Year: 1887

page_text: We, WILLIAM ALFRED SIMMONS of 13 Buchan Road, Nunhead, in the County of
Surrey, Printer, and JAMES SILVESTER of 10 Elm Villas, Elin Grove, Peckham, in
the County of Surrey, Printer, do hereby declare the nature of this invention to be as
follows
--
Our invention relates to certain new and useful improvements in letter-press and
lithographic rollers and which invention has for its object to overcome the disad-
vantages common to the composition letter press and lithographic rollers at present
in use.
Hitherto it has been customary to surround a roller stock with certain compositions,
one of which may be described as consisting of a composition of gelatine, glue, and
treacle, all of which compositions though fulfilling their purpose in some respects, are
unable to resist the heat generated by high friction of the rollers, the consequence
being that the composition melts.
Our invention may be described as follows:-
We surround the stock of rollers with any suitable composition such as that
commonly in use, and cover the said composition with a layer of canvas, linen, or
other textile fabric, and repeat the operation until the roller is of a sufficiently firm
consistence. We do not wish to confine ourselves to any number of layers of composition
or of textile fabric, as the number of layers depends mainly upon the amount of strength
and elasticity required.
In order to make the several layers of composition, and textile fabric firm, and to
prevent said layers from sliding or moving one upon the other, heat is applied to the
said layers in any suitable way, but preferably by exposing the said rollers to hot
steam.
The last layer of composition should be made with a grain, or suitably roughened
upon its surface which takes up and distributes the ink in a more effective manner
than if said rollers had smooth surfaces, also the outer grain prevents the roller from
skidding or sliding off the letter-press, type or lithographic stone. There are
"

page_text: several methods by which the said surfaces may be grained or roughened but we prefer
to effect the same in any of the following ways:-
Another
Before the layer of composition quite set, a layer of textile fabric is wrapped
tightly around it, and after the composition is set hard the said textile fabric may be
removed and the grain of the fabric will remain imprinted upon the roller.
suitable way is to roll the roller over a roughened surface of hard substance before the
composition is quite set, with the result that the roughened surface of the liard substance
remains imprinted upon the composition roller.
.
Yet another way is to riffle or roughen the cylinder, in which the composition is
placed when forming the roller, which may be easily taken from the cylinder when the
composition is set.
By the means herein set forth we are enabled to render rollers used for letterpress
and lithographic purposes capable of overcoming the defects above referred to.
Dated this 28th day of September 1887.
HORN & SON,.
Agents on behalf of Applicants

page_text: We, WILLIAM ALFRED SIMMONS, of 13 Buchan Road, Nunhead, in the County of
Surrey, Printer, and JAMES SILVESTER, of 10 El Villas, Elm Grove, Peckham, in
the County of Surrey, Printer, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:-
-
This our invention relates to certain new and useful improvements in letter-press
an lithographic rollers, and which invention has for its object to overcome the disad-
vantages common to the composition letter press and lithographic rollers at present
in use.
Hitherto it has been customary to surround a roller stock with certain compositions,
one of which may be described as consisting of a composition of gelatine, glue and
treacle, all of which compositions though fulfilling their purpose in some respects, are
unable to resist the heat generated by high friction of the rollers; the consequence
being that the composition cracks and melts.
In this our invention, we surround the stock of the rollers with any suitable
composition, such as that commonly in use, and cover the said compositions with a layer
of canvas, linen, mosquito net, or other textile fabric, and repeat the operation until
the roller is of a sufficiently firm consistance. We do not wish to confine ourselves to
any number of layers of composition or of textile fabric, as the number of layers
depends mainly upon the amount of strength and elasticity required.
An alternative method of constructing our invention consists in melting the
composition in a suitable melting pot and in which composition the textile fabric is
saturated. Said saturated textile fabric is then taken out of the composition and one
of its edges is adjusted along the periphery of a roller stock, which is slowly revolved
until the desired size is attained when the composition is allowed to cool.
Said roller stock wound with the saturated fabric in the manner aforedescribed is
then placed between the centres of a lathe, and a piece of flannel or other suitable
material saturated with hot water is adjusted over the roller in such a manner that one
end of the flannel rests in a trough containing hot water, and the remaining depending
end is suitably attached to weights. By this arrangement, a constant supply of hot
water passes on the syphon principle through the piece of flannel, which presses with
an even and constant pressure upon the periphery of the roller, by reason of the
weights attached thereto. When the roller is revolved in the lathe, a finished and
even surface is imparted to the outer surface, and by reason of the roughness of the
flannel any irregularities on the surface of the roller, are removed, and a more accurate
diameter is attained.

page_text: Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is
1st. A letter press or lithographic roller, consisting of a stock surrounded with any
suitable composition, and said composition covered with any number of layers of
canvas, linen, mosquito net or other suitable textile fabric substantially as and for the
purposes hereinbefore described and set forth.
2nd. A letter press or lithographic roller, consisting of a stock wound with any
number of layers of canvas, linen, mosquito net or other textile fabric previously
saturated in any suitable composition, and the manner in which said rollers are
constructed, all substantially as and for the purposes hereinbefore set forth.
Dated this 28th day of June 1888.