Improvements in the Manufacture of Mantles or Luminous Bodies for Incandescent Gas-lamps, and in Compounds for Use in such Manufacture.
Year: 1895

page_text: Date of Application, 22nd May, 1895
Complete Specification Left, 6th Sept., 1895-Accepted, 28th Mar., 1896
Improvements in the Manufacture of Mantles or Luminous Bodies
for Incandescent Gas-lamps, and in Compounds for Use in such
Manufacture.
I, HENRI REESER, Junior, of 2 Damstraat, Amsterdam, in the Kingdom of the
Netherlands, Chemist, do hereby declare the nature of this invention to be as
follows:-
This invention relates to the manufacture of mantles or luminous bodies such as
are used in incandescent gas lamps, and to compounds for use in such manufacture.
My said invention comprises improvements whereby I am enabled to make mantles,
which, when heated in the usual way, will emit a more intense light than those
heretofore made without the use of thorium or thorinum oxide.
My improved compound contains the following ingredients in or about in the
proportions named :-
3 to 4 parts by weight of aethogen (boron nitride)
25 30
"
"
"
2
3
"
"
""
3
"
2
"
2
3
وو
و,
"
thallium (nitrate)
sagenite
samarium
neodymium
"
"
"
3
4
"
"
"
magnesium
"
I take the nitrates or other salts of the thallium, sagenite, samarium, neodymium
and magnesium, which salts may, if desired, be produced by dissolving the oxides
in nitric acid, acetic acid or other suitable acid, and I dissolve the said salts in
water so as to form a more or less concentrated solution thereof.
I dissolve the aethogen or boron nitride as far as practicable in heated nitric
acid and the undissolved residue I dissolve in ammonia; I then filter the dissolved
aethogen or boron nitride and add the filtrate to the solution above mentioned.
In making mantles or the like according to my said invention, I take the usual
cotton or other suitable fabric and impregnate it with the said solution. The
impregnated fabric is dried and the organic matter thereof is then burned away in
a Bunsen or other suitable flame so as to convert the said salts into oxides.
The mantles thus manufactured will produce a very intense light when used in
incandescent gas lamps.
The said mantles may be of any suitable form and texture for the purpose,
specified.
Dated the 22nd day of May 1895.
D. YOUNG & CO.,
11 & 12 Southampton Buildings, London, W.C.,.
Agents for the Applicant.

page_text: Improvements in the Manufacture of Mantles or Luminous Bodies
for Incandescent Gas-lamps, and in Compounds for Use in such
Manufacture.
I, HENRI REESER, Junior, of 2 Damstraat, Amsterdam, in the Kingdom of the
Netherlands, Chemist, do hereby declare the nature of this invention and in what
manner the samé is to be performed, to be particularly described and ascertained
in and by the following statement :-
This invention relates to the manufacture of mantles or luminous bodies such as
are used in incandescent gas-lamps, and to compounds for use in such manufacture.
My said invention comprises improvements whereby I am enabled to make mantles,
which, when heated in the usual way, will emit a more intense light than those
heretofore made without the use of thorium or thorinum oxide.
My improved compound is made by mixing the following ingredients as herein-
after described in or about in the proportions named :-

page_text: consisting of cotton or other suitable fabric which has been impregnated or
saturated with a solution compounded substantially as hereinbefore described.
Dated 6th day of September 1895.
°
D. YOUNG & Co.,
11 & 12 Southampton Buildings, London, W.C.,
Agents for the Applicant.