AN IMPROVED METHOD OF SECURING INDIA-RUBBER CYLINDERS OR ROLLERS AND BLOCKS UPON SPINDLES AND OTHER BODIES ON WHICH THEY ARE TO BE MOUNTED
Year: 1862

page_text: LETTERS PATENT to Henry Griffin, of Silvertown, in the County of
Essex, Engineer, in the employment of Messieurs Silver and Company,
for the Invention of "AN IMPROVED METHOD OF SECURING INDIA-RUBBER
CYLINDERS OR ROLLERS AND BLOCKS UPON SPINDLES AND OTHER BODIES ON
WHICH THEY ARE TO BE MOUNTED."
Sealed the 1st May 1863, and dated the 6th November 1862.
PROVISIONAL SPECIFICATION left by the said Henry Griffin at the
Office of the Commissioners of Patents, with his Petition, on the 6th
November 1862.
I, HENRY GRIFFIN, of Silvertown, in the County of Essex, Engineer, in the
5 employment of Messieurs Silver and Company, do hereby declare the nature of
the said Invention for "AN IMPROVED METHOD OF SECURING INDIA-RUBBER
CYLINDERS OR ROLLERS AND BLOCKS UPON SPINDLES AND OTHER BODIES ON WHICH
THEY ARE TO BE MOUNTED," to be as follows:-
My Invention consists in first coating or clothing the spindle or other body
on which india-rubber is to be mounted with a composition of india-rubber
for forming what is known as hard rubber, and in then adding on -such
composition to complete the article to the thickness required ordinary india-
rubber; I then subject the spindle or other body with its clothings of
prepared and ordinary rubber to heat, in order to "cure" the composition,

page_text: When the curing has been effected, the ordinary rubber will be securely held
on the spindle or other body through the cured or hard rubber, which itself
becomes securely fixed to the spindle or other body.
SPECIFICATION in pursuance of the conditions of the Letters Patent
filed by the said Henry Griffin in the Great Seal Patent Office on the
6th May 1863..
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
GRIFFIN, of Silvertown, in the County of Essex, Engineer, in the employment
of Messieurs Silver and Company, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Sixth day of November, in the year of our Lord One
thousand eight hundred and sixty-two, in the twenty-sixth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the
said Henry Griffin, Her special licence that I, the said Henry Griffin,
my executors, administrators, and assigns, or such others as I, the said Henry
Griffin, 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 METHOD
OF SECURING INDIA-RUBBER CYLINDERS OR ROLLERS AND BLOCKS UPON SPINDLES
AND OTHER BODIES ON WHICH THEY ARE TO BE MOUNTED," upon the condition
(amongst others) that I, the said Henry Griffin, my executors or adminis-
trators, 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 six calendar months
next and immediately after the date of the said: Letters Patent.
NOW KNOW YE, that I, the said Henry Griffin, 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 thereof, that is to say :-
My Invention consists in first coating or clothing the spindle or other body
on which india-rubber is to be mounted with a composition of india-rubber
for forming what is known as ebonite or hard rubber, and in then adding on
such composition to complete the article to the thickness required ordinary

page_text: or pure india-rubber, or rubber known as cut sheet rubber (that is to say,
sheets of rubber cut from a solid block), or rubber prepared for being vul-
canized; I then subject the spindle or other body with its clothings of
prepared or hard rubber composition and ordinary or other rubber, as before
mentioned, to heat in order to "cure" the composition. When the curing
has been effected, the ordinary or other rubber will be securely held on the
spindle or other body through the cured or hard rubber, which itself becomes
securely fixed to the spindle or other body.
In witness whereof, I, the said Henry Griffin, have hereunto set my
hand and seal, this Fifth day of May, One thousand eight hundred
and sixty-three.
HENRY GRIFFIN. (L.S.)