Improvements in Nozzles for Air-moistening Apparatus.
Year: 1889

page_text: Date of Application. 28th Oct., 1889-Accepted, 30th Nov., 1839
COMPLETE SPECIFICATION.
Improvements in Nozzles for Air-moistening Apparatus.
A communication from abroad by EMIL HEINRICH CONRAD OEHLMANN, of Berlin, in
the Empire of Germany, Engineer.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for Foreign
Patent Solicitors, 6, Lord Street, Liverpool, and 6, Bank Street, Manchester, both in
the County of Lancaster, and 323, High Holborn, in the County of Middlesex, Civil
Engineer, 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 has, for its principal object, improvements in nozzles such as described
in Letters Patent No. 1785287 and therein termed the central nozzle.
The herein described improvements comprise the substitution for the lid laid on
the upper part of the central nozzle by a lid or cover adapted to be fitted on the body
of the central nozzle or to be inserted therein, this construction enabling the diameter
of the channels or nozzle openings to be varied as desired by turning the lid against
the body of the central nozzle and so allowing the water to emerge in thicker or
finer streams.
On the annexed drawing
Fig. 1. is a vertical section of the central nozzle with its cover or rose in position.
Fig. 2 is a horizontal section through the nozzle openings showing the openings in
the body of the nozzle coinciding with those in the lid.
Fig. 3. is a detached vertical section on an enlarged scale showing a lid fitted on the
outside of the body.
Fig. 4 a similar view showing a lid that is inserted therein.
On the base A of the central nozzle is screwed the body B whose top is closed by
the cover or rose C. The body B is slightly tapered on the outer or inner side
according to whether the cover is to be fitted thereon or therein. The cover () is
also correspondingly tapered, so that there is a tight junction between the body B and
the cover C. In order to prevent the cover C being jammed too firmly by the
screwing up of the screw f, which holds it in position, a shoulder e is arranged on the
body B upon which the cover C rests with its bottom edge.
As stated above, the regulation of the density of the spray takes place by the
turning of the cover C against the body B. A micrometrical screw i is fitted in the
lug arranged sideways on the body B, and presses against the lug / placed on
the lid C, and serves to regulate more exactly the density of the spray. In order
that the jets may emerge freely the outer openings are so widened or chamfered that
no water can remain therein.
This is a very important point in the construction of the new central nozzle, as
thereby any deleterious breaking up of or resistance to the jets is avoided; the latter
can therefore be directed with full force against the lattice work for spraying it as
described in the former specification, whilst in the so called plate spraying arrange-
ment in which the jets pass through two plates provided with corresponding holes
resting evenly upon each other, a stoppage of the water in the holes of the upper plate,
and thereby a breaking or checking of the free emerging of the jets, cannot be
avoided.
It may be remarked that the water which forces its way through anywhere owing to
the fit between the plates not being quite tight is, in this new central nozzle arrange-
ment, quite harmless as regards stopping up, because it simply drops downwards and
cannot bring about any interruption of the fine water spray as may be the case when
spraying through plates. The shape and diameter of the holes in the lid and body of
the nozzle can be varied at will, care must however be taken that the stream can
emerge freely and uninterruptedly from the nozzle.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to me
by my foreign correspondent, I declare that what I claim is :-
In a central nozzle such as described for air moistening apparatus, an adjustable
cover either capable of being fitted over or into the body B of the nozzle, the said
body and cover being provided with corresponding holes or channels of any required
diameter, whereby by turning the cover against the body of the nozzle the strength
and form of the water spray may be varied, substantially as described and shown.
Dated this 26th day of October 1889.
WM. P. THOMPSON & Co.,
Agents for the Applicant.