IMPROVEMENTS IN APPARATUS OR MEANS POR FEEDING; AND BURNING MINERAL OILS AND ESSENCES FOR LIGHTING PURPOSES
Year: 1868

page_text: PROVISIONAL SPECIFICATION left by Clinton Edgcumbe Brooman
at the Office of the Commissioners of Patents, with his Petition,
on the 7th September 1868.-A communication from abroad by
Hippolyte Leplay and Jules Noel, both of Paris, France.
I, CLINTON EDGCUMBE BROOMAN, of the Firm of Robertson, Brooman,.
and Company, of 166, Fleet Street, in the City of London; Patent
Agents, do hereby declare the nature of the said Invention for.
"IMPROVEMENTS IN APPARATUS OR MEANS POR FEEDING; AND BURNING MINERAL
OILS AND ESSENCES FOR LIGHTING PURPOSES," to be as follows:-
This Invention comprises, first, a particular system or mode of feeding
burners in lighting apparatus with mineral oils or essences; and, secondly,
a particular system or arrangement of circular burner for the the
combustion of the oils and essences.
The system of feeding the lighting apparatus is based on the capillarity
obtained by a main or first conducting wick extending for any length
and fitted borizontally in a straight or bent tube on which the burners
are placed; the ends or other part of this wick dip into a chamber
containing the essence or oil, so that by its capillarity the wick becomes
impregnated with it for its whole length. From each burner a vertical

page_text: wick leads to the main wick and thereby also becomes impregnated by
capillarity with the essence or oil. The keeping at a constant level of
the liquid in the chamber into which the ends of the main wick dip is
obtained by a reservoir or bottle-like receptacle with a valve placed over
each chamber.
The burner employed is preferably circular; it is composed of several
concentric tubes with an inverted circulation of air; its wick is fixed
and the regulation of the light is effected by a movable glass carrier.
In constructing the burner three concentric tubes are employed having
spaces between them; these tubes are of different lengths, and their
lower ends are at the same level; the annular space between the two
outer is closed at hottom, that between the two inner is open, and the
space comprised within the innermost tube is closed at bottom; the outer-
most and innermost of these three spaces communicate through channels
passing through the other space. The outermost tube is screwed on a
cup of the tube which contains the main wick as before explained.
Air passes down within the outermost tube and then into and up
through the innermost tube to the centre of the burner and of the
flame. In the open annular space between the two inner tubes is a
fixed wick communicating at its lower end with the main wick, and at
its upper end with a plaited wick fixed to the upper part of the burner
round the innermost tube. The wicks being in fixed positions the light
is regulated by a movable glass carrier, this consists of a tube which
fits over one of the other tubes and is formed with a spiral slot to take
on to a pin on the other tube, so that it can be moved up or down to
regulate the light; a cap is fitted to the upper part of this tube and
covers it hermetically; it facilitates the removal of the top wick when
used.