CERTAIN IMPROVEMENTS IN MACHINERY OR APPARATUS TO BE EMPLOYED IN PREPARING COTTON AND OTHER FIBROUS SUBSTANCES FOR SPINNING
Year: 1865

page_text: LETTERS PATENT to James Thompson, of Blackburn, in the County of
Lancaster, Cotton Spinner, for the Invention of "CERTAIN IMPROVEMENTS
IN MACHINERY OR APPARATUS TO BE EMPLOYED IN PREPARING COTTON AND
OTHER FIBROUS SUBSTANCES FOR SPINNING."
Sealed the 19th September 1865, and dated the 7th April 1865.
PROVISIONAL SPECIFICATION left by the said James Thompson at the
Office of the Commissioners of Patents, with his Petition, on the 7th
April 1865.
I, JAMES THOMPSON, of Blackburn, in the County of Lancaster, Cotton
Spinner, do hereby declare the nature of the said Invention for "CERTAIN
IMPROVEMENTS IN MACHINERY OR APPARATUS TO BE EMPLOYED IN PREPARING COTTON
AND OTHER FIBROUS SUBSTANCES FOR SPINNING," to be as follows:-
My Invention relates to the apparatus employed in preparing cotton and
fibrous materials for spinning known as the carding engine, and to that
portion thereof called the "doffing motion," being the mechanism actuating
doffing comb" for stripping the cotton from the cards of the doffing
roller.
The improvements consist in a novel arrangement and combination of:
mechanism designed to impart the necessary oscillating movement to the

page_text: "comb stock," and to produce the usual vibratory movement of the " doffing
comb." The apparatus consists of an eccentric secured on a driving shaft,
which eccentric is encircled and embraced by a band or "clip," from which a
bar or finger projects and enters an aperture or slot in a boss at the end of
the "comb stock," so that as the eccentric rotates it causes the tail or finger
on the clip to vibrate, and so to impart an oscillating motion to the "comb
stock," which is mounted in bearings as usual. The eccentric and clip and
slotted boss of the "comb stock" are enclosed within a case on the framing
of the carding engine containing lubricant to prevent overheating of the
frictional parts.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said James Thompson in the Great Seal Patent Office on the
7th October 1865.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
THOMPSON, of Blackburn, in the County of Lancaster, Cotton Spinner, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Seventh day of April, in the year of our Lord
One thousand eight hundred and sixty-five, in the twenty-eighth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said James Thompson, Her special license that I, the said James Thompson,
my executors, administrators, and assigns, or such others as I, the said
James Thompson, my 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
IMPROVEMENTS IN MACHINERY OR APPARATUS TO BE EMPLOYED IN PREPARING COTTON
AND OTHER FIBROUS SUBSTANCES FOR SPINNING," upon the condition (amongst
others) that I, the said James Thompson, 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 Inven-
tion, 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 James Thompson, do hereby declare
the nature of the said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement and accompanying Drawings (that is to say):-
My Invention relates to the apparatus employed in preparing cotton and
other fibrous materials for spinning known as the carding engine, and to
that portion thereof called the " doffing motion," being the mechanism
actuating the "doffing comb" for stripping the cotton from the cards of the
doffing roller.
The improvements consist in a novel arrangement and combination of
mechanism designed to impart the necessary movement to the "comb stock,"
and to produce the usual vibratory movement of the "doffing comb." The
apparatus consists of an eccentric secured on a driving shaft, which eccentric
is encircled and embraced by a band or "clip," from which a bar or finger
projects and enters an aperture or slot in a boss at the end of the "comb
stock," so that as the eccentric rotates it causes the tail or finger on the clip
to vibrate, aad so to impart an oscillating motion to the "comb stock"
which is mounted in bearings as usual. The eccentric and clip and slotted
boss of the "comb stock" are enclosed within a case on the framing of the
carding engine containing lubricant to prevent overheating of the frictional
parts.
In order that the Invention may be better understood and explained in
detail I have hereunto attached Sheet of Drawings, made about the full
size, similar letters of reference being marked upon corresponding parts on
all the Figures.
Fig. 1 represents a front elevation of the apparatus for actuating the doffing
or stripping blade, shewn in the position it would occupy on the framing of the
carding engine; Fig. 2 represents an internal view of the said apparatus
actuating the "comb stock" and stripping blade, the front plate of the case
and the driving pulley being removed to shew the internal construction ;
Fig. 3 is a vertical front section, and Fig. 4 is a plan view of the same having
the lid or cover removed for the same purpose.
In Figs. 1, 2, 3, and 4, a, a, is the box or case containing the mechanism;
b, the comb; and c, the comb stock, the ends of which are worked in bearings;
one of these bearings d, which is formed on the case or box a, allows the comb-
stock shaft c to enter the interior and fit into the horizontal aperture of the
double boss e, to which it is secured. The vertical aperture in this boss is
fitted with a sliding finger or stud f, which forms a portion of the ring or clip g,
from which it projects; this ring g forms the clip of the eccentric h, the shaft

page_text: of which is supported and revolves in the bearings i formed in the case or
box a.
The eccentric h receive motion from the pulley k, which gives a
vibratory motion to the tail or finger f, and by means of the double boss e
imparts an oscillating motion to the comb stock c and its comb or blade b;
the case or box a, in which the apparatus is confined, being filled with oil or
other lubricant.
Having now described the nature of the said Invention. together with the
method of carrying the same into practical effect, I wish it to be distinctly
understood that I claim the novel combination and arrangement of mechanism
for effecting the necessary vibratory motion of the doffing comb employed to
strip the cotton from the doffing roller in carding engines, as herein-before
described, set forth, and fully illustrated in the Drawings attached.
In witness whereof, I, the said James Thompson, have hereunto set my
hand and seal, this Fourth day of October, in the year of our Lord One
thousand eight hundred and sixty-five.
Witnessed by
JOHN L. DAVIES, C.E.,
Office for Patents,
Manchester.
JAMES THOMPSON. (L.S.)