AN IMPROVED COMPOSITION APPLICABLE FOR THE MANU- FACTURE OF ELASTIC ROLLERS
Year: 1879

page_text: LETTERS PATENT to James Burbridge, Manager at Messrs. W. Warne & Co's.
India Rubber Works, Tottenham, Middlesex, Robert Cureton Thorpe, Chemist,
Tottenham, Middlesex, and Thomas Oakley, Engineer, Tottenham, Middlesex,
for the Invention of "AN IMPROVED COMPOSITION APPLICABLE FOR THE MANU-
FACTURE OF ELASTIC ROLLERS"
Sealed the 1st July 1879, and dated the 3rd February 1879.
PROVISIONAL SPECIFICATION left by the said James Burbridge, Robert
Cureton Thorpe, and Thomas Oakley at the Office of the Commissioners of
Patents on the 3rd February 1879.
"
JAMES BURBRIDGE, Manager at Messrs. W. Warne & Co's. India Rubber Works,
Tottenham, Middlesex, ROBERT CURETON THORPE, Chemist, Tottenham, Middlesex,
"AN IMPROVED COM-
and THOMAS OAKLEY, Engineer, Tottenham, Middlesex.
POSITION APPLICABLE FOR THE MANUFACTURE OF ELASTIC ROLLERS."
This Invention relates to the preparation of a composition specially applicable as
an elastic covering for rollers for wringing and washing machines; also for litho-
graphic and other printing purposes.
The composition consists of sulphurized linseed or other oil, or a mixture of
these sulphurized oils with a proper proportion of fibrous material and gum resin or
pitch mixed therewith, according to the purpose for which the composition is to be
used, as the softness and elasticity of the rollers is regulated by the quantity of
fibrous material and gum resin or pitch in proportion to the quantity of sulphurized
oil used.
When the sulphurized oil, the fibrous material, and the gum resin or pitch have
been thoroughly mixed (which is done by means of heated rollers), the composition
is then fit for moulding on to the spindles or stocks of the printing, washing, or
other rollers. The rollers formed of this composition are subjected to a heat of
about 300 degrees Fahrenheit, for about 3 hours, after which process they will be
unaffected either by heat or cold...
For printing and other similar purposes a soft plastic composition is obtained by
a proportion of three to four lbs. of rags or other fibrous material to six lbs. of sul-
purized oil and about one lb., of gum resin or pitch; and for wringing and washing
machines, any softness or elasticity can be obtained according to desire, some pre-
ferring a soft roller and others that of a harder nature. 3, 4, and 4 lbs. of fibrous
D

page_text: material added to about 14 lbs. of gum, resin, or pitch, and 6 lbs. of sulphurized oil
give three good and useful modifications.
The composition is united to iron or other metal by means of a thin layer of
yulcanite next to the iron or other metal, a process well understood in the trade.
It will be sometimes found desirable to cover the roller with a thin layer of india
rubber containing just such a proportion of precipitated sulphuret of antimony or
sulphur as shall make-it-of-the-same-softness and elasticity as the composition
-already-on-the-roller,-when-both-are-submitted together to the heat before mentioned.
"
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said James Burbridge, Robert Cureton Thorpe, and Thomas Oakley in
the Great Seal Patent Office on the 1st August 1879.
JAMES BURBRIDGE, Manager at Messrs. Warne & Co's. India Rubber Works,
Tottenham, Middlesex, ROBERT CURETON THORPE, Chemist, Tottenham, Middlesex,
and THOMAS OAKLEY, Engineer, Tottenham, Middlesex. "AN IMPROVED COM-
POSITION APPLICABLE FOR THE MANUFACTURE OF ELASTIC ROLLERS."
This Invention relates to the preparation of a composition specially applicable as
an elastic covering for rollers for wringing and washing machines; also for litho-
graphic and other printing purposes.
The composition consists of sulphurized linseed or other oil, or a mixture of these
sulphurized oils with a proper proportion of fibrous material and gum resin or pitch
mixed therewith, according to the purpose for which the composition is to be used,
as the softness and elasticity of the rollers is regulated by the proportion of fibrous
material and gum, resin, or pitch added to the sulphurized oil used.
When the sulphurized oil, the fibrous material, and the gum, resin, or pitch have
been thoroughly mixed (which is done by means of heated rollers), the composition
-is-then-fit for moulding on to the spindles-or stocks of the printing, wringing, or
other rollers. The rollers formed of this composition are subjected to a heat of
about three hundred degrees Fahrenheit for about three hours, after which process
they will be unaffected either by heat or cold.
For printing and other similar purposes, a soft plastic composition is obtained by
a proportion of three to four pounds of rags or other fibrous material to six pounds
of sulphurized oil, and about one pound of gum, resin, or pitch; and for wringing
and washing machines, any softness or elasticity can be obtained, according to desire,
some preferring a soft roller and others that of a harder nature.
Three-and-a-half, four, and four-and-a-half pounds of fibrous material added to
about one and a half pound of gum, resin, or pitch, and combined with six pounds
of sulphurized oil, gives three good and useful modifications.
The composition is united to iron or other metal by means of an intervening
thin layer of vulcanite, which is applied to the iron or other metal in the manner
well understood in the trade.

page_text: It will be sometimes found desirable to cover the elastic roller with a thin layer
of india rubber, containing just such a proportion of precipitated sulphuret of
antimony or sulphur as will give it the same softness and elasticity as the com-
position already on the roller, when both are submitted together to the curing
operation, or it may be sometimes covered with a layer of skin of what is known
as compounded rubber.
In some cases we propose to use the composition above described for the forma-
tion of what we term laminated rollers. Thus we prepare the thin sheet of the
composition, and coil it up with a thin sheet of compound rubber, or of canvas or
other cloth, and thus obtain a roller covering possessing the degree of elasticity
required.
Having now set forth the nature of our Invention of "An Improved Composition
Applicable for the Manufacture of Elastic Rollers," and explained the manner of
carrying the same into effect, we wish it to be understood that under the above in
part recited Letters Patent, we claim the manufacture of elastic composition, as and
for the purpose above described.
In witness whereof, I, the said James Burbridge, have hereunto set my hand
and seal, the Thirtieth day of July, in the year of our Lord One thousand
eight hundred and seventy nine.
JAMES BURBRIDGE. (L.S.)