CERTAIN IMPROVEMENTS IN MACHINERY FOR CARDING COTTON AND OTHER. FIBROUS SUBSTANCES
Year: 1864

page_text: LETTERS PATENT to Frederick Wilkinson and William Rossetter, both of
Accrington, in the County of Lancaster, Mechanics, for the Invention of
"CERTAIN IMPROVEMENTS IN MACHINERY FOR CARDING COTTON AND OTHER.
FIBROUS SUBSTANCES."
Sealed the 30th August 1864, and dated the 11th March 1864.
PROVISIONAL SPECIFICATION left by the said Frederick Wilkinson and
William Rossetter at the Office of the Commissioners of Patents, with
their Petition, on the 11th March 1864.
We, FREDERICK WILKINSON and WILLIAM ROSSETTER, both of Accrington, in
the County of Lancaster, Mechanics, do hereby declare the nature of the
said Invention for "CERTAIN IMPROVEMENTS IN MACHINERY FOR CARDING COTTON
AND OTHER FIBROUS SUBSTANCES," to be as follows:-
Our Invention consists in various improved combinations of machinery for
stripping the doffers of carding engines, whereby the vibration caused by the
rapid motion of the ordinary stripping combs is avoided.
The first part of our Invention consists in the application of two vibrating.
doffing combs to the same doffer, one comb is attached to arms projecting.
from a solid shaft, and the other is attached to arms projecting from a hollow
shaft; these shafts are eccentric to each other, and the hollow shaft is moved
so as to draw the comb attached to it from the face of the doffer during the
up stroke; by this arrangement the combs in working clear each other, or the

page_text: shafts may both be solid, and the one moved to draw the comb from the doffer
during the up stroke.
The second arrangement consists in the application of two or more combs
working in guides, and actuated by eccentrics or cams, each comb acting in
succession on the doffer, thus effectually stripping the fleece off it.
The last part of our Invention consists in an improved revolving comb, the
toothed blades of which are hinged to an axle. When a comb has taken a
part of the fleece off the doffer its position is governed to prevent the fibres
being taken around the axle by studs or other equivalents at each end of the
comb, thus allowing the fleece to be carried forward by the drawing or
calender rollers. As soon as the fibres are freed from the comb it regains its
original position by springs or otherwise.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Frederick Wilkinson and William Rossetter in the Great
Seal Patent Office on the 10th September 1864.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, FREDERICK
WILKINSON and WILLIAM ROSSETTER, both of Accrington, in the County of
Lancaster, Mechanics, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Eleventh day of March, in the year of our Lord
One thousand eight hundred and sixty-four, in the twenty-seventh year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us, the
said Frederick Wilkinson and William Rossetter, Her special license that
we, the said Frederick Wilkinson and William Rossetter, our executors,
administrators, and assigns, or such others as we, the said Frederick Wilkinson
and William Rossetter, our executors, administrators, and assigns, should at
any time agree with, and no others, from time to time and at all times there-
after 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 "CERTAIN IMPROVE-
MENTS IN MACHINERY FOR CARDING COTTON AND OTHER FIBROUS SUBSTANCES," upon
the condition (amongst others) that we, the said Frederick Wilkinson and
William Rossetter, our executors or administrators, by an instrument in writing
under our, or their, or one of our or 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

page_text: Seal Patent Office within six calendar months next and immediately after the
date of the said Letters Patent.
NOW KNOW YE, that we, the said Frederick Wilkinson and William
Rossetter, do hereby declare the nature of our said Invention, and in what
manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement, that is to say):-
=
Our Invention consists in various improved combinations of machinery for
stripping the doffers of carding engines, whereby the vibration caused by the
rapid motion of the stripping combs is reduced or avoided.
And in order that our Invention may be fully understood and readily
carried into operation, we will proceed to describe the accompanying Sheet of
Drawings, reference being had to the figures and letters marked thereon.
Figures 1 and 2 represent one of our improved arrangements of machinery
for stripping the doffer, part of which is shewn at a. The stripping comb b is
attached to arms c fixed to the hollow shaft & fitting on the eccentrics e of the
solid shaft f, which revolves in bearings g, and is turned round by a band
passing around the speed pulley h. To one end of the hollow shaft d is fixed
a slot lever i; the sides of the slot are bevelled, as shewn in Figure 3, and in
it fits the sliding block j, through which passes a stud k, which is screwed into
the end of the radius rod 7; this rod has a vibrating motion imparted to it by
the eccentric m fixed on the shaft f, and this vibrating motion is communicated
to the hollow shaft d and comb 6 by the stud k and lever i; the object of the
eccentrics e is to draw the comb from the face or wire of the doffer during the
up stroke. The comb is counterbalanced in the ordinary manner by pro-
jections from the arms c. By driving the shaft f in the direction of the arrow
in Figure 1, the friction of the eccentrics e in the hollow shaft & prevents the
sudden shock which combs driven in the ordinary manner are subjected to.
The shock is also reduced by the elliptic motion imparted to the comb.
Figure 4 represents a modification of this part of our Invention. In this
arrangement the arms c of the comb b are fixed to the hollow shaft d, within
which is the concentric solid shaft f revolving in slide blocks n, fitting in slots
in the standards 9; at each end of the shaft f is fixed an eccentric or cam o,
working between the fixture p and the spring stud q. The shape of the
eccentric or cam o is governed according to the diameter of the doffer, so that
when the shaft f revolves the combs in descending follows the circumference of
the doffer, and in ascending the comb is moved away from the face of the
doffer by the spring stud q.
Figure 5 represents in section our improved revolving stripping comb. r is
a shaft, to which rotary motion is given; at each end of the shaft is a flange,

page_text: and between these flanges the comb stocks s are supported; each stock is
furnished with a comb b. To each bearing or standard of the shaft is fixed
a cam t, and to each comb stock is fixed a stud, which, as the shaft r revolves,
comes against the cam and causes each comb as it passes the doffer to rotate
partially on its axis, thus causing each comb to strip a portion of the
circumference of the doffer. The combs are held in the position shewn when
they have passed the doffer by the concentric portion of the cams t, and when
nearly arrived at the position for again stripping they are drawn by a spring
coiled around the comb stock into the position shewn by the upper comb in
the Drawing.
Having thus stated the nature of our Invention, and described the manner
of performing the same, we declare that we claim,―
First, the improved combination of eccentrics and shafts for working doffer
stripping combs, as shewn and described in reference to Figures 1, 2, and 3.
Secondly, the combination of eccentrics or cams for giving to the doffer
stripping comb a motion concentric to the circumference of the doffer, as
shewn and described in reference to Figure 4.
And, lastly, the improved revolving stripping comb, as shewn and described
in reference to Figure 5.
In witness whereof, we, the said Frederick Wilkinson and William
Rossetter, have hereto set our hands and seals, the Eighth day
of September, One thousand eight hundred and sixty-four.
FREDERICK WILKINSON. (L.s.)