Improvements in the Treatment of Zinc Produced by Electrolysis.
Year: 1893

page_text: Date of Application, 16th Sept., 1893
Complete Specification Left, 18th June, 1894-Accepted, 15th Sept., 1894
PROVISIONAL SPECIFICATION.
Improvements in the Treatment of Zinc Produced by Electrolysis.
We, WILLIAM WRIGHT, of Park Hill, Bettws-y-Coed, North Wales, Gentleman,
and JOHN BLOMFIELD HAMOND, of Sparthfield, Bromley, Kent, Engineer, do
hereby declare the nature of this invention to be as follows:-
When producing zinc by means of electrolysis, we find the deposit when taken
from the vats is frequently of a porous and spongy nature, which can only be
reduced into a molten state with considerable loss through the formation of oxide;
but if this deposit is subjected to pressure to press it into thin sheets it then
becomes solidified and can be melted without difficulty.
We therefore take the deposit immediately it is removed from the vats and after
washing well in water cause it to pass through a pair of rolls or other suitable
means of pressure whereby most of the moisture is expelled and the zinc
compressed into solid thin sheets: it can then be melted into plates or other form
as required.
Dated this 16th day of September 1893.
FREDERIC PRINCE,
Agent for Applicants.
COMPLETE SPECIFICATION.
Improvements in the Treatment of Zinc Produced by Electrolysis.
We, WILLIAM WRIGHT, of Park Hill, Bettws-y-Coed, North Wales, Gentleman,
and JOHN BLOMFIELD HAMOND, of Sparthfield, Bromley, Kent, Engineer, 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:—
When producing zinc by means of electrolysis we find the deposit when taken
from the vats is frequently of a porous and spongy nature, which can only be
reduced into a molten state with considerable loss through the formation of oxide,
caused by the absorbed moisture; but if this deposit is subjected to pressure to
squeeze out the moisture and press the material into thin sheets it then becomes
solidified and can be melted in the usual way without difficulty or loss.
In carrying this invention into practical effect, we take the deposit immediately
it is removed from the vats, and after washing well in water cause it to pass between
a pair of rolls to compress the zinc into a thin sheet, and expel the moisture. The
zinc after this treatment can be melted in the usual way with but slight loss, and
afterwards rolled or otherwise dealt with as required for commercial purposes.
We are aware that it has been proposed to press a quantity of zinc deposit into a
block, but we have found this does not give the same results as is obtained by
rolling the zine into sheets before melting.

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed: we declare that what we
claim is :-
--
The method of treating zinc deposit substantially as and for the purposes
Having now particularly described and ascertained the nature of this inven
tion and in what manner the same is to be performed: we declare that what we
claim is :-
The method of treating zinc deposit substantially as and for the purposes
hereinbefore described.
Dated this 18th day of June 1894.
FREDERIC PRINCE,
37, Cursitor Street, Chancery Lane, London, Agent for Applicants.