Improvements in Hydro-carbon Incandescent Lamps.
Year: 1897

page_text: Date of Application, 9th Feb., 1897-Accepted, 21st Aug., 1897
COMPLETE SPECIFICATION.
Improvements in Hydro-carbon Incandescent Lamps.
I, REGINALD HADDAN, of the Firm of Herbert Haddan & Co., of 18, Buckingham
Street, Strand, London, Patent Agent, do hereby declare the nature of this invention
a communication to me from abroad by John Wesley Allison, 35 Wall Street,
New York City, New York in the United States of America, Gentleman, 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 an improvement in lamps, and it consists in an incandescent
burner, a vaporizing tube adjacent to the burner, a mixing chamber for mixing air
and vapor, and means for conveying the mixed air and vapor to the burner.
My invention further consists in an incandescent lamp for burning petroleum vapor
provided with a removable vaporizing tube.
My invention further consists in an incandescent lamp for burning petroleum vapor,
the combination with a mixing chamber, of a removable vaporizing tube discharging
the vapor into the mixing chamber.
My invention further consists in an incandescent lamp for burning petroleum vapor,
the combination with a mixing chamber, of a removable vaporizing tube discharging
the vapor into the mixing chamber and a valve carried by the vaporizing tube for
cutting off and regulating the supply of vapor to the mixing chamber.
My invention further consists in the parts and combinations of parts as will be more
fully described and pointed out in the claims.
In the accompanying drawings, Figure 1 is a view of a lamp embodying my
invention. Figure 2 is a view in section through the tubes which convey the
combined air and vapor to the burners. Figure 3 is a sectional view through the
induction tubes. Figure 4 is a view in section on line x x Figure 1 looking
upward, and Figure 5 is a view in section of the vaporizing tube, stuffing box
and sleeve.
A represents the base or burner of any suitable shape provided with one or more,
preferably a plurality, of burners B which latter can be of any desired construction.
This base A is in open communication with one or more tubes C which latter extend
upwardly and open into the mixing chamber D.
This mixing chamber D constitutes the crown of the lamp and is located in a
central position over the burner or burners, and is designed for intimately mixing or
commingling the vapor generated in the vaporizing tube to the hereinafter referred
to, with air, drawn into the mixing chamber by the suction of the vapor.
In the drawings I have shown two tubes C connecting the mixing chamber and
base A, these tubes being connected to the mixing chamber near the lower end
of the latter.
Surrounding the lower end of mixing chamber D is the bell shaped hood E which
latter is greater in diameter than the mixing chamber, and is arranged around same
with its large end downward so as to direct the ascending current of hot air around
and in close contact with the mixing chamber.
This hood is, supported by the air induction pipe F which passes through the

page_text: hood E, and is provided with an upwardly extending branch F¹ passing through and
secured to the bottom of the mixing chamber D, and terminating within the chamber
near the upper end of the latter.
G is the vaporizing tube, cylindrical throughout its entire length, and extending
from the base A, up through an opening in pipe F immediately below the vertical
branch F¹, so as to discharge the vapor into said latter pipe or branch.
This tube is provided at its upper end with a screw cap a having a conical
aperture a therein, through which passes the end of the needle valve b. This
needle valve passes throughout the length of the tube G, through the stuffing box G¹
which latter is removably secured to and forms a continuation of the vaporizing
tube G, and is secured to the sleeve G2 movably mounted on the stuffing box. Hence
it will be seen that by moving the sleeve longitudinally, the needle valve is moved in
the same direction and as the conical end of the needle is designed to wholly or partly
close the escape orifice in the end of the tube, the longitudinal movement of the
needle operates to open or close more or less of the escape aperture and thus regulate
the amount of vapor discharged into the mixing chamber. A small tube z encircling
the needle valve is located within the vaporizing tube and serves to prevent the
needle valve from becoming bent or displaced, as it affords the needle valve a lateral
bearing in all directions throughout the length of the vaporizing tube. This
movement of the sleeve can be effected in various ways, but in the present instance,
I have shown the stuffing box provided with a lug c which latter rests in a spiral
groove c¹ in the sleeve, the groove being open at its inner end to permit it to be
removed from the box, hence by rotating the sleeve by means of the lever c², the
sleeve is, by reason of its engagement with the lug, given a longitudinal movement
and carries with it the needle valve. In the device as illustrated, the lever c² is
screwed into the sleeve and engages the needle valve for locking the latter to
the sleeve.
The upper end of the vaporizing tube fits snugly within the induction tube F while
the lower end passes through the base A, the main portion of the tube being between
burners and exposed to the heat thereof. This tube is as before stated cylindrical
throughout its length, and is removably held in place by the lug d thereon engaging
the open inverted L-shaped slot d¹ in the sleeve d² depending from the base.
With this construction it will be seen that the vaporizing tube can be instantly
placed in position or removed from the lamp without the employment of tools or
skilled labor and hence can be readily removed for cleaning. By simply removing the
cap and stuffing box on the opposite ends of the tube any carbon that may be
deposited on its inner face can be readily and quickly removed. While I may attach
an oil reservoir to the lamp, I prefer to employ an independent reservoir remote from
the lamp and convey the oil to the lamp by means of a tube or pipe, flexible or rigid,
but in either event the oil will be admitted to the vaporizing tube near the bottom
thereof. In the present instance, I have shown the stuffing box provided with a
screw threaded opening for the attachment of a pipe which conducts oil to the tube
from a reservoir located at a distance from the lamp. The oil may be fed by gravity,
or it may be forced from the reservoir by air pressure.
Resting on the base A of the lamp between the burners is the oil or alcohol cup I.
This cup is provided with a central sleeve for the passage of the vaporizing tube, and
is designed to contain sufficient alcohol or oil which when ignited, produces sufficient
heat to vaporize the oil within the tube. The vapor thus generated rises in the tube
and is discharged into the branch induction pipe F¹ and acting as an injector draws
in air through the pipes F. This air thus drawn in, mixes with the vapor in pipe F¹
and is discharged therefrom against the top of the mixing chamber.
By this arrangement the vapor and air are intimately mixed and passing
downwardly are discharged into the base A and pass from thence to the burners where
it is ignited from the flame of the burning oil in the oil cup or can be ignited in the
ordinary manner. After the combined air and vapor issuing from the burners has
been ignited, the heat therefrom vaporizes the oil in the vaporizer and a strong steady
and safe light can be maintained as long as the oil supply is continued.

page_text: The intensity of the light can be regulated by increasing and lessening the supply
of vapor to the pipe F¹ and it can be extinguished by closing the orifice through
which the vapor escapes to said pipe F, and it can also be extinguished by cutting
off the supply of oil by a cock located in the oil supply pipe.
It is evident that numerous slight changes might be made in the general
arrangement and combinations of parts without departing from the spirit and scope
of my invention and hence I would have it understood that I do not limit myself to
the precise details herein shown and described, but,
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, I declare that what I
claim is:
1. In a hydro-carbon incandescent lamp, the combination with a vaporizing tube
or receptacle, a mixing chamber for mixing air and vapor, and a pipe for conveying
the mixed air and vapor to the burner, of an incandescent burner located at one side
of and in close proximity to the vaporizing tube, substantially as set forth.
2. In a hydro-carbon incandescent lamp, the combination with a vaporizing tube or
receptacle, a mixing chamber for mixing air and vapor, and a pipe for conveying the
mixed air and vapor to the burner, of incandescent burners located on opposite sides
of the vaporizing tube, substantially as set forth.
3. In a hydro-carbon incandescent lamp, the combination with a vaporizing tube
or receptacle and a mixing chamber for inixing air and vapor, of an incandescent
burner (one or more) located below the mixing chamber and at the side or sides of
the vaporizing tube and a pipe (one or more) for conveying mixed air and vapor from
the mixing chamber to the burner or burners, substantially as set forth.
4. In a hydro-carbon incandescent lamp, the combination with a vaporizing tube
or receptacle and a mixing chamber for mixing air and vapor, of an incandescent
burner (one or more) located below the mixing chamber and at the side or sides of
the vaporizing tube, of a pipe (one or more) extending from the mixing chamber
downwardly in close proximity to the burners and below the same, and adapted and
arranged to convey mixed air and vapor from the mixing chamber to the lower ends
of the burners and to heat the mixture on its passage, substantially as set forth.
5. In a hydro-carbon incandescent lamp, the combination with a mixing chamber,
incandescent burner, and pipe for conveying mixed air and gas to the burner, of
a vaporizing tube located substantially parallel to the burner and constructed and
adapted to be readily and separably removable from the lamp, substantially as
set forth.
6. In a hydro-carbon incandescent lamp, the combination with a vaporizing tube,
mixing chamber and an incandescent burner, of a hood located above the burner and
adapted to convey heated air into contact with the mixing chamber.
7. In a hydro-carbon incandescent lamp, the combination with a plurality of
burners, a mixing chamber located above the burners, and pipes for conveying mixed
air and vapor from the mixing chamber to the lower ends of the burners, of a
vaporizing tube provided with a needle valve for regulating the discharge of
vaporized oil into the mixing chamber, substantially as set forth.
8. In a hydro-carbon incandescent lamp, the combination with a hollow base, an
incandescent burner connected therewith, of a mixing chamber located over the
burner, a pipe connecting the mixing chamber and hollow base, and a readily
removable vaporizing tube arranged in close proximity to the burner, substantially
as set forth.
9. In a hydro-carbon incandescent lamp, the combination with a base, an
incandescent burner connected therewith, and a mixing chamber, of a vaporizing
tube detachâbly secured to the base by a bayonet joint, substantially as
set forth.
10. In a hydro-carbon incandescent lamp, the combination with a vaporizing
tube and needle valve, of a small tube surrounding the needle valve, substantially
as set forth.

page_text: 11. In a hydro-carbon incandescent lamp, the combination with a vaporizing tube
having a stuffing box and pipe coupling secured to one of its ends, and a nozzle to
its opposite end, of a needle valve extending throughout the length of the vaporizing
tube and through the stuffing box, substantially as set forth.
12. In a hydro-carbon incandescent lamp, the combination with a vaporizing tube,
provided with a stuffing box, and a needle valve extending throughout the length of
the vaporizing tube and through the stuffing box, of a sleeve secured to the projecting
end of the needle valve, said sleeve being constructed and adapted to be adjustably
secured to the stuffing box, and thereby adjust the position of the needle valve,
substantially as set forth.
Dated this 9th day of February 1897.