US2783090A

US2783090A - Spray device

Info

Publication number: US2783090A
Application number: US397559A
Authority: US
Inventors: Frederick K Minerley
Original assignee: AIR WAY IND Inc
Current assignee: AIR WAY IND Inc; AIR-WAY INDUSTRIES Inc
Priority date: 1953-12-11
Filing date: 1953-12-11
Publication date: 1957-02-26
Anticipated expiration: 1974-02-26

Description

Feb. 26, 1957 F. K. MINERLEY 2,783,090

I SPRAY DEVICE Filed Dec. 11, 1953 IN VEN TOR. FREDERICK K MiNERLEY By JMQQMM ATTY.

SPRAY DEVICE Frederick K. Minerley, Lincolnwood, Ill., assignor to Air- Way Industries, Inc., a corporation .of Delaware Application December 11, 1953, Serial No. 397,559

6 Claims. (Cl. 299-86) This invention relates to spray units, but more particularly to such units employed as attachments to vacuum cleaners, wherein the stream of air generated by the vacuum cleaner is employed to spray liquids, such as paints, insecticides and the like, and an object is to produce an improved spray unit of the above type, having the novel features of construction, arrangement and operation hereinafter described.

By way of illustration but not of limitation, an embodiment of the invention is shown on the accompanying drawings, in which:

Figure 1 is a vertical sectional elevation of the spray unit, showing a portion of the vacuum cleaner hose attached thereto;

Figure 2 is a front'end view of the spray nozzle substantially on the line 2-2 of Figure 1;

Figure 3 is a transverse sectional view on an enlarged scale, taken on the line 3-3 of Figure 1; and

Figure 4 is an enlarged view of the end portion of the spray nozzle showing the spinner mounted thereon, the same being shown in elevation.

The illustrated embodiment of the invention comprises a spray unit consisting of a glass jar for holding the material to be sprayed, the jar having a reduced screw neck 11 to receive a metallic screw cap 12 which has a raised central portion 14 which is fiat to receive a transversely arranged metallic air tube 15, the rear end of which projects beyond the side of the jar and is open to receive the usual fitting 16 on the end of a vacuum cleaner hose it being understood that air is forced by the vacuum cleaner through the hose, and of course then through the transverse tube 15.

Securing the transverse air tube to the flattened portion 14 of the closure cap is a tubular rivet 17 to which extends a metallic tube 18 which projects vertically downward and terminates a short space from the bottom of the jar 10. Above the rivet 17, the tube 18 is bent at substantially right angles to provide a nozzle 19, the end of which projects outside of the air tube 15. As shown, the adjacent end of the air tube is reduced as indicated at 20, and in the end is a central aperture 21 substantially larger in diameter than that of the nozzle 19 which is arranged coaxially of the aperture.

On the extreme outer end portion of the nozzle 19 is a sleeve 22 which has an outwardly extending flange at the inner end. As shown, the sleeve 22 is disposed wholly outside of the inner tube, and rigid with the nozzle 19 on the inner side of the aperture 21 is a collar 23. Arranged between the flange on the sleeve 22 and the collar 23 is a spinner 24 which is rotated in response to the stream of air passing out from the aperture 21 in the reduced end or nozzle of the air tube 15. As shown, the spinner 24 is generally rectangular in shape with the opposite ends curved in order that it may spin freely within the aperture 21 and with the curved ends in close juxtaposition to the rim of the aperture 21 substantially as indicated on Figure 2.

rates Patent The rear face of the spinner 24 is flat but the front face has a pair of axially inclined surfaces 24a and 24b, the inclinations being oppositely arranged as indicated on the drawing. The stream of air passing out of the nozzle end 20 creates a negative pressure on the oppositely inclined surfaces 24a and 24b and not only causes the spinner to rotate at a speed somewhat less than that of the air stream, but also creates an aspirating efiect at the outer end of the tube 18 for drawing liquid up from the jar 10. It will be understood that the air from the nozzle end 20 forms substantially a vortex with the center disposed coaxially of and close to the end of the tube 18. The spinner 24 may be of a bright colored plastic so that in operation, it not only presents an attractive appearance but functionally aids in eflecting the desired aspirating effect to draw up the liquid in the jar. The action is such that air is prevented from moving rearwardly thereby militating against liquid particles, such as paint, from being carried upon the spinner and adjacent tube, which would interfere with the rotation of the spinner.

The lower end of the vertical tube 18 is adapted to be closed by a conical valve 26 which is vertically movable into and out of seating engagement with the open end of the tube 18. The valve 26 has a U-shaped stem 27 which is integral with a vertically disposed actuating rod 28 arranged substantially parallel to the tube 18 and extending through a hole in the cap portion 14, the upper end terminating in a screw-threaded end portion projecting through an aperture in the wall of the air tube 15. For guiding the vertical movements of the rod 28 is a guide plate 29 rigid with the lower end portion of the tube 18 and having a sleeve-like portion through which the rod 28 may reciprocate. A helical coil spring 30 surrounds the upper end portion of the rod 28 and the lower end of the spring bears against the adjacent wall of the air tube 15. On the upper screw-threaded end portion of the rod 28 and projecting outwardly of the air tube 15 for convenient manual operation is a button 31. Manifestly by depressing-the button 31, the valve 26 is unseated to allow the liquid within the jar 10 to be drawn upwardly through the tube 18 by the aspirating action of the air passing at high velocity over the free outer end of the nozzle 19.

A conventional vent hole V is provided through screw cap 12 to prevent the building up of negative pressures in jar 10 as liquid is removed.

It is to be understood that numerous changes in de tails of construction, arrangement and operation may be effected without departing from the spirit of the invention especially as defined in the appended claims.

What I claim is:

1. A spray unit comprising a jar having a screw neck, a cap in threaded engagement with said neck, said cap having a flattened raised portion, an air tube arranged transversely on said raised portion, means securing said tube to said cap, a nozzle-like end portion on one end of said air tube, the opposite end being open to receive a vacuum cleaner hose, said nozzle-like end portion having a relatively large circular opening, a relatively small liquid carrying tube having a portion outside of said nozzlelike end portion and arranged coaxially of the latter extending inside of the air tube and through the walls thereof and the raised cap portion and terminating adjacent the bottom of the jar, a conical valve adapted to close the bottom end of the liquid carrying tube, a vertical actuating rod connected to said valve and slidably extending through the cap and adjacent wall of the air tube, there being an opening in the opposite wall of the air tube, an operating button on the end of said rod and slidable through said last opening, a coil spring on said rod between said button and a wall of the tube for urging said valve closed, a substantially rectangular spinner on said liquid tube disposed within said relatively large opening and having curved ends close to the edge of such opening, and a pair of oppositely inclined air impinging surfaces on the outer side of said spinner to cause rotation thereof, and a collar on the liquid tube arranged on opposite sides of the spinner to retain same on such tube but afford free rotation thereof.

2. A spray unit comprising a jar having a screw neck, a cap in threaded engagement with said neck, said cap having a flattened raised portion, an air tube arranged transversely on said raised portion, means securing said tube to said cap, a nozzle-like end portion on one end of said air tube, the opposite end being open to receive a vacuum cleaner hose, said nozzle-like end portion having a relatively large circular opening, a relatively small liquid carrying tube having a portion outside of said nozzle-like end portion and arranged coaxially of the latter extending inside of the air tube and through the Walls thereof and the raised cap portion and terminating adjacent the bottom of the jar, manually operated means for opening and closing said liquid tube, a substantially rectangular spinner on said liquid tube disposed within said relatively large opening and having curved ends close to the edge of such opening, and a pair of oppositely inclined air impinging surfaces on the outer side of said spinner to cause rotation thereof, and a collar on the liquid tube arranged on opposite sides of the spinner to retain same on such tube but afford free rotation thereof.

3. A spray unit comprising a jar, a cap detachably connected to said jar, said cap having a flattened raised portion, an air tube arranged transversely on said raised portion, means securing said tube to said cap, a nozzle-like end portion on one end of said air tube, the opposite end being open to receive a vacuum cleaner hose, said nozzlelike end portion having a relatively large circular opening, a relatively small liquid carrying tube having a portion outside of said nozzle-like end portion and arranged coaxially of the latter extending inside of the air tube and through the walls thereof and the raised cap portion and terminating adjacent the bottom of the jar, manually operated means for opening and closing said liquid tube, a substantially rectangular spinner on said liquid tube disposed Within said relatively large opening and having curved ends close to the edge of such opening, and a pair of oppositely inclined air impinging surfaces on the outer side of said spinner to cause rotation thereof, and a collar on the liquid tube arranged on opposite sides of the spinner to retain same on such tube but afford free rotation thereof.

4. A spray unit comprising a jar, a cap detachably con nected to said jar, an air tube arranged transversely on said cap, means securing said tube to said cap, a nozzlelike end portion on one end of said air tube, the opposite end being open to receive a vacuum cleaner hose, said nozzle-like end portion having a relatively large circular opening, a relatively small liquid carrying tube having a portion outside of said nozzle-like end portion and arranged coaxially of the latter extending inside of the air tube and through the walls thereof and the raised cap portion and terminating adjacent the bottom of the jar, manually operated means for opening and closing said liquid tube, a plastic spinner on said liquid tube disposed within said relatively large opening and having curved peripheral portions disposed close to the edge of such opening, and a pair of oppositely inclined air impinging surfaces on the outer side of said spinner to cause rotation thereof, and a collar on the liquid tube arranged on opposite sides of the spinner to retain same on such tube but afford free rotation thereof.

5. A spray unit comprising an air tube adapted to be connected with a source of air under pressure, said air tube having an outlet and with a relatively large outlet opening, a relatively small liquid tube with an outlet end arranged coaxially within the air tube and projecting centrally through said outlet opening the outlet end of said liquid tube terminating outwardly of the outlet end of said air tube, a spinner rotatably mounted on the outlet end of the liquid tube, said spinner being disposed Within the end of said outlet opening and having oppositely inclined surfaces thereon for causing rotation thereof in response to pressure imposed thereon by the air stream issuing through said outlet opening, the outlet end of the liquid tube being so related to the nozzle that the air issuing through the outlet opening of the air tube and past the spinner creates a vortex at the outlet end of the liquid tube to create an aspirating effect thereon.

6. A spray unit as claimed in claim 5, in which the spinner comprises a substantially rectangular elongate plastic member, and curved end walls on opposite ends of the spinner.

References Cited in the file of this patent UNITED STATES PATENTS 2,665,943 Palm Jan. 12, 1954 FOREIGN PATENTS 315,201 Great Britain July 9, 1929 442,424 Great Britain Feb. 7, 1936 864,370 Germany Jan. 26, 1953