TARDED IN THE MANUFACTURE OF TIN AND TERNE PLATES
Year: 1859

page_text: LETTERS PATENT to John Hughes, William Williams, and George Leyshon,
of Brockmoor Works, Brierley Hill, Staffordshire, for the Invention of
TARDED IN THE MANUFACTURE OF TIN AND TERNE PLATES"
Sealed the 7th October 1859, and dated the 13th April 1859.
PROVISIONAL SPECIFICATION left by the said John Hughes, William
Williams, and George Leyshon at the Office of the Commissioners of
Patents, with their Petition, on the 13th April 1859.
.: We, JOHN HUGHES, WILLIAM WILLIAMS, and GEORGE LEYSHON, of Brock-
moor Works, Brierley Hill, Staffordshire, do hereby declare the nature of the
Invention for "IMPROVEMENTS IN THE MANUFACTURE OF TIN AND TERNE PLATES,"
to be as follows::-
This Invention has for its object improvements in the manufacture of tin
and terne plates. Heretofore in the manufacture of tin and terne plates it
has been usual to immerse the plates after they have been cleaned by pickling
in a pot or vessel containing hot grease, in order to remove all moisture from
the plates; they are then transferred to a pot-or vessel containing molten tin
or terne metal (known as the tinman's pot), and are there allowed to soak for
some time, afterwards they are passed on to another pot or vessel, also con-
taining molten tin or terne metal, and known as the washman's pot; here the
surfaces of the plates are brushed over, the superfluous metal being as far as

page_text: possible removed therefrom. When this is accomplished the plate is deposited
in a rack contained in another pot or vessel, which is filled with grease, heated
to a sufficient degree to keep the metal on the surface of the plate liquid, to
allow the excess to drain off. When the plates have stood for a time in the
hot grease they are carefully removed from the rack one at a time by tongs,
and are placed in a rack to cool; the plates are then finished, with the
exception of removing the thickened edge formed at the bottom of the plate,
by the accumulation of the metal at this edge during the draining process.
The plates are finished by dipping these edges in a shallow bath of hot metal,
which melts off the accumulation of metal.
Now according to our Invention, in place of putting the plates after they
have passed through the washman's pot into a pot of hot grease, we place the
plates in a rack contained in another pot of hot metal, and when the rack is
full we raise it slowly and with a steady motion out of the pot. While the
plates are thus being raised out of the liquid metal the superfluous metal runs
off, and when the plates have cooled, which they are allowed to do in the rack,
they are finished.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Hughes, William Williams, and George Leyshon, in the
Great Seal Patent Office on the 13th October 1859.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JOHN
HUGHES, WILLIAM WILLIAMS, and GEORGE LEYSHON, of Brockmoor Works,
Brierley Hill, Staffordshire, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirteenth day of April, in the year of our Lord
One thousand eight hundred and fifty-nine, in the twenty-second year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us, the
said John Hughes, William Williams, and George Leyshon, Her special
licence that we, the said John Hughes, William Williams, and George Leyshon,
our executors, administrators, and assigns, or such others as we, the said
John Hughes, William Williams, and George Leyshon, our executors,
administrators, and assigns, should at any time agree with, and no others,
from time to time and at all times thereafter during the term therein ex-
pressed, should and lawfully might make, use, exercise, and vend, within
the United Kingdom of Great Britain and Ireland, the Channel Islands,
and Isle of Man, an Invention for "IMPROVEMENTS IN THE MANUFACTURE OF

page_text: TIN AND TERNE PLATES," upon the condition (amongst others) that we, the
said John Hughes, William Williams, and George Leyshon, our executors or
administrators, by an instrument in writing under our or their hands and seals,
or under the hand and seal of one of us or them, should particularly describe
and, ascertain the nature of the said Invention, and in what manner the same
was to be performed, and cause the same to be filed in the Great Seal Patent
Office within six calendar months next and immediately after the date of the
said Letters Patent.
NOW KNOW YE, that I, the said John Hughes, on behalf of myself and
the said William Williams and John Leyshon, do hereby declare the nature.
of the said Invention, and in what manner the same is to be performed, to
be. particularly described and ascertained in and by the following statement
thereof, that is to say:-
This Invention has for its object improvements in the manufacture of tin
and terne plates. Heretofore, in the manufacture of tin and terne plates, it
has been usual to immerse the plates after they have been cleaned, by pickling
in a pot or vessel containing hot grease in order to remove all moisture from
the plates. They are then transferred to a pot or vessel containing molten tin
or terne metal (known as the tinman's pot,) and are there allowed to soak for
some time; afterwards they are passed on to another pot or vessel also con-
taining molten tin or terne metal, and known as the washman's pot. Here
the surfaces of the plates are brushed over, the superfluous metal being as far
as possible removed therefrom; when this is accomplished, the plate is depo-
sited in a rack contained in another pot or vessel, which is filled with grease,
heated to a sufficient degree to keep the metal on the surface of the plate
liquid to allow the excess to drain off. When the plates have stood for a time
in the hot grease, they are carefully removed from the rack one at a time by
tongs, and are placed in a rack to cool; the plates are then finished, with the
exception of removing the thickened edge formed at the bottom of the plate
by the accumulation of the metal at this edge during the draining process.
The plates are finished by dipping these edges in a shallow bath of hot metal,
which melts off the accumulation of metal.
Now, according to our Invention, in place of putting the plates after they
have passed through the washman's pot into a pot of hot grease, we place the
plates in a rack contained in another pot of hot metal, and when the rack is
full we raise it slowly and with a steady motion out of the pot.
While the
plates are thus being raised out of the liquid metal, the superfluous metal runs
off, and when the plates have cooled, which they are allowed to do in the rack,
they are finished.

page_text: Having to state
to describe the manner of performing the same.
DESCRIPTION OF THE DRAWING.
Figure 1 shows a side elevation, partly in section, of apparatus and
mechanism combined in a suitable manner for carrying out our Invention;
Figure 2 shows a plan thereof; Figure 3, a transverse section thereof; and
Figure 4, a plan of the rack in the finishing pot on a larger scale than that
to which the other Figures are drawn. In these Figures the same letters
are used to indicate similar parts.
By reference to Figures 1 and 2, it will be seen that in the combination or
arrangement of apparatus and mechanism shown there is a grease pot, a tin
pot, and washman's pot as heretofore used, but in place of their having a
grease pot with a rack therein as heretofore from which the plates are raised
one at a time by tongs, and also in place of using a shallow bath of hot
metal after such grease pot in order to remove the extra thickness of
metal at the edges from the plates after the plates have been allowed to
cool and drain, we use a finishing pot A with hot metal therein in which
is used a rack B, into which the plates are put as they come from the
washman's pot, and such rack when full is raised slowly and steadily out
of such finishing pot by means of the mechanism shown in the Drawing. As
the rack with the plates is raised out of the hot metal in the pot A the super-
fluous metal runs off, and when the plates have cooled, which they are allowed
to do in the rack, they are finished. Q, Q, are two vertical plates which at
their upper edges come somewhat above the melted metal. These plates are
fixed in the pot A, and the edges Q', Q', aid to guide the rack B as it is
being raised.
The upper edges of these plates prevent the floating
impurities coming to the centre of the pot after the same have been
skimmed off and placed at the ends of the pot, and such skimming is done
before the rack B is raised. The rack B is raised out of the finishing pot A
by means of the chains C, C, and the wheels or pulleys D, D, on the axis E,
and for this purpose the axis E is caused to rotate slowly by means of the
hand wheel F. On the axis E there is also fixed the pulley or wheel G, from
which there is suspended the counterbalance weight H by a chain or cord I.
The axis E is capable of sliding in the bearings J, J, and it is caused to do so
when the rack B has been raised out of the finishing pot A. The sliding
movement of the axis E is effected by means of the hand wheel K fixed on
the axis L. On the axis L is a crank or arm M which (by means of
connecting rods N attached at one end to the forked ends of the arm M, and

page_text: at the other to the cross head O fixed on the end of the axis E) gives motion
to the axis E.
Having thus described the nature of our Invention, and the manner of
performing the same, we would have it understood that we make no claim to
any parts of the apparatus or mechanism separately; but what we claim is,
the combined means of manufacturing tin and terne plates herein described.
In witness whereof I, the said John Hughes, have hereunto set my
hand and seal, this Fourth day of October, in the year of our Lord
One thousand eight hundred and fifty-nine.
JOHN HUGHES. (L.S.)