Year: 1887

page_text: Date of Application, 11th Jan., 1887
Complete Left, 5th Oct., 1887
Complete Accepted. 8th Nov., 1887
I, HENRY SCHLICHTER, of 41, 42, 43, and 44, Fore Street, in the City of London,
Doctor of Natural Science, do hereby declare the nature of this invention to be as
follows:-
In platinum lamps, as heretofore usually constructed, platinum wire has been wound
around the wick and holder, or platinum foil has ested on the same parts. This has
caused great loss of heat on account of the conductivity of the wick holder, and
frequently the metal has failed to glow. Furthermore the platinum when there has
been contact with the wick has undergone change and has become so fragile that it
has often broken when removed for cleaning and other purposes.
Now the object of this invention is to obviate these difficulties. To this end a helix
or spiral of platinum wire has one end bent so that it passes through the centre of the
coil, of which it then forms the axis. This end, when the coil in position in the
lamp, rests in a small tube of refractory material (usually glass or fire clay) located
in or near the centre of the wick, the whole being so arranged that the convolutions
of the helix or spiral are situated over the wick. The bottom convolution may, if
desired, rest upon the wick. Or instead of a helical or spiral shaped wire, various
other forms or shapes, such for examples as balls, cylinders, or cones, constructed of
wire or foil may be used, being fixed over the wick in such a way that they are isolated
from all metallic contact.
When the lamp thus constructed is lighted, it burns with a flame, which has to be
extinguished by rapidly placing on and removing a cover as soon as the platinum
glows. This will then, as is known, remain in a glow until all the spirit, by which the
lamp is heated, has evaporated. When a lamp of this kind is burning, the practical
effect is that the air immediately surrounding the helix or spiral or equivalent becomes
heated, rises, and is replaced by air flowing in from all sides under the glowing spirals
or parts through which it is compelled to pass, causing any combustible matter
contained in the air to be consumed.

page_text: If a small quantity of volatile deodorizing substance or perfumes such as camphor
or ozogen or turpentine or cau de Cologne, be mixed with the spirit, this is not at
once consumed, but continuously mingles with the atmosphere in very fine proportions,
and thus destroys offensive smells in the atmosphere.
The use of the lamp is therefore beneficial in badly ventilated rooms.
By this invention the platinum is safely.attached, but so nevertheless that it can be
taken off with perfect ease, if it has to be cleaned or the lamp has to be filled.
The whole of the platinum is well within reach of the ascending hot air and of the
spirit vapour, and a considerable saving is effected in the quantity of spirit consumed
as compared with lamps as heretofore constructed for the purposes referred to.
Dated this 10th day of January 1887.
W. LLOYD WISE,
Per C. E. Brougham,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.

page_text: Improvements in Platinum Lamps for Deodorizing and Disinfecting
Purposes.
I, HENRY SCHLICHTER, of 95 Milton Street, in the City of London, Doctor of Natural
Science 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: -
In platinum lamps as heretofore usually constructed, platinum wire has been wound
around the wick and holder, or platinum foil has been fastened to the samo parts.
This has caused great loss of heat on account of the conductivity of the wick holder
and frequently the metal has failed to glow.
Furthermore, the platinum when fastened to the wick-holder, has undergone change
and has become so fragile that it has often broken when removed for cleaning and
other purposes.
Now the object of this invention is to obviate these difficulties. To this end a
helix or spiral of platinum wire has one end bent so that it passes through the centre
of the coil, of which it then forms the axis (or approximately so). This end, when
the coil is in position in the lamp, rests in a small tube of refractory material (usually
glass or fire-clay) located in or near the centre the wick the whole being so arranged
that the convolutions of the helix or spiral are situated over the wick. The bottom
convolution, may, if desired, rest upon the wick. Or instead of a helical or spiral
shaped wire, various other forms or shapes, such for examples as balls, cylinders, or
cones constructed of wire or foil may be used, being fixed over the wick in the described
manner so that they are isolated from all metallic contacts.
When the lamp thus constructed is lighted, it burns with a flame, which has to be
extinguished by rapidly placing on and removing a cover as soon as the platinum
glows. This will then, as is known, remain in a glow until all the spirit, by which the
lamp is heated, has evaporated. When a lamp of this kind is burning, the practical
effect is that the air immediately surrounding the helix or. spiral or equivalent
becomes heated, rises, and is replaced by air flowing in from all sides under the
glowing spirals or parts through which it is compelled to pass, causing any combustible
matter contained in the air to be consumed.
If a small quantity of volatile deodorizing substance or perfumes such as camphor
or ozogen or turpentine or eau de Cologne, be mixed with the spirit, this is not at once
consumed, but continuously mingles with the atmosphere in very fine proportions, and
thus destroys offensive smells in the atmosphere.
The use of the lamp is therefore beneficial in badly ventilated rooms.
By this invention the platinum is safely attached, but so nevertheless that it can be
taken off with perfect ease if it has to be cleaned or the lamp has to be filled.
The whole of the platinum is well within reach of the ascending hot air and of the
spirit vapour, and a considerable saving is effected in the quantity of spirit consumed
as compared with lamps as heretofore constructed for the purposes referred to.

page_text: The accompanying drawing shows in vertical section one of the many forms of lamps
to which this invention can be applied.
A is the reservoir for spirit; B the stand: C the wick supporting tube; and D the
wick of the lamp. E is a cap or cover shown in dotted lines placed over the exposed
end of the wick etc., when the lamp is not in use. It will be evident that these parts
may be in other forms than those indicated. F is a spiral coil of platinum wire, in
which expression I include not only wire made entirely of platinum but analagous
wire as for example wire of other metal or alloy that will not fail under the heat pro-
duced by the evaporation of the spirit of wine such metal or alloy being coated with
platinum either by simple emmersion, electro plating, or in any other suitable manner.
One end or portion of this wire is bent so that it passes as indicated at G, through the
coil. His a small tube of refractory material, prefering glass or fire clay, arranged
in or near the centre of the upper part of the wick; into it enters the lower end of the
straight part G of the coil, the whole being so arranged that the convolutions of the
coil are situated over the wick D. The bottom convolution may, if desired, rest
upon the wick. By the above described arrangement the wire is safely held well
within reach of the ascending hot air and of the spirit vapour but in such a way never-
theless that it may be readily removed for cleaning and other purposes. As already
stated other forms or shapes of wire or foil may be employed in liew of the spirally
arranged round wire indicated in the drawing.
Having now particularly described and ascertained the nature of this invention and
in what manner the same is to be performed I declare that what I claim is :-
-
In a lamp for deodorizing and disinfecting purposes, the hereinabove described
method of applying and retaining by the use of a tube of refractory material located
in or near the centre of the upper part of the wick, a metallic helix or spiral, or
equivalent, so that the metal is safely held so as to be impinged upon by ascending
hot air and spirit vapour, but so nevertheless that it can be easily removed for cleaning
or other purpose.