Improvements in Oil Lamp Burners.
Year: 1898

page_text: Improvements in Oil Lamp Burners.
I, HEINRICH HEMPEL, of No. 4, Waterloo Ufer, Berlin, in the Empire of Germany,
do hereby declare the nature of my invention and in what manner the same is to
be performed to be particularly described and ascertained in and by the following
statement :-
The present invention consists of a device for preventing the escape of the
illuminating fluid at the exposed end of the wick of a lamp, when the latter is not
burning.
And in order to render the present specification more easily intelligible reference is
had to the accompanying drawing in which similar letters of reference denote similar
parts throughout the several views :-
Fig. 1 shows a part of the burner of a lamp with the wick tubes in vertical section
and the closing device for the end of the wick in its lowered position.
Fig. 2 is a similar elevation showing the closing device in its raised position.
The wick m is annular and is guided in the usual manner within the wick tubes a,
having at one side an air inlet d. The flame distributing disc i is supported in the
well known manner above the upper wick end.
Enclosing the exterior upper part of the wick tube a is a mantle 6 whilst a second
mantle c fits round the interior part of the said wick tube, said second mantle being
The outer mantle is cut
advantageously somewhat shorter than the outer one.
away to correspond with the air opening so as not to close the same when the two
mantles are in their lowest position and the interior mantle is rigidly connected to
the exterior one by means of a connection or arm e fast to the interior mantle and
extending through the air opening d having its outer end rigidly attached to the
outer mantle.
To the interior mantle is fixed a downwardly extending rack f which may be operated
by a pinion on the shaft d¹, to raise and lower the mantles b and c.
The operation of the device will be readily understood; when the lamp is extin-
guished, the mantles band care raised by turning the button g until they close against
the under side of the distributing disc, in which position they effectually prevent the
loss of the illuminating fluid by evaporation at k at the open wick end h.
The means for raising and lowering the wick are shown at and are of the ordinary
well known construction.
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:-
In an annular burner having a flame distributing disc, the arrangement of an inner
and outer mantle c and 6 closing on to the interior and exterior of the upper part
of the wick tube, means for rigidly connecting the said mantles and a rack and pinion
mechanism to raise the mantles from their lowest position, below the free wick end
to the highest position, in which the ends of the said mantles close against the under
side of the flame distributing disc i substantially as described.

page_text: 2:-The device substantially as described and illustrated in the accompanying
drawings.
Dated this 25th day of January 1898.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.