Improvements in or relating to the Soldering of Aluminium and its Alloys.
Year: 1894

page_text: Date of Application, 23rd Nov., 1894
Complete Specification Left. 9th Sept., 1895-Accepted, 12th Oct., 1895
PROVISIONAL SPECIFICATION.
Improvements in or relating to the Soldering of Aluminium and
its Alloys.
I, LUDWIG OLIVEN, of 14 Anhalt Strasse, Berlin, in the Empire of Germany,
Manufacturer, do hereby declare the nature of this invention to be as follows:-
My invention relates chiefly to the soldering of aluminium bronze. It is
however applicable to the soldering of other alloys of aluminium and also of
unalloyed aluminium.
According to my invention prior to the application of the solder to the surfaces
to be united I coat the said surfaces with a fluid or flux consisting of a mixture of
stearine and petroleum oils preferably mixed in equal proportions. By these means
a firm union of the surfaces is effected aud a joint is made that will not deteriorate
in time as is usually the case with ordinary soldered joints of aluminium or its
alloys.
When soldering aluminium bronze the metal parts to be united are first heated
by a hot plate or otherwise and the fluid or flux before mentioned is then applied
to the surfaces; the solder is next applied and then the parts are firmly pressed
together, a perfect union being thereby produced. I prefer to use for this purpose,
the solder described in the Specification of prior Letters Patent No. 21162
A.D. 1892.
For soldering aluminium it is necessary to scratch or brush by sharp instruments
the surfaces to be united while the same are immersed in a bath of the solder and
thereby excluded from contact with the air in the manner described in the
Specification of Letters Patent No. 23477 A.D. 1892. In such a case the fluid or
flux is applied to the surfaces during or just before the brushing operation. The
soldering is then completed in the manner described in the Specification of the
said Patent No. 2347799.
COMPLETE SPECIFICATION.
Improvements in or relating to the Soldering of Aluminium and
its Alloys.
I, LUDWIG OLIVEN, of 14 Anhalt Strasse, Berlin, in the Empire of Germany,
Manufacturer, 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 :-
My invention relates chiefly to the soldering of aluminium bronze. It is
however applicable to the soldering of other alloys of aluminium and also of
unalloyed aluminium.
According to my invention, prior to the application of the solder to the surfaces
of the parts to be united, I coat the said surfaces with a fluid or flux consisting of

page_text: a mixture of stearine and petroleum oils preferably in equal proportions. By
these means a firm union of the parts is effected and a joint is made that will not
deteriorate in time as is usually the case with ordinary soldered joints of aluminium
or its alloys.
When soldering aluminium bronze the metal parts to be united are first heated
by the soldering iron or otherwise and the fluid or flux before mentioned is then
applied to the surfaces of the said metal parts; the solder is next applied and then
the parts are firmly pressed together. a perfect union being thereby produced.
I prefer to use for this purpose, the solder described in the Specification of prior
Letters Patent No. 21162 A.D. 1892.
For soldering unalloyed aluminium it is necessary to scratch or brush by sharp
instruments the surfaces of the parts to be united while the same are immersed in
a bath of the solder and thereby excluded from contact with the air in the manner
In such
described in the Specification of Letters Patent No. 23477 A.D. 1892.
a case the fluid or flux is applied to the surfaces of the parts during or just before
the scratching or brushing operation. The soldering is then completed in the
manner described in the Specification of the said Patent No. 23477 A.D. 1892.
said
Having now particularly described and ascertained the nature of my
invention and in what manner the same is to be performed, I declare that what
I claim is
1. In the operation of soldering aluminium or its alloys the employment of a
fluid or flux consisting of a mixture of stearine and petroleum oils preferably in
equal proportions, substantially as, and for the purpose, described.
2. The methods of soldering aluminium and its alloys, substantially as herein-
above described.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.