AN IMPROVED DOFFER OR 'STRIPPER' FOR CARDING ENGINES FOR PREPARING COTTON AND OTHER FIBROUS SUBSTANCES
Year: 1862

page_text: LETTERS PATENT to James Taylor, of Oldham, in the County of Lan-
caster, Cotton Spinner, for the Invention of "AN IMPROVED DOFFER
OR 'STRIPPER' FOR CARDING ENGINES FOR PREPARING COTTON AND OTHER
FIBROUS SUBSTANCES."
Sealed the 22nd August 1862, and dated the 21st June 1862.
PROVISIONAL SPECIFICATION left by the said James Taylor at the
Office of the Commissioners of Patents, with his Petition, on the 21st
June 1862.
I, JAMES TAYLOR, of Oldham, in the County of Lancaster, Cotton Spinner,
do hereby declare the nature of the said Invention for "AN IMPROVED
DOFFER' OR 'STRIPPER' FOR CARDING ENGINES FOR PREPARING COTTON AND
OTHER FIBROUS SUBSTANCES," to be as follows:-
My Invention relates to that part of the carding engine known as the
"doffer," and employed to strip the fibrous material from the card cylinder.
The improvement consists in the employment and use of stripping blades,
shewn in the accompanying Diagram at a, arranged radially upon a cylinder
or other axis, and rotating within a cylinder or shield b, containing apertures
through which the stripping blades project in succession only at such place as
is required for doffing and returning again, cleansing themselves of the cotton
against the edges of the apertures in the cylinder.

page_text: A modification of this doffer may be effected by arranging the blades upon
a shaft passing through the shaft of the cylinder, which is made hollow and of
large diameter. Either may be actuated or driven distinctly or in connection,
that is, the blades may be made to drive the cylinder by contact.
+
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said James Taylor in the Great Seal Patent Office on the
20th December 1862.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
TAYLOR, of Oldham, in the County of Lancaster, Cotton Spinner, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-first day of June, in the year of our Lord One
thousand eight hundred and sixty-two, in the twenty-fifth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
James Taylor, Her special license that I, the said James Taylor, my
executors, administrators, and assigns, or such others as I, the said James
Taylor, 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 "AN IMPROVED 'DOFFER' OR
⚫ STRIPPER FOR CARDING ENGINES FOR PREPARING COTTON AND OTHER FIBROUS
SUBSTANCES," upon the condition, amongst others, that I, the said James
Taylor, by an instrument in writing under my hand and seal, "should parti-
cularly 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 James Taylor, 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 and accompanying Drawings (that is to say) :-
My Invention relates to that part of the carding engine known as the
"doffer," and employed to strip the fibrous material from the card cylinder.
The improvement consists in the employment and use of stripping blades,

page_text: arranged radially upon a cylinder or other axis, and rotating within a cylinder
or shield containing apertures through which the. stripping blades project in
succession only at such places. as is required for doffing and retiring again,
cleansing themselves of the cotton against the edges of the apertures in the
cylinders.
.
A modification of this "doffer comb" may be effected by arranging the
blades upon a shaft passing through the shell of the cylinder, which is made
hollow and of large diameter. Either may be actuated or driven distinctly or
in connection, that is, the blades may be made to drive the cylinder by contact.
In order that the Invention may be better understood and explained in
detail, I have hereunto attached a Sheet of Drawings, made upon a scale of
about one inch and a half to the foot, similar letters of reference being marked
upon corresponding parts in all the Figures.
Fig. 1 represents that portion of the carding engine to which the improve-
ment is applied, shewing the stripping apparatus in section; Fig. 2 is a plan
of the improvement or arrangement for stripping the "doffer," a portion being
shewn in section to display the internal construction; Fig. 3 is a full-sized
view of the same; in Fig. 4 (full size) the knives are shewn as hinged upon
discs keyed on the shaft, but may also be employed in a rigid state, one of the
said discs to be placed near the end of the cylinder, through the medium of
which the cylinder may be propelled; Fig. 5 (full size) is a modification,
wherein the fulcrum or support of the rings is placed as far as convenient
from the knife aperture in the shield for the purpose of diminishing the angle
of such aperture. In Fig. 1 a, a, is the framing of of the machine, in which the
"doffer" 6 is supported; c is a shaft, placed slightly out of the centre of the
shield or case d, upon which shaft the "combs" or "knives" e, e, e, are arranged
by means of the rings f. f. to which the "knives" are secured in such a
manner as to allow them to adjust themselves to the angle which they assume
in revolution. The shield d may be driven as shewn by a projection g on the
comb shaft c acting in a groove in the end of the cylinder, and the entire appa-
ratus may be "set" or adjusted to the "doffer" by the sliding block h, by
which it is supported. The operation of the "knives" upon the "doffer" is
effected by means of the shaft being placed eccentrically to the shield, so that
as the shaft rotates the knives are caused to project from the apertures in
the shield to "strip" the cotton from the doffer, and to retire again within
the shield, and in so retiring to divest themselves of the cotton against the
edges of the apertures. In Fig. 3 the rings f. f, are loose upon the shaft, and
the "knives' are connected thereto with or without hinges on the rings; and
"

page_text: i
in Fig. 5 the rings are hinged to the discs i keyed on the shaft, the hinge
fulcrum or joint k being placed at the furthest available point from the
aperture in the shield to lesson the angle required and allow the rotation of
the knives.
Having now described the nature of the said Invention, together with the
method of carrying the same into practical effect, I would remark in conclusion
that I claim, first, placing the axis of the combs eccentric to the centre of
the cylinder or shield, the novel combination and arrangement of mechanism
for effecting the stripping of the cotton from the "doffer," as herein-before
described, set forth, and fully illustrated in the Drawings attached.
In witness whereof, I, the said James Taylor, have hereunto set my
hand and seal, this Seventeenth day of December, in the year of our
Lord One thousand eight hundred and sixty-two.
JAMES TAYLOR. (L.S.)