US1007667A - Paint-sprayer. - Google Patents

Description

P. W. BALLARD.

PAINT SPRAYER.

APPLICATION FILED DBG. 30., 1909.

Patented NovQ7,1911

- UNITED STATES.

PATENT oEEIoE.

FREDERICK W. BALLARD, vOIE 'CLEVELAND HEIGHTS, OHIO, ASSIGNOR T0 TH'E SHERWIN- WILLIAMS COMPANY, OF CLEVELAND, OHIO, A CORPORATION 0F OHIO.

PAINT-SPRAYEB.

Specification of Letters Patent.

Patented Nov. 7, 1911.

Applicationled December 30, 1909. Serial o. 535,708.

To all whom t may concern:

Be it known that 5I, FREDERICK ll'. BAL- LARD, a citizen of t-he United States, and aV ication, the principle of -the invention being herein explained and the best mode vinwhioh I have contemplated applying thatprinciple, so as to distinguish it from other inventions.

plying liquids by means ofv air pressure, and

paint to a surface by means of a stream of air under pressure.

The objects of the invention are the provision of a 'device of'this character in which the flow of paint and air may be closely controlled by means located conveniently to the operator, anda device which will be simple in its construction and which may be economically manufactured.

The annexed drawing and the following description set forth in detail certain mechanism embodying the invention, such disclosed means constituting, however, but one of various mechanical forms in which the principle of the invention may be used. y

In said annexed drawing z-'Figure 1 is a .A

side elevation of my improved device; Fig. 2 is a vertical sect-ion thereof with certain parts shown in side elevation.

The impro-ved air-brush,v or sprayer,

which the present invention provides, comprises in the first place,L a tubular body which may be conveniently constructed -by threading into a member A, a member B of substantially the same diameter. Extending through the member A is an annular passage a, and extendingthrough the member B concentrically withthe passage a 'and within such passage a, is a passage b having a common orifice with passage a. The passage -b 1s enlarged at Its rear end at b', and

threaded into the member. B at the rear end thereof, is a nut b2 through which extends a threaded opening. A valve stem C `is` threaded through the nut b2 and has at its inner end a conical point o which is adapted to control the opening between the enlarged portio'n b of the inner passage and the nor- 5 mal portion b' of such passage, thus forming i operable by arm b5.

a 'needle valve which controls the passage from such enlarged portion to the common orifice of the passages. The valve stem C is provided at its outer end at the rearof the body, with an angled portion c which forms a handle for. the valve stem of the needle valve.

A pipe a is threaded into member A and opens into the passage a; this pipe is 't designed to be connected with an air or other Q fluid pressure supply, and the passage of l I such fluid pressure through the pipe and into My invention relates to apparatus for apthe passa-ge a is controlled by suitable cock 5 which is provided exteriorly withv an arm in particular it has regard to an apparatus known as an air brush adapted to apply a3. A similarly disposed pipe b3 is threaded into ,the member B and is designed to connect the enlarged portion b of the inner passage with apaint or other liquid supply receptacle, the passage through this pipe being controlled by a suitable cock b4 which is The body proper is provided with a suitable handle or grip D which is attached to the member B of the body proper in any suitable manner, the handle D preferably depending rearwardly from the body portlon of the sprayer. A lever d ispivoted to the handle D and alink cl2-is pivoted at one end towthe lever d and att-he other end to the arm b5 which operates the cock b4 controllin the passage from the paint supply recept-ac e tothe inner passage. spring d bearing against the lever d serves to normally retain said lever 1n retracted position, and vhence to hold the cook b4' in closed position.-

' The mode of operation-of the-=device may be briefly pointed out with this description in view. The operator holds the device by its handle and turns on the airsupply by opening the cock in the air supply pipe, the operating arm of which is obviously conveniently located. The paint supply, however, is normally closed by -means of the spring which bears against the operating iever. The operator then may open such paint supply by pressure withjhis thumb" because such supply vwill remain open only so long as the operator exerts pressure upon lthe operating lever, he has an absolute and instantaneous control over the supply of paint to the sprayer.- Furthermore, by means of the needle valve which controls the flow of paint throughthe inner passage of the sprayer, the operator-may make a very close or fine adjustment of the opening through which the paint Hows, and the handle by 'which the needle valve is operated is located in a most convenient position for manual operation by the operatorl Other modes of applying the principle of my invention may Vbe employed instead of the one explained, change being inade as regards the mechanism herein disclosed, provided the means stated by any one of the following claims oi' the equivalent of such stated means he employed.

I therefore particularly point out and distinctly claim as my invent-ion:-

l. A paint sprayer, comprising a body provided with concentric passages having a common orifice, certain of said passages being connected with a Huid-pressure supply and certain of said passages being connected with a liquid supply, valves respectively located in the fluid-pressure and liquid connections, and a handle disposed at an angle to said body and forming a pistol grip, aV thumb lever for operating such valve in such liquid connection, said handle being disposed adjacent to such valve in` said liquid connection, whereby said sprayer mayv be operated with one hand.

2. A paint sprayer, comprising a body ,provided with concentric passages having a common orifice, certain of said passages being connected with a fluid-pressure supply and certain of said passages being connected with a liquid supply, a needle valve in the liquid passage intermediate the liquid supply connection and the orifice, said needle' valve having its stein threaded in, and extending outside of, said body, valves respectively located in the fluid-pressure and liquid connections, and a handle disposed at an angle to said body in the` same plane as said connections, said handle vbeing also disposed adjacent to such valve in said liquid connection and forming apistol grip, whereby said sprayer may be operated with one hand.

3. A sprayer comprising a body provided with two concentric passages having a common orifice, the inner passage being enlarged at its rear end, and pipe for connectingthe outer passage with a fluid-pressure supply, a valve in such pipe. a second pipe foreonnecting the enlarged port-ion of the. inner passage with a liquid supply, a second valve in said second pipe. an arm t'or operating said second valve. a handle for said body disposed rearwardly thereof in the saine 'plane as said two pipes but at an angle i thereto and to said body, said handle forining a pistol grip, a lever pivoted to said handle, a link pivot-ed to said arm and to lsaid lever` a spring normally retaining said second valve in closed position, and a needle valve controlling connection between the enlarged portion and the normal position of the inner passage, said vneedle valve having its stem threaded in, and extending outside ot,`said body.

Signed by Ine this 28th day of December, 1909.

FREDERICK W7. BALLARD.

Attested by ANNA L. GILL, JNO. Ft OBERLIN.

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