Improvements in the Manufacture of Incandescence Bodies for Illuminating Purposes.
Year: 1896

page_text: This Print is in accordance with the Original Specification as it stands after
Amendment (under Section 11 of the Patents, &c. Act, 1883) as required by
the decision of the Chief Examiner of the 30th day of November 1897.
Date of Application, 30th July, 1896
Complete Specification Left, 30th Apr., 1897-Accepted, 5th June, 1897
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Incandescence Bodies for
Illuminating Purposes.
I, WILLIAM NICHOLLS, of 23 Holborn, in the County of London, Gentleman,
do hereby declare the nature of this invention to be as follows:-
This invention has for its object the production of hoods or mantles for gas or
other burners which by the action of the flame of the burner are rendered
incandescent and thereby greatly increase the illuminating power of the flame.
According to my invention I impregnate the hood or mantle, which may be
made of any suitable fabric, with the solutions of salts hereinafter specified, the
mantle being afterwards subjected to the heat of a flame in the ordinary manner so
that the fabric is consumed while the frame or skeleton, consisting chiefly of the
oxides of the metals employed, remains and, which when heated to incandescence,
emits a powerful light.
According to my invention I make a solution of zirconium nitrate, calcium
nitrate and ammonium nitrate, in water. To this I add a small quantity of a
solution containing palladium chloride, platinum chloride, or other soluble palladium
or platinum salts and tartar emetic.
Instead of the nitrates enumerated I can use other soluble salts of zirconium or
calcium, such as the acetate or sulphate, and instead of the tartar emetic I can use
other suitable soluble salts of antimonium such as the chloride.
The hood or mantle having been made of any suitable fabric to the desired form
is saturated in an aqueous solution made according to either of the above formulæ
and dried in the ordinary manner, when it is fit for use, the first application of a
flame consuming the fibrous constituent and leaving only the frame or skeleton of
metallic oxides remaining.
Dated this 20th don of Tul 1906
WHEATLEY & MACKENZIE,
40 Chancery Lane, London, W.C., Agents.

page_text: COMPLETE SPECIFICATION (AMENDED).
Improvements in the Manufacture of Incandescence Bodies for
Illuminating Purposes.
I, WILLIAM NICHOLLS, of 23 Holborn, in the County of London, Gentleman,
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:-
This invention has for its object the production of hoods or mantles for gas or
other burners which by the action of the flame of the burner are rendered
incandescent and thereby greatly increase the illuminating power of the flame.
According to my invention I impregnate the hood or mantle, which may be
made of any suitable, fabric, with the solutions of salts hereinafter specified, the
mantle being afterwards subjected to the heat of a flame in the ordinary manner so
that the fabric is consumed while the frame or skeleton, consisting chiefly of the
oxides of the metals employed, remains, and which, when heated to incandescence
emits a powerful light.
According to my invention I make a solution of zirconium nitrate, calcium
nitrate and ammonium nitrate, in water. To this I add a small quantity of a
solution containing palladium chloride, platinum chloride or other soluble palladium
or platinum salts and tartar emetic.
Instead of the nitrates enumerated I can use other soluble salts of zirconium or
calcium, such as the acetate or sulphate, and instead of the tartar emetic I can use
other suitable soluble salts of antimonium such as the chloride.
A solution which I have found to give excellent results in practice is prepared as
follows:-
2 grammes of palladium chloride dissolved in 100 grammes of water and
3 grammes of platinum chloride dissolved in 100 grammes of water are each mixed
with 25 grammes of tartar emetic and 25 drops of each or 50 drops of their mixture
are added to a solution consisting of:-
12 grammes of zirconium nitrate
6
grammes of calcium nitrate
8 grammes of ammonium nitrate.
The hood or mantle having been made of any suitable fabric to the desired form
is saturated in an aqueous solution made according to the above formula, and dried
in the ordinary manner, when it is fit for use, the first application of a flame
consuming the fibrous constituent and leaving only the frame or skeleton of metallic
oxides remaining.
It will be found that a mantle made as above described will be self-lighting that
is to say if placed over the usual Bunsen burner it will on turning on the gas ignite
itself.
.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that I am aware
of the specification of letters patent granted to J. F. Duke No. 6585 of 1896, and I
lay no claim to anything which is described and claimed therein but what I
claim is:
1. A self igniting incandescence body for illuminating purposes made as above
described.
2. A solution for impregnating incandescence bodies for illuminating purposes
prepared according to the above formula.

page_text: 3. A solution for use in the manufacture of incandescence bodies for illuminating
purposes prepared substantially as described according to the formula above.
Dated this 30th day of April 1897
WHEATLEY & MACKENZIE,
40 Chancery Lane, London, W.C., Agents.