IMPROVEMENTS IN THE MANUFACTURE OF TIN AND TERNE PLATES
Year: 1860

page_text: LETTERS PATENT to John Saunders and Joseph Piper, of Cookley Iron
Works, Kidderminster, for the Invention of "IMPROVEMENTS IN THE
MANUFACTURE OF TIN AND TERNE PLATES."
Sealed the 4th December 1860, and dated the 6th June 1860.
PROVISIONAL SPECIFICATION left by the said John Saunders and
Joseph Piper at the Office of the Commissioners of Patents, with
their Petition, on the 6th June 1860.
We, JOHN SAUNDERS and JOSEPH PIPER, of Cookley Iron Works, Kidder-
minster, 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-

page_text: 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 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.
According to our Invention we take the plates out of the washman's pot,
and instead of brushing them and finishing them off in the mode heretofore in
use, we remove the surplus metal by passing them through rollers fixed near
the side of the washman's pot, or in a hot-air chamber, or partially or wholly
submerged in hot grease or oil or other fatty matter, or in any kind of flux
(the rollers being turned by hand or power), after which they are put in a
rack, and when cool are finished.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Saunders and Joseph Piper in the Great Seal Patent
Office on the 5th December 1860.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JOHN
SAUNDERS and JOSEPH PIPER, of Cookley Iron Works, Kidderminster, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Sixth day of June, in the year of our Lord
One thousand eight hundred and sixty, in the twenty-third year of
Her reign did, for Herself, Her heirs and successors, give and grant
unto us, the said John Saunders and Joseph Piper, Her special licence
that we, the said John Saunders and Joseph Piper, our executors,
administrators, and assigns, or such others as we, the said John Saunders
and Joseph Piper, our executors, administrators, and assigns, should at any
time agree with, and no others, from time to time and at all times there-
after during the term therein expressed, should and lawfully might make,

page_text: use, exercise, and vend within the United Kingdom of Great Britain and
Ireland, the Channel Islands, and Isle of Man, an Invention for "IMPROVE-
MENTS IN THE MANUFACTURE OF TIN AND TERNE PLATES," upon the condition
(amongst others) that we, the said John Saunders and Joseph Piper, our
executors or administrators, by an instrument in writing under our or their
hands and seals, or under the band 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 we, the said John Saunders, and Joseph Piper,
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 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.
According to our Invention we take the plates out of the washman's pot,
and instead of brushing them and finishing them off in the mode heretofore in
use, we remove the surplus metal by passing them through rollers fixed near
the side of the washman's pot, or in a hot-air chamber, or partially or wholly
submerged in hot grease or oil or other fatty matter, or in any kind of flux

page_text: (the rollers being turned by hand or power), after which they are put in a
rack, and when cool are finished.
In witness whereof, we, the said John Saunders and Joseph Piper,
have hereunto set my hand and seal, this Twenty-fourth day of
November, in the year of our Lord One thousand eight hundred
and sixty.
JOHN SAUNDERS. (L.S.)
JOSEPH PIPER. (L.S.)
JOHN SAUNDERS. (L.S.)
JOSEPH PIPER.
(L.S.)

page_text: and sixty.
DISCLAIMER AND MEMORANDUM OF ALTERATION proposed to be
entered by the said John Saunders and Joseph Piper, as such Patentees
as aforesaid, pursuant to the Statutes in that case made and provided.
WHEREAS since the filing of the Specification to the said Letters Patent
an objection has been taken to the validity of the said Patent on the alleged
ground that a claim is made in the Specification to the omission of the process
of brushing the plates at the "washman's pot," and that such omission of
brushing was not new at the date of the grant. It has further been objected
that the Specification, in proposing to employ the rollers mentioned separately.
or in a bot chamber, describes inefficient means of finishing tin and terne
plates after they have left the washman's pot.
And it has been further objected that the words "or in any kind of flux'
are too general and uncertain. For these reasons we wish to disclaim, and we
do hereby disclaim such parts of the said Specification as claim or imply a
claim to the omission of the process of brushing at the washman's pot, or to

page_text: any part of the process of manufacturing tin and terne plates described in the
said Specification, up to and including the use of the washman's pot, when such
omission or such part of the said process of manufacture is considered separate
and apart from the use of the rollers fixed near the washman's pot, and
partially or wholly immersed in hot grease or oil, or other fatty matter, instead
of the finishing processes heretofore in use after the washman's pot. And
with a view to render the Specification consistent with such Disclaimer, we
alter the same by introducing after the words "are finished" at the end of the
Specification tho words following:-But we make no claim to the omission of
the process of brushing at the washnian's pot, nor do we claim any part of the
And for the reasons aforesaid we wish to disclaim, and we do hereby
disclaim the words following in the second paragraph of the Specification, and
near the end of the same, "or in a hot air chamber, or," and also the words
"or in any kind of flux" in the same paragraph.
And in order that the effect of this Disclaimer and Memorandum of
Alteration may be better understood, we annex a copy of the Specification
as it will appear when such Disclaimer and Memorandum of Alteration have
been made as aforesaid.
"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 con-
taining 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 containing 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 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
"
46
*
"

page_text: "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.
¢¢
st
According to our Invention we take the plates ont of the washman's pot,
"and instead of brushing them and finishing them off in the mode heretofore
"in use, we remove the surplus metal by passing them through rollers fixed
વહ near the side of the washman's pot, partially or wholly submerged in hot
grease or oil, or other fatty matter (the rollers being turned by hand or
"power), after which they are put in a rack, and when cool are finished.
"But we make no claim to the omission of the process of brushing at the
washman's pot, nor do we claim any part of the process of manufacturing
"tin and terne plates herein described, up to and including the use of the
"washman's pot, when considered separate and apart from the use of the
"rollers fixed near the washman's pot, and partially or wholly immersed in
"hot grease or oil, or other fatty matter, instead of the finishing process
"heretofore in use after the washman's pot."
In witness whereof, we, the said John Saunders and Joseph Piper, have
bereunto set our hands and seals, this Seventh day of November, in
the year of our Lord One thousand eight hundred and sixty-six.
I hereby grant my fiat giving leave to the above-named John Saunders
and Joseph Piper to file in the Great Seal Patent Office, with the Speci-
fication to which the same relates, the above-written Disclaimer and Memo-
randum of Aleration.
Lincoln's Inn,
JOHN ROLT,
November 30th, 1866.
Attorney-General.