US679733A - Hose-nozzle. - Google Patents

Description

No. 679,733. Patented Aug. e, Ism.

c. N. EnGELL. y

HOSE NOZZLE.

(Applicathm led Nov. 14, 1900.)

2 Sheets-Sheet l.

No Model.)

norms Pinzas co., PNOTQLIYM No. 679,733 Patented Aug. 6, |90I.

C. N. EDGELL. HDSE NOZZLE (Application. led Nov. 14., 190D.)

UNITED STATESu PATENT OFFICE.

CHARLES N. EDGELL, OF GARDNER, MASSACHUSETTS.

HOSE-NOZZLE.

SPECIFICATION forming* part 0f Letters Patent N 0. 679,733, dated August 6, 1901.

Application led November 14, 1900. Serial No. 36,481. @T0 Emiel- To a/ZZ whom, it may con/cern:

Be it known that I, CHARLES N. EDGELL, a citizen of the United States of America, and a resident of Gardneigin the county of Worcester and Commonwealth of Massachusetts, have invented certain new and useful Improvements in Hose-Nozzles, of which the following is a specification.

This invention relates to hose-nozzles, and especially to nozzles adapted for use for remens purposes, the object of the invention being to produce a nozzle that will deliver a solid stream of water and throw the same farther than nozzles of the ordinary construe tion.

It is well known that that portion of a stream of water flowing through a tube of uniform bore at the center has the greatest velocity, owing to the friction between the particles of water on the outside of the stream and the interior surface of the tube. It is also a fact that a stream of water issuing from an orice under considerable head contracts or necks together slightly immediately on leaving the orifice, after which it expands into more or less of a spray, so that the stream of water a short distance from the orifice is of i slightly less diameter than the orifice, this stream of smaller diameter being known as the contracted vein.7 In my improved nozzle I provide means whereby only the center of the stream or that of greatest velocity issues from the orifice by providing the discharge end of the nozzle with an efflux-tube, which projects into the interior of the nozzle, the inner end of said tube preferably being of slightly smaller diameter than the interior bore of the nozzle, whereby an annular chamber is left between the inner end of said efflux-tube and the interior of the nozzle, the efflux-tube terminating at its inner end in an annular sharpened edge. The bore of the said eiiluxtube has a general converging shape, and near its discharge end it has a short cylindrical portion which terminates in an enlarged recess, between which recess and the extreme end of the efflux-tube the bore is also cylindrical, but of slightly smaller diameter, this construction being such that as the water issues'from the larger cylindrical bore of the said efflux-tube past the enlarged recess it tends to contract, the contracted portion occurring in the smaller cylindrical bore, so thatwhen the stream finally issues from said eiiinX-tube it is a solid stream without any spraying or ragged effect about its edge. With a nozzle thus constructed a solid stream of water can be thrown a much greater distance than with an ordinary nozzle.

In the drawings, Figure 1 is a view of the nozzle complete. Fig. 2 is a section on the line 2 2, Fig. 1. Fig. 3 is a section on the line 3 3, Fig. 2, looking in the direction of the arrow; and Fig. is a detail of the efflux-tube, showing portions of the nozzle.

The nozzle is designated by 3, it having at one end any suitable coupling et for attachment to an ordinary hose-pipe and at the other or discharge end an effinx tube 5, through which the water is discharged in a solid stream, as hereinafter described. The efflux-tube 5 is preferably secured to the discharge end of the nozzle intermediate its ends, as hereinafter described, the inner portion (5 thereof being of slightly less diameter than the interior bore of the nozzle and projecting into the same, whereby an annular chamber 8 is lett between the interior wall of the nozzle and the said inner portion 6 of the efluxtube, as plainly seen in Fig. 2. The inner end 6 is preferably slightly fiaring, the eX- treme inner end thereof terminating in an annular sharpened edge 7 which is spaced a slight distance from the interior wall of the nozzle.- The bore of the efliux-tube has a general converging shape, the largest portion thereof being at the inner end of the tube aud the smallest portion being at the outer or discharge end. As best seen in Fig. 2, the inner portion 9 of the bore is conical in shape, this conical portion terminating in the cylindrical portion 10, which extends to the annular groove or recess 11, situated a short distance from the extreme outer or discharge attached thereto by any suitable means, such as screws 15, the said fins or blades having the V-shaped edges 16 (see Fig. 3) and being deeper toward the discharge end of thenozzle than at the other end, as seen in Fig. 2. These blades serveto prevent the stream of water passing through the nozzle from as- Jsuming a rotary motion, as would be the case if the bore ot' the nozzle were smooth.

Owing to the friction between the stream of water and the Walls of the nozzle, the particles of water at the outside of the stream lare retarded somewhat, so that the central portion of the stream has the greatest velocity, and the peculiar shape of the efflux-tube 5 serves to receive this central portion of the stream, which has the greatest velocity, and deliver the same, while the outside or slowermoving portion of the stream passes outside the annular edge 7, and hence is not delivered through the nozzle. The stream converges or contracts in passing through the cylindrical portion 9 of the bore, and as it passes through the cylindrical portion 10 and past the annular groove or recess 11 there is a tendency' to further contract or neck together in the same way as when a stream is delivered from an ordinary hose-nozzle. The smaller bore 12 is for the purpose of accommodating the efluX-tube to lthis condition of the stream, the said bore 12 being of such a size as to exactly 'lt this contracted portionv of the stream, whereby the stream when delivered from the nozzle has its minimum diameter.

With this nozzle it has been demonstrated that a solid stream can be thrown a greater distance than with an ordinary nozzle.

Fig. 4t illustrates the preferred way of constructing the efflux-tube and of attaching it tothe nozzle 3. In this construction the said elux-tube is made of two parts or members 6 and 6', the part 6 having the conical bore and the part 6 having the cylindrical bores 10 and 12. The two parts 6 and 6 are provided at their abutting ends with the screwthreaded portions 17 and 18, by means of which the said members are screwed into the cap-plate 19, (see Fig. 2,) and when in place their ends abut each other. The cap-plate 19 maybe secured to the ring 2O by any suitable means, such as screws 21, and the ring 2O is screw-threaded on the end of the nozzle, as best seen in Fig. 2.

Various modifications may be made in the structure without departing from the spirit of my invention as expressed inthe appended Y claims.

'its discharge end a smaller short cylindrical bore, the inner end of the eiluX-tube projecting into the interior of the nozzle and being of smaller diameter than the nozzle whereby an annular chamber is formed around said efflux-tube.

2. A hose-nozzle of substantially cylindrical form having at and within its discharge end an efflux-tube having a conical bore projecting into the mouth ofthe nozzle, the inner end of said eilux-tube being slightly smaller in diameter than the interior bore of the nozzle, whereby an annular chamber is formed around said et'tluX-tube.

3. A hose-nozzle of substantially cylindrical form having at and within its discharge ,end an eiux-tube having a conical bore, said tube presenting at its inner end an annular sharpened edge situated a slight distance from the interior of the bore, whereby an annular space is lett between'the efliuxtube and the interior bore of thenozzle 4. A hosenozzle of substantially cylindrical form having at and within its discharge end an eftluX-tube presenting a converging bore, the inner end of the eftlnx-tube projecting into the end of the nozzle and being of smaller diameter than the interior bore thereof and situated a slight distance from the interior bore of the nozzle.

5. A hose-nozzleghaving in its discharge end an efiuxftube having a conical bore projecting into the mouth of the nozzle, the inner end of said eftluxtube being slightly smaller in diameter than the interior bore of the nozzle, whereby an annular chamber is formed around said efflux-tube, and having intermediate its length a cylindrical bore, and at its discharge end a smaller cylindrical bore.

6. A hose-nozzle having in its discharge end an efliuX-tube having a conical borev projecting into the mouth of the nozzle, the inner end of said efflux-tube being slightly smaller in diameter than the interior bore of the nozzle, whereby an annular chamber is formed around said efflux-tube, and having a cylindrical bore intermediate its length, a smaller cylindrical bore at its discharge end, and an annular groove or recess at the inner end of the smaller cylindrical bore.

7. A hose-nozzle having in its discharge end a. conical eftluX-tube having a conical bore', the inner end of said efuX-tube being slightly smaller in diameter than the interior bore of the nozzle whereby an annular chamber is formed between the efflux-tube and the interior bore of the nozzle which is contracted near the edge of said efflux-tube and enlarged toward the end of the nozzle.

8. A hose-nozzle having in its discharge end an efflux-tube, forming with said nozzle an air-chamber, the entrance thereto being of less transverse'area than said chamber.

Signed by me at Gardner this 30th day of October, 1900.

CHARLES N. EDGELL.

Witnesses:

GEORGE A. PRAY, FRED GRAMMOND.

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