Oil-Burner. Page: 2 of 3
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UNITED STATES PATENT OFFICE
HOLMES DUKE, OF BEAUMONT, TEXAS.
OIL-BURNER.
945,922. Specification of Letters Patent. Patented Jan. 11, 1910.
Application filed April 9, 1909. Serial No. 488,913.To all whom it may concern:
Be it known that I, HOLMIEs DUKE, a
citizen of the United States, residing at
Beaumont, in the county of Jefferson and
5 State of Texas, have invented a new and
useful Oil-Burner, of which the following
is a specification.
This invention relates to that class of
liquid fuel burners known as injector burn-
F0 ers, and more particularly a burner of this
type designed to inject or spray oil and
steam into the combustion chamber of the
furnace.
The present invention has for its object to
1 5 provide an improved nozzle structure, to-
gether with improved means for regulating
the flow therefrom, and to this end it con-
sists in a novel construction and arrange-
ment of parts to be hereinafter described
20 and claimed, reference being had to the
drawing hereto annexed in which-
Figure 1 is a central longitudinal sec-
tional view of the burner. Fig. 2 is a trans-
verse section on the line 2-2 of Fig. 1. Fig.
25 3 is a transverse section on the line 3-3 of
Fig. 1.
Referring to the drawing, 5 denotes a
casing containing a partition 6 whereby it
is divided into two chambers, one of said
30 chambers being for the oil or other liquid
fuel, and the other chamber for the inject-
ing fluid which in the present instance is
steam. To one end of the casing is con-
nected an oil supply pipe 7, and to the other
25 end a steam supply pipe S.
The partition 6 is formed with a thread-
ed opening into which is screwed a bonnet 9
which projects through an opening in the
casing to the outside thereof, and has its
40 outer end screw-threaded to receive a coup-
ling-nut 10. This coupling nut secures with-
in the bonnet a tube 11, said tube having a
shoulder 12 which abuts against the outer
edge of the bonnet, and is engaged by the
45 coupling nut 12.
On the side of the casing 5 opposite that
from which the bonnet 9 projects, said cas-
ing is formed with a neck 13 which is screw-
threaded to receive a coupling nut 14, said
50 nut being employed for securing a nozzle
tube 15 to the casing. This tube extends
into the neck 13 and is formed with a shoul-
der 16 engaging the outer end thereof, and
by means of the coupling nut 14 engageable
55 with the shoulder, the tube is coupled to the
casing. The outer end of the tube 15 has adischarge orifice 17, and its inner end com-
municates with the steam chamber of the
casing 5.
The tube 11 extends lengthwise and con- 60
centrically through the tube 15, and adja-
cent to the discharge orifice 17 is fitted with
a tip 18 through which the oil is discharged.
That end of the tube 11 to which the tip is
applied has a screw-threaded counterbore 65
into which the tip screws, whereby it is
made adjustable toward and from the dis-
charge orifice 17. That end of the tube 11
opposite the discharge end thereof has its
bore screw-threaded as indicated at 19 into 70
which screws the threaded portion of the
stem 20 of a needle valve 21 having for its
seat the discharge orifice 22 of the tip 18.
By means of this valve the amount of fuel
can be regulated and it may also be shut off. 75
Inasmuch as the tip 18 is adjustable toward
and from the discharge orifice 17, the inject-
ing fluid can be controlled by manipulating
the tip. The outer end of the. tip is made
cone-shaped and is adapted to extend par- 80
tially into the orifice 17, by reason of which
it will be apparent that when the tip is
moved outwardly the area of said orifice is
decreased, and when the tip is moved in-
wardly, said area is increased, thus letting 85
a smaller or greater. quantity of steam es-
cape from the orifice.
That portion of the bonnet 9 which is lo-
cated within the casing 5, is formed with
ports 23 which communicate with a groove 90
24 extending circumferentially around the
bore of the bonnet. In the plane of this
groove, the tube 11 has ports 25, and in the
plane of the last mentioned ports, the outer
surface of the tube has a circumferential 95
groove 26 in order that a more free flow of
oil may be had. Two ports 23 are provided
in order that the flow of oil may not be ob-
structed in case of one of the ports becom-
ing clogged up. The flow of oil is through 100
the ports 23 into the groove 24, and from
said groove through the ports 25 into the
bore of the tube 11, and through said bore
to the tip 1S and out of the orifice 22 there-
of through the orifice 17 where it meets a jet 105
of steam, and is atomized and sprayed into
the furnace. The tubes 11 and 15 are spaced
from each other sufficiently to permit the
steam to pass therebetween to the orifice 17.
That portion of the bore of the tube 15 in 110
which the tip 18 extends is contracted. The
tip is flattened on opposite sides to permit
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Duke, Holmes. Oil-Burner., patent, January 11, 1910; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth508676/m1/2/: accessed June 22, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.