IMPROVEMENTS IN MACHINERY OR APPARATUS FOR CARDING WOOL OR OTHER FIBROUS SUBSTANCES
Year: 1870

page_text: LETTERS PATENT to Alfred Dyson, of the Firm of Joseph Dyson and
Sons, of Huddersfield, in the County of York, Woollen Manu-
facturers, for the Invention of "IMPROVEMENTS IN MACHINERY OR
APPARATUS FOR CARDING WOOL OR OTHER FIBROUS SUBSTANCES.”
Sealed the 26th May 1871, and dated the 29th- November 1870.
PROVISIONAL SPECIFICATION left by the said Alfred Dyson, at the
Office of the Commissioners of Patents, with his Petition, on the
29th November 1870..
I, ALFRED DYSON, of the Firm of Joseph Dyson and Sons, of Hud-
dersfield, in the County of York, Woollen Manufacturers, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN MACHINERY
OE APPARATUS FOR CARDING WOOL OR OTHER FIBROUS SUBSTANCES," to be as
follows:-
This Invention relates to the " 'fly doffer" or the comb usually
employed for doffing the carded fibre from the doffer cylinder of carding
engines. Heretofore in the practical operation of these "fly doffers"
the cards on the said cylinder are damaged by the return stroke or back

page_text: action or motion of the said doffer or comb. Now to prevent this
damage I mount the rocking shaft which carries the said "fly doffer "
in slides or slidable bearings upon the frame of the carding engine, and
I apply a rotary shaft, either behind the aforesaid shaft or in some other
convenient position, carrying an eccentric or cam at each end to operate i
the slide bearings at such times as that when the fly comb has made its
stroke down to remove the fibre from the cards, it is then drawn away
from the surface of the doffer cylinder, the comb being thereby free to
return clear of the cards, and thus prevent damage thereto.
.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
✓ filed by the said Alfred Dyson in the Great Seal Patent Office on
the 27th May 1871.
•
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ALFRED
DYSON, of the Firm of Joseph Dyson, and Sons, of Huddersfield, in the
County of York, Woollen Manufacturers, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-ninth day of November, in the
year of our Lord One thousand eight hundred and seventy, in the
thirty-fourth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Alfred Dyson, Her special
licence that I, the said Alfred Dyson, my executors, administrators,
and assigns, or such others as I, the said Alfred Dyson, my execu-
tors, 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 OR APPARATUS FOR CARDING WOOL OR OTHER FIBROUS SUBSTANCES,"
upon the condition (amongst others) that I, the said Alfred Dyson, 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, und 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 Alfred Dyson, do hereby declare
the nature of my 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 Sheet of Drawings (that is
to say) :—
.
'
This Invention relates to the "fly doffer" or the comb usually
employed for doffing the carded fibre from the doffer cylinder of carding
engines. Heretofore in the practical operation of these "fly doffers"
the cards on tho said cylinder are damaged by the return stroke or back
action or motion of the said doffer or comb. Now to prevent this
damage I mount the rocking shaft which carries the said "fly, doffer"
in slides or slidable or moveable bearings upon the frame of the carding
engine, and I apply a rotary shaft, either behind the aforesaid shaft or in
some other convenient position, carrying an eccentric or cam at each end
to operate the slide or moveable bearings at such times as that when the
fly comb has made its stroke down to remove the fibre from the cards, it
is then drawn away from the surface of the doffer cylinder, the comb
being thereby free to return clear of the cards, and thus prevent damage

page_text: of the rod or link L, one end working loosely on the end of the shaft H,
which is formed eccentric to the main part of the said shaft, and the
other on a stud fixed in the lever arm M, which is fixed on the said
rocking shaft. These eccentrics are so arranged relatively that when the
doffing comb is making its down stroke it is pushed forward towards the t
doffer cylinder, and on the up stroke of the said comb it is drawn
slightly away from the said cylinder, as will be readily seen by reference
to the Drawings, and thereby damage to the cards by the back stroke of
the comb is prevented or avoided..
In witness whereof, I, the said Alfred Dyson, have hereunto set 1
my hand and seal, this Twenty-sixth day of May, in the year of
our Lord One thousand eight hundred and seventy-one.
Signed, sealed, and delivered by.
the within-named Alfred Dyson,,
in the presence of
WM. TASKER,
Patent Agent,
ALFRED DYSON. (L.S.)
Halifax & Bradford,