Improvements relating to the Deposition of Metals and Compounds.
Year: 1893

page_text: Date of Application, 14th Nov.,
1893
Complete Specification Left, 26th June, 1894-Accepted, 29th Sept., 1894
TRUVIDIUNAL SPECIFICATION.
Improvements relating to the Deposition of Metals and
Compounds.
We, SHERARD OSBORN COWPER-COLES, of 16 Adam Street, Manchester
Square, Engineer and Sir BALDWIN WAKE WALKER, Bart. Captain R.N.
28 Bramham Gardens, both in the County of London, do hereby declare the
nature of this invention to be as follows :-
This invention relates to the deposition of metals and their compounds either
singly or two or more together and may be used for manufacturing articles, or for
coating articles otherwise made.
In carrying the said invention into effect we use an electrolyte to which is added
a suitable substance or compound in a fine state of division for example a metal or
metals or compound or compounds thereof with other suitable substance or
substances finely divided. Said finely divided metal, substance, or compound is
kept in suspension in the electrolyte by the free circulation of the latter or by
other means. The deposition is effected by passing a current of electricity through
the electrolyte in the usual manner whereupon in addition to the deposit due to
the decomposition of the electrolyte there is deposited a portion of the aforesaid
metal substance or compound held in suspension.
Dated this 14th day of November 1893.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements relating to the Deposition of Metals and
Compounds.
We SHERARD OSBORN COWPER-COLES Engineer of 16 Adam Street
Manchester Square and Sir BALDWIN WAKE WALKER Bart. Captain R.N. of
28 Bramham Gardens both in the County of Middlesex 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 :-
This invention relates to the electrical deposition of metals or compounds and
more especially to the electrical deposition of zinc and zinc compounds (such as zinc
oxides for example) or either of them and may be used for manufacturing articles
therefrom or for coating therewith articles otherwise made.
In carrying the said invention into effect we use an electrolyte to which is
added the metal or compound such as zinc or zinc compound in a fine state of
division which metal or compound such as zinc or zinc compound so added is kept
in suspension or dispersion in the electrolyte by any suitable or convenient means
such for instance as by the free circulation of the electrolyte. The deposition is
effected by passing a current of electricity through the electrolyte in the usual
manner whereupon in addition to the deposit due to the decomposition of the
electrolyte there is deposited a portion of the divided metal or compound such as
zinc or zinc compound held in suspension or dispersion in the electrolyte as
aforesaid, or it may be effected by a rocking frame or by a mechanical stirrer or
otherwise such for instance as by passing jets of live steam into the electrolyte.
D

page_text: Or the finely divided metal or compound such as zinc or zinc compound may be
contained in a perforated or reticulated basket or container and be dispersed
therefrom into the electrolyte.
The divided metal or compound such as zinc or zinc compound may be distributed
into the electrolyte and kept suspended or dispersed therein by supplying it into
reticulated or perforated anodes and moving these anodes in such a way that the
divided metal or compound such as zinc or zinc compound passes through the
perforations or between the reticulations into the electrolyte.
Figure 1 shews in elevation, and Figure 2 in plan part of an anode and its
suspending bar L which anode is composed of a wire gauze container L³ supported
on a framework and so arranged as to leave within it a space m into which the finely
divided metal or compound such as zinc or ziuc compound is placed so that when
the anode is moved the said divided matter will be distributed through the meshes
or perforations into the electrolyte.
The movement of the anodes can be effected in any suitable way for example as
shewn in Figures 3 and 4, Figure 3 being a part vertical section and Figure 4 a
part plan with intermediate portions broken away. In this device two bars R R*
are arranged one at each side of the tank and are supported by rollers S which
move along the inclined surfaces T made adjustable by a screw t and by being
centred at t².
The bars R R support the anode bars and can be reciprocated backwards and
forwards by levers U which engage between antifriction rollers r carried by the
said bars and extend from a shaft V which can be partially rotated by a lever V*
or by other convenient means. By this means the anodes have longitudinal and
vertical reciprocating motions imparted to them which have the effect of keeping
the metallic dust well in suspension. The cathodes can be similarly moved instead
of or in addition to the anodes.
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 :-
In effecting the electro-deposition of metals or compounds such as zinc and zinc
compounds or either of them the addition to the electrolyte of the metal or
compound such as zinc or zinc compound (or both) in a fine state of division and
kept suspended or dispersed in the electrolyte substantially as herein before
described.
Dated this 26th day of June 1894.
JOHNSONS & WILLCOX.