ROVED ALLOY FOR MERCURIAL GILDING
Year: 1885

page_text: We GEORGE LOWE of Vittoria Street Birmingham in the County of Warwick
Art Metal Worker and HYMEN LEVETUS of the same place Jeweller do hereby
declare the nature of the said invention for AN IMPROVED ALLOY FOR MERCURIAL
GILDING to be as follows:-
This invention consists in the manufacture of an improved alloy or amalgam
suitable for the subsequent process of mercurial or fire Gilding. With this view
we take the following metals in or about these specified proportions.
Copper
Cadmium
Spelter
500 parts.
100
"
-
100
"
Aluminium
Corrosive Sublimate
-
"
1
300 "
The process of melting and combining the metals is thus.
First melt the Copper without flux in a crucible in a furnice.
Add the cadmium in particles then the aluminium and melt all to a running
heat now add the spelter and well stir the whole with a beech rod.
Then put in the corrosive sublimate and pour out the whole mass when at a
good running heat into an ingot.
The product will be a metal of good colour with a greater affinity for mercury
than any other metal at present in use and therefore better adapted to receive the
amalgam of gold and mercury used in the process commonly known as mercurial
or Fire Gilding.

page_text: COMPLETE SPECIFICATION.
An Improved Alloy for Mercurial Gilding.
We GEORGE LOWE of Vittoria Street Birmingham in the County of Warwick
Art Metal worker and HYMEN LEVETUS of the same place Jeweller do hereby
declare the nature of our said invention for AN IMPROVED ALLOY FOR MERCURIAL
GILDING and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:
This invention consists in the manufacture of an Improved Alloy or amalgum
suitable for the subsequent process of mercurial or fire gilding. With this view
we take the following metals in or about these specified proportions.
Copper
Cadmium
Spelter
Aluminium
Corrosive sublimate
-
500 parts.
100 parts.
-
100 parts.
1 part.
300 parts.
Or when we require to vary the colour of the alloy we vary the proportions of
the Cadmium and Copper.
The process of melting and combining the metals is thus.
First melt the copper without flux in a crucible in a furnace, add the cadmium
in particles, then add the aluminium and melt all to a running heat now add the
spelter and well stir the whole with a beech rod.
Then put in the corrosive sublimate and pour out the whole mass when at a
good running heat into an ingot.
The product will be a metal of good colour with a greater affinity for mercury
than any other metal at present in use and therefore better adapted to receive the
amalgum of gold and mercury used in the process commonly known as mercurial
or fire gilding.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed, We declare that what
we claim is
The manufacture of an improved alloy or amalgum suitable for the subsequent
process of mercurial or fire gilding which alloy or amalgum is composed of the
metals named and in or about the proportions specified.
Dated this 29th day of October 1885.
PAYNE & TALBOT,
Arcade Chambers,
Corporation Street, Birmingham,
Agents for the Applicants.
°