US2647796A - Spraying device with swivel nozzle - Google Patents

Description

Aug. 4, 1953 ZIHERL 2,647,796

SPRAYING DEVICE WITH SWIVEL, NOZZLE Filed March 25 1950 Fael 5 12 6715 10 \l y, 49 x L n 2 g3 R 1 INVENTOR. FRANK ZlHERL ATT ORNEY Patented Aug. 4, 1953 SPRAYING DEVICE WITH SWIVEL NOZZLE Frank Ziherl, Euclid, Ohio, assignor to Z & W Machine Products, Inc., a corporation of Ohio Application March 23, 1950, Serial No. 151,409

2 Claims. (01. 299-73 The present invention relates to liquid spraying devices and more particularly to an electrically energized spraying device having an adjustable nozzle.

' This application is a continuation-in-part of my copending application, Serial No. 107,029, filed July 27, 1949, wherein I have disclosed and claimed an electrical spraying device.

In spraying devices of the character disclosed in said copending patent application, difiiculty may be encountered under circumstances where the article to be sprayed is located overhead or has portions thereof which are not accessible to the straight-line spray of the device.

When the device has to be pointed upwards for overhead spraying, or when the surface to be sprayed is so located that the spray device has to be tilted downwards, the liquid in the container tends to flow away from the pump inlet and thereby an erratic spray results. This condition is aggravated when the liquid contents of the jar or container have reached a relatively low level.

Similarly, situations exist where the surface to be reached by the spray is shielded or concealed in such a manner that the spray device cannot be bodily directed upon it, due to space limitations.

It is the primary object of my invention to provide a spray device having an adjustable nozzle which can be positioned to spray in a desired direction independently of the position of the body of the spray device.

Another object of my invention is to provide an adjustable nozzle which can be freely moved to any one of several positions and yet will not leak or drip.

Still another object of my invention is to provide an adjustable nozzle which is simply constructed and economically manufactured.

Other objects and advantages of the invention will be apparent during the course of the following description. V In the accompanying drawings, forming a part of this specification, and in which like numerals are employed to designate like parts throughout the same,

Fig. 1 is a side elevation of an electrical spraying device embodying the features of my invention, portions thereof being broken away to show details of construction.

Fig. 2 is an enlarged longitudinal cross-sectional view of the pump assembly shown in Fig. 1. Fig. 3 is a detail of the nozzle body.

- Fig. 4 is an end view of the nozzle body taken as indicated by line 4-4 of Fig. 3.

Referring more particularly to the drawings, the spraying device includes a container or jar I on which may be threadedly secured a cover 2. The cover 2, in turn, has secured thereto a hollow motor housing 3 formed of molded plastic or the like and having a handle or grip l integral therewith.

Mounted within the housing 3 is an electromagnet 5 and an armature or rocker arm 6 which is pivotally movable relatively to the electromagnet and is actuated thereby. Electrical power is supplied to the electromagnet 5 through leads I, the operation of the device being controlled by a switch 8 which is secured on the handle portion 4 of the housing 3.

The armature 6 is movable in a vertical plane, and one end thereof overlies and rests upon a button 9 forming part of a pump assembly which is indicated generally by reference numeral Ill.

The pump assembly Ill is supported within the housing 3 and the inlet or tube portion l I thereof projects downwardly into the jar I. The nozzle portion I2 of the pump assembly projects laterally through an opening I3 provided in the housing 3.

For fuller details of the housing structure and the operating mechanism, reference is made to the aforesaid copending application, Serial No. 107,029.

Referring more particularly to Fig. 2 of the drawings, it will be seen that the pump assembly I0 comprises a cylindrical body I4 which is bored as at I 5 to provide a passageway for a piston or plunger I6. The body is counterbored and tapped as at H to threadedly receive a plunger guide I8.

The bore I5 is further counterbored to provide an annular recess I9 which receives a resilient sealing ring 20. The ring 20 serves to prevent leakage of fluid past the guide I8 into the bore I5.

The lower portion of the bore I5 is counterbored and tapped as at 2| to threadedly receive one end of a tube 22, the internal bore of which is, in efiect, a continuation of the bore I5.

The tube 22 extends downwardly into the container I and terminates substantially near the bottom of the container, where it is threadedly secured to a fitting 23 which forms part of a ball check assembly.

The fittin 23 is adapted to receive a ball 24 which is seated therein to normally block the orifice 25 of the fitting. A perforated ball stop element 26 overlies the ball 24 and restricts upward movement thereof.

A Wire screen 21 is disposed over the orifice of 3 the fitting 23 and'is held in place by a threaded flanged sleeve or nut 28 which is secured to the fitting.

The button 9 is secured to the upper end of the rod or plunger I6, and a compression coil spring 29 is carried on the rod between the button 9- and top of plunger guide l8 so as to urge the rod upwardly.

A small transverse opening 30 is provided in the wall of the body 14 at right angles to the bore 15 thereof, and this opening i counterbored and tapped as at 3| to receive an extension element 32 which is bored longitudinally thereof as at .33 to provide a fluid passageway. The end of the bore 33 is enlarged or flared as at 34 to provide a socket or seat for the spherical portion or ball 36 of a nozzle body 35.

The nozzle body 35 is held in place by means of a nut 37 having an annular flange 38, the diameter of which is less than the diameter of the spherical portion 35. A gasket 39 is compressed against the end of extension element 32 by an internal shoulder ill on the nut 31, and this gasket .has wiping-engagement with the ball 35 and seals the universal joint against leakage .of fluid.

The nozzle body 35 is provided with an axial fluid passageway d] which communicates with a transverse diametrically extending channel 42 which leads to the exterior of a portion 43 of reduced diameter of the bod-y 35. The body is provided with a circumferential recess 44 which is adapted to retain a resilient O-ring 45.

The forward end 46 of the portion 43 of the body is frustro-conical in form and the end surface 4'! thereof is provided with four grooves 48 which are located so as to be tangential to the quadrant radii of an imaginarycircle. The depth and length of the grooves 33 is such that they extend to the periphery of the portion 43 for a purpose to be described more fully hereinafter.

A nozzle 43 is threadedly secured to the externally screw threaded portion 53 of the nozzle body 35, the nozzle having .a conical internal face which is adapted to seat against the end 46 of the body. The nozzle is provided with a small central opening 52. The O-ring 45 serves to prevent the escape of fluid between the nozzle body 35 and the nozzle 49. The nozzle and the nozzle body, in combination, cause a fine mist or spray to be formed when fluid is forced therethrough. The divergence of the spray conecan be adjusted by threading the nozzle 43 toward or away from the end surface 3'! of the nozzle body.

In operating the device, the cover '2 and housing 3 are removed and the jar I is filled with the fluid to be sprayed. This fluid maybe water, paint, insecticide or similar non-viscous liquids. The cover 2 and its associated housing 3 is then threaded onto the jar l and secured tightly, the tube portion ll of the pump assembly Ill being thereby immersed in the liquid.

The electromagnet 5 is then energized by closing switch 8, the leads i being suitably connected to an A. C. power supply. In response to energization of the electromagnet 5, the armature or rocker arm 6 will be periodically attracted by the electromagnet .and will move pivotally in a vertical arc. Due to the cyclic nature of the electrical current supply, the arm 6 will be attracted to the magnet at the rate of 60 times per second (if 60 cycles A. C. is used) and each time it moves downwardly, or counterclockwise as viewed in Fig. 1, it engages the button 9 and depresses the plunger 16. The rocker arm 6 and plunger l6 are returned by action of the spring 29.

During a very brief initial period of operation, no spraying action will take place as it is necessary that the tube 22 first be filled with liquid.

-On the initial upstroke of plunger IS, the ball 25 is displaced by the vacuum resulting from the upward movement of the plunger, and liquid is drawn into the tube 22 through the orifice 25 of fitting 23. The wire mesh or screen 21 which overlies the orifice serves to strain the fluid and prevent oversize particles from entering the pump assembly. The upward movement of the ball 24 is limited or arrested by the stop 26. The stroke of the plunger It may, for example, be Y3K so a column of fluid is drawn into the tube 22 at each upstroke of the plunger.

On the downstroke of the plunger, the ball 24 seats in the fitting 23 and closes the orifice 25 thereby preventing the liquid in the tube from flowin back into the jar i. The plunger displaces the fluid and it rises into the annular space between the plunger it and the wall of tube 22.

On the following upstroke the cycle is repeated until the tube 22 and the core 15 of body 14 are completely fllled with liquid. Thereafter, additional strokes of the plunger force the liquidinto the bore 33 of extension element 32 and the passageway 4| of nozzle body 35. The liquid passes to the exterior of the portion43 of nozzle body 35 through the diametrical channel 42. It then passes through grooves 48 which give it a swirling motion of high velocity. The liquid impinges on the conical .face 5! of the nozzle 49 and is ejected therefrom as a spray through the opening 52.

Due to the rapidity of movement of the rocker arm #3 and, correspondingly, of the plunger 16, the liquid is sprayed in what is, for all practical purposes, an uninterrupted steady stream.

During, or prior to, the spraying operation, the nozzle 33 can be moved or directed in any one of several directions, inasmuch as the ball 36 of nozzle body 35 has universal movement relatively to the extension element 32. Thus, as indicated in dotted outline in Fig. l, the nozzle may be directed downwardly While the jar and pump assembly can be retained in a normal upright position. Similarly the nozzle can be directed upwardly or to either side in order to reach hardto-get-at surfaces or to prevent tilting of the jar l.

The nut 31 holds the nozzle body 35 in any selected position, and the gasket 39, which is compressed by the nut 37, serves to prevent any leakage ofthe liquid through the ball and socket joint. From time to time the nut 31 may be tightened to compensate for any wear which may occur.

It will be apparent that I .have provided a handy, compact spraying unit which is characterized by a movable nozzle arrangement thereby permitting the direction of spraying of the nozzle to be independent of the position of the device as a whole.

It is to be understood that the form of my invention, herewith shown and described, is to be taken as a preferred example of the same, and that various changes in the shape, size and arrangement of parts may be resorted to, without departing from the spirit of my invention or the scope of the subjoined claims.

Having thus described my invention, I claim:

1. In an electrical spraying device, an outlet, said outlet having an axial socket of conical form provided thereon, a spray nozzle, an axially channelled ball integral with one end of said spray nozzle, said ball being rotatably seated in said conical socket and the wall of said socket being linearly tangential to said ball, and means for securing said ball against displacement from said socket, whereby said spray nozzle is operatively adjustable to selected positions of angularity relatively to said outlet.

2. A combination as defined in claim 1 wherein said spray nozzle comprises a body with a plurality of circumferentially spaced tangentially disposed grooves in the diametrical plane of the end thereof, a diametrically disposed channel in said body communicatin with said grooves to direct fluid flow thereto, and a conical apertured nozzle element secured to said body and longitudinally 6 adjustable relatively to said grooves to define the 'angularity of the fluid spray cone.

FRANK ZIHERL.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,990,165 Breuer Feb. 5, 1935 2,085,854 Hathaway July 6, 1937 in 2,413,710 Jason Jan. 7, 1947 FOREIGN PATENTS Number Country Date 192,084 Great Britain Jan. 24. 1924

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