Improvements in or relating to Lamps.
Year: 1898

page_text: Date of Application, 2nd June, 1898-Accepted, 2nd July, 1898
Improvements in or relating to Lamps.
A communication from JACKSON FITS RANDOLPH, of 100, Washington Street,
Chicago, Illinois, United States of America.
I, ALFRED JULIUS BOULT, of 111, Hatton Garden, County of Middlesex, Char-
tered Patent Agent, 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: —
This invention relates to certain new and useful improvements in lamps, of
which the following is a specification, reference being had to the accompanying
drawings, in which,
Figure 1 is an elevation of the lamp, the shade being shown in section; Fig. 2
is a central vertical section of the burner; Fig. 3 is a sectional view on the line
3-3 of Fig. 2 Fig. 4 is an elevation, partly in section, of an adjunct of the
Bunsen tube used in the lamp; and Fig. 5 is a plan view of the part shown in
elevation in Fig. 4.
The bowl or fount A is without novel features. It is provided with concen-
trically arranged wick tubes, B C, forming an annular space for the accommo-
dation of a tubular wick. Any suitable wick elevating device may be used.
The ordinary rotating spindle a is shown in the drawings. The outer tube B
is prolonged above the upper end of the tube C a short distance, and within the
end of the tube C is fitted a plug G from which rise a plurality of radiating
blades having near their lower ends outstanding shoulders f. A Bunsen
tube D fits over the blades F and is supported upon the shoulders f, so that a
narrow annular port is formed between its lower end and the top of the plug G.
The tube D is provided with air ports d which are as numerous, or of such area
as may be necessary to properly support combustion, and these ports are located
below the upper ends of the blades F which are bent or deflected internally,
as shown at fi, for the purpose of giving the ascending currents a rotary motion,
to the end that the vapors may be thoroughly mixed before they issue from the
upper end of the tube 1) where they burn with a blue flame typical of the Bunsen
burner.
The upper end of the wick tubes and the Bunsen tube are inclosed by a cas-
ing M which is without perforations, except as to the lighting aperture m, which
may be closed by a band O encircling the casing. A gallery E forms the top of
the casing M and fits tightly about the upper end of the tube D and is also with-
out perforations.
A non-combustible gauze mantle H is mounted above and incloses the end of
the tube I so that flame issuing from the upper end of the latter will cause the
incandescence of the mantle. An inclosing chimney of glass J rests upon the
gallery E and is surmounted by a metal chimney K of sufficient length to insure
ample draft to promote combustion. These chimneys are held in place by elastic
arms k, in bow form, permanently attached at their lower ends to the casing M,

page_text: and at their upper ends to the metal chimney K. The chimney J is adjusted
to the lamp by drawing upwardly upon the chimney K, so as to raise it against
the resistance the spring-arms k, which, when the parts are adjusted, draw
the upper chimney down firmly upon the lower one.
The burner may be secured to the fount in any desired manner. A flange P
is shown as a means of attachment projecting radially from the tube B and
engaging the lower end of the casing M by the well-known bayonet point form
of attachment. The flange P is perforated, as shown at p, so that all of the air
used by the lamp finds entrance to the burner through the bottom of the casing M.
The wick X is raised to the top of the tube C and as the tube B extends above
it, as a wall, but little air is supplied to maintain combustion at this point so that
most of the vapor distilled escapes from the flame, unburned, and enters the
annular port at the bottom of the tube D, sufficient air being drawn into the
tube at the ports d to provide for perfect combustion. The vapors pass through
the tube D at considerable velocity, thereby insuring the necessary suction to
draw all of the vapors in at the lower port, and the proper amount of air at the
air-ports, and as they ascend they are caused to swirl by the bent ends of the
blades so that as they issue from the tube 1 they are completely consumed.
For convenience in lighting, the chimney K is provided with an aperture q
in its lower end, and this aperture may be covered by a band Q encircling and
sliding upon the chimney. As the casing M is entirely without perforations
there is no escape of unburned vapors when the lamp is first lighted, and as the
gallery E is without perforations there are no counter currents of air outside of
the mantle which would tend to disturb the flame within it.
While the invention is shown as relating particularly to a lamp, its form of
burner used is equally serviceable for heating purposes, and may be readily
adapted for use in connection with oil stoves.
In lighting the lamp, the aperture m is opened, the wick turned up sufficiently
so that a match may be applied to it when inserted through this aperture, and
is then turned down below the annular port at the base of the tube D. The
aperture 9 being opened, a lighted match may be inserted therein, and the ascend-
ing vapors escaping through the mantle will immediately ignite. The degree
of illumination may be controlled by raising and lowering the wick. The up-
wardly extending end of the tube B prevents the access of air to the flame; so
that the combustion is quite incomplete. By locating the air-ports of the burner-
tube above the vapor induction port, the air is directed thereto and prevented
from being drawn down into the vapor-port in greater quantity than is required
for the purpose in view.
Having now particularly described & ascertained the nature of the said
invention as communicated to me by my foreign correspondent & in what manner
the same is to be performed I declare that what I claim is:-
1 The combination with a single cylinder Bunsen burner tube having gas
induction ports and vapor induction ports, of a wick tube, the upper end of which
terminates at the side of the Bunsen tube and in close proximity to its vapor
ports, substantially as set forth.
2 The combination with a pair of concentric wick tubes, of a Bunsen burner
tube rising from the upper end of the inner wick tube and having vapor induc-
tion ports at its lower end, substantially as set forth.
3 The combination with a pair of concentric wick tubes, the outer tube rais-
ing above the inner tube, of a Bunsen tube rising from the inner wick tube and
having vapor induction ports at its lower end, substantially as set forth.
4-The combination with a pair of concentric wick tubes, the outer tube rais-
ing above the inner tube, of a Bunsen tube rising from the inner wick tube and
having vapor induction ports at its lower end and air induction ports above the
vapor ports, substantially as set forth.
5 The combination with a pair of concentric wick tubes, of a Bunsen burner

page_text: tube rising from the upper end of the inner wick tube and having vapor induc-
tion ports at its lower end, and an imperforate case inclosing the upper ends of
the wick tubes and the ported portion of the vapor tube, and being open at its
lower end, substantially as set forth.
6-The combination with a Bunsen burner tube, of deflecting blades located
within the tube between its ports and its discharge end, and being oblique to
its axis, substantially as set forth.
7-The combination with a pair of concentric wick tubes, of a plug fitting
the upper end of the inner tube, a plurality of radiating blades rising from the
plug and having their upper ends oblique to the axis of radiation, and a Bunsen
tube inclosing the blades and being of less diameter than the outer wick tube,
and having a port at its lower end and air induction ports between its lower end
and the upper ends of the blades, substantially as set forth.
8 In a vapor burner of the type described, the combination with a burner
tube, of an imperforate gallery radiating from the tube, and an imperforate
chimney rising from the gallery and making therewith a substantially air-
tight joint, substantially as set forth.
9--In a lamp, the combination with a burner and its casing, of a chimney
resting upon the casing, and spring-arms secured to the burner casing and bearing
upon the top of the chimney, substantially as set forth.
10-In a lamp, the combination with a burner and its casing, of bow spring-
arms secured to the casing and extending upwardly, a metal chimney secured to
the upper ends of such arms, and a glass chimney adapted to fit between the
burner casing and the lower end of the metal chimney, and to be secured by
the downward pressure of the latter due to the tension of the spring-arms, sub-
stantially as set forth.