IMPROVEMENTS IN LAMPS
Year: 1875

page_text: PROVISIONAL SPECIFICATION left by Walter Carr at the Office
of the Commissioners of Patents, with his Petition, on the 5th
April 1875.
I, WALTER CARR, of Upper Holloway, in the County of Middlesex,
Engineer, do hereby declare the nature of my said Invention for
"IMPROVEMENTS IN LAMPS," to be as follows:-
My Invention relates more particularly to lamps having argand or
tubular burners for burning petroleum, coal oil, or other hydrocarbon,
and it consists chiefly of certain improvements in the construction and
arrangement of the mechanism for raising and lowering the wick, and of
an improved construction of burner, but it also embraces other improve-
ments applicable to lamps of this class.
In carrying out my Invention I attach to the interior of the bottom
of the oil chamber or container a metal tube extending to some distance
above the top of such chamber or container, upon which tube slides tho
wick carrier consisting of a tube of metal, the internal diameter of
which corresponds to the external diameter of the first-mentioned tube.
The lower end of the wick tube, which is situate within the oil chamber
or container, carries a horizontal arm, which is provided on its outer

page_text: extremity with a fixed nut, in which works a screwed spindle for raising
and lowering the wick tube, and consequently the wick with which it
is surrounded. The screwed spindle, which is made hollow, rotates upon
a tube fixed in the bottom of the oil chamber or container, and is
actuated from below by means of a metal rod, which passes up from
bencath the oil chamber or container through the metal tube and into
the top of the screwed spindle, where it is fixed by means of solder, or
by being screwed or riveted therein. The burner consists of a metal
tube, which surrounds the upper part of the wick, and is provided with
a cone or shield composed by preference of sheet brass or copper tinned
or electro-plated with silver or other suitable white metal, to which cone
or shield the tube is connected by means of two or more radial arms
soldered or otherwise secured thereto. The burner tube has attached
thereto a ling of wood, cbonite, or other suitable non-conducting
material, which fits into an opening formed to receive it in the top of
the oil chamber or container, and it is made slightly trumpet-mouthed
at its lower end in order to facilitate its passage over the wick when
placing it in position.
On to the exterior of the conical portion of the burner I solder or
otherwise secure metal pins or wires, which enter the lower portions or
necks of the glass chimney and globe, and hold the said glasses in
position whilst admitting of the glass expanding without the risk of
breaking. Air for supporting combustion is admitted to the burner
beneath the metal conc, and also through openings formed in a metal
plate, which is secured to the bottom of the tube fixed in the oil
chamber or container, and which plate is also provided with a screw for
the purpose of attaching the oil chamber to the lamp stand. Over the
burner there is placed a metal deflector, which is carried upon the
screwed end of a rod or spindle passing through the tube last referred
to, and fixed to the metal at the bottom thereof, so as to admit of such
deflector being raised and lowered by the act of rotating it upon the rod
or spindle; or the cone or shield may be extended to a sufficicnt
distance beyond the central tubes, and the deflector be dispensed with,
by which means a contracted cylindrical flame may be obtained in lieu
of a deflected flame, as in the arrangement herein-before described.