US2671693A - Spray nozzle - Google Patents

Description

March 9, 1954,

Filed March 18, 1952 2 Sheets-Sheet l Tncl. A 30], ./29

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SPRAY NozzLE March 9, 1954 c. l.. HYSER E1- AL 2,671,693

SPRAY NOZZLE Filed March 18. 1952 2 Sheets-Sheet 2 ATTO R N EYS Patented Mar. 9, 1954 UNITED STATES PATENT OFFICE SPRAY NOZZLE said Hyser Application March 18, 1952, Serial No. 277,162

6 Claims. 1

The present invention relates to spray nozzles of the type adapted to be fitted to the ends of hoses for connection to water spigots of domestic water supply systems for use, if desired, as hair sprays; and the present application is a continuation-in-part of our copending application Serial No. 206,157, filed January 16, 1951, now abandoned.

The general object of the present invention is to provide such a spray nozzle which is of unusually simple and economical construction, preferably made from a minimum of parts readily assembled by automatic machinery so as to permit rapid and cheap mass production, the assembled units being effectively employable as emcient spray nozzles when attached in a simple manner to suitable liquid or water supply conduits. n

A more specific object of the present invention is to provide such a spray nozzle efhciently featured by a hollow body having an outlet recess in which at least one post is disposed, with a closing plate having at least one hole into which the post is press-fitted with the margin of the plate press-iitted into the mouth of the recess, jet outlet grooves being effectively formed by notches in either the outer edge of the plate or the inner wall of the recess.

Another object of the present invention is to provide such a spray nozzle, preferably comprising only two separate parts, viz. a hollow shell having an outlet recess therein and a closing disc press-fitted into the hollow shell, with jet outlet grooves formed in either the circumferential edge of the disc or, preferably, the inner wall of the recess, and preferably with the disc being formed of material harder than that from which the shell is formed so that edges of the former will bite effectively into the material of the latter as it is seated into the mouth of the recess for secure and efiicient anchorage.

A further object of the present invention is to provide structural embodiments of the device which may be readily constructed and which permit efcient use and operation thereof.

Other objects of the invention will in part be obvious and will in part appear hereinafter.

The invention accordingly comprises the features of construction, combination of elements and arrangement of parts, which will be exemplified in the construction hereinafter set forth, and the scope of the invention will be indicated in the Claims.

For a fuller understanding of the nature and objects of the invention, reference should be had 2 to the following detailed description taken in connection with the accompanying drawings, in which:

Fig. 1 is a side elevation, with parts broken away, of an embodiment of the spray nozzle of the present invention and a supply hose attached thereto by a suitable connector device;

Fig. 2 is a View similar to Fig. 1, but with parts of the spray nozzle broken away and in axial section, taken in a plane normal to the plane of View of Fig. 1;

Fig. 3 is an enlarged axial section of the spray nozzle embodiment shown in Figs. 1 and 2, showing in dot-dash lines the recess closing washer thereof prior to assembly in the shell;

Fig. 4 is a plan view of the outer end of the spray nozzle shown in Fig. 3;

Fig. 5 is a plan view of the inner end of the spray nozzle shown in Fig. 3;

Fig. 6 is an enlarged detail, with parts broken away, showing a portion of the shell flange surrounding the outlet recess and the closing plate press-fitted thereinto to indicate by way of example provision of jet outlets at the margin of the closing plate;

Fig. '7 is a side elevational view, with parts broken away and in section, of another embodiment of the present invention showing the recess-closing washer separate from the shell and as aligned therewith prior to assembly in the shell, with the seated position of the former in the latter being indicated by dot-dash lines;

Fig. 8 is an enlarged detail, with parts broken away, of a modiiied form of the structure at the central post on which the closing washer is seated to indicate the possibility of providing additional jet outlets in the vicinity of the post;

Fig. 9 is a top plan view of another embodiment of the spray nozzle of the present invention;

Fig. 10 is a side elevational View of the spray nozzle shown in Fig. 9 showing a portion of a supply hose connected thereto;

Fig. 11 is a bottom plan view of the structure shown in Fig. 10;

Fig. 12 is an enlarged axial section taken substantially on line l2l2 of Fig. 10; and

Fig. 13 is a cross section to a still larger scale taken substantially on line I3-I3 of Fig. 12.

Referring to the drawings, in which like numerals identify similar parts throughout, it will be seen from Figs. 1 to 6 inclusive that an embodiment of the present invention may comprise a spray nozzle unit lil to which a flexible liquid or water supply hose ll may be or is anchored or connected by any suitable connector device, such as that shown at I2, with the latter being of the type, if desired, disclosed and claimed in Patent No. 2,593,454, issuing April 22, 1952.

Spray nozzle I preferably comprises a body or hollow shell I3 having an outlet recess I4 defined by an inner side Wall I5 and a bottom wall I6 provided by a cross wall or partition I'I. On the cross wall I'I is mounted a post I8 having its free outer end I9 preferably extending slightly beyond mouth 2S of recess I4, for a purpose to be more fully explained hereinafter. ln the embodiments shown in Figs. 1 to 8 inclusive, the post I8 is centrally located and, as in all embodiments it extends outwardly from the recess bottom I6 substantially parallel to the axis of the recess. Preferably, shell I3 is provided as a one-piece molded body of hard or substantially rigid nonmetallic and substantially inelastic material, such as hard rubber compositions, certain synthetic plastic compositions such as polystyrenes, or the like, the selected material preferably being not as hard as the material from which closing plate structure is preferably formed, particularly when the latter is formed from substantially rigid metal, as is preferred.

ln the embodiment shown by way of example in Figs. 1 to 6 inclusive, the shell I3 preferably is molded from a .plastic composition which will form relatively rigid, inelastic molded bodies, such as a polystyrene, or cellulose 'acetate molding composition sold under the trade name Tenita and the like. Shell I3 preferably comprises a one-piece molded hollow body having a neck 2i defining an inlet socket or bore 22 and an enlarged outer end portion provided by an axially-extending flange 23 molded integral with perforated partition II and central post I8 extending coaXially outwardly from the latter. Communication between the inlet socket 22 and the recess Hi circumscribed by flange 23 is preferably provided by one or more holes or passages 25 formed in partition or cross wall I'I during the molding. As will be seen from Fig. 5, there are preferably formed in partition I'I three of they passages Zit-2d symmetrically arranged to assure equal distribution of liquid as it is supplied to the outlet recess I4 while obtaining the desired cross-sectional area of flow passage with maintenance of proper strength. Preferably the post l is tapered slightly outwardly or made substantially frusto-conical so that the cross-section of its outer end I9 is appreciably less than its cross-section 'at its root 25.

In the Fig. 3 embodiment, the side wall I5 of the recess i4 is formed substantially cylindrical and is provided, as is best seen from Fig. 6, with a plurality of outwardly-extending grooves 26-26 to define intervening ribs 21-21 having crowns 22S-28. Such rib and groove structure may be in the nature of knurling or milling but formed in the molding process and preferably V-shape'd, as is best seen from Fig. `6, although other suitable shapes may be adopted and, vof course, the grooves may be spiraled outwardly rather than extending substantially parallel to the axis of the shell structure.

The closing plate structure preferably is in the form of a sheet or disc of metallic material, such as plated brass, etc. In the embodiments shown in Figs. 1 to 8 inclusive the closing `disc is in the form of a washer 29 having a central hole 39 and a margin or lcircumferential edge 3 I. The hole 33 of Washer 29 preferably is of a diameter intermediate the diameters of the outer end i9 and root 25 of tapered post I8 so that with the outer end of the latter extending slightly beyond the mouth 20 of recess I4, as indicated in Figs. l, 2 and 3, the post may be readily slipped into the washer hole for guidance of the washer to its seat in the recess in proper alignment therewith to facilitate assembly of parts.

In the embodiment shown in Fig. 3, the washer 29 preferably is initially cupped or crowned, as indicated in dot-dash lines, so that as it is flattened by suitable die means in the seating thereof, its lateral dimensions will be slightly increased or, that is, its external diameter will become greater, ysnugly to be fitted into the recess. To assemble the two parts shown in Fig. 3, it is a simple matter to flt the washer 29 over the outer end I9 of post I8 and, by a flat-ended die having an axial recess in the end thereof to receive outer 4end I9 of post I8 with clearance, force it down to a press-fitted seating about the post with the edge of the washer hole 30 biting into the post composition. Simultaneously, the circumferential edge 3l of the Washer I9 bites into the crowns 28-28 of ribs 2I-21 on the inner face of head flange 23 as the washer is flattened to a substantially flat plane of disposition in the mouth 29 of recess I4, as shown in Fig. 3. Of course, biting of the hole edge 30 into post I8 stops forward motion of the central .portion of washer 29 so that the circumferential edge 3I may thereafter be moved forward to the same transverse plane by the flat end of the die to accomplish such flattening of the washer. That function could be served by a stepped post, or the like, having a circumferential stop flange and a reduced outer end over which the washer issnugly fitted. It will be seen from Fig. 6 that the external diameter of the washer, referenced 29 in Figs. 3 and 4, is such that, when the latter is flattened, its circumferential edge, referenced 3I in Figs. 3 and 4, will not completely ll up the grooves 26-26 intervening the ribs 21--21 so as to provide a plurality of jet outlets for the chamber defined by the recess I4, washer 29 and partition I'I.

It is to be understood that the jet outlets may be formed by notching the peripheral edge 3| of the washer 29 rather than by means of grooves 26-28 formed in the inner face I5 of recess I4. If desired, additional jet outlets may be provided at the pest I8, as proposed in Fig. 8, by forming grooves 32-32 in the external surface thereof, or such centrally-located jet outlets could be formed by providing notches in the 'edge 30 'of the central hole in the washer 29.

In operation of the spray nozzle shown in Figs. l to 6 inclusive, a supply hose II, preferably equipped at both ends with connector devices of the type indicated at I2, may be suitably connected to a bathroom spigot by one of them, with the other connecting the spray nozzle ID to the other end in a manner understood from the disclosure of the identified Hyser patent. That, of course, would merely consist of inserting the diametrically swelling, axially contractable washer 33 in the neck socket or bore 22 when the connector lever 34 is cocked or extending laterally to the 'side substantially at 90 to the axis of the connector body 35, with the swelling washer 33 of less external diameter than the internal diameter of bore 22. When lever 34 is uncocked or turned down to lie against connector body 35, as shown in Figs. 1 and 2, the external diameter of swelling washer 33 is increased so as z snugly t'o engage the inner Wall of bore 22 to form a Huid-tight joint thereat. The spray nozzle may then be used as a head spray with manipulation of the spigot handle to control flow of water under pressure through the hose II into neck bore 22, and from there via passages 24-24 into recess chamber I4. As ra result, ne jets of water emerge from the plurality of jet outlets provided by the grooves 26-26 and, if employed, the grooves 32-32.

In the event that it is desired to avoid any necessity of proper orientation of the closing washer with respect to the post I8 and recess I4, a modification of the invention shown in Fig. 7 may be employed wherein the side wall I5 of the recess I4 is shown slightly flared out- Wardly toward the mouth 20 of the latter at an angle of a few degrees to the shell axis, preferably about two and one-half degrees (2l/2). The external diameter of the circumferential edge 3| of flat washer |29 is slightly less than the diameter of the recess mouth 20 but appreciably greater than the internal diameter of the recess I4 at the bottom thereof. As a result, it will make no diierence which of the two sides of flat washer |29 is faced downwardly as the washer is slipped over the outer end I9 of post I8. Washer I 29 will be press-fitted inward over the post I 8 in the manner described above in connection with the Fig. 3 embodiment and, simultaneously, its circumferential edge 3| will bite into the crowns 28-28 of the ribs 2'|--2'| without, of course, completely lling up the grooves 29-25 so that the latter may serve a-s jet outlets. Such an embodiment of the present invention not only simplifies assembly procedure but also permits ready use of the face of the washer which is to be exposed to View after seating for bearing identifying or advertising indicia in a simple manner, since both faces of all of the washers in a stock thereof may bear similar indicia making it unnecessary to perform any particular step of orientation of washers.

In the embodiment shown in Figs. 9 to 13 inclusive, spray nozzle comprises an elongated body or hollow shell II3, preferably molded as one piece from suitable synthetic plastic material, such as is shell i3 of Figs. 1 to 7 inclusive. Shell II3 has a similar outlet recess ||4 dened by an inner side wall II and a bottom wall IIS formed by an apertured cross partition structure II'I. Recess |I4 has .a mouth |20.

The one-piece molded shell II3 has a cylindrical neck I2! provided with an inlet bore |22 and an enlarged outer end portion or head |23 in which outlet recess |I4 is formed. The neck bore |22 has a counterbore or enlarged portion |24 which provides therein a circular transverse shoulder 39 for a purpose to be explained later. Preferably recess I I4, neck bore |22 and counterbore |24 are concentric. Counterbore |24 serves as the liquid passage between the neck bore |22 or hose I I anchored therein and the head charnber comp-rising recess II4.

A plurality of tapered posts IIS-I I3 are mounted in the recess II4 on the cross partition III circumambient of or about the counterbore |24, as is best seen from Figs. 9 and 12. The posts IIB-I I8 preferably are tapered or are frusto-conical in shape, and thus are similar in form to post I8. Posts IIS--IIB preferably eX- tend slightly beyond recess mouth substantially parallel to the axis of the spray nozzle |00, as is indicated in Fig. 12.

In the embodiment shown in Figs. 9 to 13 inclusive, the side wall IIE of recess II4 is slightly ared as in the Fig. '7 structure, such as at an angle of a few degrees to the shell axis, preferably about two and one-half degrees (2l/2). A plurality of outwardly-extending grooves 26-26 in recess sidewall II5 dei-lne intervening ribs similar to those of the Figs. 1 to 7 inclusive embodiments.

The closing plate structure 229 preferably is in the form of a sheet or disc of relatively hard metallic material, as in the case of washer |29 of Fig. 7( Disc 229 has a plurality of holes |30-I30 therein arranged in a circle around its central portion in the same pattern as that of posts IIB-IIS, so as to be receptive thereof. Each hole |30 in the disc 229 preferably is of a diameter intermediate the diameters of the outer ends and the roots of the tapered posts I I8-I I9. Thus, with the outer ends of the posts IIS-IIB slightly beyond the recess mouth |20, as indicated in Fig. 12, the posts may be readily slipped into the disc holes I30-I30 for guidance of the disc to its seat in the recess.

The diameter of the circumferential edge ISI of the flat disc 229 is slightly less than the diameter of the recess mouth |20, but appreciably greater than the internal diameter of the recess ||4 at its bottom IIS. Disc 229 will be presstted inward into recess II4 over the posts I IS-I IS in the manner described above in connection with the Figs. 3 and 7 embodiments. The relative dimensions are such that, preferably, circumferential edge IBI of the disc 229 bites into the crowns of the ribs intervening the grooves 26-28 as the edges of the holes IMI-|30 receiving the posts I I8-I I8 bite into the frusto-conical surfaces of the latter in a common transverse plane slightly inward of the mouth |20 and appreciably spaced from the recess bottom IIS, as indicated in Fig. 12. Thus, the disc 229 is supported both by the posts II8-II8 and recess side wall II5. As in the other embodiments the biting of the circumferential disc edge I3I into the crowns of the ribs intervening the grooves 29-26 is of a degree appreciably less than that which would out olf flow through the grooves, similar to the condition depicted in Fig. 6.

It will thus be seen that the spray nozzle structure of the Figs. 9 to 13 embodiment is similar in many respects to that of the Fig. '7 structure. One difference is the provision in the Figs. 9-13 structure of a single communicating passage through the cross partition between the neck bore and the head recess (counterbore |24 of Fig. 12) in lieu of the plurality of passages 243-24 of Figs. 3 and 5. The number of posts constitutes another difference. In each of the Figs. 3 and 7 structures, a single axially-arranged tapered post is used. In the Figs. 9 to 13 inclusive structure, a plurality of eccentrically located tapered posts are provided, each to be received in a separate hole in the disc. Thus, in the Figs. 9 to 13 inclusive embodiment, there are fewer communicating passages and a greater number of disc-anchoring posts; but the functions thereof are similar and assure similar simplicity in construction and production, while providing like eiiiciency in anchorage of the disc in the recess and on the post structure and in use of the resultant spray nozzle.

In the embodiment of Figs. 9 to 13 inclusive, hose II preferably is of elastic material, such as a rubber or synthetic plastic composition, e. g., polyvinyl chloride and polyethylene resins, and permanently anchored in the neck bore |22. Hose end 31 preferably extends substantially to the shoulder 36 formed by the bottom vof counterbore |24. A metallic sleeve or ferrule 38 is seated in the hose end 31 and has a spun over or ared top end 39 seated on shoulder 3S. Such an anchorage of the hose end 31 is quite secure if the diameter of the neck bore 122, outer and inner diameters of the elastic hose ll and the outer diameter of the ferrule S8 are relatively such that the hose end is compressed and clamped by pressure between the neck bore wall and the ferrule when the latter is forced down into the hose end. However, secure anchorage Aof the hose end 3l in the neck bore |22 may be further assured by providing in the latter a plurality of nibs 40 thereabout, or an equivalent circular rib on the bore Wall, to bite into the outer surface of the hose as it is laterally spread with forceful telescope of ferrule 38 into the hose end. Such anchoring nibs 60-40 are readily formed in the simple molding operation for producing the spray nozzle shell I I3 by opposed core plungers meeting substantially in the transverse plane of nib location, notches being formed in the circumferential end edge of one plunger to permit flow thereinto of the molding stock to form the nibs.

It will thus be seen that the objects set forth above, among those made apparent from the preceding description are eiciently attained and, since certain changes may be made in the above construction and diierent embodiments of the invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

It is also to be understood that the following claims are intended to cover all of the generic and specific features of the invention herein described, and all statements of the scope of the invention which, as a matter of language, might be said to l.

fall therebetween.

Having described our invention, what we claim as new and desire to secure by Letters Patent is:

l. A spray nozzle comprising, in combination; a body of substantially rigid material having a chamber recess in one end thereof deined on the sides by a circumambient inner side wall, cross wall means deiining the bottom of said recess and having at least one liquid supply passage extending therethrough to said recess, and at least one anchoring post mounted in said recess on said cross wall means extending in the same general direction of the axis of said recess and having a free end extending outwardly toward the mouth of said recess; .and a substantially rigid closing plate for said recess having its outer edge shaped substantially complementary to a cross-section of the latter and having a hole shaped substantially complementary to a cross-section of sai@l post and located in va similar position of orientation receiving the free end of the latter with that hole and the outer `edge of said plate being of transverse dimensions in a transverse plane appreciably spaced outwardly of said cross wall means about the same as such dimensions respectively of said post and said recess in that plane so that the edge of that hole and the outer edge of said plate respectively are press-fitted to said post and the recess inner side wall to define a chamber between the latter and said plate, one of said plate outer edge and recess inner side wal having outwardly-extending grooves in the face thereof to provide jet outlets leading from said chamber.

2. The spray nozzle as defined in claim 1 siii characterized by formation of said post and side wall from substantially rigid plastic composition. said plate from metallic material, and the grooves in said side wall to provide intervening ribs of plastic composition into the crowns of which the outere'dge of said plate bites without cutting off liquid passage in the bottoms of the grooves.

3. A spray nozzle comprising, in combination; a one-piece hollow elongated circular shell `of substantially rigid plastic composition having an apertured transverse partition means dividing the interior thereof into a liquid supply hose anchoring socket at one end anda circular recess at the other end and having at least one integral post substantially circular in cross-section extending outwardly from said partition means in vsaid recess generally parallel to the axis of the latter, the inner side wall of said recess beine knurled to provide outwardly-extending ribs intervened by jet-forming grooves; and a substantially rigid metallic disc having a circular hole therein with the latter occupying a position of orientation similar to that of said post, the diameters of said hol'e and recess in a transverse plane spaced appreciably outward of said partition means respectively being about the same as the vdiameters of said post and said disc in that plane, said disc being press-tted into the outer end of said recess inward to that plane with the edge of its hole and its circumi'erential edge respectively tightly engaging said post and the crowns of said ribs to provide substantially liquid-tight joints thereat without completely blocking liquid flow in said grooves.

4. The spray nozzle as dened in claim 3 characterized by slight outward haring of the cyline drical recess inner Wall and outward tapering of said post with the diameter of said disc being intermediate of the diameters of circles circumscribed through the crowns of said ribs at the ends thereof at the bottom and mouth of said recess and the diameter of the disc hole being intermediate 'of the diameters of crosssections of said post in the vicinities of its outer end and its root, the edge of said hole and the circumferential edge of said disc respectively biting into the side surface of said post and the crowns of said ribs.

5. A spray nozzle comprising, in combination; a molded plastic elongated shell having a neck circumscribed about a bore providing a substantially cylindrical inlet socket for receptive anchorage therein of a supply hose, an outwardly-extending substantially circular end ange having an inner side wall slightly flared outwardly defining an outlet recess of substantial depth terminating in a wide mouth and having a transverse bottom through which said bore communicates with Isaid recess, a plurality of slightly tapered posts extending outwardly from the bottom of said recess substantially parallel to the axis of said recess toward the vicinity of the mouth of the latter and arranged .about said bore, and a plurality of outwardly-extending integral ribs on the flared inner Vside wall of said recess; and a circular metal disc having a plurality of post-receptive holes arranged about its center in a pat-tern similar to that of the arrangement of said tapered posts about said bore, each hole being of a diameter between the diameters of cross-sections of its received post in the vicinities of the outer end and the root 'of the latter and the diameter of said disc being between the diameters of the bottom and mouth of said dared recess, said disc being press-litted 'down into said recess With said posts received in said holes and with the edges of the latter biting into the frustro-conical surfaces of said posts and the cir* curnferental edge of said disc biting into said ribs without complete blockage of the grooves intervening said ribs.

6. A spray nozzle comprising, in combination; a molded plastic elongated shell having a neck circumscribed about a bore providing a substantially cylindrical inlet socket for receptive anchorage therein of a supply hose, an outwardlyextending substantially circular end iiange having an inner side Wall slightly flared outwardly defining an outlet recess of substantial depth terminating in a wide mouth and having a transverse bottom through which said bore communicates with said recess, a plurality of slightly tapered posts extending outwardly from the bottom of said recess substantially parallel to the axis of said recess toward the vicinity of the mouth of the latter and arranged about said bore, and a plurality of outwardly-extending integral ribs on the flared inner side wall of said recess; a circular metal disc having a plurality of postreceptive holes arranged about its center in a pattern similar to that of the arrangement of said tapered posts about said bore, each hole being of a diameter between the diameters of l@ cross-sections of its received post in the vicinities of the outer end and the root of the latter and the diameter of said disc being between the diameters of the bottom and mouth of said flared recess, said disc being press-tted down into said recess with said posts received in said holes and with the edges oi the latter biting into the frustoconical surfaces of said posts and the circumferential edge of said disc biting into said ribs Without complete blockage of the grooves intervening said ribs; said bore being counterbored from said recess bottom to provide an enlarged portion to receive the head of a clamping sleeve; said hose having an end disposed in said bore; and a substantially rigid clamping sleeve forced into the end of said hose in said bore securely clamping said hose end against the Wall of said bore, said sleeve having a head seated in the counterbored portion of said bore.

CHAS. L. HYSER. IRVING A. LAKE.

References Cited in the le of this patent UNITED STATES PATENTS Number Name Date 2,285,831 Pennypacker June 9, 1942 2,302,366 Bucknell Nov. 17, 1942

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