Improvements in Apparatus for the Electro-deposition of One Metal on Another.
Year: 1897

page_text: Date of Application, 11th Oct., 1897
Complete Specification Left, 11th July, 1898-Accepted, 11th Oct., 1898
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for the Electro-deposition of One Metal
on Another.
I, JAMES EDWARD BRYANT, of No. 1A, Park Road, Redditch, in the County of
Worcester, do hereby declare the nature of this invention to be as follows:-
For the purpose of depositing one metal on another by means of a current of
electricity I employ a hollow rotating cylinder or barrel, either hermetically
sealed to contain the electrolyte, the articles to be coated the anodes and cathode,
or perforated and placed in a separate vessel which contains all or any of these.
That whereas usually in apparatus of this kind the anodes are placed either
at the ends of the interior of the cylindrical vessel, or on the sides of the same, I
employ a cylinder, polygonal prism, or a longitudinal section of either of these,
& made of the same kind of metal as that to be deposited, and support it axially
through the whole or portion of the length of the cylindrical vessel or barrel, or
suspend it to a metallic rod which itself forms the axis of the barrel. By a simple
mechanical contrivance the anode can be raised or lowered, and thus brought
nearer to the articles to be coated, or moved farther away as the exigencies of the
work may require. Where it is necessary to take precautions to prevent contact
between the articles to be coated and the anode, a cylindrical perforated screen of
some non-conducting material, or an insulated perforated metallic screen is made
to surround the anode.
The cathode connection is constructed of strips or bars of metal placed parallel
along the inner sides of the vessel or barrel, and are all connected to a metallic
band or ring at one end of the vessel.
The anode is connected by means of a metallic band or wire with the positive
pole of the dynamo or other source of electricity, and the cathode to the negative
pole of the same.
11
COMPLETE SPECIFICATION.
Improvements in Apparatus for the Electro-deposition of One Metal
on Another.
I, JAMES EDWARD BRYANT, of No. 1a, Park Road, Redditch, in the County of
Worcester, Schoolmaster, do hereby declare the nature of this invention and in
Price 8di

page_text: what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
For the purpose of depositing a coating of one metal upon another, by means of
a current of electricity, derived either from a galvanic battery, dynamo electric
machine or other source of eléctricity, 1 employ a rotating cylinder or barrel, of
wood or other material, Fig. i & II either hermetically sealed to contain the
electrolyte, anodes, and the articles to be coated or perforated, and placed in
separate vessel which may contain the electrolyte, a, Figs. I II.
That whereas usually in apparatus for this purpose the anodes are placed either
at the inner ends of the rotating vessel, or affixed to the sides thereof, thus
necessitating screens to prevent contact between the anodes and the articles I
employ a cylinder, polygonal prism, or a longitudinal section of either of these,
or a simple plate of the metal, of the same kind as that to be deposited (h) and
suspend it to a rod of copper, brass or other conducting substance (Fig. II b)
which passes through a tube of some insulating material (Fig. II c) and extends
beyond the axis of the barrel, and is furnished near its end with a hole and bind-
ing screw Figs. I & II d, to receive the conducting wire from the positive pole
of the source of electricity.
The insulating tube c, passes through a metal tube, e, which forms the axis
at that end, upon which the barrel turns, and which, together with the rod sup-
porting the anode, is firmly clamped to the stand upon which the barrel is sup-
ported.
The axis, e, works in a stuffing box, f, and is furnished with a handle
which the position of the anode can be altered if necessary.
9, by
The anode his furnished with metal rods i, i, which pass through holes in the
rod b, and are furnished with set screws, x, by which the anode can be raised
or lowered in order to vary the distance between it and the articles to be coated,
according to the nature of the work, and the character of the current of electricity
which is employed.
The stuffing box f is secured firmly to the end of the barrel and revolves with
it around the axis, e.
The rod b supporting the anode may, instead of passing through the axis of the
barrel, and being bent at right angles or otherwise, may itself form the axis upon
which the barrel turns.
The end, k, of the barrel is removeable and is secured watertight to the barrel,
with screws 1, 1, or other fastening.
The material forming the "stuffing" is held firmly in position by means of a
screw, cap or plug m, through which the axis, e, and the conducting rod pass.
Another conducting rod, n, passes through a similar arrangement at the other
end of the barrel, and is connected with a copper, or other metal plate, o, to which
are fastened strips of copper, P, which are affixed around the interior surface of
the barrel at intervals and which with the rod, », conduct the electric current
to the articles which are to be coated.
.
A friction wheel, q, is attached to the rod, n, upon which presses a brush, s, or
wire from the negative end of the source of the electric current.
To the axis at this end of the barrel a driving pulley r, by which the barrel is
turned upon its bearings, t, t.
Fig. III shows a front view of the metal plate o, and the conducting strips, p, p.
The barrel is furnished with a watertight door u, by which the articles to be
coated may be introduced or withdrawn."
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is:
1st. I claim as novel the anode suspended to a conductor immediately over the
work, or articles to be coated.

page_text: 2. I claim as novel the method of moving the anode nearer to or farther from
the articles to be coated.
3. I claim as novel the fixed conductor (b, Fig. II) in apparatus where a revolv-
ing barrel is used for coating articles by a current of electricity.
4. I claim, as novel the metal conducting plate, o, with its radiating conductors.
Dated this 9th day of July 1898.
JAMES EDWARD BRYANT.