AN IMPROVED PROCESS OF CLEANING AND POLISHING TIN AND OTHER PLATES
Year: 1873

page_text: LETTERS PATENT to Thomas Fulham Parsons, of Maindee, in the
-
County of Monmouth, Chemist, for the Invention of "AN IMPROVED
PROCESS OF CLEANING AND POLISHING TIN AND OTHER PLATES.”
Sealed the 20th October 1873, and dated the 26th April 1873.
PROVISIONAL SPECIFICATION left by the said Thomas Fulham Parsons
at the Office of the Commissioners of Patents, with his Petition,
on the 26th April 1873.
I, THOMAS FULHAM PARSONS, of Maindee, in the County of Mon-
mouth, Chemist, do hereby declare the nature of the said Invention for
"AN IMPROVED PROCESS OF CLEANING AND POLISHING TIN AND OTHER PLATES," to
be as follows :-
In the manufacture of tin plates as hitherto practised plates or sheets
of iron are coated with tin and finished by immersing them in oil, and
polishing them with bran which is applied by hand.
The chief objects of my Invention are to obtain a superior finish of the
said tin plates, and a reduction of the cost of labor in their manufacture.
For this purpose I take the said plates after their immersion in oil and
dip them in a bath of hot alkaline water to remove the oil from their
surfaces. This alkaline bath may be contained in a vat or cistern of

page_text: stone, slate, or other suitable material. Then the said plates are passed
through a polishing machine which gives them a brilliant finish.
I may use any suitable machine for this purpose, but I prefer a
machine provided with from three to four pairs of rollers covered with
skin or other soft material. During the operation of polishing the tin
plates the said rollers are supplied with bran, whiting, or other suitable
polishing substance.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Thomas Fulham Parsons in the Great Seal Patent
Office on the 25th October 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
FULHAM PARSONS, of Maindee, in the County of Monmouth, Chemist,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters.
Patent bearing date the Twenty-sixth day of April, in the year of our Lord
One thousand eight hundred and seventy-three, in the thirty-sixth year
of Her reign, did, for Herself, Her heirs and successors, give and grant
unto me, the said Thomas Fulham Parsons, Her special licence that I,
the said Thomas Fulham Parsons, my executors, administrators, and
assigns, or such others as I, the said Thomas Fulham Parsons, 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 "AN IMPROVED
PROCESS OF CLEANING AND POLISHING TIN AND OTHER PLATES," upon the con-
dition (amongst others) that I, the said Thomas Fulham Parsons, my
executors or administrators, by an instrument in writing under my,
or their, or one of their hands and seals, 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 seven calendar months next and immediately.
after the date of the said Letters Patent.

page_text: NOW KNOW YE, that I, the said Thomas Fulham Parsons, do hereby
declare the nature of my said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement:-
In the manufacture of tin plates as hitherto practised, plates or sheets
of iron are coated with tin, and finished by immersing them in oil and
polishing them with bran which is applied by hand.
The chief objects of my Invention are to obtain a superior finish of
the said tin plates, and a reduction of the cost of labour in their manu-
facture. For this purpose I take the said plates after their immersion
in oil and dip them in a bath of hot alkaline water to remove the oil
from their surfaces. This alkaline bath may be contained in a vat or
cistern of stone, slate, or other suitable material. Then the said plates
are passed through a polishing machine, which gives them a brilliant
finish.
I may use any suitable machine for this purpose, but I prefer a
machine provided with from three to four pairs of rollers covered with
skin or other soft material. During the operation of polishing the tin
plates the said rollers are supplied with bran, whitening, or other suit-
able polishing substance.
Terne plates and other metallic plates or sheets may be treated in the
same manner.
Having thus described my said Invention, and the manner of per-
forming the same, I wish it understood that I claim, the improved
process of cleaning and polishing tin and other metal plates, as herein
set forth.
In witness whereof, I, the said Thomas Fulham Parsons, have here-
unto set my hand and seal, this Twenty-third day of October.