Improvements in Liquid Fuel Lamps.
Year: 1899

page_text: Date of Application, 19th Aug., 1899-Accepted, 18th Nov., 1899
Improvements in Liquid Fuel Lamps.
(A communication fromabroad by EDWARD MILLER&COMPANY a corporation resident
at Meriden, in the County of New Haven, and State of Connecticut, United States
of America Manufacturers.)
I, CHARLES AUBREYDAY, of 321, High Holborn, in the County of London, Chartered
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 an-improvement in lamps, especially in those of the
central-draft type; and of the character described in the Specification of Letters
Patent No.21734 A.D. 1898 and its object is to improve the construction thereof.
Fig. 1 is a side elevation, partly in section, of the device. Fig. 2 is a similar view
with the parts slightly in a different position.
In the preferred form of the invention shown in the drawings, 1 represents the
fount of a central draft-lamp, 2 the outer and 3 the inner wick-tubes, the outer wick
tube being slightly higher than the inner one, and 4 a wick moving between the
same.
5 is a spreader substantially in the form of a perforated cylinder, fitting, in this
embodiment within the inner wick-tube and having a flange 6 attached thereto
extending out over the wick and resting thereon, thus connecting the spreader with
the wick, in the sense that the spreader is moved by the movement of the
wick. As the wick is moved up and down the spreader is moved with it, and
when thewick is drawn down inside thewick-tubes this flange Gwill close the opening
between the tubes and extinguish the flame, as in the arrangement described in the
Specification of the aforesaid prior Letters Patent. The spreader has an inward
bend 12 above its lower end, in this embodiment opposite the flange 6.
This gives
a greater space between the inner side of the wick and the outside of the spreader
than if this spreader were of the same size from the bottom up and allows the vapor
and flame to burn from each side of the wick up through a space 13 between flange G
and the spreader. This results in a saving of the wick, because as the flame can
act on each side of the wick the wick need not be turned so high for a given flame
as in a construction where the flame can burn from only one side of the wick. This
inward bend also provides a space in which air from the spreader can mix with the
vapor coming from the inner side of the wick. The flange 7 projects from the upper
part of the spreader, and below and close to it is another flange 8, and between these
Hanges is a row of perforations 9.

page_text: Projecting up through the inside of the inner tube is a stationary rod 10, passing
through a hole in the top of the spreader and carrying at its upper end a stop 11.
When the height of the wick is determined which will give the most satisfactory
flame, the stop 11 is placed in such a position on the rod 10 that when the wick has
been raised to the said height the top of the spreader will come in contact with the
stop and the wick cannot be raised higher. This provides a stop for the wick and
prevents the wick being turned too high, as described in the Specification of the
aforesaid prior Letters Patent.
Other advantages will appear from an inspection of the disclosure herein, and I
do not desire to limit myself to-the-construction shown and described, no many
changes-may be made therein-without-departing from the spirit of the invention.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:-
1. In-a-device of the character described, in combination, an inner and an outer
tube forming between the same a passage in which a wick is adapted to move, a
movable-spreader and a stationary stop therefor within said inner-wick-tube.
21. In a device of the character described, an outer and an inner wick-tube, a
perforated spreader movable with relation thereto and having an inward bend near
the lower part of the same, and a flange carried by said spreader so as to be movable
therewith and located near said bend, said spreader and flangehavinga space between
the same for the escape of vapour.
3: 2. In a device of the character described, an outer wick-tube,an innerwick-tube
the top of the latter being slightly below that of the former, a perforated spreader
locatedwithin said enter inner tube and movable with relation to both said tubes, said
spreader carrying a flange adapted to fit within said outer tube and act as au
extinguisher, there being a space between the inside of said flange and the outside
of said spreader. from which space vapor and air can issue when the wick is raised.
4.--In-n-device-of-the-character-described, in combination a fount adapted-to-een-
tain a liquid fuel, a-wick-tube-extending above the same, a second wisk tube
smaller than the former also extending above-the-fount-and-contained in said outer
tube--so-ns to leave a space--between the same for the--passage-of the--wick,
a perforated cylindrical spreader, to supply-air-to-the-frame, movable with relation
to both of said tubes, a stationary post loented within said inner wick tube and
passing up through the top of said spreader and having a lateral-projection-above
the top-of-said-sprender-adapted to contact therewith when said-spreader-is-raised
to act as a stop-therefor.
B
DAY, DAVIES & HUNT,
Chartered Patent Agents, 321, High Holborn, London, W.C.,
Agents for the Applicant.