US1983929A - Sprinkler - Google Patents

Description

Dec. 1l, 1934. G. BUELNA ET Al.

SPRINKLER Filed Oct. 19,' 1931 A TTORNEY Patented Dec. 11, 1934 SPRINKLER Guadalupe Buelna and Henry Eugene Jeremie Vacher, Santa Barbara, Calif.

Application October 19, 19.31, Serial No. 569,710

7 Claims. (Cl. 299-67) This invention relates to sprinklers, and particularly to a sprinklerzof the rotary type of the character adapted tosequentially jet or project a stream of liquid, such as water, in a ,selected path of movement. v

An object of the invention is to provide a sprinkler having a selected movement, whereby a given area may be continuously swept with a stream of liquid. In accomplishing the aforesaid object, we may, in one embodiment of Your invention, provide two diametrically opposed noZ- zles, and so arrange the mechanism ofthe sprinkler that liquid is directed from` one of said nozzles during a given arc of rotation,;whereupon further flow of liquid through said nozzle is stopped and the flow of liquid directed through the other nozzle. y particularly useful for the wetting of selected areas of ground, such as on golf courses, and the like.

Another object is the provision `of a sprinkler so arranged that the liability to damage is effectively obviated through provision of various and sundry safety devices incorporated within the sprinkler. l

Another object is the provision of a sprinkler which is simple of construction, efficientl in operation, fool-proof, oi few parts, and generally superior tosprinklers adapted to accomplish a like function. v v

With the above and other objects in view, the invention consists in the. novel and useful provision, formation, construction, association, and relative arrangement of parts, members and features, all as shown in ay certain embodiment in the` accompanying drawing,y described generally, and more particularly pointed out in the claims.

In the drawing: Y

Figure 1 is a vertical sectional view of the improved sprinkler shown as an entirety,

Figure 2 is a sectional view on theline 2.,-z2of` Figure l,

Figure 3 is a sectional view on the line -3- 3 of Figure 1,

Figure 4 is an enlarged fragmentary` detail,

partly in section, of certain locking mechanism used in practicing Vthe invention, and,

Figure 5 is a fragmentary plan view of anele-k Such a type of sprinkler is be noted that the two-part casing has a chamber 5, the chamber being formed by the part 2 of the said casing having a sidewall 6, a base 7, `and an annular flange v8 extending outwardly from the baseand centrally thereof. The jpartB of the casing has a side wall 9 and a top wall 10. Y Thus, when the two'side walls 2 and 9 are threaded together, as shown at 4, the chamber 5 is formed. The top wall. 10 has depending therefrom one or more valve .guides 11. In thepri-isent instance, twovvalve guides are provided, as-,shown at 12 and 13. The'topwall isenlarged, as shown in the drawing, and provided'with one or more bores 14, each bore communicating with a valveguide 11.-A In the present instance, there would be two of said bores. `The Atopr ,wallvis likewise bored, as shown at v15 and 16, said bores communicating withthe bores 14, and-,nozzle members 17 are adapted f for screw-threaded engagement with the walls bounding said bores y15 and 1,6. As shown, these saidnozzlesextend outwardly from the top` wall at an angle to the longitudinal axis of the sprinkler. This so-called'top `wall ,has a chamber -portion 18 formedby'providing an annular wall 19 at what maybe termed a sprinklerl head. This wall is-internally screw-,threaded at 20 and adaptedto haveY screw-threaded thereto a cap 21. As'shownin Figure 2, said top wall is provided with a pairof oppositely disposed segmental ports 22r and 23 and theser said ports communicate between thechambers 5 and 18.

Adapted for movement-withinv the valve guides l1, and likewise within the bores 14 communieatingv with said guides, are poppet valves 24. In the present instance, two poppetvalves are provided. Both poppet valves include a stem 25 having a fairly close t engagement with the bore of the guides 11, with said sternenlarged at 26, finally terminating in a conical-shaped valve head 27. This valve head may be nondetachable from thestem although in thepresent instance, it is held to the stem through the medium of a screw or-the like 28. The bore 14 has a larger diameter `than the enlarged portion 26 of the stem, and said bore is likewise of considerably greater diameter than the diameter ofthe portion 25 of the stern.v One end portion of this; enlargement is annularly beveled, as shown at' 29, and the wall bounding the bore 14 and the bore of the` guide 1l is correspondingly beveled, as shown at 30, to receive the beveled portion 29, although in the present'instance the two parts are not adapted to seat (see the closedvalve of Figure 1). However, the top wall where it communicates withthe chamber 18 is provided with rreo STATES PATENToFFlcE a beveled seat at 31 for receiving the 4valve head 27.

Within the chamber is what may be termed a jetting head 32, the same including a member having a base 33, an annular side wall 34, and a central annular iiange 35 depending from the base. This annular ange is adapted to t within the confines of the ange 8 and likewise extend beyond the end of the ange 8. It will be seen from the drawing that the said jetting head is fairly closelyr conned within` the part 2 of the casing 1. Between the bases 7 and 33 is a bearing washer 36, it being the intention that the casing should revolve relative to the jetting head. The jetting head has spanning the annular side wall 34, a plate 37. 'I'his said plate is provided with one or more passages 38. These said jets are formed by upsetting the metal in the manner shown at 39, so as to have a depending portion extending relative to a surface of the plate, with a port 40 formed between the depending portion and the plate. The ports in each instance are so arranged that the same communicate with the'space included between the base 33 and the said plate, said ports in turn communicating with the opposite surface of the plate. Centrally mounted upon said plate and on what may be termed the exterior surface of the jetting head,`is a cam 41. This cam is in the form of a segmental helix.- As shown, the said cam is held to the plate ,by any suitable means, such as by the screw shown at 42. The cam is so positioned relative to the valve stems, of which there are two in the present instance, that one stem engages the cam at the lowest portion thereof at the timey that the opposite stem is entirely raised. As shown in Figure 3, there is a sudden drop in the cam so that a valve will drop suddenly to close to its seat when the other valve commences to open.

As stated, the casing is adapted torotate relative to the jetting head, and it is essential that the valve stems be protected against damage during casing rotation. Hence, to prevent the abrupt surface of the cam from breaking the stems if the casing was moved in a direction opposite to its normal directionof rotation, we have provided a spring catch. This spring catch includes a stem 43 having a head portion 44 and around which stem and bearing against the head is a coil spring 45. The coil spring, stem and head are adapted to be in part confined within a bore 46 in the cam 41, see Figure'4. We also upset the metal of the plate 37 in the path of said head 44 by striking a portion of it downwardly, as shown at 47, so as'to have an abrupt Contact surface 48 and an inclined portion 49, against which surface 48 the head of the stemy contacts when the casing is moved in its direction of normal rotation.

.Adapted to be loosely carried upon the top of the plate 37 is an annular ring 50. This annular ring is adapted to move against the inner surface of the side wall 9 in a manner to be set forth in the statement o f operation. It is also to be noted that the inner surface of the wall 9 is provided with a pair or"r diametrically disposed segmental indentations 51 and 52.

The annular flange 35 is screw-threaded at 53 and a coupling 54 is secured to said screwthreads, and which coupling in turn directly connects with a pipe 55 leading to a source of liquid supply.

The operation, kuses and advantages of the invention just described are as follows:

Liquid under pressure is adapted to be delivered through the pipe 55 within the connes of the annular flange 35 and against the plate 37. This liquid in turn will pass through the ports 40 and be received within the connes of the annulus 50. The passages 38 are so formed as to direct the iuid against the inner wall of the annulus 50 and in so doing, the annulus is impelled to rotate. 'The annulus has its outer wall surface engaging the inner surface of the wall 9 and this annulus will, therefore, rotate against this surface and in so doing, rotate the casing. It is apparent that the bearing surface for the casing occurs between the annular flange 35 and the flange 8. As the casing rotates, the valves are sequentially raised and lowered. Liquid being directed within the chamber 5 of the casing in turn ilows through the po- rts 22 and 23, and is received in the space included between the valve heads and the cap 21. From here, the liquid flows past the valve head and into the bore 26, thence into the nozzle 17. Within each nozzle is a deector 56. In the present instance, the deflector is a flat plate diametrically spanning the nozzle for the purpose of directing the liquid straight outwardly from the nozzle without giving the liquid a spiral movement. Intermittent ro-tation will occur between the casing l and the annulus 50 when the annulus 50 is received within one of the indented portions 5l or 52 of the wall 9. The casing will be rotated and when the annulus escapes from an indentation, no appreciable rotation of the casing will occur.

In actual use, the said sprinkler may be placed in a given location relative to an area to receive liquid, and it is apparent that rst one nozzle will direct a stream of liquid over a given arc, whereupon flow of liquid through said nozzle will cease, immediately followed by liquid being directed through the other nozzle to cover the same arc of movement. Thus, it is possible to practically continuously direct a stream of liquid over the same area. By varying the number of nozzles as well as the arrangement of the cam, it is possible to direct liquid over any arc desired.

The arrangement of the stop between the cam and the plate 37 is such that when the casing is revolved in a proper direction, the head 44 of the stem 43 engages the stop portion 48 of the plate so that the cam is held against rotation during movement of the casing. It is, of course, understood that the top portion of the casing is revolved, which top portion has the valves mounted therein. When reverse direction of the casing is attempted, the cam is released, the head 44 sliding upon the gradually curved portion 49, with the result that a stem of a poppet valve engaging the abrupt end wall of the cam, simply rotates the cam relative to the plate and the screw 42.

The annulus 50 is of a sucient diameter to at all times form an enclosure for that portion of the plate having the jets, and said annulus is always eccentric to the casing during operation of the sprinkler.

The poppet valves may be of the gravity ac-V tuated type due to the fact that liquid under pressure is directed against the heads thereof. The valves are, therefore, raised through the simple expedient of the cam to permit liquid to flow past the heads and stems into the nozzles.

It is obvious that various changes and modioations and variations may be made in practicingV the invention in departure from the particular showing of the drawing without departing from the true spirit of the invention.

We claim:

1. n a sprinkler of the character disclosed comprising a water conveying and jetting device, a casing, means within said casing and acted upon by the water jetting device to rotate said casing, a sprinkler nozzle carried by the casing, a cam, and a poppet valve operated by said cam to alternately open and close communication between the casing and said nozzle during a given rotation of said casing.

2. A sprinkler of the character disclosed cornprising a casing formed with opposed outlets, sprinkler nozzles fitted in said outlets, a liquid jetting device within said casing and arranged to be in communication with a source of liquid supply, means within the casing adapted to be acted upon by liquid jetted through said liquid jetting device to rotate said casing relative thereto, a cam, and poppet valves engaging the cam for alternately opening and closing the outlets through said casing during rotation thereof.

3. A sprinkler comprising a casing, a pair of` poppet valves to control passage of liquid through the casing and outwardly thereof, said casing being constructed to be rotated, means arranged to alternately open and close a poppet valve during rotation of said casing in one direction, and means whereby the rst named means is nonrotatable in the direction of normal rotation'oi said casing.

4. A sprinkler comprising a casing, a jetting head within said casing, said casing being adapted to revolve relative to the said jetting head, said jetting head including a plate formed with passages, means whereby a liquid may be passed within said jetting head and outwardly through said passages into the interior of the casing to produce rotation of said casing, a nozzle secured to the casing, a poppet valve mounted in a valve Areceiving port in communication with said nozzle .and the interior of the casing, and means whereby said poppet valve is opened and closed during rotation of the said casing to control passage of liquid through the casing and outwardly of the nozzle during rotation of the casing a selected degree of revolution.

5. A sprinkler comprising a rotatable casing having two separated chamber portions and a port therebetween, a gravity actuated poppet valve formed to extend between said chamber portions in the casing, cam means for positioning the poppet valve during rotation of the casing, a nozzle secured to the said casing, said casing being adapted to receive a liquid in one chamber t be transmitted through said port to the other chamber, and said poppet valve when in one position permitting said liquid to pass through said last chamber into said nozzle and in a second position to close the passage between said last chamber and said nozzle.

6. A sprinkler comprising a casing having two separated chamber portions and a port therebetween, a poppet valve formed to extend between said chamber portions in the casing, cam means for positioning the poppet valve during rotation of the casing, a nozzle secured to the said casing, Said casing being adapted to receive a liquid in one chamber to be transmitted through said port to the other chamber, and said poppet valve when in one position permitting said liquid to pass through said last chamber into said nozzle and in a second position to close the passage between said la-st chamber and said nozzle, in combination with means in one of said chambers adapted to produce rotation of said casing when liquid is received therein.

'7. A sprinkler comprising a casing having two` separated chamber portions and a port therebetween, a poppet valve formed to extend between said chamber portions in the casing, a nozzle secured to the said casing, said casing being arranged to receive a liquid in one chamber to be transmitted through said port to the other chamber, said poppet valve when in one position permitting said liquid to pass through said last chamber into said nozzle and in a second position to close communication between said last chamber and said nozzle, in combination with means in one of said chambers adapted to produce rotation of said casing when liquid is received therein, and cam means to open and close said poppet valve during rotation of said casing.

GUADALUPE BUELNA. HENRY EUGENE JEREMIE VACHER.

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