. 4, 1949 MULTIPLE SPRAY GUN Harold L. Striegel, Eric Gnstafsson, and John W.

Baur, Chicago, Ill., assignors to Binks Manufacturing Company, Chicago, 111., a corporation of Delaware Application May 7, 1945, Serial No. 592,450

4 Claims. 1

The present invention relates to spray guns and more particularly to a multiple type of spray gun.

Among the objects of the invention is to provide a novel spray gun structure for simultaneously spraying different character coating material in given relation, and which has a plurality of spray gun components or units which are relatively adjustable, as angularly, and each of which units sprays a difierent kind or character of material, so that the combined or aggregate sprays will produce a given coating effect or design. The spray gun units may be carried by a common body to which the air for effecting the spraying of the material in the individual units may be supplied and controlled, and may be adjustably connected to said body to obtain the desired relative adjustment of the units and the sprays therefrom, whereby the sprays from the individual units may be varied toward or from each other as desired to efi'ect the desired coating character or design on the target or surface being coated. The individual air supplies to the gun units may be individually varied, as by valves carried by the body of the device.

There are certain coating materials which are miscible and cannot be initially mixed. Therefore, by the present invention they are separately sprayed and permitted to mix only at the target surface.

There are other coating materials which will react with each other chemically and also in that case it is desirable that they be separately sprayed and not permitted to mix until they hit the target.

In some cases, the different coating materials will coalesce if mixed, as would be the case of a coating material containing a latex and another containing a latex coagulant, and therefore the present invention comprehends the spraying of the materials separately and to prevent the coalescence until they hit the target.

Another object of the invention is to provide a common means, such as a manually operable trigger, carried by the body and having a member connected to the means, such as needle valves, for controlling the supply of the material to and through each spraying unit, with means for adjusting the timing or relation of operation of the material-control valves.

Other objects, advantages, capabilities, features and the like are comprehended by the Y invention as will later appear and as are inherently possessed by the invention.

Referring briefly to the'drawings:

Fig. 1 is a view in side elevation of a multiple spray gun constructed in accordance with the invention;

Fig. 2 is a top plan view thereof;

Y Fig. 3 is a sectional view taken in a plane represented by line 3-3 in Fig. 1 of the drawings;

Fig. 4 is a sectional view taken in planes represented by line 'l4 in Fig. 2 of the drawings;

Fig. 5 is a transverse sectional view taken. in planes represented by line 55 in Fig. 1 of the drawings;

Fig. 6 is a sectional view taken in a plane represented by line 6-6 in Figs. 1 and 4 of the drawings;

Fig. 7 is a fragmentary sectional view taken in a plane represented by line 1-1 in Fig. 1 of the drawings;

Fig. 8 is a fragmentary sectional view taken in a plane represented by line 8-8 in Fig. 7 of the drawings;

Fig. 9 is a fragmentary sectional view, on an enlarged scale, taken in a plane represented by line 99 in Fig. 2 of the drawings;

Fig. 10 is a side view of the nozzle part shown 'in Fig. 9;

as comprising a body I having a rearward part 2 from which depends a handle or hand grip 3 and also having at the top a hook 4 by which the gun may be hung from any suitable means.

In the handle are provided bores or passages 5 and B (see Fig. 4), valve chambers I and 8 and an air passage 9 extending from the chamber I to an air passage Ill provided in the body I and the extension 2 (see Fig. 4). At the lower end of the passage or bore 5 is a plug H, and at the lower end of the passage 6 is provided a coupling or union l2 having means, as a threaded portion I3, for the suitable connection of a compressed air duct, such as a hose or the like .(not shown). The bore or passage l0 extends forward in the body I to a cross bore l4 (see Fig- 3) provided in the body I. Said cross bore is closed at an end thereof by a suitable plug I! (see Fig.

aseaaao 3 3). From the cross passage I4 extend air passages I6 (see Figs. 3 and 9) and I1 and I8 (see Fig. 3), respectively leading to valve chambers I9 (see Figs. 3 and 9) and and 2| (see Fig. 3), and respectively having

valve seats

22, 23 and 20 (see Fig. 3). In the passage It extends an elongated valve body 25 (see Figs. 3, 4, 5 and 9), the forward end of which has a valve seatin part 26 for seating on the seat 22, and the rear end of which has a threaded portion 21 adjustable thereby in a bushing-nut 28 threaded into the rear end of the bore or passage I0 (see Figs.

. 3 and 4) and having also a finger piece or knob 29. On the stem 25 within the bore I0 is awasher 30 which abuts against a cross pin 30a extending through the stem 25, and in the nut 28 is provided suitable packing 3001 against which is pressed a washer 300 by a spring 30b interposed between the

washers

30 and 300.

Referring to the handle 3, in the chamber I is located a valve cage or shell 3| (see Fig. 4) having a seat 32 fitted with a sealing engagement between the chambers I and 8, shell 3| having openings 33 for affording communication between a chamber 34 within the shell 38 and the chamber 1 surrounding said shell 3|. The forward end of the shell 3| has a screw plug 35 threaded in a forward portion of the handle 3, as shown in Fig. 4, and said plug 35 has a forward packing gland 36 to. which is threaded a cap 31 (see Figs. 1 and 4). Slidable in the plug 35. gland 36 and cap 31, and extending through said chamber 34 is a valve stem 38, the forward end part 39 of which is located at the rear of the trigger 40 which engages the stem 38-39 when the trigger 40 is pressed back by the user of the gun, and at the rear end portion of the stem 38 is carried a valve part 4| adapted to seat on the valve seat 32 by the force of a spring 42 pressing at its forward end against the valve 4| and at its rear end against the rear extended end portion 43 of the chamber 8. The valve 4| may have a stub 44 for extending intothe forward end of the spring 42 to maintain it in alignment. The trigger 40 is pivotally connected by way of pivot pins 45 carried by a lower part 46 of the body I (see Figs. 1 and 4).

At the forward part of the body I are provided I chambers 20 and 2| and through nut-bushings 5| and 52 threaded at the forward end of the body I and threaded to adiustably receive the threaded

parts

53 and 54 of the stems 49 and for adjustment therein, the outer ends of the stems 49 and 50 having finger knobs or

heads

55 and 56. Each member 5| and 52 has a socket in which is a spring 51 (see Fig. 3) normally pressing at one end against a washer 58 abutting a cross pin 59 carried by the stems 49 and 50, and at the other end pressing against a packing 51a in the head 5 I, the spring 51 acting to normally urge the valve 4'I48 toward closin position when the

knob

55, 56 is operated to adjust the stem 49, 50.

In the forward part of the body I are provided a plurality of

vertical bores

60, 6| and 62 in each of which is a pivot plug 63 (see for example Fig. 9) having a head 64, seated and sealed on the top of the body I, a shank or body 85 having an annular channel 66, a cross passage 61. and an axial passage 68 communicating with the cross passage 61 and leading to the lower end of the plug 68, this lower end of the plug having a threaded portion 69. In the lower or underside of the body I are provided sockets I0 around the threaded part 69 and in each of these sockets is a gasket II or the like. The annular channels 66 are, respectively, in communication with the valve chamber I9, or valve chamber 20, or valve chamber 2|, as the case may be, depending upon which channel is referred to.

To each threaded portion 59 of the pivot plug 63 is threadedly connected a spray gun unit I2, or 13. or I4, as the case maybe, all spray gun units being alike. Each spray gun unit has an upper hub I5 screwed to the threaded lower end portion 66 of the pivot plug 63. In this way each gun is angularly adjustable about the axis of the pivot plug 63, Normally, the-position of the middle gun I2 need not be adjusted, but the side guns I3 and I4 are adjusted relative to the middle gun I2. However, the middle gun may also be adjusted in certain cases when it is desired to do so.

Each gun unit has a gun body I6 having a forwardly extending hub 11, a rearwardly extending hub I8 and a downwardly extending hub I9 (see for example Fig. 9). To the hub 11 is threadedly connected and seated a material and or collar I01 (Figs. 4, 6 and 8) having at its endsair nozzle unit on the forward end of which is seated an air nozzle cap 8| held in place by a coupling ring 82, the cap 8| also having horns 83 for projecting side air jets for effecting flat spraying. This construction is shown in the McMartin Patent No. 2,249,771, granted July 22, 1941, and more specific description thereof is herein deemed unnecessary. The material to be sprayed in and by each

gun component

12, or 13. or I4 passes by way of the passage 84 (see Fig. 9); passage 85, nozzle tip 86, and orifice 81; and the air passes by way of

passages

88, 89, and 9| to the orifice 81, and also by way of

passages

92, 93, 94, and 96 to the side jet orifices.

91 in the horns 83. The flow of air is controlled and regulated by adjusting the air valves 25--26, 41-49, and 48-50. g

The flow of the coating material is controlled by a needle valve 98 having a tip 99, and having its rear end extending into the hub I8 at the rear portion of the gun'unit (see Fig, 9), such rear end portion passing through suitable packing I00 and having threaded connection with the forward endportlon I 0| of a stem I02. To. the rear end of the hub I8 is threaded a cap I03 which has a flanged part I04 provided with a hole for the passage of the stem I02, and between this flange I04 and a similar flange I05 at the forward end of the stem I02 is located a'spring I06 which normally urges the needle valve 9899 to closed position, and which yields to permit the opening of the needle valve 9899 when the trigger is pressed by the user of the device. Between the packing I00 and the inner end of the cap I03 is interposed a spring I00a.

The rear end portion of the stem I02 is threaded and on this is threaded an adjustable thimble heads or flanges I08 and I09 which may be nut shaped, or otherwise for turning the thimble or collar on the stem I 02 and adjusting it therealong to regulate the timing of the opening of the needle valves 98-99. A lock nut III! is provided on the free end of the stem I02 to hold the collar or thimble I01 locked in adjusted relation.

The upper part of the trigger 40 has spaced walls I I I to which are fixed side arms I I2, and in these side arms II 2 are carried theshanks II3 (see Figs. 6 and 7) of forks llfi having spaced aeoaaao fingers I I5 which straddle the bodies of the thimbles I01 on the stems or shanks I02. The rear edge portions of the fingers H6 have tapered or curved parts H8 to substantially abut squarely with the heads I of the thimbles I01 when the triggeris pulled back to operate the needle valves.

The inner ends of the stems H3 have threaded parts H1 (see Fig. 7) which are secured to the sides of a fork piece having fingers I I8 for spanning the body of the thimble I01 of the middle gun unit. A suitable washer H9 may be placed between each finger II 8 and the side wall III of the trigger, as shown in Fig. 7. It will be seen that the forks H4 and the fork H0 are pivotally supported by the trigger 40 so that when the trigger is pulled back the forks H4 and H8 may have an angular play for the fingers H5 to suitably squarely abut the rear flange I08 01' the thimble I01.

Normally, the spring I06 in each gun unit holds the needle valve 98-99 closed. The thimbles are so adjusted on the stems I02 that there is a clearance between the rear collar I08 and the fingers H8 and H5 of the forks. See Fig. 6 by way of illustration. When the trigger is pulled back it will first engage the air valve stem 39 to admit air to the air passage I0 and thence to the valves 22-26, 23-41, and 24-48 for the air to be first projected through the air nozzles 0| and side jet nozzles 91. Further movement of the trigger 40 will bring the fingers H8 (see Figs. 4 and, 6) into engagement with the collar I08 of the thimble I01 of the middle gun, and then the fingers H5 into engagement with the collars I08 of the thimbles I01 of the side guns. The latter engagements may be successive or simultaneous, or all may be simultaneous, as desired. The effect in each and all such cases is to open the needle valves in sequence or simultaneously as may be desired. Varying the position of the thimbles I01 on their respective stems I02 will vary the relative timing of the opening of the needle valves to obtain different effects of spraying.

One of the objects of the device is to adjust the relation of the gun units, which is done angularly about the axis of the pivot plug 63 so that the coating material may be sprayed from the gun units on the target more or less proximate, depending upon the resultant effect to be produced. This adjustment is had by loosening the threaded connection between the gun unit and the plug 63 and turning the gun unit to the desired angular relation and then tightening said connection. By adjusting the air control valves 22-26, 23-41, and 24-48 the resultant effect, may also be varied as desired.

An object of the device is to use different kinds of coating material in the respective gun units, such as different colored material. To illustrate, reference may be made to Figs. 14, and 16 showing a few examples of any number of different patterns that may be effected. In Fig. 14 is shown a pattern in which the background I20 is of a predominant color, such as a light color, which may be sprayed by the'middle gun unit, and the parts I2I may be sprayed from one of the side gun units of another color, such as red, brown or yellow, etc., and the parts I22 may be sprayed from another of the side gun units of still another color, such as blue, green or the like.

In Fig. 15, the background color I23 may not be so prominent, and the interspersed other color areas I24 and I25 may be more prominent.

In Fig. 16 the background color I26 is of minor value. while the other colors I21 and I28 are interspersed in major proportions.

All of these efl'ects are obtained in one spraying operation, that is, at the same time or simul-- taneously, and does not require the application of each color separately and at different times, whereby one must be allowed, as heretofore, to sufliciently dry or set before the other was applied, and wherein one color had to be superimposed upon another. The spray gun oi" the present invention applies all the colors, or different kinds of material, at once and there is no superimposing of one color or kind on another, hence, considerable time and material are saved.

While we have herein described and upon the drawings shown an illustrative embodiment of the invention, it is to be understood that the invention is not limited thereto but comprehends other constructions, arrangements of parts, de-

tails, features and the like without departing,

from the spirit of the invention. 0

Having thus disclosed the invention, we claim:

1. A multiple spray gun of the character disclosed, comprising, in combination, a body having a hand grip, a trigger movably supported on the body adjacent the hand grip, air passages in the body extending to the forward end thereof, an air valve within the body forcontrolling the entire flow of air through said air passages, a plurality of spray gun units support ed pendently from the forward end of the body, each spray gun unit including a. nozzle and having a continuous air flow connection with the air passages in the body, means to conduct material to each spray gun unit, a normally closed needle valve for controlling flow of material from each unit, each unit being movable freely by hand about an axis which is substantially vertical when the spray gun is held in normal horizontal position, and means adjustably coupling the trigger to the needle valves so that the trigger when moved may cause flow of material from the nozzles after flow of air is started and may initiate flow from any one of the nozzles before or after or simultaneously with flow from any other nozzle and irrespective of the positions of the units.

2. A multiple spray gun of the character disclosed comprising, in combination a body having air passages extending to the forward part of the body, an air valve in the body for controlling flow of air through the body, a trigger pivoted on the body and adapted to operate said air valve, a plurality of spray gun units depending from the forward part of the body, a plurality of hollow members swlveled on the body and communicating with the air passages, each spray gun unit being secured to a hollow member so as to turn therewith relative to the body and so as to receive air therefrom in all positions into which it may turn, means to feed material to each spray gun unit, needle valve means in each unit to control flow of material from the unit, and means adjustably coupling the trigger to the needle valve means so that the trigger may control flow of air and material in the manner desired.

3. A multiple spray gun of the character disclosed, comprising, in combination, a body having air passages extending therethrough, a plurality of spray gun units independently and movably supported upon the body so that the angles of the sprays may be varied, each unit including a nozzle and having air and material passages terminating in the nozzle, means for delivering auaaao ages, a needle valve in eachunit {or controlling the flow of material out of the nozzle, a spring normally closing each needle valve, each unit supporting means consisting of a hollow member secured to the body and having communication with the air passages in the body and delivering air to the unit, the unit turning about the axis of the hollow member when its angularity is to be varied, a trigger pivoted on the body, an air valve in the body controlled by the trigger to admit compressed air to said air passages and hence -to said nozzles, and means connecting the trigger with the needle valves to permit opening of the needle valves irrespective oi the angular positions of said units.

4. A multiple spray gun of the character disclosed, comprising, in combination, a body having air passages extending therethrough, a plurality oi spray gun units, means independently and pendently supporting the units-upon the body -so that the angles oi the sprays may be manually varied, each unit including a nozzle and having air and material passages terminating in the nozzle, means for delivering material to each unit through its material passages, a needle valve in each unit for controlling the flow'oi material out of the nozzle, a spring normally closing each needle valve. a trigger pivoted on 8 the body, an air valve in the body controlled by said trigger to admit compressed air to said air passages and hence to said nozzles, each needle valve having a valve stem extending outside or they unit and having screw threads thereon, an adjustable thimble having a head and engaged with the screw threads on ,each valve stem, means to holdthe adjustable thimble in ad- Justed positions, means fixed to the trigger and straddling the thimblesjand adapted to abut the heads thereof, the thimble being of sufficient length to permit said trigger-aflixed means to movea certain distance before the heads are abutted, the trigger operating to lift the corresponding needlevalve oil? its seat whenever the thimble head is engaged by said triggerafflxed means.

' HAROLD L. STRIEGEL.

ERIC GUSTAFSSON. JOHN W. BAUR.

REFEItENCES CITED The following references are of record in the file of this patent: Q

UNITED- STATES PATENTS Number Name I Date 2,370,408 MacDonald Feb. 27, 1945 2,380,827