IMPROVEMENTS IN FIXED NOZZLE INJECTORS
Year: 1876

page_text: LETTERS PATENT to William Robert Lake, of the Firm of Haseltine, Lake,
& Co., Patent Agents, Southampton Buildings, London, for the Invention of
"IMPROVEMENTS IN FIXED NOZZLE INJECTORS." A communication from abroad
by Charles John Haswell, of Vienna, Austria, Engineer.
Sealed the 26th May 1876, and dated the 21st January 1876.
PROVISIONAL SPECIFICATION left by the said William Robert Lake at the
Office of the Commissioners of Patents on the 21st January 1876.
WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London. "IMPROVEMENTS IN FIXED NOZZLE INJECTORS."
A communication.
These improvements relate to that form of injector known as the fixed nozzle
injector.
The said improvements haye, firstly, been found to considerably diminish the
waste of the overflow, at the same time allowing the waste or overflow cock or
valve to be kept closed during the working of the injector.
Secondly. To facilitate the use of very hot feed water.
Thirdly. To diminish the first cost, and at the same time to render all the parts
easy of access.
The injector is in its general features of the usual well known construction, with
fixed nozzles, and it is preferably fitted without a steam spindle, though such a
spindle may also be applied; but instead of as is usual, leaving a certain free space
between the combining cone and the receiving cone, the combining cone is inserted
for a suitable short distance within the receiving cone. The receiving cone is
suitably enlarged for the purpose, and it is preferably formed with a trumpet or bell
shape. The combining cone is further made with two or more lateral holes at a short
distance from its mouth, as is also the case with the trumpet-shaped receiving cone.
Instead of the holes in the combining cone the latter could be cut shorter, and its
nozzle inserted into another smaller cone. I am aware that such double cones have
been used in the so-called condensing chamber, but such cones have been applied in
the overflow chamber.
Instead of using a tap, a spindle, or other valve for regulating the inlet into the
water chamber of the water to be fed into the boiler, I prefer to employ the simpler
form of valve technically known as the butterfly valve.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Robert Lake in the Great Seal Patent Office on the 27th
May 1876.
"
WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London.. " IMPROVEMENTS, IN. FIXED, NOZZLE INJECTORS."
A communication to me from abroad. by Charles John Haswell, of Vienna, Austria,.
Engineer.
These improvements relate to that form of injector known as the fixed nozzle
injector.
The said improvements have been found, firstly, to considerably diminish the
waste of the overflow, at the same time allowing the waste or overflow cock or valve
to be kept closed during the working of the injector.
Secondly. To facilitate the use of very hot feed water.
Thirdly. To diminish the first cost, and at the same time to render all the parts
easy of access.
This injector is in its general features of the usual well known construction, with
fixed nozzles, and it is preferably fitted without a steam spindle, though such a
spindle may also be applied; but instead of having, as usual; a certain free space:
between the combining cone and the receiving cone the combining cone is inserted
for a suitable distance within the receiving conc. The receiving cone is suitably
enlarged for this purpose, and it has preferably a trumpet or bell shape. The com-
bining cone is further made with two or more lateral holes at a short distance.from..
its mouth, as is also the case with the trumpet-shaped receiving cone.
Instead of providing the combining cone with holes the latter could.be cut shorter,
and its nozzle inserted into another smaller cone. I am aware that such double
cones have been used in the so-called condensing chamber, but such cones have not
been applied in the overflow chamber.
Instead of using a tap, spindle, or other valve for regulating the inlet into the
water chamber of the water to be fed into the boiler, I prefer to employ the simpler
form of valve technically known as the butterfly valve...
It is usual to fix or hold together the parts of fixed nozzle injectors by means of
flanges and bolts and screws; I however prefer to employ screw couplings or gas
pipe attachments.
Having now set forth the nature of my Invention I will proceed to describe the
same more particularly by the aid of the accompanying Drawing, in which,
Figure 1 is a longitudinal section of my improved injector; Figure 2 is a plan
of the same.
Figure 3 is a section through the water chamber and valve.
Figure 4, a section through the waste chamber and valve.
In all of these Figures similar letters denote the same parts.
I have preferably shewn my improvements as adapted to an injector without
adjustment, but it is evident that they are also applicable to injectors fitted with
the usual steam spindle. a is the body of the injector cast in one piece with the
combining cone c, and the water chamber W; b is the usual steam cone or nozzle;
d is the receiving cone; K is the passage to the boiler fitted with the boiler valve k;
S is the waste or overflow chamber fitted with its waste valve 8. The combining
cone c, which opens, as usual, into the waste chamber, is inserted for a short distance
into the receiving cone, which is suitably enlarged to take the same, being preferably
made trumpet or bell shaped. The combining cone is also made with two or moro
lateral holes indicated by in the Drawing. The receiving cone d is also. mado
with a lateral hole or holes shewn by ..

page_text: The usual water chamber W is fitted with a check valve w of the butterfly. form,
such as is often used in connection with the governor for regulating the inlet of
steam into an ordinary steam engine. The main body a of the injector is connected
with the pipes for the steam supply and for the boiler feed by means of screwed
couplings or rings C, C, as shewn in the Drawing; a similar coupling Cul is used
for the water supply pipe, and also at C to form the joint for the spindle of the
butterfly valve w. This mode of attaching or holding the parts together has I am
aware been previously used for injectors with adjustable nozzles, but not for injectors
of the kind above specified.
Having thus fully described the said Invention as communicated to me by my
foreign correspondent, and the manner of performing the same, I wish it understood
that I claim,-
First. Constructing injectors with the nozzle of the combining cone inserted into
and embraced by the receiving cone, as above described.
Second. Constructing that portion of the receiving cone which takes the nozzle of
the combining cone of a suitable trumpet or bell shape, as above described.
Third. Perforating the nozzle of the said combining cone, as above described.
Fourth. Perforating the nozzle of the said receiving cone, as above described.
Fifth. The application of the form of valve known as the butterfly valve for
regulating the inlet of the water, as above described.
Sixth. Fitting or holding together the parts of fixed nozzle injectors by means of
gas pipe attachments, as above described.
In witness whereof, I, the said William Robert Lake, have hereunto set my
hand and seal, this Twenty-seventh day of May, in the year of our Lord One
thousand eight hundred and seventy-six.
Witness,
JAS. EDWARDS,
S, Southampton Buildings,
London.
W. ROBT. LAKE. (L.S.)