IMPROVE- MENTS IN THE MANUFACTURE OF TIN AND TERNE PLATES
Year: 1868

page_text: LETTERS PATENT to William Williams, of Tividale, in the County of
Stafford, Tin Plate Manufacturer, for the Invention of "IMPROVE-
MENTS IN THE MANUFACTURE OF TIN AND TERNE PLATES."
Sealed the 25th September 1868, and dated the 3rd April 1868.
PROVISIONAL SPECIFICATION left by the said William Williams at
the Office of the Commissioners of Patents, with his Petition, on
the 3rd. April 1868.
I, WILLIAM WILLIAMS, of Tividale, in the County of Stafford, Tin
Plate Manufacturer, do liereby declare the nature of the said Invention
for "IMPROVEMENTS IN THE MANUFACTURE OF TIN AND TERNE PLATES," to be as
follows:-
In the ordinary manufacture of tin and terne plates the iron plates
to be coated with tin or terne metal after having been cleaned by pickling
are immersed 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

page_text: vessel containing melted 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 containing melted tin or terne
metal (and known as the washman's pot); here the surface of the
plates are brushed over, the superfluous metal being as far as possible
removed therefrom. When this is accomplished the plates are 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 some 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 at the bottom of the plate, the said thickened edge
being formed by the accumulation of the metal 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.
My Invention consists in conducting the manufacture of tin and
terne plates in the manner herein-after described, my said Invention
being improvements on an Invention described in the Specification of
Letters Patent granted to 'me, and John Hughes, and. George Leyshon, a
and dated September 4th, 1860, No. 2131,
According to my Invention I dispense with the pot or vessel con-
taining hot grease, and the pot or vessel containing tin or terne metal
known as the tinman's pot, and I conduct the manufacture in the
following manner: I employ a washman's pot divided into three or
more compartments, each containing tin or terne metal. "On the surface
of the metal in the first compartment I put flux or grease, and I also
put flux or grease on the surface of the metal in the third compart-
ment. After the plates have been cleaned by pickling I immerse the
said plates through the flux or grease into the metal in the first
compartment: From the first compartment the plates are passed under
the division between the first and second compartments into the second
compartment; from the second compartment the plates are lifted by
tongs and plunged into the third compartment through the "flux or
grease on the surface of the metal in the said third compartment;
from the third compartment the plates are lifted by tongs and carried
to the rack 'described in the Specification of the Patent herein-before

page_text: referred to, from which point the manufacture is conducted in the
manner described in the said Specification..
By my Invention much labour is saved. by diminishing: the number
of processes through which the plates are passed, and the loss of metal
by oxidation as well as injury to the plates by the high temperature
employed in the ordinary manufacture are avoided..
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Williams in the Great Seal Patent
Office on the 26th September 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
WILLIAMS, of Tividale, in the County of Stafford, Tin Plate Manufacturer,
send grecting.
مدة
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Third day of April, in the year of
our Lord One thousand eight hundred and sixty-eight, in the thirty-
first year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said William Williams, Her special
licence that I, the said William Williams, my executors, adminis-
trators, and assigns, or such others as I, the said William Williams,
my 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 expressed, 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 TIN AND TERNE PLATES," upon
the condition (amongst others) that I, the said William Williams, my
executors or administrators, by an instrument in writing under my,.or
their, or one of their hands and scals, 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..
Scal Patent Office within six calendar. months next and immediately after:
the date of the said Letters Patent.

page_text: NOW KNOW YE, that I, the said William Williams, '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:—
In the ordinary manufacture of tin and tern plates the iron plates
to be coated with tin or terne metal after having been cleaned by
pickling are immersed 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 melted tin or terne metal (known as the
tinman's pot), and are there allowed to soak for some time; afterwards
they are passed into another pot or vessel also containing melted tin
or terne metal (and known as the washman's pot); here the surface
of the plates are brushed over, the superfluous metal being as far as
possible removed therefrom. When this is accomplished the plates
are deposited in a rack 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 some 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 at the bottom of the plates, the said thickened edge at
the bottom of the plates being formed by the accumulation of the metal
during the draining process. The plates are finished by dipping these
edges in a shallow bath of hot metal, which mclts off the accumulation
of metal.
My Invention consists in conducting the manufacture of tin and terne
plates in the manner hercin-after described, my said Invention being
improvements on an Invention described in the Specification of Letters
Patent granted to me and John Hughes and George Leyshon, and dated
September 4th, 1860, No. 2131.
According to my Invention I dispense with the pot or vessel con-
taining hot grease, and the pot or vessel containing tin or terne metal
known as the tinman's pot, and I conduct the manufacture in the
following manner:-I employ a washman's pot divided into three or
more compartments, each containing tin or ternc metal; on the surface
of the metal in the first compartment I put flux or grease, and I also put
flux or grease on the surface of the metal in the third compartment;

page_text: after the plates have been cleaned by pickling I immerse the said
plates through the flux or grease into the metal in the first com- .
partment. From the first compartment the plates are passed under
the division between the first and second compartments into the second
compartment; from the second compartment the plates are lifted by
tongs and plunged into the third compartment through the flux or
grease on the surface of the metal in the said third compartment;
from the third compartment the plates are lifted by tongs and carried
to the rack described in the Specification of the Patent herein-before
referred to, from which point the manufacture is conducted in the
manner described in the said Specification.
By my Invention much labour is saved by diminishing the number
of processes through which the plates are passed, and the loss of metal
by oxidation, as well as injury to the plates by the high temperature
employed in the ordinary manufacture are avoided.
Having explained the nature of my Invention I will proceed to
describe with reference to the accompanying Drawing the manner in
which the same is to be performed.
Figure 1 represents, partly in vertical section and partly in clevation,
a washman's pot and parts connected therewith constructed according to
my Invention; and Figure 2 is a plan of a portion of the same. The
same letters are employed to indicate the same parts in each Figure of
the Drawing.
a is the washman's pot, divided into three compartments, marked
respectively b, c, d. The compartment 6 consists of a trough open at
top and bottom, fixed in the manner represented at one side of the
compartment c. Each of the compartments b, c, d, contains tin or terne
metal. The top of the trough or compartment brises some distance
above the top of the other compartments, and its lower end is situated
below the level of the metal in the said compartments. On the surface
of the metal in the compartment 6 I put flux or grease, and I also
put flux or grease on the surface of the metal in the compartment ȧ,
the surface of the metal in the middle compartment c having no flux or
grease upon it. The plates to be coated having been cleaned or treated
in the ordinary way I immerse them through the flux or grease on the
metal in the compartment 6 into the metal in the said compartment;

page_text: from the compartment the plates are passed under the division ³
-between the compartments b, c, into the compartment c having no
flux or grease on the surface of the metal; from the compartment c
the plates are lifted by tongs and plunged into the metal in the com-
partment d through the flux or grease on the surface of. the metal in
the said compartment. The course which the plates take through the
compartments b, c, d, of the pot a is indicated by the arrows in Figure 1.
The plates are lifted from the compartment & and carried to a rack
placed in the finishing pot e containing tin or terne metal. From the
pote they are removed by the moveable rack f.f, as described in the
Specification of the Patent before referred to, and the manufacture is
completed in the ordinary way. The parts represented above the rack f,f,
are for the purpose of lowering the rack into or lifting it from the pot e.
Although I prefer to put no flux or grease on the surface of the metal in
the middle compartment c, yet if required flux or grease may be put on
the surface of the metal in the said middle compartment c.
Figures 3 and 4 represent the arrangement shewn in Figures 1 and 2
duplicated; whereby the first compartment containing flux or grease ou
the surface of the metal therein may be used by two workmen employed
at different pots arranged on either side of the said compartment, as
represented. In the said Figures 3 and 4 the parts are marked with
the same letters of reference as corresponding parts in Figures 1 and 2.
By an examination of the said Figures 3 and 4 the manner in which
the double pot is used will be readily understood. The course which the
two series of plates being coated take in passing through the double
pot is indicated by the arrows in Figure 3. At the back of the double
washman's pot, Figures 3 and 4, are chambers g, h, for .containing
superfluous grease, and also a chamber i for containing superfluous tin
or terne metal, and at the back of the pots e, e, are chambers k for
holding superfluous metal and grease.
Having now described the nature of my Invention, and the manner
in which the same is to be performed, I wish it to be understood that
I do not limit.myself to the precise details herein described and illus-
trated, as the same may be varied without departing from the nature
of my Invention,; but I claim as my Invention, the improvements in
the manufacture of tin and terme plates, herein-before described and
illustrated in the accompanying Drawing, that is to say, conducting

page_text: tho manufacture of tin and terne plates by using a washman's pot
divided into three or more compartments, each compartment containing
tin or terme metal, substantially as described and illustrated.
In witness whercof, I, the said William Williams, have hereunto
I set my hand and seal, this Twenty-third day of September, in
the year of our Lord One thousand eight hundred and sixty-
eight.
Witness,
RICHARD SKERRETT,
Clerk to George Shaw,
Birmingham.
WILLIAM WILLIAMS: (L.S.)