Year: 1898

page_text: A communication by GEORGES PARENT, of 52, Rue St. Georges, Paris, in the
Republic of France, Engineer.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for Foreign
Patent Solicitors, 6, Lord Street, Liverpool, and 6, Bank Street, Manchester,
both in the County of Lancaster, 118, New Street, Birmingham, in the County
of Warwick, and 322, High Holborn, in the County of Middlesex, Civil
Engineer, do hereby declare the nature of this invention to be as follows:-
It is well known that pure aluminium possesses very great qualities which
have not hitherto been utilized because it is not sufficiently resistant. Various
alloys of it with copper, nickel, zinc and the like have been made which are
much more resistant than pure aluminium but the utilization of these alloys
is limited because they deteriorate under the action of atmospheric agencies
or other like causes which do not affect pure aluminium.
This invention consists in making a compound or cased metal composed
internally of a resistant aluminium alloy coated with pure aluminium enabling
the two qualities of resistance and unchangeability to be combined. In order
to obtain this compound or cased metal the following method is adopted: ―
1. For sheets, by taking a sheet of resistant alluminium alloy or a slab of
such alloy and brazing, soldering or applying by means of rolling when either
hot or cold, on said sheet or slab another sheet of pure aluminium. The com-
pound sheet thus obtained may be reduced to any desired thickness by rolling.
2. For wire, by preparing a round core or wire of resistant aluminium alloy
and coating or covering it with a tube or casing of pure aluminium which is
then rolled, pulled or drawn.
3. For tubes, by preparing a tube of resistant aluminium alloy and an external
tube of pure aluminium for the external casing and a tube of pure aluminium
for the internal casing, the whole being then drawn at a suitable temperature.
In the case of tubes a blank of the compound or cased metal may be prepared
and then formed into a tube by hammering.
4. For any manufactured articles, by using sheets, wires or tubes of the com-
pound or cased metal formed of a resistant metallic aluminium alloy coated or
covered with pure aluminium.
The resistant alloys of aluminium may also be coated with pure aluminium
by any other suitable means such as electro-deposition or by means of a press
or the like.
The proportions of pure aluminium and of the alloy are arranged according
to the uses to which the articles are to be put either one or both faces being
coated with pure aluminium as may be required.
Tatad this 20th day of Naxambor 1898

page_text: An improved Compound or cased Metal.
A communication by GEORGES PARENT, of 52, Rue St. Georges, Paris, in the
Republic of France, Engineer.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for Foreign
Patent Solicitors, 6, Lord Street, Liverpool, and 6, Bank Street, Manchester,
both in the County of Lancaster, 118, New Street, Birmingham, in the County
of Warwick, and 322, High Holborn, in the County of Middlesex, Civil
Engineer, 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:-
It is well known that pure aluminium possesses very great qualities which
have not hitherto been utilized because it is not sufficiently resistant. Various
alloys of it with copper, nickel, zinc and the like have been made which are
much more resistant than pure aluminium but the utilization of these alloys
is limited because they deteriorate under the action of atmospheric agencies
or other like causes which do not affect pure aluminium.
This invention consists in making a compound or cased metal composed
internally of a resistant aluminium alloy coated with pure aluminium enabling
the two qualities of resistance and unchangeability to be combined. In order
to obtain this compound or cased metal the following method is adopted: -
1. For sheets, by taking a sheet of resistant aluminium alloy or a slab of
such alloy and brazing, soldering or applying by means of rolling when either
hot or cold, on said sheet or slab another sheet of pure aluminium. The com-
pound sheet thus obtained may be reduced to any desired thickness by rolling.
2. For wire, by preparing a round core or wire of resistant aluminium alloy
and coating or covering it with a tube or casing of pure aluminium which is
then rolled, pulled or drawn.
3. For tubes, by preparing a tube of resistant aluminium alloy and an external
tube of pure aluminium for the external casing and a tube of pure aluminium
for the internal casing, the whole being then drawn at a suitable temperature.
In the case of tubes a blank of the compound or cased metal may be prepared
and then formed into a tube by hammering.
4. For any manufactured articles, by using sheets, wires or tubes of the com-
pound or cased metal formed of a resistant metallic aluminium alloy coated or
covered with pure aluminium.
The resistant alloys of aluminium may also be coated with pure aluminium
by any other suitable means such as clectro-deposition or by means of a press
or the like.
The proportions of pure aluminium and of the alloy are arranged according
to the uses to which the articles are to be put, either one or both faces being
coated with pure aluminium as may be required.
In carrying the invention into effect I employ preferably commericially pure
aluminium, that is to say aluminium which may still contain various impurities
from which in practice it cannot be freed, but I also may form the casing of
aluminium slightly alloyed, that is to say in such a condition that it preserves
all its properties of being unchanged by atmospheric agencies.
Having now particularly described and ascertain the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to me
by my foreign correspondent, I declare that what I claim is:-
1. The improved manufacture of aluminium sheets, wire, tubes and the like

page_text: consisting in coating or casing an aluminium alloy with pure aluminium, by
rolling, electro-deposition, pressing or any other suitable means, substantially
as and for the purpose hereinbefore set forth.
2. As a new article of manufacture a compound or cased metal consisting of a
core or foundation of aluminium alloy having a coating or casing of pure
aluminium, substantially as herein before described.
WM. P. THOMPSON & Co.,
Agents.