Improvements in or relating to Nozzles.
Year: 1896

page_text: Date of Application, 18th June, 1895-Accepted, 8th Aug., 1896
COMPLETE SPECIFICATION.
Improvements in or relating to Nozzles.
I, WILLIAM WEAVER STEWART, Physician, of 11, Fifteenth Street,
Columbus, Georgia, United States of America, do hereby declare the nature
of this invention and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement:-
This invention relates to certain improvements in or applied to nozzles, and it is
applicable to nozzles adapted to emit a central straight and solid jet or a central
spray, and also a lateral or conical spray, or partly applicable to nozzles for
emitting such straight and solid jet or equivalent spray only.
In the annexed drawing;
Fig. 1 is an elevation of the improved cut-off nozzle or tip of that type which
has no provision for lateral or conical jet, Fig. 2 is a longitudinal section thereof.
Figs. 3 and 4 are plan views thereof, of which Fig. 3 shows the passage way in the
cut-off nozzle closed and Fig. 4 the same open.
Fig. 5 is a longitudinal section and Fig. 6 a plan or end view of the improved
nozzle of that type in which provision is made for both central or direct and lateral
or conical jets or sprays.
At a
Referring more particularly to Figs. 1 to 4 the invention relates to an improved
construction for cutting off or controlling the passage of water through the nozzle.
A represents the case or body of the nozzle, having at its one end interior screw
threads a for the reception of the coupling of a hose, and at its other and smaller
end exterior screw threads 6 for the reception of the nozzle tip or outlet B.
suitable place in the wider part of the body A there projects laterally a cylindrical
screw threaded boss and diametrically opposite thereto a similar boss b¹, said
bosses having through them cylindrical passage ways open into the interior of
the body A and also at the exterior of the bosses. Around the outer edges of
these passage ways the bosses have annular recesses 63. Through the bosses 61 61
pass trunnions C which are for the greater part of their length cylindrical.
Around each trunnion C is a collar c¹ adjusted to the recess 63 and the part of the
trunnion inwards of said collar fits the passage way through which it passes.and
in which it is intended to revolve, the inner end of the trunnion extending into the
interior of the body A and ending in a prismatic head for a purpose hereinafter
described. D is a cap having screw threaded part d to engage the screw threads
surrounding the boss band having a passage way d' through which the cylindrical
part of the trunnion exterior of the collar el passes. E is a rubber or other
washer within the cap D for rendering the passage of the trunnion water tight.
Through each trunnion exterior of the cap D is a hole or passage c³ to receive the
end of a bail F which connects the two trunnions by this means and serves as a
lever for turning the trunnions simultaneously through a quadrant of a circle or
less. The ends of the bail may be fixed in the trunnions by means of set screws
as at ff.
Within the body A, the prismatic ends of the trunnions engage in similarly
shaped holes in a rotary valve G usually in the form of a sphere traversed by a
passage way g' of considerable diameter. Forward of said rotary valve, the
body A of the nozzle is narrowed and extends cylindrically, and into this part is
loosely slid a hollow cylinder H the inner end of which forms a seat accurately
fitting to the valve while the outer end preferably projects slightly beyond the

page_text: edge of body A. The interior diameter of this cylinder H is preferably the same
as that of the passage way g' in the valve G.
Between the nozzle tip B and the ends of the body A and interior cylinder H
is a rubber or other elastic washer J to render the joint water tight, anl to give
elasticity to the valve seat.
Referring to Figs. 5 and 6 the construction above described is applied to the
central or straight jet or spray. In place of or previous to narrowing the body A
forwards of the valve G in order to fit closely upon the interior tube H, a space lis
left around the tube H or part thereof and in the wall of the body A. in this part
are ports giving passage for the water from space into an outer annular
chamber formed by the sleeve L. At the rear end this chamber is closed or
made watertight by connection of the sleeve L with body A, for instance by screw
threads and by two parallel flanges carrying between them packing; at the
forward end a passage way 13 is left between body A and sleeve L, in front of
which is a deflecting flange . The forward end of the sleeve L is screw threaded
and the flanged ring L' is screwed thereon. Such flanged ring forms a counter
part to the flange 14 and by screwing the ring only to the right or left the
direction or angle of the jet is controlled, while by rotating the body L the
passage 13 may be closed by bringing the seat against the flange 1.
It will be obvious from the foregoing description and from the drawings that the
valve G in this construction operates only to control or close the central jet from
the nozzle tip, and that the water may pass freely around the valve G at all times
into the space whence it will pass to chamber and issue in the form of a hollow
conical spray from between the flanges L', the latter spray being controlled in
volume by the sleeve L, independently of the central jet, the ring L' controlling
only the direction or angle of the conical spray.
Having now particularly described and ascertained the nature of this said
invention and in what manner the same is to be performed I declare that what
I claim is ;-
1. The combination of a nozzle body, a nozzle tip thereon, an elastic washer
within said nozzle tip, a rotary valve within the body and a tube within said body
having bearing at one end against the rotary valve and at the other end against the
elastic washer, and serving for passage from the valve to the tip.
2. The combination of a nozzle body, trunnions traversing the walls of said body,
stuffing boxes for said trunnions, a rotary valve detachable from said trunnions and
a tube within said body with means for elastically pressing the same against said
valve substantially as set forth.
3. The combination of a nozzle body, a valve seat therein, a rotary valve body
within said nozzle body having a passage way there through transverse to its axis
of rotation and prismatic recesses in said axis, trunnions having prismatic heads to
engage said recesses and collars to limit their intrusion into the nozzle body,
washers and caps for rendering the passage of said trunnions through the walls of
the nozzle body water tight, and an elastic hearing for said valve seat.
4. The combination of a nozzle body, a nozzle tip thereon, an elastic washer
within said nozzle tip, a rotary valve within the body a tube within said body
having bearing at one end against said rotary valve and at the other end against
said elastic washer, the said tube being spaced from the wall of the nozzle body, a
bye-pass by the rotary valve or around the same to said space and a sleeve
surrounding the nozzle body and forming in conjunction therewith or with a flange
thereon means for emitting a conical jet, said sleeve being in communication by
ports in the wall of the body with said space therein.
5. In a nozzle the combination with a nozzle body, of a rotary valve therein,
trunnions adapted to be inserted from outside the body to engage the valve, a tube
within the body having bearing at one end against the rotary valve and means for
elastically pressing said tube and trunnions inwards and for tightening the same
substantially as described.

page_text: 6. The combination with a nozzle body, of a sleeve L thereon movable endwise
and having at its end a seat adapted to be brought against a flange on the body to
close the passage or control the volume of flow, said sleeve having on it a ring Li
movable end wise on the sleeve to control the direction of flow of the conical jet
emitted.
7. The construction of nozzle and parts thereof, with or without lateral spray,
substantially as herein described and illustrated in the annexed drawing.
Dated this 18th day of June 1896.
HERBERT HADDAN & Co.,
18 Buckingham Street, Strand, London, W.C.,
Agents to Applicant: