IMPROVEMENTS IN THE MANUFACTURE OF TIN AND TERNE PLATES
Year: 1884

page_text: We, JENKIN DAVID THOMAS, and THOMAS WADE EVANS, Tin Plate Manufac
turers, and JOHN GRAVELL, Tinhouse Superintendent, all of Gilwen Tinplate
Works, Ystalyfera, Swansea, do hereby declare the nature of said invention for
IMPROVEMENTS IN THE MANUFACTURE OF TIN AND TERNE PLATES, to be as
follows:-
Our improvements in the manufacture of tin and terne plates relate to the
process adopted in the finishing chamber to effect a more perfect and economical
coating or tinning of the plates.
Our invention consists of a receptacle or chamber made and adapted for the
fitting therein of a pair or more of rollers, as preferred to work parallel with each
other, and perpendicular to the inside and bottom of the said chamber, with the
usual appliances to regulate the pressure, and suitable driving power. Under the
rolls, guides are fixed, and a cradle to lift the plates to the grip of the rolls, as is
usual in other methods of finishing. This chamber, contains tin or terne metal in
a molten condition, the surface of which we cover with resin to impede oxidation.
In using resin for this purpose, we prevent the staining or discolouring of the
plates when leaving the grip of the rolls, and consequently, the finished sheet does
not require cleaning by the usual method of shudes or other suitable substances, as
it would require when Palm oil or any grease be used for this purpose. The
surface of the metal in the chamber, is kept below the centre or nip of the rolls,
and to insure the metal being kept to the height required, we have in the back or
side of the chamber, as most suitable, a small hole, with an outlet pipe, fixed at the
exact level, at which we wish the surface of the molten metal to remain. At the
mouth of this hole, we fix a small guard, extending two inches below, and two
inches above or about, the surface of the metal, to prevent the melted resin from
running through, as the metal in the chamber becomes higher, in consequence of
the superfluous metal, which remains on the plate after the tinning process in the
pot known as "the Tin pot" being drained off by the action of the rolls. This
outlet receives it, and thus keeps the metal at the required level. At the mouth of
the pipe referred to, we place a suitable vessel to receive this superfluous metal,
which is again replaced in the "Tin pot," and re-worked. On the sides of the
rolls, where out of the metal, running across from end to end, we place a brush,
made from any suitable material, the object of which is of great importance viz: to
prevent the accumulation of the metal on the surface of the rolls by their con-
tinually revolving in it, by doing which they would, without these brushes, be the
means of placing on the plates an excessive coating.

page_text: We, JENKIN DAVID THOMAS, and THOMAS WADE EVANS, Tin-plate Manufac-
turers and JOHN GRAVELL, Tin-house Superintendent, all of Gilwen Tin-plate
Works, Ystalyfera, Swansea, do hereby declare the nature of our invention for
IMPROVEMENTS IN THE MANUFACTURE OF TIN AND TERNE PLATES, and in what
manner the same is to be performed, to be particularly described and ascertained,
in and by the following statement :—
Our improvements in the manufacture of tin and terne plates relate to a process
adopted in a finishing chamber furnished with certain novel appliances for effecting
a more perfect and economical coating or tinning of the plates than heretofore.
Our invention consists in the novel treatment of tin and terne plates in a
finishing chamber furnished with improved appliances-and is performed as
follows; we take a chamber made and adapted for the fitting therein of a pair or
more of rolls, arranged to work parallel with each other, and to the bottom of the
said chamber, with the usual well known appliances to regulate the pressure;
using suitable driving power. Under the rolls, plate guides are fixed, and a cradle
to lift the plates to the grip of the rolls, as is usual in other methods of finishing.
This receptacle or chamber, is supplied with tin or terne metal in a molten con-
dition, the surface of which we cover with resin to impede oxidation. In using
resin for this purpose, we prevent the straining or discolouring of the plates when
leaving the grip of the rolls, and consequently, the finished sheet does not require
cleaning by the usual method of shudes or other suitable substances, as it would
require when palm oil or any grease is used for this purpose. The surface of the
metal in the chamber, is kept below the centre or nip of the rolls, and to insure the
metal being kept to the height required, we have in the back or side of the
chamber, as most suitable, a small hole, with an outlet pipe, fixed at the exact level,
at which we wish the surface of the molten metal to remain. At the mouth of
this hole, we fix a small guard, extending two inches below, and two inches above,
or about the level of the surface of the metal, to prevent the melted resin from
running through, as the metal in the chamber becomes higher, in consequence of
the superfluous metal, which remains in the plate after the tinning process in the
pot, known as "
'the tin pot" being drained off by the action of the rolls; this
outlet receives it, and thus keeps the metal at the required level. At the mouth
of the pipe referred to, we place a suitable vessel to receive this superfluous metal,
which is again replaced in the "tin pot" and reworked. On the sides of the
rolls, where out of the metal and running across from end to end, we place
brush, made from any suitable material, the object of which is of great importance
viz to prevent the accumulation of metal on the surface of the rolls from their
continually revolving in it, by doing which they would, without these brushes, be
the means of placing on the plates an excessive coating. By the above process
and appliances we lessen the cost of tinning or coating, for the reason that, if
otherwise worked a greater quantity of metal would be placed on the plates, (than
in the present process now generally in use, viz of working through the grease
the finishing chamber) and thus considerably advance the cost of making-and we
save by this process, all cleaning labour, shudes, bran or other substance; also to
coat plates with less metal and palm oil; and to make a much more preferable
plate, commanding a better sale and price.
a
in
The accompanying drawing illustrates the apparatus and appliances the com-
bination of which we claim in working our new process-Fig 1 is a side view
Fig 2 front view Fig 3 plan Fig 6 cross section of a bath, the latter view showing

page_text: the appliances in position-Figs 4 and 5 are details of rolls and respectively side
and plan views; in all the figures like letters represent like parts, A rolls. B guides
for guiding plates to grip of rolls, when lifted by the cradle O which is made to
slide upon the rod H. D hole & pipe to drain the metal when it gets above the
right level-E brushes to keep rolls clear of metal F bath filled with metal-G lever
to work cradle J roll frame-K metal guard to prevent the rosin on surface of
metal from flowing out through the hole & pipe D.-C¹ is a pivoted support
carrying the nut in which the rod H works.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:-
The improved process and the combination of appliances herein illustrated and
described for coating or tinning plates, in the manufacture of tin and terne plates-
substantially as herein described and for the purposes set forth.
Dated this 13th day of October 1884.
J. D. THOMAS.
T. WADE EVANS.
J. GRAVELL.
By Herbert & Co., Agents,
67, Strand.