Improvements in Delivery Nozzles for Spraying, Spreading, and Disintegrating Liquids.
Year: 1892

page_text: Date of Application, 10th Nov., 1892
Complete Specification Left, 28th July, 1893-Accepted, 2nd Sept., 1893
PROVISIONAL SPECIFICATION.
Improvements in Delivery Nozzles for Spraying, Spreading, and
Disintegrating Liquids.
1 OTTO HOFFMANN of 17 Duke Street, Greenheys, Manchester, in the County
of Lancaster, Engineer, do hereby declare the nature of this invention to be as
follows
My said invention relates to an improved form of nozzle for spraying, spreading
and disintegrating liquids the said nozzle being applicable to a variety of purposes.
According to my invention the delivery end of the nozzle is formed with two
conical recesses the meeting apices of which form the exit orifice. The inner
recess forms a conical chamber into which the liquid is delivered from the straight
portion of the nozzle through a ring of inclined ports. The effect of this arrange-
ment of double coned recess and inclined delivery ports is that the ejected liquid is
discharged in the form of a cone of spray or finely divided liquid particles. The
mode of constructing my improved nozzle may be varied.
A convenient method is to make the nozzle tip as a separate portion, and form
therein the two conical recesses of which I have spoken. The delivery orifice is
formed at the point where the two truncated apices of the cones meet. A disc is
next provided and is formed with grooves or ports in its circumference, the said
ports lying at an angle relatively to the axis of the nozzle. This disc is placed
between the end of the nozzle and the tip so that when the tip is screwed on the
disc is jambed and held. The issuing liquid is forced through the inclined ports
and impinging upon the inclined side of the inner conical recess is driven through
the central efflux orifice and discharged in the form of a cone of sprayed or finely
divided liquid.
Various degrees of obtuseness or acuteness may be given to the spray cone by
altering the angle of the inclined ports. Means might also be adopted to increase
or diminish the capacity of the said inclined ports.
I do not confine myself to the method of construction indicated so long as the
inclined ports and double cone arrangement is preserved.
An advantage of the separable cap on the nozzle is that in cases where the cap
is liable to destruction, as for example when the nozzle is used to feed oil into
boiler or other furnaces, it can be easily and quickly renewed without renewing the
rest of the nozzle.
Dated this 9th day of November 1892.
E. K. DUTTON & Co.,
5, John Dalton Street, Manchester, Agents.
COMPLETE SPECIFICATION.
Improvements in Delivery Nozzles for Spraying, Spreading, and
Disintegrating Liquids.
I OTTO HOFFMANN of 17 Duke Street, Greenheys, Manchester, in the County
of Lancaster, 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 and accompanying drawings:-
My said invention relates to an improved form of nozzle for spraying, spreading
and disintegrating liquids, the said nozzle being applicable to a variety of purposes.
According to my invention the delivery end of the nozzle is formed with two
conical recesses, the meeting apices of which form the exit orifice. The in.er

page_text: recess forms a conical chamber into which the liquid is delivered from the straight
portion of the nozzle through a ring of inclined ports. The effect of this arrange-
ment of double coned recess and inclined delivery ports is that the ejected liquid is
discharged in the form of a cone of spray or finely divided liquid particles.
The mode of constructing my improved nozzle may be varied.
My invention will be best understood by a reference to the annexed sheet of
illustrative drawings in which,
Fig. 1 is a longitudinal section of my improved nozzle.
Fig. 2 is a cross section at the line A A.
Fig. 3 is a separate view of the diffusing disc of the nozzle with inclined ports.
Fig. 4 shows a modified form of the said disc.
I make the nozzle tip a as a separate portion, and form therein the two conical
recesses b and c of which I have spoken. The delivery orifice d is formed at the
point where the two truncated apices of the cones b, c meet. A disc e is next
provided and is formed with grooves or ports in its circumference, the said ports f
lying at an angle relatively to the axis of the nozzle. This disc which is also shown
in plan at Fig. 2 and separately at Fig. 3 is placed at the base of the inner cone b
and between the end of the pipe 9 and the said cone, so that when the nozzle is
screwed on the pipe g, the disc e is jambed and held.
The issuing liquid is forced through the inclined ports in the disc as indicated by
the arrows, and impinging upon the inclined side of the inner conical recesses b is
driven through the central efflux orifice d and discharged in the form of a cone of
sprayed or finely divided liquid.
Various degrees of obtuseness or acuteness may be given to the spray cone by
altering the angle of the inclined ports. Means might also be adopted to increase
or diminish the capacity of the said inclined ports.
I do not confine myself to the method of construction indicated, so long as the
inclined ports and double cone arrangement is preserved.
In the modified form of the disc e shown at Fig. 4, the circumference of the disc
is cut with a coarse screw thread. This is really nothing more than a spiral port,
and through this the liquid pressure may be forced into the conical chamber b.
An advantage of the separable cap or nozzle a is that in cases where the cap is
liable to destruction, as for example when the nozzle is used to feed oil into boiler
or other furnaces, it can be easily and quickly renewed.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is.
.
The improved delivery nozzle for spraying, spreading and comminuting liquids,
consisting of a cap capable of being screwed upon the delivery pipe and formed
with two conical recesses, the meeting apices of which form the exit orifice, in
combination with a disc having inclined ports or other means for directing the
liquid tangentially into the inuer conical chamber of the nozzle, for the purposes
and substantially as described and shown.
Dated this 27th day of July 1893
E. K. DUTTON & Co.,
5, John Dalton Street, Manchester, Agents.