US2283985A - Shutoff nozzle - Google Patents

Description

May 26, 1942. J. w. GRANT ETAL SHUT-OFF NOZZLE Filed March 12, 1941 QM mm m W N Tm R m m vNfiT mN A R WH &,Y a

lllll Patented May 26, 1942 pr sreras rer orric Jordan W. Grant, Portsmouth, Va.., and Henry M.

Hunt, Wooster,- Ohio, assignors to AkronBrass V Manufacturing Company, 1110., Wooster, Ohio,

a corporation of Ohio Application ach 12, 1941, Serial No. 382,956

'2 Claims. (.01. 251-113) This invention relates to improvements in nozzles and more particularly to shut-offnozzles of the type commonly employed with a fire hose;

It is essential in fire fighting'equipmentj to,

eliminate the disturbance in the stream caused by the formation of annular recesses or projections within the discharge end of the nozzle. When the stream flows over the recesses or projections within the nozzle the column of water discharged therefrom is characterized with spent drops, spray or Spindrift. On the other hand if the inner surface of the nozzle is uninterrupted a sharply defined column free from spray may be discharged therefrom with the result that such column may be directed upon the objective with greater force and less danger of cross wind deflection. v

One of the objects of the present invention is to construct a shut-off nozzle comprising a plurality of adjustable parts arranged in seated re lation with each other to provide a smooth and uninterrupted surface therethrough irrespective of adjustments therebetween.

Another object of the invention is to provide a shut-01f nozzle having a sleeve disposed in the discharge end thereof with a conical nozzle tip engaging the outer end of the sleeve and nozzle to facilitate the discharge of a fluid stream free from spindrift.

Further objects of the invention are to provide a shut-off nozzle which is reliable and efficient in service, economic of manufacture, simple of,

ancillary to the foregoing and the manner in which all the various objects ar realized will appear in the following description, which considered in connection with the accompanying drawing, sets forth the preferred embodiment of the invention.

Referring to the drawing wherein the preferred embodiment of the invention is illustrated:

Fig. 1 is a side view of the shut-01f nozzle and nozzle tip embodying the present invention, a portion of the nozzle and nozzle tip being broken away and shown in section in the interest of clarity;

Fig. 2 is an elevational view of a fragmentary portion of the nozzle casing with a portion thereof shown in section to illustrate the construction thereof;

Fig. 3 is an elevational view of a sleeve with a portion thereof shown in section;

Fig. 5 is an elevational View of a collar for retaining the packingring in place, a portion of the collar being shown'in section; and 'Fig. 6 is an elevational view of a fragmentary portion of- Ithe nozzle tip with a portion thereof shown-in section.

Referring to Fig. 1,-there is shown a shut-01f hose nozzlecomprising a casing in having axially aligned inlet and outlet ports II and I 2 with a ball valve I 3 interposed therebetween. The valve is secured to a shaft which has a handle [4 afiixed to one endthereof for rotating the ball valve to its open or closed position. The ball valve employed herein is of the form disclosed in Patent No. 1,746,609 to John C. Schellin. A detailed description thereof is, therefore, deemed unnecessary apart from such general reference as may be necessary for a complete understanding of the invention.

The outlet port l2 has a sleeve l6 disposed therein with theinner end I! of the sleeve formed 7 for intimate engagement with the globular surface of the ball valve IS. The inner end i! of the sleeve is ground to fit snugly upon the ball valve l3 so as to prevent the leakage of fluid therebetween when the valve is in either its open or closed position. The internal diameter of the sleeve 16 is equal to the diameter of the fluid port through the ball valve l3 to provide a smooth and uninterrupted surface for a stream flowing through the nozzle. The external diameter of the outer end portion of the sleeve I6 is slightly less than the external diameter of the valve engaging end portion of the. sleeve to provide a shoulder 20 to seal the nozzle against the leakwith a portion thereof shown in section;

age of any fluid therethrough or seepage between the ball valve [3 and end I! of the sleeve result ing from wear.

A tapered nozzle tip 25 formed with an enlarged end 26 is threaded on the casing l0. The. enlarged end 26 is provided with a beveled inner f zle tip 25 upon the casing l0 urges the end I1 of the sleeve l6 into engagement with the surface of the ball valve I3 and prevents the escape of fluid therebetween. The internal diameter of the nozzle tip 25, at its juncture with the beveled end of the sleeve I6, is equal to the internal diameter of the sleeve so that a smooth, continuous and uninterrupted fluid passageway is provided through the shut-oft nozzle and nozzle tip.

In the assembly of the shut-ofi hose nozzlethe seating of the beveled inner surface of the nozzletip upon the complementary surface of the end of the sleeve provides a smooth, close fit therebetween, thus causingthe fluid stream to flow through the shut-off nozzle and nozzle tip without disruption or agitation.

Although the foregoing description is necessarily of a detailed character, in order that the ball valve I3 is' mounted within the casing [0 in tween. The enlarged end 26 of the nozzle tip 25 is then threaded upon the external surface oi the casing III with the beveled inner surface engaging the outer end 'of the sleeve l6 forretaining the end portion l'lthereof in intimate engageinvention may, be completely set forth, it is to be understood that the specific terminology is not intended to be restrictive or confining, and that various rearrangements of parts and modifications of the detail may be resorted to without departing from the scope or spirit of the invention as herein claimed.

We claim: r 1. In a shut-off hose nozzle embodying a casing' having a bore therethrough, a ball valve mounted therein, a cylindrical tubular member ment with the spherical surface of theball valve to prevent'the leakage of fluid therebetween. The ball valve I3 may be rotated to either its open or closed position upon the actuation of the handle M for. controllingthe passage of. fluid through the shut-off nozzle and nozzle tip.

engaging said ball valve and terminating at one end of-said bore, a ledge formed on the periphery of said cylindrical member intermediate its ends, a shoulder on said bore adjacent said ledge, a

ring encircling said member and seated on said ledge and shoulder, and means within said bore engaging said ring to seal said borewith respect to said member.

2. Inta shut-off valve embodying a casing have ing a bore therethrough, a ball valve mounted therein, a cylindrical tubular member in said bore having one end seated on said ball valve with 1 the other end terminating at an end of said bore, a ledge formed on the periphery of said tubular The provision of a sleeve or lininghaving a bore equal to that of the fluid port in the ball valve provides a smooth, continuous and'uninterrupted conduit through the shut-off nozzle for the passage of a fluid stream. The smooth 'and uninterrupted passageway extendingthrough the shut-off nozzle overcomes any tendency of the stream to become agitated and insures the. disor tangential jets or spray. Furthermore, the

charge of the fluid stream without any spindrift member intermediate its ends, a shoulder on said bore adjacent said ledge, a packing ring seated on said ledge and shoulder, a collar encircling said tubular member and threaded within said bore, said collar engageable with said ring to seal said bore with respect to said tubular member.

. JORDAN W. GRANT.

HENRY M. HUNT.

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