The Manufacture of a New Metallic Body.
Year: 1899

page_text: Date of Application, 21st July, 1899
Complete Specification Left, 21st Apr., 1900-Accepted, 7th July, 1900
PROVISIONAL SPECIFICATION.
The Manufacture of a New Metallic Body.
I, LÉON MARIUS OCTAVE DESSAIGNE, of 41, Rue Taitbout, Paris, in the
Republic of France, Metallurgist, do hereby declare the nature of this inven-
tion to be as follows:-
According to this invention a new metallic body is produced composed of three
metals in the form of leaf viz-copper or aluminium bronze, silver and platinum,
or German silver (15% nickel 85% copper) silver and platinum or steel, silver
and platinum brought into such intimate contact that they partially lose their
specific properties and combine together giving rise to novel properties peculiar
to this new body.
This new metal is very well adapted to the manufacture of capsules, pans and
the like to be utilized in a large number of industries, and also in chemical
laboratories for the manufacture of acids in general.
Up to the present time such vessels have been made of platinum and have been
very costly not only because of the cost of the substance employed but also
because of their rapidly wearing out owing to the lightness with which they were
made to reduce the initial cost.
This new metal removes these defects; on account of its relatively small cost,
the walls of the vessels may be made of sufficient thickness to prevent them
from warping and to enable them to resist much higher pressures.
Attempts have been made to make a kind of platinum copper plate, but the
co-efficient of expansion of these two metals is so different that when raised to
a slightly elevated temperature blow holes are formed which prevent its use.
These defects are not produced with the new metal which is manufactured in
the following manner:
I take a thin plate either of refined copper, or of aluminium bronze or of
German silver or steel of best quality, heat it in a furnace and submit it to the
action of a steam hammer in order to reduce it to a leaf free from blow holes.
This leaf is then passed under a clamp and strongly scraped by hand upon
that side which is to receive the silver leaf, it is then passed to the rolling mill
in order to planish it, a moderately thick leaf of silver is then placed upon the
seraped side and the whole heated and placed in an hydraulic press.
After this first result has been obtained I apply by the same process two leaves
of platinum upon the silvered side, the whole is then heated a third time and
the three metals thus united placed a second time in the hydraulic press.
:
This last operation ensures complete adherence of the leaves to each other;
the sheet is then rolled and brought to the required thickness for use in the
manufacture of vessels by spinning, stamping, hammering or otherwise.
Dated this 21st day of July 1890
CARPMAEL & Co.,
Agents for the Applicant.

page_text: I, LÉON MARIUS OCTAVE DESSAIGNE, of 41, Rue Taitbout, Paris, in the
Republic of France, Metallurgist, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed to be particularly described
and ascertained in and by the following statement:―
According to this invention a new metallic body is produced composed of three
metals in the form of leaf viz: copper or aluminium bronze, silver and platinum,
or German silver (15% nickel 85% copper) silver and platinum or steel, silver
and platinum brought into such intimate contact that they partially lose their
specific properties and combine together giving rise to novel properties peculiar
to this new body.
This new metal is very well adapted to the manufacture of capsules, pans and
the like to be utilized in a large number of industries, and also in chemical
laboratories for the manufacture of acids in general.
Up to the present time such vessels have been made of platinum and have been
very costly not only because of the cost of the substance employed but also
because of their rapidly wearing out owing to the lightness with which they were
made to reduce the initial cost.
This new metal removes these defects; on account of its relatively small cost,
the walls of the vessels may be made of sufficient thickness to prevent them
from warping and to enable them to resist much higher pressures.
Attempts have been made to make a kind of platinum copper plate, but the
co-efficient of expansion of these two metals is so different that when raised to
a slightly elevated temperature blow holes are formed which prevent its use.
These defects are not produced with the new metal which is manufactured in
the following manner :-
I take a thin plate either of refined copper, or of aluminium bronze or of
German silver or of steel of best quality, heat it in a furnace to a temperature just
below its melting point and submit it to the action of a steam hammer in order
to reduce it to a leaf free from blow holes.
This leaf is then passed under a clamp and strongly scraped by hand upon
that side which is to receive the silver leaf, it is then passed to the rolling mill
in order to planish it, a moderately thick leaf of silver is then placed upon the
scraped side and the whole heated to a temperature just below the melting point
of the more fusible metal and placed in an hydraulic press, a pressure of say 150
to 180 tons per square inch being employed.
After this first result has been obtained I apply by the same process two leaves
of platinum upon the silvered side, the whole is then heated a third time as before
and the three metals thus united placed a second time in the hydraulic press.
This last operation ensures complete adherence of the leaves to each other;
the sheet is then rolled and brought to the required thickness for use in the
manufacture of vessels by spinning, stamping, hammering or otherwise.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
1. The formation of new metallic bodies by the union of leaves of copper,

page_text: aluminium bronze, German silver or steel with leaves of silver and platinum
substantially as described.
2. The new metallic bodies substantially as described
aluminium bronze, German silver or steel with leaves of silver and platinum
substantially as described.
2. The new metallic bodies substantially as described
Dated this lat
+1 1000
CARPMAEL & Co.,
Agents for the Applicant.