The Manufacture of a New Aluminium Alloy.
Year: 1895

page_text: Date of Application, 8th Nov., 1895
Complete Specification Left, 10th Aug., 1896-Accepted, 12th Sept., 1896
The Manufacture of a New Aluminium Alloy.
I, REINHARD ISIDORE ROMAN of 31 Lombard Street in the City of Loudon,
Metallurgical Chemist, do hereby declare the nature of this invention to be as
follows:-
My invention relates to the manufacture of a new aluminium alloy. This alloy
consists of aluminium and a comparatively small proportion of nickel and tungsten.
The proportions may be varied but I may mention as suitable proportions for
manufacturing the alloy 98 parts of commercial aluminium 1 part of nickel and
1 part of tungsten. The amount of nickel used should be at least equal to that of
the tungsten, but eventually can be increased.
I can manufacture the alloy in several ways:-
I can for example make an alloy of the nickel and tungsten and then add the
aluminium. For this purpose I first melt the nickel and I then add thereto pure
tungsten in the amorphous state. The tungsten is preferably contained in a case
or receptacle of aluminium to prevent the oxidation of the tungsten.
When the molten nickel and tungsten have become alloyed which will become
manifested by the quieting down of the metal after evidence of chemical action, the
aluminium is added.
According to another way I first tungstenize the aluminium and then add it to
molten nickel. This can be effected by first mixing tungstic acid with cryolite in
about equal proportions and melting them; then when the bath is fluid the beat is
raised to about 1200° Celsius, and the aluminium is added in such a proportion as
to produce a 10 per cent. compound of aluminium. The cryolite which first only
acted as a flux becomes a reducing agent and the tungstic acid becomes metallic
tungsten which alloys with the excess of aluminium. Further aluminium is then
added in sufficient quantity for the final alloy and the alloy of aluminium and
tungsten thus obtained is then added to the molten nickel in sufficient quantities to
bring it up to the required proportions.
The improved aluminium alloy above described while possessing all the properties
of aluminium as far as regards weight, ductility, color and resistance to corrosion,
is of greater tensile strength, has a far greater elasticity, can be easier machined
and takes a finer polish.
Dated th: 0L
SNL
1008

page_text: The Manufacture of a New Aluminium Alloy.
I REINHARD ISIDORE ROMAN, of 31 Lombard Street in the City of London,
Metallurgical Chemist, do hereby declare the nature of this invention for "The
Manufacture of a New Aluminium Alloy" and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement :-
My invention relates to the manufacture of a new aluminium alloy. This alloy
consists of aluminium and a comparatively small proportion of nickel and tungsten.
The proportions may be varied, but. I may mention as suitable proportions for
manufacturing the alloy, 98 parts of commercial aluminium, 1 part of nickel and
one part of tungsten. The amount of nickel used should be at least equal to that
of the tungsten, but eventually can be increased.
1 can manufacture the alloy in several ways:-
I can for example make an alloy of the nickel and tungsten and then add the
aluminium. For this purpose I first melt the nickel and I then add thereto pure
tungsten in the amorphous state. The tungsten is preferably contained in a case
or receptacle of aluminium to prevent the oxidation of the tungsten.
When the molten nickel and tungsten have become alloyed which will become
manifested by the quieting down of the metal after evidence of chemical action, the
aluminium is added.
According to another way I first tungstenize the aluminium and then add it to
molten nickel. This can be effected by first mixing tungstic acid with cryolite in
about equal proportions and melting them; then when the bath is fluid the heat is
raised to about 1200° Celsius and the aluminium is added in such a proportion as
to produce a 10 per cent. compound of aluminium. The cryolite acts as a flux; the
reducing agent is the aluminium; the tungstic acid becomes metallic tungsten,
which alloys with the excess of aluminium. Further aluminium is then added in
sufficient quantity for the final alloy, and the alloy of aluminium and tungsten thus
obtained is then added to the molten nickel in sufficient quantities to bring it up to
the required proportions.
The improved aluminium alloy above described while possessing all the properties
of aluminium as far as regards weight, ductility, color and resistance to corrosion,
is of greater tensile strength, has a far greater. elasticity, can be easier machined
and takes a finer polish.
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 what I
claim is :-
The manufacture of a new aluminium alloy consisting of aluminium, nickel and
tungsten, in the manner and proportions substantially as described.
Dated this 10th day of August 1896.
J. C. MEWBURN & ELLIS,
55 and 56 Chancery Lane, London, W.C., Chartered Patent Agents.