CERTAIN IMPROVEMENTS IN CARDING FRATERS DERIAVED POP CARDING COTTON AND OTHER FIBROUS SUBSTANCES."
Year: 1862

page_text: LETTERS PATENT to John Brown, of Middleton, in the County of Lancaster,
Machinist, for the Invention of "CERTAIN IMPROVEMENTS IN CARDING
FRATERS DERIAVED POP CARDING COTTON AND OTHER FIBROUS SUBSTANCES."
PROVISIONAL SPECIFICATION left by the said John Brown at the
Office of the Commissioners of Patents, with his Petition, on the 29th
September 1862.
I, JOHN BROWN, of Middleton, in the County of Lancaster, Machinist, do
hereby declare the nature of the said Invention for "CERTAIN IMPROVEMENTS IN
CARDING ENGINES EMPLOYED FOR CARDING COTTON AND OTHER FIBROUS SUBSTANCES,'
to be as follows :-
My Invention relates to that portion of the carding engine known as the
"doffer," a principle feature therein being the ready adjustment of the
"doffing comb" or knife. The improvement consists in a novel method of
imparting an adjustable rocking motion to the shaft to which the doffing
comb is secured, which is effected as follows:-A slotted tail piece or quadrant
is keyed upon the rocking shaft, and is connected by means of a connecting
rod with an eccentric or crank driven by band and pulley or other
means,
the

page_text: connection with the slotted quadrant being effected by screw and nut, rack
and pinion, or other equivalent means, by which the position of the connecting
rod may be adjusted in the slot of the tail piece or quadrant so as to lengthen
or shorten the curvilinear motion or course thus given to the doffer as
required
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Brown in the Great Seal Patent Office on the
26th March 1863.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
BROWN, of Middleton, in the County of Lancaster, Machinist, 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 sixty-two, in the twenty-sixth year of Her
reign, did, for Herself, Her beirs and successors, give and grant unto me, the
said John Brown, Her special license, that I, the said John Brown, my
executors, administrators, and assigns, or such others as I, the said John
Brown, 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 "CERTAIN IMPROVEMENTS IN
CARDING ENGINES EMPLOYED IN CARDING COTTON AND OTHER FIBROUS SUB-
STANCES," upon the condition (amongst others) that I, the said John Brown,
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 John Brown, 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) :-
66
My Invention relates to that portion of the carding engine known as the
doffer," a principal feature therein being the ready adjustment of the

page_text: "doffing comb" or knife. The improvement consists in the novel method of
imparting an adjustable rocking motion to the shaft to which the doffing
comb is secured, which is effected as follows:-A slotted tail piece or quadrant
is keyed upon the rocking shaft, and is connected by means of a connecting
rod with an eccentric or crank driven by band and pulley or other means, the
connection with the slotted quadrant being effected by screw and nut, rack
and pinion, or other equivalent means, by which the position of the connecting
rod may be adjusted in the slot of the tail piece or quadrant so as to lengthen
or shorten the curvilinear motion or course thus given to the doffer as
required.
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 three inches to the foot, similar letters of reference being marked upon
corresponding parts of the apparatus.
66
Fig. 1 is a side elevation of that portion of the carding engine to which the
doffing comb" is applied, shewing particularly the slotted tail piece or quad-
rant for the adjustment of the motion of the doffing comb; this Figure also
shews the method of driving the eccentric by band and pulley. Fig. 2 is a
front elevation of the same; and Fig. 3 is a plan view of the same.
In Fig. 1, a, a, is the framing of that portion of the carding engine where
the "doffing cylinder b is applied to strip the cotton from the main carding
cylinder c by means of the "doffing comb" d, which is fixed upon the comb
shaft e, and a rocking motion is conveyed thereto by means of the crank,
eccentric, or cam f, and connecting rod g, such combination of apparatus being
well known. Upon the comb shaft e the "tail piece" or slotted quadrant h
is secured, and the pin or stud i of the connecting rod 9 is secured in the slot
at any point of its length by means of a screw nut. The adjustment of this
piece (nearer or further from the comb shaft) may also be effected by rack and
pinion, or by causing the pin to work in a screw on the tail piece instead of
in the slot, or other suitable and equivalent means, the chief feature in the
Invention being the adjustment of the said pin in order to lengthen or shorten
the leverage of the tail piece, and consequently the curvilinear course of the
"comb," according to the length of "sweep" or "strip" it is required to effect
on the "doffing cylinder." I would also remark that the connection between
the cam and the connecting rod may be made adjustable for the same purpose.
The eccentric is actuated from the carrier pulley k by means of the strap 7.
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

page_text: understood that I claim regulating the curvilinear course or length of "strip'
performed by the "doffing comb" by making the connection between the
comb shaft and the connecting rod or cam adjustable, as herein-before
described, set forth, and fully illustrated in the Drawings attached.
In witness whereof, I, the said John Brown, have hereunto set my hand
and seal, this Nineteenth day of March, in the year of our Lord One
thousand eight hundred and sixty-three.