US2035677A - Spraying device - Google Patents

Description

March 31, 1936.

A. sTE'lNKE SPRAYING DEVICE Original Filed March 18, 1952 MMU Patented Mar. 31, 193e srasmolnnvlcn Alfred Steinke, Harburg-Wilhelmsburg, Germany, assignor of four-tenths to Francis L, Dori,

New York, N. Y.

Application March 1s, 1932, serial N11-599,634. Renewed October 25,' 193,4. In Germany, March -6 claims. (01.91-45) This invention relates to new and useful imvprovements in spraying -devices and attachments thereto, and it has been the object of this invention to eliminate the atomized cloud of spraying material which usually surrounds the operator and which is extremely. injurious to health. A further object of this invention is to provide a means whereby continuous lines of even color can be produced on walls pr other objects to be lo sprayed without the use of stencils. Other ob- -`lects of my device are to produce patterns of various kinds directly by the use of small stencils vinserted -inthe device, and to return the surplus material to the container without any waste, still 5 other objects wiil'be evident from the followin specification and claims.

I attain these objects by the mechanism illus-V l 25 Figs. 4 and 5 show different types of stencils.

In Fig. 1, a. ls anipple for the connection of a compressed air hose, bis a nozzle through which the compressed air is forced, a gun handle c is attached to the barrel in the usual manner while -a valve mechanism with trigger z is arranged for shutting oi the air when desired. .y A bracket e supports another nozzle d from which a tubular connection leads to the color container f the neck p of which is threaded into bracket. e which also 5 supports the stencil attachment. This novel attachment consists mainly of a container g with two apertures g1 and y2 mounted directly in line with the jet emanating from the nozzle b'. The nozzle d is loosely mounted in tube di and turn- 40 able in same together with the tubular connection to the color container f, this tube having at its lower end asieve h the weight of 'which always brings the end of the tube to the lowest part of the container f by gravitational force.. f

A45 A screen i consisting of a disc with an aperture is mounted in the path of the jet in containerg' in the nozzle ofwhich is further inserted the stencil lc which is easily removable. This nozzle of the container g further supports l the roller r 0 which is usedfor guiding the spraygun along the object to be sprayed. The screen i has an openingat the bottom permitting surplus material to ow back to the' container f, through the tube l.

- In Fig. 2, e is the bracket into which is threaded 55 the neck of ,the container ,f soas to be. easily dis'- x mounted for reiillingand cleaning. on ythe'top of this bracket e Ais mounted the container g .(see

Fig. l) turnable around the tube l, a pin n rigidly fastened in vc engages in holesm in the container a, a screw ga extends from g through slot g4 in bracket e. By tightening the lnut on g3 the screening container g may be adjusted -in any Idesired position indicated by g', g" and g".

In Fig. 3 is shown a typical example of a double line pattern asjproduced by my invention without the use of suitable stencils k in Fig. 1.

In Fig. 4 is shown a sample of pattern produced by asquare holed stencil lc, the lines k1 being pro-` duced by rolling the spraygun on roller over the surface to be sprayed.

In Fig. 5 is shown a pattern produced by a circular holed stencil 1c, lines lci being produced as shown in Fig. 4' while circles k2 are produced `by letting the s'praygun stand still for a moment.

The operationof my invention is as follows: The compressed air escaping. through nozzle 11.20 sucks the color through nozzle d in known manner and produces a iet of spraying material which may be paint, varnish,lacq"uer, etc. This jetis` projected in through'the openingy yi in the.screen' ing attachment g through the aperture `in the disc i. The thus concentrated jet nally strikes the stencil IQ which being held close to theobject to be sprayed produces the desired pattern. l Through the fact that the spray passes through a Adistinguished on one` side while the other side is gradually fading away.

i, Having thus described myr invention, what claim is: A

1. A spraying apparatus of the class described comprising a nozzle connected to a source of yfluid pressure, an aspirator nozzle connected to a source of coloring matter and spaced relative to said iirst nozzle to form, a spray of coloring matter, a hood ink frontof said iirst nozzle and having a '50 mixing chamber for the spray of color` and'lair forwardof said nozzle, said hood-having means `to interchangeably hold stencils therein.. stencil means in said holding means to limit the shape of saidcolor spray, and means on said hood to facilitatea continuous movement of said apparatus at a relatively ilxed distance between the hood and a surface to be decorated.

2, A spraying apparatus of the class described comprising a nozzle connected to a source of `iluid pressure, an aspirator nozzle connected to a source of coloring matter and spaced relative to said rst nozzle to form a spray of coloring matten' a hood adjacent to and in line with said iirst nozzle, said hood having means to interchange- -ably hold stencils therein, stencil means in said holding means to limit the shape of said color spray, means on said hood to facilitate a continuous movement of said apparatus at a relatively xed distance between the hood and a surface to be decorated, and swivel means 'between the nozzle and the hood, whereby said aspirator4 nozzle may fbe swivelled to one side or the other `with respect to said hood so that the concentration of thespray may vary from side toside.

'3. A spraying apparatus of the class described comprising a bracket, a spray member pivotally mountedA on said bracket, a hood adjacent to and in line with said spray member, said hood having means to interchangeably hold stencils therein, a stencil means in said holding means, a pair of wheels mounted on said hoodv and projecting be- 'yond the front surface thereof, said wheels adapted to maintain said stencil means at a ilxed distance from a surface to be sprayed, and means to pivot' said spray member to vary the distance of either edge of the spray to the surface to be. decorated.

4. A spraying apparatus of the class described comprising a bracket, a spray member mounted on said bracket, a hood adjacent to and in line with said spray member, said hood having means to interchangeably hold stencils therein, a pair,

of wheels mounted on said hood and projecting beyond the front surface thereof, said wheels adapted to maintain a suitable distance betweenl a lsurface to be sprayed and-thespray member, J

said hood having a plate therein, dividing said in the line of the hood into an air and mixing chamber and 'a stencil receiving chamber, said plate having a generally central aperture for regulating the spray which is to enter said chamber.

5. A spraying apparatus of the class described comprising a bracket, a spray member pivotally mounted on said bracket, a hood adjacent to and inline with said spray member, said hood having means to interchangeably hold stencils in the front portion thereof, means to maintain a relatively fixed and suitable distance between a surface' to be sprayed and the hood, membei-,said

hood having an apertured plate therein; dividing said hood into an air and spray mixing chamber 'and a stencil receiving chamber, and means' to swivelably mount said spray member with respect to said hood to shade a stencilled design by varying the. concentration of color across the design.

6. A spraying device, comprising in combination, an atomizer for liquids and consisting of.a nozzle conveying liquid and a nozzle Afor compressed air in cooperation; a hood in the direction of the liquid jet issuingfrom the atomizer,

be sprayed and an elbowed liquid feeding pipe,

theupper part of which is loosely turnable in' the liquid nozzle -so that the bent lower part of the pipeA extending into the liquid container will adjust itself automatically toward the lowest f 40.

point within the said container when the apparatus is held inan inclined position.

ALFRED' stenen receiving-

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