IMPROVEMENTS IN ROLLERS USED IN SPINNING MACHINERY.
Year: 1877

page_text: LETTERS PATENT to John Storer, of Glasgow, in the County of Lanark, North
Britain, for the Invention of "IMPROVEMENTS IN ROLLERS USED IN SPINNING
MACHINERY.
"
Sealed the 14th December 1877, and dated the 18th June 1877.
PROVISIONAL SPECIFICATION left by the said John Storer at the Office of
the Commissioners of Patents on the 18th June 1877.
JOHN STORER, of Glasgow, in the County of Lanark, North Britain.
MENTS IN ROLLERS USED IN SPINNING MACHINERY."
"IMPROVE-
This Invention has for its object to render certain rollers used in spinning
machinery less costly, less liable to get out of order, and more durable than as
hitherto made. The said rollers have generally consisted of a metal core or body
covered with leather or felt, and various other covering materials have been tried
but without satisfactory results.
· The present Invention consists, according to one modification, in covering the
metal core or body of the roller with cork, which may be cemented on in a single
piece or in two or more segments; and in carrying out the Invention the external
surface of the cork is by preference shaped by turning or otherwise after it has
been cemented in its place; and the surface is coated with sensitised gelatin or glue;
or the coating may consist of any other suitable substance or composition that is
not acted on by oil or-water. Instead of einploying solid cork, as herein-before
described, any suitable composition having ground cork as its principal ingredient
may be used. The coating of sensitised gelatin may also be advantageously used
for treating felt or similar material when employed for covering the rollers.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Storer in the Great Seal Patent Office on the 15th December
1877.
JOHN STORER, of Glasgow, in the County of Lanark, North Britain.
MENTS IN ROLLERS USED IN SPINNING MACHINERY."
"IMPROVE-
My said Invention has for its. object to render certain rollers used in spinning
machinery less costly, less liable to get out of order, and more durable than as
hitherto made. The said rollers have generally consisted of a metal core or body
covered with leather or felt, and various other covering materials have been tried
but without satisfactory results.
My Invention consists in covering the metal core or body of the roller with cork,
which may be cemented on in a single piece, or in two or more segments, the
external surface of the cork being shaped by turning in a lathe after the cork has
been cemented in its place, and a coating of sensitised gelatin or glue being finally
applied to the external surface.
And in order that my said Invention and the manner of performing the same
may be properly understood, I hereunto append a Sheet of explanatory Drawings to
be herein-after referred to in particularly describing the practical carrying out of
my improvements in what I believe to be the most advantageous manner.
Figure 1 on the accompanying Sheet of Drawings is a side elevation of a pair of
the: metal rollers as usually made and without the covering; Figure 2 represents
the same rollers as covered with_cork according to my Invention; and Figure 3' is
a cross section corresponding to Figure 2.
In this example the cork covering is shown as put on each roller in two segments;
but it might consist of a single piece in the form of a cylindrical shell, or it might'
consist of more than two segments; or, again, it might consist of one or more
pieces originally cut of a flat or more or less curved form, and afterwards bended
into a form to fit the roller.
When the cork is bended into the required form, heat, applied by means of steam
or otherwise, may be used to aid the operation and secure permanence of the form
given as is practised in bending wood.
Strong ordinary glue may be satisfactorily used for cementing the cork covering
upon the roller and for forming the joints between the edges of the cork segmenta.
The pieces to form the coverings are cut in any convenient way from cork selected
so as to be as dense as possible, and free from large worm holes; and their thickness
is made slightly in excess, so that after the pieces are cemented on the rollers good
external surfaces inȧy be formed by turning in a lathe.
In preparing the sensitised coating to be applied to the external surface of the
cork covering I find that satisfactory results are obtainable by mixing one part of
bichromate of potash with twenty parts of gelatin or glue, but other bichromates
or chromates or chromic acid may be used and in modified proportions.
The gelatin or gluo is dissolved in water in the usual way, and the bichromate or
chromate, dissolved in as little water as possible, is mixed with the dissolved glue or
gelatin, the whole being made of a consistency convenient for application to the
rollers. After a first coating has dried on a freshly turned cork surface I prefer to
render the surface true and smooth by means of sand paper applied in the lathe,
and to apply a second coating of the sensitised gelatin or glue. The treatment is
completed by exposing the rollers to diffused daylight for a short time.
When the surfaces of the rollers become unequally worn the rollers may be put
in a lathe and be turned slightly down so as to present fresh and true surfaces, 5
which may be coated with sensitised gelatin or glue, as before; and the surfaces
may in this way be renewed several times before it becomes necessary to apply
fresh coverings of cork.
As appears from my Provisional Specification relative hereto, I contemplated
applying other modifications of coatings to the rollers besides the one herein-before 5

page_text: described, but having found such other coatings to be inferior I now make no claim
respecting them.
Having thus particularly described my said Invention and the manner of
performing the same, I have to state that what I believe to be novel and original,
and claim as the Invention secured to me by the herein-before in part recited
Letters Patent is, the covering of metal rollers used in spinning machinery with
cork, the surface thereof being shaped by turning, and being coated with sensitised
gelatin or glue, as herein-before described.
In witness whereof, I, the said John Storer, have hereunto set my hand and
seal, this Fourteenth day of December, in the year of our Lord One thousand
eight hundred and seventy-seven.
Witness,
EDMUND HUNT.
Patent Agent,
Glasgow.
JOHN STORER. (L.S.)