Sprinkler

Application filed May 25, 1920. Serial No. 384,017.

To all whom it may concern:

Be it known that I, Oscar F. Engel, citizen of the United States, residing at Hartford, in the county of Hartford and State 5 of Connecticut, have invented certain new and useful Improvements in Sprinklers, of which the following is a specification.

This invention relates to sprinklers. I have a number of motives in view among 10 them being the provision of an article of the character described which is capable of inexpensive production and by which an area may be properly and uniformly sprinkled. The sprinkler is of such character that the 15 area covered by it instead of being circular or virtually so, is rectangular or practically square in view of which circumstance it requires with the present sprinkler less water to wet down a certain area than, with those' 20 which cover an approximately circular surface. The sprinkler is of. course . capable of general use although it is especially intended for sprinkling lawns.

With the above general objects in view 25 and others that will appear as the nature of the invention is better understood, the same consists of the novel form, combination and arrangement of parts hereinafter more fully described, shown in the accompanying 30 drawing and claimed.

In the drawing, wherein like. reference characters designate corresponding parts throughout the several views,

Figure 1 is a transverse section of a 35 sprinkler involving the invention.

Figs. 2 and 3 are cross sections of the rose or sprinkling portion taken on plans different from each other and from that of Fig. 1.

Fig. 4 is a top plan view showing by dot40 ted lines on a smaller scale, the rectangular field covered by the sprinkler.

Like characters refer to like parts throughout the several views.

The sprinkler comprises a body or shell 45 2 which may for instance be formed by casting, and a cap such as the rose or operative portion 3 usually made from sheet- metal. As illustrated the body or shell 2. is practically cylindrical and obviously it is hollow 50 or chambered. The cap, rose or operative portion 3 is of part spherical shape. As illustrated the wall portion of the/body or shell 2 has on the upper side thereof, the circular rabbet 4 in which the lower, edge of 55 the cap, rose or operative portion 3 is closely fitted and permanently held in some watertight manner, As will be inferred the cap, rose or operative portion has a multiplicity of jet openings which will be hereinafter described. The water may be supplied , to 60 the sprinkler in any desirable way. For instance the body or shell may have near its base on the outer side thereof the nipple 5 with which for instance a hose or pipe may be connected so that on the passage of water 65 through the hose or pipe this will enter the body- or shell 2 and will be discharged through the perforations or openings of the cap, rose or operative portion 3 thereof.

As shown the rose or operative portion of 70 the sprinkler has four series or groups of orifices or jet openings as 6, the openings of the respective groups being substantially radially arranged and being along lines approximately ninety degrees apart. The 75 water passing through these orifices or jet openings 6 delivers the longest streams and this is accomplished by making the trajectories of the streams issuing from said openings or orifices .6 lower than those emerging 80 from the groups of orifices between those denoted by 6. The orifices 7, 8, 9,10, and. 11 are between the orifices 6 of the respective series. The trajectories of the orifices 7 and 11 are higher than those issuing from the 85 orifices 6 and as a result the streams emerging from the orifices 7 and 11 are shorter than the streams issuing from the orifices 6. In like fashion the streams issuing from the orifices 8 and 10 are shorter than those issu- 90 ing from the orifices '7 and 11 their trajectories of course being higher. Again the streams issuing from the extreme middle orifices 9 are shorter than those issuing from the other orifices their trajectories being the 95 maximum height. As a consequence of this condition the surface covered by the liquid will be rectangular and desirably square. This is an important advantage obviously because less water will be required to cover 100 a field made up of a series of rectangular areas than would be requisite to wet down a similarly sized field where the areas covered are circular. So that the orifices in the cap 3 may be properly positioned to ac- 105 curately direct the streams emerging therefrom, said orifices are formed at the bottoms of indentations or apertures 3' which are shaped a little differently from each other in order to obtain the requisite result. It no. will be noticed that the several orifices to which I Have referred are formed in the

S 1,400,533 bottoms of recesses-in the cap or rose 3 of : the sprinkler. This is important in that the streams are accurately delivered without waste or loss.