IMPROVEMENTS IN THE DRAWING ROLLERS OF SPINNING MULES
Year: 1873

page_text: LETTERS PATENT to John Henry Johnson, of 47, Lincoln's Inn Fields,
in the County of Middlesex, Gentleman, for the Invention of
“IMPROVEMENTS IN THE DRAWING ROLLERS OF SPINNING MULES." —A
communication from abroad by Marc Passieux, of Paris, in the
Republic of France.
Sealed the 26th August 1873, and dated the 27th March 1873.
PROVISIONAL SPECIFICATION left by the said John Henry Johnson
at the Office of the Commissioners of Patents, with his Petition,
on the 27th March 1873.
I, JOHN HENRY JOHNSON, of 47, Lincoln's Inn Fields, in the County of
Middlesex, Gentleman, do hereby declare the nature of the said In-
vention for "IMPROVEMENTS IN THE DRAWING ROLLERS OF SPINNING MULES,"
a communication to me from abroad by Marc Passieux, of Paris, in the
Danshlie of France to be as follows:-
PROVISIONAL SPECIFICATION left by the said John Henry Johnson
at the Office of the Commissioners of Patents, with his Petition,
on the 27th March 1873.
I, JOHN HENRY JOHNSON, of 47, Lincoln's Inn Fields, in the County of
5 Middlesex, Gentleman, do hereby declare the nature of the said In-
vention for "IMPROVEMENTS IN THE DRAWING ROLLERS OF SPINNING MULES,"
a communication to me from abroad by Marc Passieux, of Paris, in the
Republic of France, to be as follows :—
This Invention consists in the substitution for the duplex and costly
O covering of cloth and calf skin hitherto applied to the drawing rollers of

page_text: spinning mules of a single covering consisting of a tubular piece of india-
rubber stretched over the surface of the rollers, which covering is sub-
sequently coated with varnish to protect it from the influence of heat
and to render it his flexible.
By the use of rollers so covered a saving of at least thirty per cent. in 5
the first cost is effected, the thread is less liable to become broken, is of a
more even and regular character, and the cops produced therefrom are
much more compact and close.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Henry Johnson in the Great Seal Patent :
Office on the 26th September 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
HENRY JOHNSON, of 47, Lincoln's Inn Fields, in the County of Middlesex,
Gentleman, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-seventh day of March, in the
year of our Lord One thousand eight hundred and seventy-three, in
the thirty-sixth year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto me, the said John Henry Johnson,
Her special license that I, the said John Henry Johnson, my executors,
administrators, and assigns, or such others as I, the said John Henry
Johnson, my executors, administrators, or 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 DRAWING ROLLERS OF SPINNING MULES," a communi-
cation to me from abroad by Marc Passieux, of Paris, in the Republic of
France, upon the condition (amongst others) that I, the said John Henry
Johnson, my executors or administrators, by an instrument in writing
under my hand and seal, 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.

page_text: NOW KNOW YE, that I, the said John Henry Johnson, 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 statement, reference being had to the accompanying
Drawings, and to the letters and figures marked thereon, that is to say :-
In cotton spinning mule rollers are at present employed covered first
with cloth and secondly with calf skin.
This system, which is employed generally in cotton and also cashmere
wool spinning mills, presents in addition to the expence several incon-
veniences, thus, for example, the threads frequently break and the cops
are not close.
By dispensing with the two coverings ordinarily employed (videlicet
cloth and leather) and substituting for them a single covering of india-
rubber in the condition of a tube coated with varnish, the inconveniences
herein-before mentioned are at once obviated.
The advantages obtained by means of this tube are a saving which is
estimated at at least thirty per cent., that moreover the threads break
much less frequently, and they are more regular and the cop is closer.
This last result is of the greatest importance with regard to the varnish,
its object is to render the india-rubber covering less flexible, and to
preserve it from the action of heat and from wear; this varnish being
made with water may be readily renewed in proportion as it wears off,
so that the india-rubber lasts so to speak for an indefinite period;
moreover when it is unfit for use the remains may be sold again for
remoulding.
And in order that the said Invention may be fully understood I shall
now proceed more particularly to describe the same, and for that purpose
shall refer to the figures and letters on the accompanying Drawing.
Figure 1 of the Drawing shews a roller covered according to the
former system, and Figure 2 a roller covered with the varnished india-
rubber tube according to this Invention.
In Figure 1 (which shews the former system) a is the roller, which is
covered with cloth 6 and with leather c, and d is the journal.
In Figure 2, a is the roller, e the varnished india-rubber tube which
covers the same, and ƒ is the journal.
Having now described and particularly ascertained the nature of the
said Invention, and the manner in which the same is or may be used or

page_text: carried into effect, I would observe in conclusion that what i consider to
be novel and original, and therefore claim as the Invention secured to
me by the herein-before in part recited Letters Patent is, the application
to the rollers of spinning mules of a covering of india-rubber in the
condition of a tube coated with varnish for the purpose herein-before
described.
carried into effect, I would observe in conclusion that what i consider to
be novel and original, and therefore claim as the Invention secured to
me by the herein-before in part recited Letters Patent is, the application
to the rollers of spinning mules of a covering of india-rubber in the
condition of a tube coated with varnish for the purpose herein-before
described.
In witness whereof, I, the said John Henry Johnson, have to this
my Specification set my hand and seal, this Twentieth day of
September, One thousand eight hundred and seventy-three.