IMPROVEMENTS IN MACHINERY FOR RAISING THE PILE OF WOOLLEN AND OTHER CLOTHS
Year: 1859

page_text: LETTERS PATENT to William Kempe, of Holbeck Mills, Leeds, for the
Invention of "IMPROVEMENTS IN MACHINERY FOR RAISING THE PILE OF
WOOLLEN AND OTHER CLOTHS."
Sealed the 13th March 1860, and dated the 29th September 1859.
PROVISIONAL SPECIFICATION left by the said William Kempe at the
Office of the Commissioners of Patents, with his Petition, on the 29th
September 1859.
I, WILLIAM KEMPE, of Holbeck Mills, Leeds, do hereby declare the nature
of the Invention for "IMPROVEMENTS IN MACHINERY FOR RAISING THE PILE OF
WOOLLEN AND OTHER CLOTHS," to be as follows:-
This Invention has for its object improvements in machinery for raising the
pile of woollen and other cloths. Heretofore in such descriptions of machinery
the relation between the movement of the cloth and the raising cylinder has
been constant. Now my Invention consists in arranging raising machines in
such manner that the speed of the cloth in respect to that of the raising.
cylinder, or the speed of the raising cylinder to that of the cloth, may be
varied from time to time, as the quality of the cloth or the state of finish
thereof may require. For these purposes I prefer to drive the raising cylinder
by means of a disc and friction roller or pulley, in such manner that by the

page_text: friction pulley or roller being moved to or from the centre of the disc, the
desired variation of speed may be obtained. In such case the motion to the
cloth rollers is retained as heretofore, but this may be varied, as may also be
the case in regard to giving motion to the raising cylinder, so long as the
power of varying the relation of the speed between the raising cylinder and 5
that of the cloth be retained.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Kempe in the Great Seal Patent Office on the 29th
March 1860.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
KEMPE, of Holbeck Mills, Leeds, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-ninth day of September, in the year of our
Lord One thousand eight hundred and fifty-nine, in the twenty-third year of
Iler reign, did, for Herself, Her heirs and successors, give and grant. unto
me, the said William Kempe, Her special licence that I, the said William
Kempe, my executors, administrators, and assigns, or such others as I, the
said William Kempe, my executors, administrators, 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
MACHINERY FOR RAISING THE PILE OF WOOLLEN AND OTHER CLOTHS," upon the con-
dition (amongst others) that I, the said William Kempe, my executors_or
administrators, by an instrument in writing under my, or their, or one of
their hands and seals, 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 William Kempe, 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
thereof, that is to say:-
This Invention has for its object improvements in machinery for raising the
pile of woollen and other cloths. Heretofore in such descriptions of machinery

page_text: the relation between the movement of the cloth and the raising cylinder has
been constant. Now my Invention consists in arranging raising machines in
such manner that the speed of the cloth in respect to that of the raising
cylinder or the speed of the raising cylinder to that of the cloth may be varied
from time to time, as the quality of the cloth or the state of finish thereof may
require. For these purposes I prefer to drive the raising cylinder by means
of a disc and friction roller or pulley, in such manner that by the friction'
pulley or roller being moved to or from the centre of the disc the desired
variation of speed may be obtained. In such case the motion to the cloth rollers
is retained as heretofore, but this may be varied, as may also be the case in
regard to giving motion to the raising cylinder so long as the power of varying
the relation of the speed between the raising cylinder and that of the cloth be
retained.
.
In carrying out my Invention I prefer to adopt the following method:-The
clotli is caused to move through the machine at a constant speed. On the
frame end of the machine in any convenient position I fix a socket parallel to
the driving shaft; in this socket I place a short shaft having a spur wheel and
disc fixed to its outer end, the inner end being acted upon by a lever and
weight, so as to give a constant and uniform pressure upon the friction pulley-
hereafter named; this wheel gears into and is actuated by a similar one on
the driving shaft. In the same plane, but at right angles to this shaft, I fix a
grooved cross shaft carried by suitable bearings projecting from the frame; on
this shaft I place a pulley covered with leather or any other suitable substance
that will enable it to bite or have a grip upon the friction plate before
mentioned; this pulley is free to slide upon the grooved cross shaft from end
to end, but rotates with the shaft, being carried by a key or feather in the
groove; parallel to this cross shaft in any convenient or suitable position I fix
a screw of equal length to the cross shaft; this screw carries a nut having an
extended web with forked ends, which ends work into a circular groove cut in
the boss of the friction pulley, so that by turning the screw from left to right,
or the contrary, the friction pulley is moved equally with the screw, and by
this means removed nearer to or further from the centre of the revolving disc
plate, and thereby the speed of the cross shaft varied to suit the requirements
of the work. On the outer end of the cross shaft I fix a pulley, which, by
means of a belt or other arrangement, actuates another pulley fixed upon
another cross shaft parallel to the first-named cross shaft, but fixed higher
up on the frame end of the machine; on this last-named cross shaft I fix a
worm, which gears into a worm wheel fixed upon the shaft end of the raising
cylinder, thereby giving motion to the raising cylinder, whose speed, as will be

page_text: perceived, will be in exact proportion to the position of the friction pulley upon
the revolving disc.
Although I have described the precise arrangement of apparatus for varying
the speed of the raising cylinder, I would state that I do not confine myself
thereto, as machinists will readily understand that the speed of the cloth in
place of being constant may be varied, and also that a varying speed may be
communicated to the raising cylinder by gearing and apparatus differing in
detail from what I have above described.
I would, therefore, have it understood that what I claim is, the combining
mechanism with raising machines, in such manner that the speed of the
raising cylinder may be varied from time to time as the process of raising may-
require it, and the consequent relative speeds of the cloth and the raising
surface may be varied, as above described.
In witness whereof, I, the said William Kempe, have hereunto set my
hand and seal, this Twenty-ninth day of March, in the year of our Lord
One thousand eight hundred and sixty.
WILL. KEMPE.
(L.S.)