Improvements in Lamp Burners.
Year: 1886

page_text: Improvements in Lamp Burners.
I, CHARLES ARTHUR ALLISON, of the firm of Allison Brothers, of 52 Chancery
Lane, London, in the 'County of Middlesex, Patent Agents, do hereby declare the
nature of this invention (which has been communicated to me from abroad by
Henry Edward Shaffer, of Rochester, New York, United States of America,
Manufacturer), and in what manner the same is to be performed, to, be particularly
described and ascertained in and.by the following statement :—
My improvement relates to that class of lamp burners, in which two or more
wicks are used, and consists in the following construction and arrangement. In
the drawings,
Fig. 1 is a plan view of the burner having three separate wicks and cones.
Fig. 2 is a similar view of a burner having two separate wicks and cones.
Fig. 3 is a vertical sectional view in line x, x, of Figs. 1 and 2.
A indicates the burner, which is of usual form, and is capable of being screwed
into the top of the lamp, in the usual way. B, B, B, are the wick tubes, three
being shown in Fig. 1, and two in Fig. 2. C, C, C, are the wicks which rest in the
wick tubes, and are adjusted up and down by the ordinary spur wheels, or by any
other suitable means. These wick tubes are of peculiar form, being straight or'
vertical at their upper and lower ends, and curved in their central portions, as
shown. By this means the upper ends can be set at such distance apart, as to
accomodate the separate cones or deflectors placed over them, as hereinafter
described, while the lower ends are drawn in to pass down through the ordinary
sized collar of the burner that screws, into the top of the lainp. At the same
time the wicks can pass through the curved position without difficulty, and at the
top they stand vertical under the slit of the cone. This curved form of the wick
tubes with the ends standing vertically and their flat sides toward the centre of
the burner, in connection with separate cones, constitutes one feature of my
invention. Ordinarily in this class, of burners the tubes have been extended out
angularly and in a straight length, which brings the wicks to one side of the slot
in the cones, impeding the combustion, and producing difficulty in trimming.
When such tubes have been used they have had a single, cone covering them all.
By constructing the tubes in the curved form described they stand with their flat
sides toward the centre of the burner, which facilitates the introduction of the air
to the centre space between the cones, as hereinafter more fully described.
F is a cone plate forming the top of the burner, to which are attached as many
cones D, D, D, as there are wick tubes. These cones are separate from each other,
each covering its own wick tube, and each being slotted in the usual way. The
cone plate is provided with a series of small holes, a, a, a, which lie between the

page_text: cones, and allow the air to pass up between the flames from the interior of
the burner. These holes may also extend around the cones, as shown in Figs. 1
and 2.
E is a screen or perforated plate lying below the cone plate, leaving a clear air
space between and serving to break the currents of air as they pass to the blaze.
Below the perforated plate is an arched shaped division-plate G, which extends
across the body of the burner, and divides it into two chambers. The division
plate is provided with holes b, b, for the passage of the air from the lower to the
upper chambers. In the sides of the burner are inade two sets of perforations c, d,
one set opening into the upper chamber and the other into the lower one, as shown
in Fig. 3
By the arrangement' above described, a full supply of cold air is fed both into
the upper and lower chambers of the burner, which has the effect of keeping the
interior of the burner perfectly cool, and preventing the conducting of the heat
down into the oil, which, so far as I am aware, has never before been done in a flat
wick lamp. The cold air in the lower chamber circulates below the blaze and
immediately over the oil fount; thence. it passes-through the perforations, b, b, and
uniting with the current in the upper chamber, it passes through the wire screen,
and thence through the holes in the core plate, and between the cones, where it
feeds the interior of the flames: The tendency of the air entering the upper
chamber, is to pass directly outside the cones, to the blaze, that being the shorter
passage, but the addition of the currents, from the inside chamber, is sufficient ito:
supply the inside, as well as the outside of the flame! The volume of air passing.
up from the lower chamber is held in its direct course upward by the pressure of
the currents on opposite sides coming into the upper chamber; therefore it passes
directly up through-the perforations between, the icones, and feeds the inside com-
bustion, while the outer currents, pass. up and, feed the interior of the cones; a
portion also passing up outside the cones, and feeding the combustion at that
point.
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:
I
1st In a lamp burner, the combination, with the burner, of' two or more separate
cones, and two or more wick tubes, the wick, tubes being curved so as to bring the
upper ends centrally under, the cones and the lower ends within the burner collar
that screws into the top of the lamp, as set forth.
"
2nd In a lamp burner, the combination with the burner, of two or more' separate
cones and two or more wick tubes, the wick tubes. being curved to bring their
upper ends centrally under the cones and their lower ends within the compass of
the burner collar that screws into the top of the lamp, and said wick tubes being
arranged with their flat sides toward the centre, of the burner, and toward each
other, as hereinbefore set forth.
3rd In a lamp burner, the combination of the burner having two sets of openings
on its outer shell, a perforated division plate which divides the burner into two
chambers, between the openings in its sides, two or more curved wick tubes in the
burner, two, or more separate cones covering the wick tubes, and, a cone plate
provided with perforations between the cones, as and for the purpose specified.
Dated this 24th day of April 1886..