Improvements in the Manufacture of Glow-bodies for Incandescence Burners.
Year: 1898

page_text: Date of Application, 21st July, 1898
Complete Specification l'eft 21st Ane 1800 40cented 10th Luno 1000
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Glow-bodies for Incandescence
Burners.
I, GEORG KOHL, of VIII Bennoplatz S, Vienna, Austria, Chemist, do hereby
declare the nature of this invention to be as follows:-
In the glow-bodies for incandescence-burners heretofore known, the upper
folded part of the mantle has been painted, at the place where it has been
attached by means of asbestos threads to the wire hook, with a solution of
aluminium nitrate, magnesium nitrate, or beryllium nitrate, with the object
of preventing the glow-body from being torn away from its support.
Now all the attempts that have been heretofore made for this purpose have,
however, not had the desired success, because the mixtures employed for
impregnating the top of the glow-body become either too hard and consequently
brittle and crumbly, so that the glow-body is broken off by shocks; or the top
of the glow-body remains too soft, as when beryllium is employed, and comes
undone, and the mantle consequently is very easily and quickly destroyed.
Now, the object of this invention is to strengthen the top of the glow-body
so that it will be neither soft nor brittle, but will be as tenacious as possible,
and consequently, along with a unique elasticity, will have sufficient strength
produced by its tenacity when incinerated. According to the method employed
for producing this strengthening, the top of the glow-body (which has been
impregnated according to any method with the substances that produce the emis-
sion of light, or also with strengthening substances) is impregnated with a
solution produced by dissolving in 1.5 kilogrammes of water, 300 grammes of
aluminium nitrate, 300 grammes of magnesium nitrate, 2 grammes of chromium
nitrate, grammes of manganese nitrate, 20 grammes of calcium nitrate, 5
grammes of alum, and 5 grammes of borax.
The top of the glow-body is only moderately saturated with this solution,
and, in the subsequent drying operation, the glow-body is hung with the top
downwards, for the purpose of preventing the solution from spreading over any
considerable portion of the light-emitting surface of the mantle, because this
solution would diminish the illuminating power thereof.
The solution, which, however, in consequence of the suction, does spread in
the narrow portion of the mantle next to the top or head, has the result, since it
diminishes gradually in the strip, of producing the desired gradual merging of
the tough strengthened head into the (after incineration) elastic and simple
mantle without affecting the capacity for emitting light.
After drying, which is to be rapidly done, the glow-body is attached, in the

page_text: usual manner, to the wire hook and is finally glowed, whereby all the substances
with which the glow-body is impregnated are convented into the corresponding
oxides.
Dated that love of T... 1000
F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.
F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.
Improvements in the Manufacture of Glow-bodies for Incandescence
Burners.
I, GEORG KOIL, of VIII Bennoplatz 8, Vienna, Austria, Chemist, 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 the glow-bodies for incandescence-burners heretofore known, the upper
folded part of the mantle has been painted, at the place where it has been
attached by means of asbestos threads to the wire look, with a solution of
aluminium nitrate, magnesium nitrate, or beryllium nitrate, with the object
of preventing the glow-body from being drawn away from its support.
Now all the attempts that have been heretofore made for this purpose have,
however, not had the desired success, because the mixtures employed for
impregnating the top of the glow-body become either too hard and consequently
brittle and crumbly, so that the glow-body is broken off by shocks; or the top
of the glow-body remains too soft, as when berylliuin is employed, and comes
undone, and the mantle consequently is very easily and quickly destroyed.
Now the object of this invention is to strengthen the top of the glow-body
so that it will be neither soft nor brittle, but will be as tenacious as possible,
and consequently, along with a unique elasticity, will have sufficient strength
produced by its tenacity when incinerated. According to the method employed
for producing this strengthening, the top of the glow-body (which has been
impregnated according to any method with the substances that produce the emis-
sion of light, or also with strengthening substances) is impregnated with a
solution produced by dissolving in 1.5 kilogrammes of water, 300 grammes of
aluminium nitrate, 300 grammes of magnesium nitrate, 2 grammes of chromium
nitrate, 2 grammes of manganese nitrate, 20 grammes of calcium nitrate, 5
grammes of alum, and 5 grammes of borax.
The top of the glow-body is only moderately saturated with this solution,
and, in the subsequent drying operation, the glow-body is hung with the top
downwards, for the purpose of preventing the solution from spreading over any
considerable portion of the light-emitting surface of the mantle, because this
solution would diminish the illuminating power thereof.
1
The solution, which, however, in consequence of the suction, does spread in
the narrow portion of the mantle next to the top or head, has the result, since it
diminishes gradually in the strip, of producing the desired gradual merging of
the tough strengthened head into the (after incineration) elastic and simple
mantle without affecting the capacity for emitting light.
After drying, which is to be rapidly done, the glow-body is attached, in the
usual manner, to the wire hook and is finally glowed, whereby all the substances
with which the glow-body is impregnated are convented into the corresponding
oxides.

page_text: Having now particularly described and ascertained the nature of the said in-
vention, and in what manner the same is to be performed, I declare that what I
claim is:-
For the purpose of strengthening the heads or tops of glow-bodies for incan-
descence-burners, moistening the previously impregnated and dried glow-bodies
at their heads or tops before fixing the same to their supports with a solution of
aluminium nitrate, magnesium nitrate, calcium nitrate, chromium nitrate,
manganese nitrate, alum and borax, in the proportions stated, the said solution
imparting tenacity to the head or top portions after the incineration of the glow-
body as set forth.
Doted his 21st day of A 1800
F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.