IMPROVEMENTS IN OIL LAMPS
Year: 1886

page_text: Date of Application, 31st Aug., 1886.
Complete Left, 30th June, 1887.
Complete Accepted, 9th Aug., 1837.
I JAMES ROOTS 25 The Avenue Tottenham N. Engineer do hereby declare the
nature of my invention for IMPROVEMENTS IN OIL LAMPS be as follows:-
The reservoir is preferably annular with an oil supply tube passing across from
each side to the wick case at the centre, at the top of which is the burner. The
wick case is annular and consists of two concentric tubes. The glass is bowl shaped
having a hole or aperture in the centre through the bottom of which the wick case
projects into the glass. The cone or cap of the burner is attached to the hole in the
glass by a perforated metal rim through which the air enters to supply the outside
surface of the flame a portion of the air for the inner surface of the flame passes up
through the inside of the wick case but the larger portion enters through tubes fitted
into the upper metal case of the lamp to which the glass is hinged and fastened by
means of a spring or other catch and in the centre of which upper metal case the
chimney is placed. The tubes project more or less downwards & have at their end
occupying the centre of the glass bowl or globe a metal chamber the lower surface of
which is perforated. Air passing down the tubes and into the metal chamber which
the flame surrounds becomes extremely heated before passing through the perforations
to supply the inner surface of the flame thus intensifying the light. The reservoir
through preferably annular may be of any construction.
An

page_text: I JAMES ROOTS of 25 The Avenue Tottenham, N. Engineer do hereby declare the
nature of my said invention and in what manner the same is to be performed to be
particularly described and ascertained in and by the following statement :-
The object of this invention is to obtain more intense light by supplying the flame
with heated air.
In the drawings the same letters refer to the same parts in both figures. A is the
reservoir with the oil supply tube B passing across to the wick case C at the centre
which is circular and consists of two concentric tubes. The glass D is bowl shaped
having a hole or aperture in the centre through which the wick case projects into the
glass and which also has that part E which corresponds to the cone in an ordinary
lamp attached in the aperture having a perforated metal or guaze rim through which
the air enters to supply the outside or lower surface of the flame. A portion of the
air for the inner surface of the flame passes up through the inside of the wick case
but the larger portion enters through tubes F, F, fitted into the upper metal case G
of the lamp to which the glass D is hinged and fastened by a spring or other catch
and in the centre of which upper metal case the chimney H is placed. The tubes
open into a metal chamber J which occupies the centre of the glass bowl or globe and
the lower surface of which is perforated. Air passes through the tubes F, F, and
into the metal chamber J which the flame surrounds therefore becoming extremely
heated before passing through the perforations to supply the inner surface of the
flame rendering the flame whiter and the light more brilliant. Air is also admitted
through perforations in G to supply the lower surface of the flame. The reservoir
though preferably annular may be of any construction also the chamber J may be
of any shape, its lower perforated surface may be flat.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed I declare that what I claim is :-
1. In an oil lamp the combination of a reservoir burner, a glass bowl with an
aperture in the bottom, tubes such as F and a chamber such as J arranged sub-
stantially as described and shown in the annexed drawings.
2. In an oil lamp a perforated chamber such as J in which the air is heated before
supplying the flame as described and shown in the accompanying drawings.
May or June 100.
H. GARDNER,
166, Fleet Street, London,
Agent for the said James Roots.