improvements in tras Burners.
Year: 1899

page_text: Date of Application, 5th Jan., 1899-Accepted, 11th Feb., 1899
improvements in tras Burners.
I, EDWARD JAMES DOLAN, of 3615, Warren Street, Philadelphia, in the County
of Philadelphia and State of Pennsylvania, United States of America, Superin-
tendent, 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:-
My invention relates to gas burners, and consists of certain improvements which
are fully set forth in the following specification and are shown in the accompany-
ing drawings.
My invention is especially adapted for burning acetylene gas and other gases
rich in carbon, with which great difficulty has been experienced owing to the ten-
dency of the supply orifice to become clogged by the deposition of carbon. In
view of the great richness of acetylene gas it is necessary to employ exceedingly
small supply orifices and for this reason there is greater tendency for these small
orifices to become clogged.
The tendency to deposit carbon is greater when the gas is heated than when
it is at a lower temperature, and it is one of the objects of my invention to prevent
the small supply orifice or tip becoming highly heated by the combustion of the
gas, and thus to decrease the tendency of carbon deposition.
make
In carrying out this part of my invention I employ a two part burner, or one
having an outer tip at which the gas is burned and an inner supply tip having a
small orifice through which the gas escapes and is supplied to the outer tip. Such
two part burners have been used heretofore, but as previously constructed the
supply and combustion tips have been integrally connected with one another, with
the result that the heat produced in the outer tip by the combustion of the gas
was to a great extent transmitted to the inner supply tip, raising its temperature
and heating the gas passing through it. In carrying out my invention
the inner supply tip independent of the outer combustion tip, so that the heat of
the outer tip is not transmitted directly to it. By this means the inner supply
tip is kept comparatively cool, and in consequence of this gas passing through it
does not become heated and there is much less tendency to the deposition of carbon.
In addition to the clogging of the amall supply orifice by the deposition of car-
bon another objection exists in a unitary two part burner from the heating of the
supply tip. This is the liability of the supply orifice to be thrown out of line with
the combustion orifice so that the jet is not directed in a straight line through the
two orifices. In a duplex burner in which two jets are directed upon one another
so as to form a flat flame at a distance above the combustion orifice, this throwing
the jet out of line results in displacing the flame. By keeping the supply tip cool
this tendency to throw the orifice out of line is avoided.
Difficulty has also been experienced in duplex burners in forming the gas
passages in the bent or angular arms. Heretofore these passages have usually been
formed by boring down through the metal from the outside at the angle of the

page_text: arm and then boring inward from the end of the arm into the passageway first
formed. This has been necessary owing to the presence of the thimble or sleeves
at the base of the burner arms which prevents a direct boring upward from the
lower end. This manner of forming the gas passageways is objectionable because
it necessitates the making of a lateral opening in the arm which must subsequently
be plugged. It is one of the objects of my invention to form the passageways in
the angular arms without forming any lateral openings. To this end I omit the
thimble or sleeve at the end of the burner and bore the passageways directly from
the bottom upward and from the top downward, without piercing the side walls
of the arms, and attach a separate thimble or sleeve after the passageways have
been bored.
My invention is illustrated in the accompanying drawings, in which:
―
Fig. 1 is a side elevation, one half in section, of an acetylene gas burner embody-
ing my invention;
Fig. 2 is a similar view of a modified construction; and
Fig. 3 is a view similar to Fig. 1 showing my improvement in a manner of form-
ing the gas passageways in the arms.
"
I have shown. my invention embodied in a duplex" burner having two arms
provided with tips arranged at an angle to one another so that the jets projected
therefrom will meet and form a flat flame at a slight elevation above the burner
tips.
A, A, are the hollow arms of the burner branching from the cylinder B and
having ends directed toward one another. C, C, are the outer combustion tips
carried by thimbles or supports E supported by the burner body and arranged at an
angle to one another in the well known manner.
D, D, are the inner supply tips carried by the arms A, A, and located in the
rear of the tips C, C, into the rear of the passages c, of which they project. The
supply tips D, D, are provided with gas passages d communicating with the
passages in the arms A, A, and terminating in contracted orifices &.
In the construction shown in Figs. 1 and 3 the thimbles or supports F, which
carry the outer combustion burners, are connected with the arms A by pieces I'
which are shown as small strips forming an integral connection between the
thimbles and arms. They may however be separate attached pieces or brackets:
In the construction shown in Fig. 2 the thimbles or supports E are shown formed
in branching arms g, g, of a bracket G carried by the body of the burner. In
either case the combustion tips are arranged in supports carried by the main body
of the burner and are independent of the supply tips D.
The passageway in the combustion tip C may be made sufficiently large at the rear
to permit the end of the supply tip D to project into and ensure the supply of gas
to the outer tip without having any direct connection that would result in the
transmission of heat. In Fig. 3 I have shown my improvement in the formation
of the gas passageways. The thimble or sleeve B is not formed integral with the
arms A but the latter terminate in a base H, through which the lower portion of
the gas passageways are bored upward to the elbow or angle I. The upper portions i
are bored down from the upper ends of the arms to form communication with the
portions h. When the arms have been bored the thimble B is secured in any suit-
able manner over the base H so as to enclose the openings therein. The base H
may be provided with an annular reinforcement or rib s for the attachment of the
thimble. If desired the small portion of metalt at the base may be cut off before
or after boring.
The details of construction which have been shown may be varied without depart-
ing from my invention.
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:-
1. In a gas burner, the combination of branching arms directed in an angular

page_text: position towards one another, supply tips for supplying the gas communicating
with gas passages in said arms, and combustion tips independent of said supply tips
and located in front thereof.
2. In a gas burner, the combination of branching arms directed in an angular
position towards one another, supply tips for supplying the gas communicating
with gas passages in said arms, and combustion tips independent of said supply tips
and located in front thereof with the front end of the supply tips projecting into
the rear of the combustion tips.
3. In a gas burner, the combination of branching arms directed in an angular
position toward one another and provided with passageways for the gas, supply
tips having contracted orifices communicating with the gas passages in said arms,
combustion tips located in front of the supply tips and independent thereof, and
means for independently supporting said combustion tips from the body of the
burner.
4. In a gas burner, the combination of the hollow branching arms A, A, the
supply tips D carried thereby and communicating with the gas passageways thereof,
the combustion tips C independent of the supply tips and located in front thereof,
and the supports E for independently supporting the supply tips C.
5. In a gas burner, the combination with the gas pipe, of a supply tip having
a contracted orifice communicating with said gas pipe, and a combustion tip
independent of the supply tip arranged in front thereof.
6. In a gas burner, the combination with the gas pipe, of a supply tip having a
contracted orifice communicating with said gas pipe, and a combustion tip indepen-
dent of the supply tip arranged in front thereof, and means for independently
supporting said combustion tip.
7. A gas burner consisting of a plurality of angular arms, bored upward from
the base and downward from the upper ends to the elbow, in combination with
an independent thimble or sleeve attached to said base over the openings of the
bores therein.
8. A gas burner consisting of a plurality of angular arms, bored upward from
the base and downward from the upper ends to the elbow and provided with an
annular reinforcement at its base, in combination with an independent thimble or
sleeve attached to the reinforcement of said base over the openings of the bores
therein.
9. A gas burner having an angular arm bored-upward from the base and down-
ward from the upper end of the elbow, in combination with an independent thimble
or sleeve attached to said base and enclosing the opening of the bore therein.
Dated this 5th January 1899.
BOULT & WADE,
Agents for the Applicant.