Improvements in Apparatus for Depositing Copper on Printing Rollers and the like.
Year: 1896

page_text: Date of Application, 21st Apr., 1896
Complete Specification Left, 20th Jan., 1897-Accepted, 20th Mar., 1897
PROVISIONAL SPECIFICATION.
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Depositing Copper on Printing
Rollers and the like.
We, HUGH WYLIE, of Cordale and Dalquburn Works, Renton, in the County
of Dumbarton, North Britain, Turkey-red Dyer and Printer, aud JAMES GRANT,
of Cordale Works, aforesaid, Electrician, do hereby declare the nature of this
invention to be as follows, that is to say :-
This invention has for its object the depositing of copper on printing rollers and
the like in a more uniform and generally satisfactory inanner than by ordinary
apparatus.
In carrying out the invention an electro-depositing vat or vessel is employed of
a size to receive a number of rollers placed vertically and in a circular series as
seen in horizontal section. A vertical anode of copper is placed centrally; and it
and the rollers are made to rotate. The rollers are suspended from an annular
frame which is fitted so as to be capable of rotating about the vertical axis of the
apparatus. In addition to the rotation of the annular frame each roller is made to
rotate on its own axis, the part supporting it being suitably fitted in the annular
frame, and having on it a pinion.
on it a pinion. The piuions of the several rollers gear with a
spur-toothed ring which may be either stationary or be separately driven. Suitable
gearing is arranged to give rotation to the annular frame and to the part carrying
the central anode, the two parts being by preference driven in opposite direction.
The rollers are, through the annular frame, connected to the cathode conductor of
the dynamo or other source of electricity. The motions of the rollers and anodu
cause regular continuous motions in the liquid of the vat, and thereby equalise the
deposition of copper and insure its solidity.
Dated this Seventeenth day of Ancil 1896
EDMUND HUNT,
Applicants' Agent.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Depositing Copper on Printing
Rollers and the like.
We, HUGH WYLIE, of Cordale and Dalquhurn Works, Renton, in the County
of Dumbarton, North Britain, Turkey-red Dyer and Printer, and JAMES GRANT,
of Cordale Works, aforesaid Electrician, 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, that is to say:
This invention has for its object the depositing of copper on printing rollera and
the like in a more uniform and generally satisfactory manner than by ordinary
annaratus.

page_text: In carrying out the invention an electro-depositing vat or vessel is employed to
receive a number of rollers, suspended, with their axes vertically, from a horizontal
annular frame made to rotate by gearing. A vertical anode of copper is placed
centrally in the frame, and it and the rollers are made to rotate on their own axes
by suitable gearing. The rollers are connected to the cathode conductor of the
source of electricity; and their motions combined with that of the anode, cause
regular continuous motions in the liquid of the vat, and thereby equalise the
deposition of copper and insure its solidity.
And in order that the said invention and the manner of performing the same
may be properly understood we hereunto append two sheets of explanatory
drawings, to be hereinafter referred to, and showing the improved apparatus for
depositing copper on printing rollers and the like.
Figure, 1, on Sheet, 1, of the drawings is a vertical section of the apparatus, and
Figure, 2, on Sheet, 2, is a plan.
Figure, 3, is an elevation of a governor or regulator connected with the
apparatus.
In these drawings the same reference letters and numerals are used to mark
the same or like parts wherever they are repeated.
In carrying out the invention an electro-depositing vat or vessel, A, is employed
of a size to receive a number of rollers, B, placed vertically, and in a circular
serics as seen in horizontal section. A vertical anode of copper, C, is placed
centrally; and it and the rollers, B, are made to rotate. The rollers, B, are
suspended from an annular frame, D, which is fitted so as to be capable of rotating
about the vertical axis of the apparatus, an extension, G1, of the shaft of each
roller, B, passing upwards through the annular frame, D, and having on its upper
end a pinion, H, between a central boss, J, on which and a corresponding boss, K,
on the frame, anti friction balls, L, working in grooves are provided. In addition
to the rotation of the annular frame, D, each roller, B, is made to rotate on its own
axis, the pinion, H, on each shaft, G 1, gearing with a spur-toothed ring, M, which
is part of a frame, N, fixed to the tops of the vat's sides, or which might be driven
separately. The annular frame, D, is, at its periphery, made with teeth, P, which
gear with a worm, Q, on a first-motion shatt, R, carried in bearing brackets, S,
and driven from a steam or other motor. The central anode, C, bas a central
spindle on its upper end fixed to a shaft, C, which extends upwards through the
annular frame, D. and the stationary frame, N, a collar, T, on this upward extension
resting on anti-friction balls, V, held in grooves between it and a piece, V 1, on the
stationary frame, N. The shaft, C5, of the anode, C, bas a pulley, V 2, on it,
which is driven by a rope, V 3, through intermediate pulleys,
pulley, V 5, on the first-motion shaft, R, the direction of rotation of the anode being
preferably opposite to that of the annular frame, D. A central sleeve, W, through
which the shaft, C5, of the anode, C, passes is fixed to the frame, N, by keys, W 1,
and is made at its lower end with a tinuge, W 2, for carrying the annular frame, D,
anti-friction balls, W 3, being interposed between the flange and the frame. The
shaft, C5, of the anode, C, is insulated by a sheath, C6, of non-conducting
material covered by thin metal; and is counected through a contact piece, C1, to
a terminal, C2, from which a wire, C3, leads to the dynamo or other source of
electricity. The rollere, B are through the annular frame, D, and other parts
connected to the cathode conductor, C4, of the dynamo or other source of
electricity. The motions of the rollers, B, and anode, C, cause regular continuous
motions in the liquid of the vat, A, and thereby equalise the deposition of copper
and insure its solidity. The liquid in the vat may be of any suitable kind in use
for depositing copper. The copper deposited on the rollers is on one of them
indicated by the lines, B 1.
4, from a
One of the rollers, B, is shown in vertical section in Figuro, 1. It is held between
flauged castirou end plates, G 2, which are enamelled or coated to prevent deposi-
tion of copper on them, aud which are insulated by rings, G 3, of non-conducting
material, from the cast iron roller, B, which is to have copper deposited on it.

page_text: The end plates, G 2, are secured in the ends of the roller, B, by means of a tubular-
spindle, G4, having at its lower end a nut G 5, up through which is screwed a
screw spindle, G6, fixed to the bottom end plate, G2, this arrangement allowing
of rollers of different lengths, being held by the apparatus. The upper ond of the
tubular spindle, G4, bas fixed in it a short spindle, G 7, which has its upper end
adapted for being fixed in a socket in the bottom end of the shaft. G 1, by mean.
of which the roller is suspended. There is also fixed to the upper end of th
tubular spindle, G 4, an externally screwed sleeve, G 8, on which are screwed a nut.
and jam nut, G9, bearing on a wooden block, H 1, which bears on a disk, H 2,.
between it and the upper end plate, G 2.
Somewhat simpler apparatus may be used where less costly apparatus is desired.
Instead of the rollers, B, being made to revolve round the vessel as well as to.
rotate each on its own axis, the latter motion only may be employed; and the
apparatus may be constructed for acting at the same time on two or more rollers.
If the voltage of the electric current becomes too high or too low, bad effects-
result, for the avoidance of which and the maintenance of a current of suitable
voltage, a governor or regulator, shown in Figure, 3, is provided. The governor
comprises a voltmeter, X, which in addition to the ordinary pointer, X 1, has two
other pointers, X 2, and X 3, (one on each side of the ordinary pointer) connecting-
to terminale, X4, from which wires, X 5, lead to an electro-magnet, X 6, a return
wire, X7, leading from the electro-magnet to another terminal on the voltmeter.
The electro-magnet, X6, is fixed on the main steam pipe, X 8, leading to the
dynamo engine and this main steam pipe is provided with a throttle valve, Y, the
spindle, Y 1, of which has on it a lever, Y 2, weighted at its outer end. A catch
lever, Y 3, centered on a pin in a bracket Y 4, on the steam pipe X 8, holds up the
weighted end of the lover, Y 2, with one notched end, while its other end forms.
the armature of the electro-magnet. When the electric current passing through.
the apparatus is of suitable voltage the main pointer X 1, is between the other
pointers, X 2, and, X3, without being in contact with them, but on a deviation of
the voltage of the current in either direction beyond pre-determined degrees,
taking place, the main pointer comes in contact with a projection, Y 5, on either
pointer, X2, X3, and by completing the circuit to the electro-magnet, the armature
end of the catch lever, Y3, is attracted and frees the notched end from the-
weighted lever, Y 2, which thereupon drops and shuts off steam passing to the
engine driving the dynamo. The weighted lever, Y 2, is re-engaged with the catch.
lever, Y 3, by hand."
All parts of the apparatus are properly insulated where insulation is necessary.
Having now particularly described and ascertained the nature of the said iuven-.
tion and in what manner the same is to be performed, we declare that what we.
olain is :-
In apparatus for depositing copper on printing rollers and the like, the employ--
ment of a central vertical rotating copper anode in a depositing vat, together with.
gearing and parts for suspending in the vat two or more rollers to receive the
copper, and for making the rollers rotate on their own axes, with or without also.
revolving around the central anode, substantially as hereinbefore described.
Dated this Nineteenth day of January 1897
EDMUND HUNT,
Applicants' Agent..