Improvements in Combined Steam and Air Injectors and Exhausters.
Year: 1893

page_text: Date of Application, 5th Sept., 1893-Accepted, 7th Oct., 1893
COMPLETE SPECIFICATION.
Improvements in Combined Steam and Air Injectors and
Exhausters.
I, SALYER REED EARLE, of George Street, in the City of Belleville, in the
County of Hastings, and Province of Ontario, Canada, Mechanical Engineer, do
hereby declare the nature of my invention for "IMPROVEMENTS IN COMBINED
STEAM AND AIR INJECTORS AND EXHAUSTERS," and in what manner the same is
to be performed, to be particularly described and ascertained in and by the following
statement :-
The following are the objects of my invention: to promote and increase the
draft of steam boiler furnaces, &c. by injection of mingled steam and air into the
furnace below the combustion chamber; to lessen the noise caused by injection; to
obtain a diversified distribution of steain and uniformity of draft through the air-
inlets, and to close off direct draft through the air-inlets when slow combustion is
desired.
My invention is used in either the vertical or standing position, or, in the
horizontal or lying down position, according to which of the two positions suits
best. Some of its parts are also placed differently for the different uses, but none
are dispensed with in the same type of the invention even when used in different
arrangement or position.
The air pipe leading from over the boiler or boilers in one form, may be dispensed
with in some other forms or modifications of my invention.
In the drawings illustrating my invention similar numbers of reference refer to
similar parts throughout, and-
Fig. 1, represents a cross-section of a boiler in brick setting, taken at a point
slightly in front of the steam dome and showing my invention applied.
Fig. 2, represents a detail view of a similar modification to that in the foregoing
figure but having the elbow on the reverse end, to adapt it for use in the horizontal
position.
Fig. 4, represents a partial section and partial elevation of a modified form of my
invention in which 1 dispense with the air pipe and provide doors to close off
draught when necessary.
Fig. 5, represents still another modification of my invention having a large steam
drum within, and the simplest form of nozzle employed.
Fig. 6, represents an elevation of the receiver 1, of Fig. 3, on the line A-B but
having the valve, 18, and the drain cock, 16, removed.
Fig. 7, represents an end elevation of Fig. 4, previously mentioned, to illustrate
the doors when closed to cut off draught.
Fig. 8, represents an interior side elevation of the enlarged steam drum used in
Fig. 5.
Fig. 9, represents a section at centre of the ordinary steam drum used in all but
the modification in Fig. 5.
Fig. 10, represents a section of a nipple, about full size.
Fig. 11, represents a plan on line C-D of the following figure to disclose the
construction, and-
Fig. 12, represents a portion of the air pipe at the cut off therein and having the
gate door removed.
In the first form of injector and exhauster, the body is composed of three
portions securely bolted together by their flanges and bolts therein as shown, and
it is divided into the receiver, 1, the nozzle, 2, and the elbow, 3, which latter part
11

page_text: is secured to either the receiver, 1, or nozzle, 2, according as the invention is for
use in the vertical or horizontal positions.
The elbow, 3, is attached to the receiver, 1, in the horizontal form of blower as
shown in Fig. 3, and in the vertical form of adaptation it is secured to the enlarged
mouth of the nozzle, 2, and is made with a base, 5, on which it rests and by which
it is secured to its support to stand upright and support it and the air pipe, 6, which
latter is preferably of sheet metal and secured by means of a flanged collar, 7,
riveted thereon, to the upper end of the receiver, 2.
In the receiver, 2, and as an integral part thereof, the transverse steam pipe, 8,
is employed, having a thimble 9, connecting the centre of the said steam pipe, 8, to
a drum, 10. The drum, 10, has a series of peripheral pipes, 11, radiating there-
from, which have an elbow, 12, in each alike, and turned so as to discharge in the
same direction.
On each pipe, 11, (and on the central straight pipe, 13, projecting from the end
of the drum, 10) is fitted a nipple, 14, having the conical interior shown by
Fig. 10, and a small outlet-vent, 15, in its end.
The steam pipe, 8, at one of its opposite ends, has a cock, 16, and a supply
pipe, 17, connected thereto, the latter leading from the dome of the boiler equipped
with my invention. On the admission of steam through the valve, 18, on the
supply pipe, 17, a strong blast is formed through the nipples, 14, by causing a
partial vacuum in rear of said nipples, 14, which causes a strong suction through
the receiver, 1, and the air-pipe, 6, leading to the heated air above the boiler. In
the air-pipe 6, an elbow, 19, therein, is required to bring the enlarged or flared
mouth, 20, of the pipe, 6, to the required location over the boiler.
In the pipe, 6, and conveniently near to the lower end thereof is located the
cut-off, 21, constructed of flanged rings 22, secured together by their flanges for
half the circumference and by means of a suitable spacing piece between the flanges
where secured together, or by an allowance for the purpose, the gate, 24, is
provided for, and is composed of sheet metal and formed as shown-a circular disc
having similar projections on its periphery and almost diametrically opposite, which
form the hinge
on which it swings and a means on the opposite edge by which to
operate the disc.
In the modification of my invention shown by Figs. 4, and 7, having an enlarged
end on the nozzle, 2, into which the receiver, 1, is placed and suitably secured, I
employ doors, 25, jointed to said nozzle, and each door is a half ring in form and
covers the space between the receiver, 1, and the nozzle, 2, for half the circum-
ference. In the receiver, 1, are formed openings, 26, through which the air is
drawn when one or both doors, 25, are open. The transverse steam pipe, 8, is
dispensed with in this modification and the thimble, 9, of the modification shown by
Figs. 1, 2, 3, and 6 is lengthened somewhat to allow the doors, 25, to he opened
clear of the pipe, 17, leading from the boiler; when this form is used horizontally.
Closing the doors, 25, has the same effect as closing the cut-off, 21, in the air-pipe
of the modification shown by Figs. 1, 2, 3, and 6.
In the modification shown by Figs. 5, and 8, the steam drum, 10, is considerably
enlarged, is secured by a flange at its periphery extending outward to fully close
the end of the nozzle, 2, at its outer end which forms the receiver 1, and may be
formed together as integral parts of one another or may be secured together at the
flange, 27, which forms a stop against the brick setting of a boiler. In this last
modification the thimble, 9, and elbows, 12, are dispensed with and the pipes, 11,
carrying the nipples, 14, thereon, project from the side of the drum, 10, as shown.
The transverse steam pipe, 8, in the first form shown by Figs. 1, 2, 3, and 6, is also
dispensed with and the pipe 17, enters at the periphery as shown, or may enter the
outer side, at the position shown in Fig. 7, of the preceding modification.
By means of pipes arranged for the particular use, my invention is of great
utility for blast or smelting furnaces, cupolas, and for lifting the shavings and
wood-dust from wood-working machinery. In the latter use the pipe, 6, would
have its mouth, 20, located near the source of dust instead of over the boiler, and

page_text: the deposit of same would be conveniently near the furnace in the engine room.
The ventilation of ships, shafts, tunnels and mines are other uses to which it can be
applied.
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-
Claim 1. In a combined air and steam injector and exhauster, the steam chamber
having a series of pipes disposed around and radiating from its periphery and
having a central jet projecting from the end of the drum, said peripheral jets
curved to discharge parallel to one another and in the same direction, substantially
as shown and for the purpose specified.
Claim 2. In combination, the conical nozzle having a flared or enlarged outlet
and a flange on each end, and the conical receiver having a transverse steam pipe
supporting a steam chamber having a series of jets thereon and within said nozzle
and by a flange on its larger end secured to the flange on the larger end of said
nozzle, substantially as shown and described.
Claim 3. In combination, the nozzle having a flange on each end and a conical
body flared at the smaller end, the conical receiver having a transverse steam pipe
therein and supporting a steam chamber having a series of jet pipes to discharge
into said nozzle-said receiver having a flange on each end and by the larger
end connected to the larger end of said nozzle, and the elbow having a flange
thereon by which to connect to either the said receiver or said nozzle as and for
the purpose specified.
Claim 4. In combination, the nozzle having a flange on each end and its conical
body flared at the smaller end, the conical receiver having a transverse steam pipe
and steam chamber supported on said pipe as specified and flanges on its ends, the
elbow having flanges thereon to connect it as provided, and the air pipe connected
to the smaller end of said receiver to form a vertical injector and to the elbow to
form a horizontal injector, substantially as set forth.
Claim 5. In combination with an injector and exhauster having a steam chamber
and jet pipes and nipples therein, the air pipe connected thereto in rear of said
chamber and jet pipes, and having a cut-off as specified, therein, substantially as
and for the purpose set forth.
7
די
1
1000
ALLISON BROS.,
Agents for the Applicant.