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Publication numberUS3702173 A
Publication typeGrant
Publication dateNov 7, 1972
Filing dateFeb 19, 1971
Priority dateFeb 19, 1971
Publication numberUS 3702173 A, US 3702173A, US-A-3702173, US3702173 A, US3702173A
InventorsReynolds Elmer N
Original AssigneeReynolds Elmer N
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Sprinkler head
US 3702173 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Nov. 7, 1972 E. N. REYNOLDS $702,173

SPRINKLER HEAD I Filed Feb. 19, 1971 {4 7/72 O f8 m 28 24 ZZ Z; Z 35 38 55 /Z 22 24 74 z /Z INVENTOR,

United States Patent 3,702,173- SPRINKLER HEAD Elmer N. Reynolds, 15915 Arbela Drive, Whittier, Calif. 90603 Filed Feb. 19, 1971, Ser. No. 116,863 Int. Cl. Bb 15/10 U.S. C]. 239-204 6 Claims ABSTRACT OF THE DISCLOSURE A sprinkler head comprising a main body housing, having a threaded cap member secured to the upper end thereof, adapted with an opening therein to receive a sleeve member which is slidably disposed within the opening, and a core assembly being adapted to be rotatably secured within the sleeve member, the core assembly being provided with a frictional clutch assembly which includes a plurality of slip rings, a spring and a lock ring when axially aligned within the sleeve member, allowing the core or nozzle member to rotate by means of a ball striking a base portion of the core assembly.

BACKGROUND OF THE INVENTION Field of the invention This invention relates generally to sprinkler heads and, more particularly, to a pop-up rotatable, fluid-pressure operable sprinkler head.

' Description of the prior art As is well known in the art, various problems and ditficulties are encountered in providing suitable means for watering lawns and the like. Particularly in pop-up sprinklers, that is sprinklers having slidable heads which discharge water as the water pressure forces the discharge head upwardly from the sprinkler body and recedes back into the sprinkler body when the water pressure is turned ed and not in use, many problems relating to material wear, water leakage, high-frictional characteristics, corrosion and, in particular, clogging by foreign material have been encountered. Rotary-type sprinkler heads are generally complex in structure, having many moving parts causing a high percentage of breakdowns. The pop-up type sprinkler heads are disposed at ground level and are, thereby, exposed to additional problems wherein foreign material, such as dirt, grass and leaves, may clog the area around the slidable head, causing the head not to operate properly, or not at all.

SUMMARY OF THE INVENTION The present invention comprises a sprinkler head having a hollow body, threaded at both the upper and lower ends. The upper threaded end receives a cap member and the lower end receives a conventional pipe, or conduit, whereby water may flow into the hollow body. Within the cap member there is provided an opening adapted to receive a slidable sleeve which is forced upwardly as the water pressure increases within the hollow body. Rotatably secured within the sleeve by a threaded bushing is a core assembly which includes a tubular nozzle or core member having a bore therein for passage of water from the hollow body to atmosphere. Rotation of the tubular core is caused by the swirling action of the water which, in turn, causes a ball to whirl upwardly and strike a lug or shoulder projecting downwardly into the interior of the main body, thereby forcing the nozzle to rotate at a specific stabilized rate.

OBJECTS AND ADVANTAGES OF THE INVENTION The present invention has for an important object a.

3,702,173 Patented Nov. 7, 1972 provision wherein clogging of the nozzle head is prevented.

It is another object of the invention to provide a sprinkler head of this character wherein the raised nozzle is moved in a rotary manner in a plurality of increments of rotation.

It is further another object of the invention to provide a sprinkler head adapted with a frictional clutch assembly for smooth and stable rotation of the nozzle head.

It is a further object of the invention to provide a nozzle of this character having a greatly improved operation.

A still further object of the invention is to provide a. pop-up rotary sprinkler which is used at ground level and that does not allow foreign material to enter therein.

It is another object of the invention to provide a device of this character that is simple and rugged in construction.

It is still another object of this invention to provide a device of this character having a relatively long working life.

It is a further object of the invention to provide a rotary pop-up sprinkler head having relatively few operating parts.

It is still a further object of the invention to provide a device of this character that is easy to service and maintain.

It is still another object of the invention to provide a device of this character that is relatively inexpensive to manufacture.

The characteristics and advantages of the invention are further sufficiently referred to in connection with the accompanying drawings, which represent one embodiment. After considering this example, skilled persons will understand that variations may be made without departing from the principles disclosed and I contemplate the employment of any structures, arrangements or modes of operation that are properly within the scope of the appended claims.

DESCRIPTION OF THE DRAWINGS Referring more particularly to the accompanying drawings, which are for illustrative purposes only:

FIG. 1 is a transverse vie'w, partially in section, showing the sprinkler head in a non-activated position;

FIG. 2 is a sectional view similar to FIG. 1 and showing the sprinkler head in an extended operating position;

FIG. 3 is a sectional view taken on line 33 of FIG. 1;

FIG. 4 is a sectional view taken on line 4-4 of FIG. 2;

FIG. 5 is an exploded perspective view of the core assembly; and

FIG. 6 is a fragmentary view illustrating a modification of a portion of the sprinkler head.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring more particularly to FIGS. 1 and 2, there is shown a spray device or sprinkler head, generally indicated at 10. As illustrated, this type of sprinkler head is disposed in the ground 12. and is positioned level thereto. That is, the upper portion of the sprinkler 10 is positioned so that it is just above ground level where the general height thereof is less than the height of the surrounding growth, in order not to interfere with mowing operations which generaly include lawn mowers, grass cutting devices and the like. As shown, the sprinkler head comprises a hollow body indicated generally at 14. The body 14 includes a lower, internally threaded part 16 from which there is a flaring portion 18 terminating in a cylindrical, internally-threaded top portion 20 The portion 18 is intermediate the lower end portion 16 and the upper end portion 20 so that the intermediate portion 18 may be considered as being an inverted frustoconical part.

The sprinkler head includes a top or cap member, indicated generally at 22. Cap 22 includes a centrally positioned opening 24 which is defined by six depending sides, indicated by reference character 26, and each being co-axial with the cap or cover 22. Said depending walls form an inwardly protruding flange member 28, said flange being externally threaded and screwed into the upper threaded portion 20 of the body 14.

The axial bore 24 of the cap 22 communicates therethrough at its lower portion with a chamber 30* which is peripherally defined by flange 32, the upper end of said chamber being defined by the lower wall 34 of the central portion of the cap or cover 22. From the central portion of the cap there extends an annular flange 36 thereabout, said flange 36 being provided with a peripheral rim 38.

A disc 40, adapted with external threads 42, is secured into the lower portion 12 to a position whereat the upper surface of said disc is at the lower end of the intermediate portion 18, said disc forming a bottom member for said intermediate portion. Annularly arranged about the disc 40 are a plurality of slots 44 which are all inclined in the same direction to cause water passing therethrough to swirl upwardly within the interior of the intermediate portion 18, the direction of swirling motion of the water passing said slots being indicated by the arrows 45 in FIG. 2.

The disc 40 is also provided with a plurality of vertical openings 46 therethrough, the axes of which are parallel to the axis of the disc 40. Flow of water or fluid through one of said openings 46 is controlled by a valve member 48 which comprises a flat piece of material which may be of metal, plastic or the like. The valve member is disposed between the head of a screw 49 and the underside of the disc 40 said screw 49 being adapted to be received in said disc.

There is provided a coil spring 50 which lines the interior walls of the intermediate portion 18 and is shaped to correspond thereto. The lower end of the spring 50 engages the annular flange 52 just above the disc 40 and, at this lower end, the coils of the spring 50 are normally in contact with each other. However, the upper part of the spring 50, that is the part of said spring disposed in the upper portion of the body 18, is loosely coiled so that the respective coils are spaced apart, as best shown in FIGS. 1 and 2. It is to be noted that the portions of the spring 50 disposed in the intermediate portion 18 of the body is frustoconical in shape but inverted so that the smaller end of said spring is at the bottom thereof. The upper portion of the spring 50 disposed within the top portion 20 of the body is cylindrical. When the spring 50 is within the body 14 and the cap or cover 22 is screwed into the upper portion 20 of said body, the upper coils of said spring are placed under compression so that, in effect, the entire spring is under compression. It is to be noted that the lower edge of the flange 32 of the cover engages the upper end of the spring 50' and provides a reaction shoulder for the upper end of said spring to resiliently hold spring 50 in the hollow body or housing 18.

As shown in FIGS. 1 and 2, a sleeve member 54 is positioned within the opening or bore 24 and is adapted for axial slidable movement therein. The sleeve member 54 includes outer flat wall 56, corresponding to the walls 26 of the bore 24, and at least one wall thereof is provided with a longitudinal key member 58 which cooperates slidably with a key way 59 within one wall of the bore 24. Thus, it can be seen that the sleeve member 54 is limited to an upward and downward movement within the bore 24 and is held against any rotation. The sleeve member 54 includes a bore 60 at its upper end and an enlarged bore 62 adjacent the lower end, said enlarged bore having internal threads therein.

The upper end of the sleeve includes an end wall having a central conical opening 65 therein. A transverse slot 66 is provided in the sleeve member adjacent the walls 64.

A core assembly indicated generally at 68, is positioned for rotatable movement within the sleeve member 54 and is shown in detail in FIGS. 2 and 5. The core assembly 68 has a tubular portion or nozzle 70' with a closed upper end wall 71, there being provided a pair of annularly, upwardly-directed holes or passages 72 through the walls of the tubular portion or nozzle 70 and positioned adjacent the end wall 71 thereof. The passages 72 communicate with the interior bore 74 of the core assembly. The lower end of the tubular portion 70 removed from the end wall 71 has a collar 76 threadably secured thereto, thus forming a flange in the nozzle 70.

At one side of the nozzle there is a string base portion of the collar 76. In FIGS. 1, 2 and 5 the striking base portion comprises a depending lug 78 which is curved from its inner upper end downwardly and outwardly, and is also curved arcuately outwardly in opposite directions from the inner central region.

As illustrated in the drawings, the core assembly 68 is adapted for deposition with the sleeve member 54 with the passages 72 being in horizontal alignment with the slot 66. The horizontal alignment with the passages 72 is maintained by a frictional clutch assembly, generally indicated at 80. The clutch assembly 80 comprises a threaded bushing 82 having a central opening to receive the tubular nozzle 70 and is provided with an annular flange 83 for supporting a gasket 84. The threaded portion of the bushing 82 is screwed into the threads 63 of the sleeve member 54 and thereby holds the gasket 84 in place therebetween, and serves to provide a seal between the flange 83 and the base of the opening 24, as shown in FIG. 2. A plurality of spacers 86 are positioned between the underside of the bUShing 82 and the upper face of th collar 76 to provide, not only free movement therebetween, but, also, means for adjusting the position of the passages 72 relative to the slot 66. In order to accomplish a frictional engagement between the spacers 86 and the stationary bushing 82, there is provided a biasing means shown as a coil spring 88 superimposed about the nozzle 70 having its lower portion supported against the upper rim of the bushing 82 and its upper portion biased against a retaining ring 90. The ring 90 is removably secured to the nozzle 70 by means of an annular groove 92. The tension of spring 88 is adjustable by the number of spacers 86. Additionally, a segmented deflector 87 is press-fitted within the lower portion of the nozzle bore 74.

Within that portion of the body 14 between the disc 40 and the cover 22, there is disposed a striking means, such as ball 94, which may be of any suitable character, said ball being shown, however, as a steel ball, such as a ball bearing, which may be plated with rust or corrosionresistant material, such as chrome or any suitable material. The diameter of the ball 94 is smaller than the diameter of the lower end of the intermediate body portion 18, and said ball is adapted to be forced upwardly and circularly within the body 14 by the water flowing through the slots 44.

Fluid or water is supplied to the sprinkler head by a conduit or pipe 98 which is vertically disposed and is provided at its upper end with an externally-threaded end portion which is threadably received within the lower end portion of the lower body portion 16.

When the water is turned off and the device is inoperative, the parts are in the position shown in FIG. 1, the sleeve member in the nozzle being telescoped into the interior of the body 14 with the lower end of the lug 78 and deflector 87 resting on the ball 94 which, in turn, rests on the disc 40.

When water is turned into the sprinkler head the water from the pipe 98 flows upwardly through the slots 44 into the interior of the body between the disc 40' and cap 22. There is, also, an upward flow of water through the openings 46 in the disc 40. The water flowing into the interior of the body forces the sleeve and nozzle upwardly to the position shown in FIG. 2 and causes the ball 94 to move in an upward spiral path on the interior of the spring '50. The swirling action of the water causes the ball to twirl around in the spring 50 and, when the ball reaches its upper position, as shown in FIG. 2, it will strike the lug 78 and cause the nozzle to rotate a limited amount. Because of the curved inner surface of the lug 78, the ball will pass over said surface and beyond the lug.

The ball will continue to move around the interior surfaces of the coils of spring 50 and will engage the underside of the flange 64 of the nozzle.

When the ball has moved in its circular path until it reaches the lug 78, it will again strike said lug and rotate the nozzle another increment of movement. This operation will continue as long as there is water supplied to the device. At this point it should be noted that, due to the frictional clutch assembly, the movement of the sprinkler nozzle 70 is stable and smooth, allowing the water to spray in a more even and direct manner. However, the same stable and smooth rotation of nozzle 70 will occur when the alternative arrangement thereof, as shown in FIG. 6, is adopted. The striking base portion of the collar 76 is formed with a recess 79 having striking shoulders 79a spaced about the circumferential area. There are other means for receiving the striking force of the striking means for effecting intermittent rotary movement of the nozzle 70.

It is to be noted that the water flowing through the openings 46 is directed into the interior of the body 14, generally parallel to the axis thereof and the streams of water from the openings 46 will reduce the swirling action of the water entering the interior of the body through the slots 44. While there may be any desired number of openings 46, it has been found that two such openings are satisfactory and, by varying the effective sizes of one of said openings 46 by means of the valve 48, the effective swirling action on the ball 94 may be varied to meet any particular requirements of an installation.

The invention and its attendant advantages will be understood from the foregoing description and it will be apparent that various changes may be made in the form, construction and arrangement of the parts of the invention without departing from the spirit and scope thereof or sacrificing its material advantages, the arrangement hereinbefore described being merely by way of example, and I do not wish to be restricted to the specific form shown or uses mentioned, except as defined in the accompanying claims.

I claim:

1. A rotary nozzle assembly for a sprinkler head wherein the sprinkler head is disposed at ground level and wherein the improvement of said nozzle comprises:

a sleeve member slidably disposed within said sprinkler head;

6 means for limiting rotation of said sleeve member; a nozzle core rotatably secured within said sleeve member and having laterally directed ports adjacent the upper end thereof, and an annular flange disposed at the opposite free end thereof, said flange adapted with a striking base thereon;

a striking means for engaging said striking base, causing rotation of said nozzle;

means for limiting upward movement of said sleeve and said nozzle core; and

a frictional clutch means for controlling the rotational movement of said nozzle core, said frictional clutch means includes:

a bushing threadably secured to said sleeve member; a lock ring removably secured to the upper portion of said nozzle core; and a biasing means comprising a coil spring superimposed over said nozzle core and biased between said bushing and said lock ring.

2. A rotary nozzle assembly according to claim 1, wherein said frictional clutch means includes means for adjusting said biasing means, said adjusting means being positioned between said lower portion of said bushing and said annular flange of said nozzle core.

3. A rotary nozzle assembly according to claim 2, wherein said sleeve member includes a transverse slot in the upper portion thereof to be positioned to overlie said ports of said nozzle core.

4. A rotary nozzle assembly according to claim 2, wherein said means for adjusting said biasing means comprises a plurality of spacers.

5. A rotary nozzle assembly according to claim 4, wherein said striking base comprises a lug depending downwardly from said flange of said nozzle core.

6. A rotary nozzle assembly according to claim 4, wherein said striking base comprises a recess having a striking shoulder disposed within said flange of said nozzle core.

References Cited UNITED STATES PATENTS 2,990,120 6/1961 Reynolds 239-206 X 3,515,351 6/1970 Costa 239206 3,263,930 8/1966 Friedmann et a1. 239--97 X M. HENSON WOOD, 1a., Primary Examiner E. D. GRANT, Assistant Examiner U.S. c1. X.R. 239 206

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3874588 *May 28, 1974Apr 1, 1975Anthony Mfg CorpApparatus and method for improving water distribution from rotary sprinklers
US4371994 *Jun 2, 1980Feb 8, 1983Lester R. MathewsRotational indexing nozzle arrangement
US4687139 *May 3, 1985Aug 18, 1987Imperial Underground Sprinkler Co.Ball drive sprinkler
US4781328 *Mar 26, 1987Nov 1, 1988Rain Bird Consumer Mfg. Corp.Rotating stream nozzle
US4783004 *Aug 14, 1987Nov 8, 1988Imperial Underground Sprinkler Co.Ball drive sprinkler
US4939797 *Mar 29, 1989Jul 10, 1990Sally GhizWater delivery assembly for cleaning swimming pools
U.S. Classification239/204, 239/206
International ClassificationB05B3/04, B05B15/10, B05B3/02, B05B15/00
Cooperative ClassificationB05B15/10, B05B3/0404
European ClassificationB05B15/10, B05B3/04A