A NEW OR IMPROVED PROCESS FOR THE PRODUCTION OF MAGNESIUM, ALUMINIUM, AND OTHER METALS OF THE ALKALINE EARTHS
Year: 1882

page_text: LETTERS PATENT to Lorentz Albert Groth K.G.V Civil Engineer and Managing
Director of The Universal Inventors and Patentees Financial Company
Limited 30 Finsbury Pavement London EC for an Invention of "A NEW OR
IMPROVED PROCESS FOR THE PRODUCTION OF MAGNESIUM, ALUMINIUM, AND
OTHER METALS OF THE ALKALINE EARTHS "
Communicated to him from
abroad by Richard Gratzer of Hanover in the Empire of Germany
PROVISIONAL SPECIFICATION left by the said Lorentz Albert Groth at the
Office of the Commissioners of Patents on the 20th November 1882.
LORENTZ ALBERT GROTH. K.G.V. Civil Engineer and Managing Director of the
Universal Inventors and Patentees Financial Company Limited, 30 Finsbury
Pavement London E.C, "A NEW OR IMPROVED PROCESS FOR THE PRODUCTION
OF MAGNESIUM, ALUMINIUM, AND OTHER METALS OF THE ALKALINE EARTHS
A communication to me from abroad by Richard Gratzel, of Hanover, in the Empire
of Germany.
"
This invention consists in the electrotypical decomposition of the Chloride or
Fluoride of Magnesium, Aluminium and other metals of the Alkaline earths; by
means of Siemens. Gramme or other dynamo electrical machines and comprises.
1. The simultaneous employment and conduction of reducing gases, such as
lighting gas for instance
2. The employment of crucibles or melting vessels of other form in which the
Chlorides or Fluorides are melted and electrotypically decomposed such crucibles
or melting vessels being made of metal such as for instance iron for Magnesium,
copper or iron for Aluminium and so forth
3. In the case of melting vessels made of Graphite, fireclay or porcelain the use
of tube or other suitably shaped projections composed of that metal which is found
most suitable for the electrotypical deposition of that metal to be thrown down.
The melting vessel is provided with a cover through which the positive carbon
electrode is introduced.
The metal vessel containing the Chloride or Fluoride to be melted is connected
with the negative pole of the dynamo electric Machine, and serves directly as the
negative electrode: or in case Graphite, Fireclay or Porcelain is employed for the
melting vessel the metallic projections serve as negative electrodes.
The reducing gas to be employed can best be introduced and conducted through
the closing lid from above; the introduction of the gas may however be effected at
the side of the melting vessel if preferred.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Lorentz Albert Groth in the Great Seal Patent Office on the
19th May 1883.
LORENTZ ALBERT GROTH K.G.V. Civil Engineer and Managing Director of The
Universal Inventors and Patentees Financial Company Limited 30 Finsbury
Pavement London E.C. "A NEW OR IMPROVED PROCESS FOR THE PRODUCTION
OF MAGNESIUM, ALUMINIUM, AND OTHER METALS OF THE ALKALINE EARTHS
A communication to me from abroad by Richard Gratzel of Hanover in the Empire
of Germany
"
This invention consists in the electrolytical decomposition of the chloride or
Fluoride of Magnesium, Aluminium, and other metals of the alkaline earths by
means of Siemens, Gramme, or other dynamo electrical machines and comprises
1. The simultaneous employment and conduction of reducing gases, such as
lighting gas for instance
2. The employment of crucibles or melting vessels of suitable form in which the
chlorides or Fluorides are melted and electrolytically decomposed such crucibles or
melting vessels being made of metal such as for instance iron for magnesium
copper or iron for Aluminium and so forth.
3 In the case of melting vessels made of Graphite, fireclay or porcelain, the use
of tube or other suitably shaped projections composed of that metal which is found
most suitable for the electrolytical deposition of the metal to be thrown down.
The melting vessel is provided with a cover through which the positive carbon
electrode is introduced.
The metal vessel containing the Chloride or Fluoride to be melted is connected
with the negative pole of the dynamo electric machine and serves directly as the
negative electrode; or in case Graphite, Fireclay or Porcelain is-employed for the
melting vessel the metallic projections serve as negative electrodes
The reducing gas to be employed can best be introduced and conducted through
the closing lid from above; the introduction of the gas may however be effected at
the side of the melting vessel if preferred
Having now described the nature of the said invention and the manner in which
the same is to or may be carried into effect I would have it understood that what
I claim as the invention to be secured by the within in part recited letters
patent is :-
First. The simultaneous employment of reducing gases in electrolytical decom-
positions and reductions as hereinbefore described.
Second. The employment of metallic chambers of crucible or other form
simultaneously as melting chambers and negative electrodes as herein-
before described.
Third. The employment of suitably formed metallic projections in graphite,
fireclay or porcelain crucibles or other melting chambers as negative
electrodes as herein before described
In witness whereof I the said Lorentz Albert Groth have hereunto set my
hand and seal this eighteenth day of May in the year of Our Lord, one
thousand eight hundred and eighty three.
DERE GROTI Gal