Improved Combined Circular Spread and Centre Jet Nozzle for Fire Appliances and other purposes.
Year: 1896

page_text: Date of Application, 2nd Apr., 1896
Complete Specification Left, 1st Jan., 1897-Accepted, 13th Mar., 1897
Improved Combined Circular Spread and Centre Jet Nozzle for Fire
Appliances and other purposes.
JOHN SHONE, Superintendent and Engineer to the City of Chester Volunteer Fire
Brigade of No. 8 King Street in the City and County Borough of Chester in the
County of Cheshire do hereby declare the nature of this invention to be as
follows:-
Improvements in hose and pipe nozzles for extinguishing fires and other purposes.
One object of this invention is to construct a nozzle to throw a good stream of water
in a complete circle, and also a solid jet out of the centre at the same time, and which
circular spread and centre jet can be used and controlled to any size or shut off
separately or both together.
The nature of this invention relates first to the arrangements and construction of
hose pipe nozzles with a circular spread which is provided with a sleeve and regulated
opened, raised partly, or wholly by a worm at its base, and closed against a flange at
end which forms a complete valve seating and when closed completely shuts off
circular spread.
The center jet is regulated and controlled by a cone valve as discribed in
Specification No. 1389, A.D. 1876 which adjusts the stream of water to required size
or completely shuts it off the nozzle is designed so as to control the water at the
will of the man who is useing it and to economize the water used and avoiding
unnecessary damage by excessive use of water.
The above improvements in nozzles applies to the adaptation of the same
fittings or fixtures with or without the controlling appliances in buildings, business.
premises mills factories and other suitable places as a protection against fire and other
purposes.
D
1
1004
Improved Combined Circular Spread and Centre Jet Nozzle for Fire
Appliances and other purposes.
I, JOHN SHONE, of 8 King Street in the City and County Borough of Chester
and County of Chester, Superintendent and Engineer to the City of Chester
Volunteer Fire Brigade, 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 hose and pipe nozzles and more especially to such nozzles
as are employed in extinguishing fires. Its object is to construct the nozzles in such
a manner that they shall be able to throw a central solid jet and a shield or circular
spread of water, or either of them alone, and so also that both the jet and the shield
or either of them may be cut off at the nozzle when desired. The shield or circular

page_text: ..
spread of water consists of a film adjustable in thickness, having a shape resembling
that of the surface of a cone having its apex in the axis of the nozzle. The use of
this shield enables a fireman to approach quite close to the locality of a fire, as it
both drives the smoke away and acts as a screen to the heat. Thus, in entering a
room where there is a fire to be extinguished, the fireman first turns on the shield :
then, having by its aid been able to ascertain the precise position of the fire, he may
turn on the solid jet and extinguish the flames with the minimum damage to turniture
and goods by water.
I will describe my said invention with reference to the accompanying drawings in
which :-
Figure 1 represents a longitudinal section:
Figure 2, a cross section taken along the line x-y, and
Figure 3, a similar section taken along the line y-z in Figure 1.
At the base of the nozzle there is a nut A, by means of which the nozzle may be
attached to the hose or pipe. This nut is secured upon the lower cylindrical part B,
the surface of which is smooth. Outside this part there is a sleeve C, the inner
surface of which is screwed or chased with a female screw thread as indicated. D is
the body of the nozzle upon the end of which further from the nut there is a tubular
part E, capable of longitudinal adjustment parallel with the axis of the nozzle. As
shewn, this adjustment is effected by means of an external screwed part F, on the
body of the nozzle, and a corresponding internally screwed part of E. Within the
upper part of the nozzle, the wings G, carry a ring H, into which is screwed or
fitted the central jet tube I, the outside of the outer end of which is flared or trumpet
shaped, as shewn. The inner edge of the outer part E, is bevelled to fit the flared
part of I. Between the flared part and the correspondingly bevelled part there is
thus formed an annular opening of conoidal form J, which may be made narrower or
broader or be closed altogether by turning the part E, upon the nozzle.
Within the lower cylindrical part B, there is inserted a second closely fitting
cylindrical part K, in which are constructed two parallel walls L, longitudinally
bulged at the centre, where an axial bore is made for the reception of the stem M, of
the valve N. The space between the walls L, opens through the walls of the
cylinder K, on each side, and slots O, corresponding with these openings, are
formed longitudinally through the cylindrical part B. A slot of the same width,
but much shorter, is made through the stem M.
These slots and openings, being brought into line, bave passed through them
the cross bar P, the ends of which are cut or serrated to gear with the screw
thread in the sleeve C, so that when this sleeve is turned, it will cause the stem
and the valve N, to move axially in one direction or the other. When moved
sufficiently far in one direction, the valve closes the entrance to the jet tube I,
and when moved in the other direction it opens the entrance to that tube.
The central jet issues from the tube I, and the circular spread or shield from
the annular space J, and it will be seen that by rotating the parts C and E,
either or both the water exits may be opened or closed or that the liquid may be
caused to issue at any rate that may be desired within the limits of the capacity
of the nozzle and of the effective pressure.
The course of the water through the nozzle is along each side of the walls L,
and alongside the valve N, then through the jet tube if open, and past the
wings G to the annular exit J also if open.
I desire it to be understood that I do not separately claim the valve N with
its stem and the described devices for moving it longitudinally as part of this
invention, as they are well known and are described in the Specification of Letters
Patent No. 1389 dated the 31st day of March A.D. 1876.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. In hose and pipe nozzles, the combination and arrangement of a central jet

page_text: tube, an adjustable part concentric therewith, an annular conoidal exit between
the jet tube and the outer part, a valve capable of closing the jet tube, and known
devices or appliances for moving the valve axially, substantially as hereinbefore
described and as illustrated by the accompanying drawings.
2. In hose and pipe nozzles, a central flared or trumpet shaped part, and a
concentric bevelled part capable of being moved backward or forward with
reference to the axis of the nozzle, so as to produce or to close an annular
conoidal exit substantially as hereinbefore described and as illustrated by the
accompanying drawings.
Dated this 16th day of December A.D. 1896.
W. E. HEYS & SON,
Agents for the Applicant.