IMPROVEMENTS IN THE MANUFACTURE OF COVERS APPLICABLE TO DRAWING OR PRINTING ROLLERS, AND AS ENDLESS BLANKETS
Year: 1865

page_text: LETTERS PATENT to Manuel Léopold Jonas Lavater and John Kershaw,
residing at Persan-Beaumont, Seine-et-Oise, in the Empire of France,
for the Invention of "IMPROVEMENTS IN THE MANUFACTURE OF COVERS
APPLICABLE TO DRAWING OR PRINTING ROLLERS, AND AS ENDLESS BLANKETS."
Sealed the 13th April 1866, and dated the 20th October 1865.
PROVISIONAL SPECIFICATION left by the said Manuel Léopold Jonas
Lavater and John Kershaw at the "Office of the Commissioners ot
Patents, with their Petition, on the 20th October 1865.
We, MANUEL LEOPOLD JONAS LAVATER and JOHN KERSHAW, residing as
Persau-Beaumont, Seine-et-Oise, in the Empire of France, do hereby declare
the nature of the said Invention for "IMPROVEMENTS IN THE MANUFACTURE OF
COVERS, APPLICABLE TO DRAWING OR PRINTING ROLLERS, AND AS ENDLESS BLANKETS,"
to be as follows:-
Heretofore it has been proposed to cover the drawing rollers used when
drawing fibrous materials or printing rollers with a covering of vulcanized
india-rubber, but for various reasons a covering of this material is attended
with disadvantage. Now according to our Invention we employ as a covering
for the rollers used in machinery for drawing fibrous materials, or for printing
rollers, tubes or cylinders of vulcanized india-rubber, coated or knitted, or
woven or braided, or coiled spirally over with a yarn of fibrous material,
producing thus a seamless fabric. The yarn is knitted, or woven, or braided,
[Poise 1]

page_text: or spirally coiled around the tube of india-rubber compound previous to its
being submitted to the requisite heat for vulcanization, and is so incorporated
with it; or the india-rubber tube may be vulcanized before covering with
yarn, and in this case the process of vulcanization preferred is that called the
"cold process." The outer surface of the yarn is afterwards glazed or covered
with a varnish of oxydizable oil, or a varnish of collodion or other varnish not
effected by water or greasy matters may be employed. A tubing prepared as
above described is afterwards cut into the requisite lengths for covering the
rollers, or to serve as endless blankets.
In place of the braiding of yarn being on the exterior of the tube of india-
rubber it may be incorporated with the india-rubber tube on its interior
surface, or between two layers of india-rubber. The surface is then glazed,
to protect it from the action of oily (easy matters.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Manuel Léopold Jonas Lavater and John Kershaw in the
Great Seal Patent Office on the 20th April 1866.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, MANUEL
LEOPOLD JONAS LAVATER and JOHN KERSHAW, residing at Persan-Beaumont,
Seine-et-Oise, in the Empire of France, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twentieth day of October, in the year of our Lord
One thousand eight hundred and sixty-five, in the twenty-ninth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us,
the said Manuel Léopold Jonas Lavater and John Kershaw, Her special
license that we, the said Manuel Léopold Jonas Lavater and John Kershaw,
our executors, administrators, and assigns, or such others as we, the said
Manuel Léopold Jonas Lavater aud John Kershaw, our executors, admi-
nistrators, 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 COVERS,
APPLICABLE TO DRAWING OR PRINTING ROLLERS, AND AS ENDLESS BLANKETS,"
the condition (amongst others) that we, the said Manuel Léopold Jonas
Lavater and John Kershaw, our executors or administrators, by an instrument
in writing under our or their hands and seals, or under the hand and seal of
upon

page_text: 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 Manuel Leopold Jonas Lavater, on
behalf of myself and the said John Kershaw, 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 state-
ment thereof, that is to say:-
Heretofore it has been proposed to cover the drawing rollers used when
drawing fibrous materials or printing rollers with a covering of vulcanized
india-rubber; but for various reasons a covering of this material is attended
with disadvantage. Now according to our Invention we employ as a covering
for the rollers used in machinery for drawing fibrous materials, or for printing
rollers, tubes or cylinders of vulcanized india-rubber, coated or knitted, or
woven 'or braided, or coiled spirally over with a yarn of fibrous material,
producing thus a seamless fabric. The yarn is kuitted, or woven or braided,
or spirally coiled around the tube of india-rubber compound previous to its
being submitted to the requisite heat for vulcanization, and is so incorporated
with it; or the india-rubber tube may be vulcanized before covering with
yarn,
and in this case the process of vulcanization preferred is that called the
"cold process." The outer surface of the yarn is afterwards glazed or covered
with a varnish of oxidizable oil, or a varnish of collodion or other varnish,
A tubing pre-
not affected by water, or greasy matters may be employed.
pared as above described is afterwards cut into the requisite lengths for
covering the rollers, or to serve as endless blankets. In place of the braid-
ing of yarn being on the exterior of the tube of india-rubber it may be
incorporated with the india-rubber tube on its interior surface, or between
The surface is then glazed to protect it from
two layers of india-rubber.
the action of oily or greasy matters.
In witness whereof, I, the said Manuel Léopold Jonas Lavater have
hereunto set my hand and seal, this Eighteenth day of April, in the
year of our Lord One thousand eight hundred and sixty-six.
M. L. J. LAVATER. (L.S.)