Improvements in the Manufacture of Compound Metal Sheets or Plates for Use in Making Silvered Copper Utensils and other Articles.
Year: 1895

page_text: Date of Application 17th June 1895
Complete Specification Left, 17th Apr., 1896-Accepted, 6th June, 1896
Complete Specification Left, 17th Apr., 1896-Accepted, 6th June, 1896
PROVISIONAL DI BUIFICATION.
[Communicated from abroad by EDOUARD MARTIN, of 46 Rue de Dunkerque
Paris, France, Operative.]
Improvements in the Manufacture of Compound Metal Sheets or
Plates for Use in Making Silvered Copper Utensils and other
Articles.
I, OLIVER IMRAY, of No. 28, Southampton Buildings, Chancery Lane, in the
County of London, Chartered Patent Agent, do hereby declare the nature of this
invention to be as follows:-
This invention relates to the manufacture of utensils and other articles from
plates of copper covered with silver prepared in the following manner.
Pure copper or in some cases a special alloy consisting of 98 parts copper,
1-9 parts tin and 0.1 part nickel is cast in ingots which may have the following
dimensions, breadth 160 m, thickness 90 /m height 450m. The ingot is slightly
hammered while hot and then its surfaces are planed and coated with a special
preparation of silver being a double nitrate of silver and mercury. Then a plate of
silver 160 m wide 450 mm long and of thickness proportioned to that of the silver
required on the copper, is placed on the ingot under a press and its ends are forced
down so as to prevent its sliding. The whole is then enclosed in a sheet of copper
about 4 or 5 tenths of a millimetre thick prepared in such a way as to prevent it
from adhering to the silver, and secured by binding with thin copper hoop.
The ingot thus prepared is heated to 700° to 800° C. then rapidly rolled till it
becomes a bar 180 / broad and 5 or 6 metres long. This bar is cut into lengths
which are reheated and cross rolled to form sheets about 1 metre wide and 2 metres
long. Utensils and other articles are made from these sheets, in which the silver
is thoroughly united to the copper. Instead of pure silver an alloy of silver and
aluminium may be used.
Dated this 17th day of June 1895.
.
ABEL & IMRAY,
Agents for the Applicant.
Improvements in the Manufacture of Compound Metal Sheets or
Plates for Use in Making Silvered Copper Utensils and other
Articles.
I, OLIVER IMRAY, of No. 28 Southampton Buildings, Chancery Lane, in the
County of London, Chartered Patent Agent, 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 :-
This invention relates to the manufacture of utensils and other articles from
plates of copper covered with silver prepared in the following manner.
Pure copper, or in some cases, a special alloy consisting of 98 parts of copper
1-9 parts of tin and 0.1 part of nickel, is cast in ingots which may have the
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following dimensions, breadth 160 mm thickness 90 m, height 450 m. The
ingot is slightly hammered while hot and. then its surfaces are planed and coated
with a special preparation of silver, being a double nitrate of silver and mercury.
Then a plate of silver 160 /m wide, 450 m long and of thickness proportioned to
that of the silver required on the copper, is placed on the ingot under a press and
its ends are forced down so as to prevent its sliding. The whole is then enclosed
in a sheet of copper about 4 or 5 tenths of a millimetre thick prepared in such a
way as to prevent it from adhering to the silver, and secured by binding with thin
copper hoop.
The ingot thus prepared is heated to 700° to 800° C., then rapidly rolled till it
becomes a bar 180 m broad and 5 or 6 metres long. This bar is cut into lengths
which are reheated and cross rolled to form sheets about 1 metre wide and 2 metres
long. Utensils and other articles are made from these sheets, in which the silver is
thoroughly united to the copper.
Instead of pure silver, an alloy of silver and aluminium may be used.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
The herein described manufacture of compound metal sheets or plates for use in
making silvered copper utensils and other articles.
Dated this 17th day of April 1896.
ABEL & IMRAY,
Agents for the Applicant.