Year: 1897

page_text: We ALFRED GEORGE BROWNING, of 5 Oakland Villa, Flixton near Manchester, in
the County of Lancaster, Engineer, and WILLIAM WILD CHURCHILL, of 15 Princess
Street, Manchester, aforesaid, Shipper, do hereby declare the nature of this invention
to be as follows:-
This invention relates to apparatus for supplying a very fine spray for air and
water or other fluid to humidify or disinfect the air of a room, or for other spraying
purposes, and especially to apparatus wherein fluid and air under pressure are ejected
together from a nozzle or jet, in the form of two concentric tubes leading to the
orifice or orifices of the jet.
The invention so far as regards the construction of the jet or nozzle consists in
the first place in forming the orifice or orifices or outlet or outlets of the jet in a
cap which can slide upon the open end of the external tube by screwing it into a
stuffing box capable of adjustment by screwing or otherwise upon the said external
tube, and thus the orifice of the jet can be adjusted with the greatest accuracy
nearer to or further from the mouth or outlet of the internal tube without interfering
with the packing.
The internal tube is screwed or otherwise secured to the rear end of the external
tube and bent or cranked (say downwards) to a coupling with the supply pipe, and
is provided with a suitable regulating valve in this outer or rear part.
The external tube is also provided with a branch leading (say downwards) to its
coupling with the supply pipe and this branch is provided also with a regulating
valve.
The two supply pipes are connected together by suitable pipes or tubes, and so,
by regulating the issue of the air to the nozzle and its egress from the nozzle, more
or less pressure can be put by the air upon the water to force the latter through the
nozzle, and the air will act upon it as it issues from the orifice or orifices in greater
or less degree to regulate the fineness of the spray produced, or even to allow water
above to issue (or air alone) according to requirements, by merely altering the
position of the adjustable cap.
The downward or other bend of the internal tube may be open to the same pipe
as the downward or other bend of the external tube, but in this case one of these
bends must be formed or fitted with an extension reaching below the level of the
water in the said pipe. In any case the level of water in the water supply pipe is
normally at such a height that the air under pressure, either in the same or a
second supply pipe, at the same time that it can freely pass into the air tube of the
nozzle, will also force the water to rise in the water tube of the nozzle, and as before
described will automatically deliver the requisite supply of water to be ejected with
the air at the outlet of the nozzle, and in the desired state of spray or otherwise.
In some cases the several internal tubes of a group of nozzles may lead to the
same downward bend and regulating valve, and in such case the external tubes may

page_text: lead to a single connection or branch from the supply pipe or through a space
connected to the internal tube.
Dated this 7th day of January 1897
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicants.
Improvements in Spraying Apparatus.
We ALFRED GEORGE BROWNING, of 5 Oakland Villa, Flixton, near Manchester,
in the County of Lancaster, Engineer, and WILLIAM WILD CHURCHILL, of
15 Princess Street, Manchester, aforesaid, Shipper, 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 apparatus for supplying a very fine spray of air and water
or other fluid to humidify or disinfect the air of a room or for other spraying purposes,
and especially to apparatus wherein fluid and air under pressure are ejected together
from a nozzle or jet in the form of two concentric tubes leading to the orifice or
orifices of the jet.
Our invention will be readily understood from the following description on
reference to the accompanying drawings.
Fig. 1 is a sectional elevation through the nozzle.
Fig. 2 shows, drawn to a smaller scale, the same in elevation applied to separate
pipes supplying air under pressure and water.
Fig. 3 shows the same in elevation applied to a chamber connected to a single
pipe supplying both air under pressure and water.
Fig. 4 is a plan view of a compound nozzle forming five jets.
Fig. 5 is a diagram illustrating an installation having one jet only, but of course
more than one jet can be fixed to the supply-pipes.
The invention so far as regards the construction of the jet or nozzle consists, in
the first place, in forming the orifice ¹ or orifices or outlet or outlets of the jet in
a cap a, which can slide upon the open end of the external tube b by screwing it
into a stuffing-box or upon a gland a², capable of adjustment by screwing or
otherwise upon the said external tube b, and thus the orifice a' of the jet a can be
adjusted with the greatest accuracy nearer to or farther from the mouth or outlet of
the internal tube c without interfering with the packing a³.
The internal tube c is screwed or otherwise secured to the rear end of the external
tube b (see Fig. 1) and beut or cranked (say downward) at cx to a coupling c¹ with
the supply-pipe d, and is provided with a suitable regulating valve c² in this outer
or rear part c*. The external tube b is also provided with a branch 6x leading
(say downward) to its coupling 61 with the supply-pipe e, and this branch b* is
provided also with a regulating-valve b².
The two supply-pipes are connected together by a suitable pipe g, or pipes or
tubes, curved or carried above the level of the outlet al (see Fig. 2) to prevent
water from entering the air supply pipe, and so by regulating the issue of the air
to the nozzle and its egress from the nozzle, more or less pressure can be put by the
air through the pipe g, or pipes, upon the water to force the latter through the
nozzle, and the air will act upon it as it issues from the orifice or orifices in greater
or less degree to regulate the fineness of the spray produced, or even to allow water
alone to issue (or air alone) according to requirements by merely altering the
position of the adjustable cap.
The downward or other bend cx of the internal tube c may be open to the same

page_text: pipe as the downward or other bend 6* of the external
which shows the parts c* and 6* connected to a pipe
with both air under pressure and water; but in this case oi
must be formed or fitted with an extension c**, reaching
water in the said pipe or chamber f. In any case the level
supply pipe is normally maintained at such a height that
either in the same pipe or a second supply-pipe, will at the
into the air tube (say) 6 of the nozzle, and will also force th
water tube (say) c in which there is least pressure, and, as b
automatically deliver the requisite supply of water to be ejected
outlet of the nozzle and in the desired state of spray or otherwise.
maintained (see Fig. 5) by dipping the open end of the water-supply
air-tight cistern or tank h, containing water or other fluid, of w
maintained by a ball-cock h¹ or by other suitable means.
The air
connected to the upper part of the cistern h and to a suitable air-pi
suitable device for supplying air under the required pressure. The pi
there may be any desirable number serve to equalize the pressur
throughout the installation.
In some cases the several internal tubes of a group of nozzles a m
same downward bend c* and regulating valve c², (see plan view Fig. 4
case the, external tubes may lead at 6x to a single connection or
separate air-supply pipe, or to a space or chamber i, as shown, co
internal tube. If preferred, the air-suppy inlet-tap of the nozzle may
with, especially in the compound nozzle last described.
arrangement as the level of the fluid to be sprayed and the pressure
constant any desired fineness of spray can be produced and maintaine
the delivery of the nozzle has been adjusted and no dripping or dre
from the nozzle will take place.
By t
Having now particularly described and ascertained the nature of c
tion and in what manner the same is to be performed we declare
claim is
1. The combination of a spraying-nozzle or series of nozzles w
supplying air under pressure from a suitable source and means for m
fluid to be sprayed at a certain level in the supply-pipes, so that
delivery of the nozzle has been adjusted the spray will be perfecti
without dripping of the fluid as the level of the fluid and the pressure
kept constant.
2. The nozzle consisting of the combination of internal and e
regulating tap or taps in connection therewith, and the adjustable nozz
sliding on the external tube so that the spray can be kept at a d
fineness, although the amount of fluid ejected from the nozzle may
Dated this 6th day of October 1897.
be
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the A