A New Metallic Alloy suitable for Trinkets, and other Objects.
Year: 1888

page_text: Date of Application, 3rd Oct., 1888
Complete Specification Left; 6th Nov., 1888
Complete Specification Accepted, 7th Dec., 1888
A New Metallic Alloy suitable for
Trinkets, and other Objects.
We, PAUL LAZARD, Manufacturing Jeweller, and LOUIS EMMANUEL DANÍEL,
Jeweller, both of 1 Boulevard St. Denis, Paris, France, do hereby declare the nature
of this invention to be as follows :-
The object of this invention is the manufacture of a new metallic alloy especially
adapted for the manufacture of articles of jewellery and trinkets such for example as
chains, rings, ear-rings, bracelets and studs.
This alloy is in color the same as gold in its various alloys; it is very durable,
possesses great malleability and ductility and is capable of receiving a very permanent
and brilliant polish. It is besides very cheap.
The new alloy is composed of pure copper, pure gold and aluminium in the
proportions of 978 parts of copper, 2 of gold and 20 of aluminium or approximately
So. The copper and gold are first put together into an earthen or other crucible and
melted. When they are melted the aluminium is added. The mixture is kept in
the molten state for about half an hour (for 1 kilogramme for example). About
50 grammes of borax are introduced into the alloy as a flux and the alloy is then
run into an ingot.
The alloy thus obtained can be made into sheets wires or other forms suitable for
the use of jewellers or others.
The color of the alloy can be varied by varying the proportions of the three
ingredients. To redden it there should be less gold and less aluminium; to make it
more yellow there should be less gold; and to make it more green there should be
less gold and more aluminium.
Dated this 2nd dow of October 1888.
J. C. MEWBURN,
169, Fleet Street, London,
Agent.

page_text: COMPLETE SPECIFICATION..
A New Metallic Alloy suitable for the Manufacture of Jewellery,
Trinkets, and other Objects.
We PAUL LAZARD, Manufacturing Jeweller and LOUIS EMMANUEL DANIEL,
Jeweller, both of 1 Boulevard St. Denis, Paris, France, 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 :—
The object of this invention is the manufacture of a new metallic alloy especially
adapted for making articles of jewellery, and trinkets, such for example as chains,
rings, ear-rings, bracelets, and studs.
The new alloy is in color the same as gold in its various alloys; it is very durable,
possesses great malleability and ductility, and is capable of receiving a very permanent
and brilliant polish. It is besides very cheap.
The new alloy is composed of pure copper, pure gold, and aluminium in the
proportions of 978 parts of copper, 2 of gold, and 20 of aluminium; or approxi
mately so. The copper and gold are first put together into an earthen or other
crucible and melted. When they are melted the aluminium is added. The mixture
is kept in the molten state for about half an hour (for 1 kilogrammine for example):
About 50 grammes of borax are introduced into the alloy as a flux, and the alloy is
then run into an ingot.
The alloy thus obtained can be made into sheets, wires, or other forms suitable for
the use of jewellers or others.
The color of the alloy can ho varied by varying the proportions of the three
ingredients. To redden it there should be less gold and less aluminium; to make it
more yellow there should be less gold, and to make it inore green there should be less
gold and more aluminium. Silver can be used instead of the aluminium.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is
The new metallic alloy hereinbefore described, suitable for the manufacture of
jewellery, trinkets and other objects.
Dated this 6th day of November 1888.