IMPROVEMENTS IN CARDING ENGINES FOR THE MORE SPEEDY AND EFFECTUAL DOPPING OR STRIPPING OF THE COTTON, WOOLLEN, SILK, OR OTHER FIBROUS SUBSTANCES THEREFROM
Year: 1856

page_text: LETTERS PATENT to John Goddard, of No. 29, Moss Row, Bagslate, near
Rochdale, in the County of Lancaster, Cotton Carder, and Georgo
Hulme, No. 4, George Street, Rochdale, Machine Maker, for the
Invention of "IMPROVEMENTS IN CARDING ENGINES FOR THE MORE SPEEDY
AND EFFECTUAL DOPPING OR STRIPPING OF THE COTTON, WOOLLEN, SILK, OR
OTHER FIBROUS SUBSTANCES THEREFROM."
Sealed the 4th November 1856, and dated the 14th August 1856.
PROVISIONAL SPECIFICATION left by the said John Goddard and George.
Hulme at the Office of the Commissioners of Patents, with their Petition,
on the 14th August 1856.
We, JOHN GODDARD, No. 29, Moss Row, Bagslate, near Rochdale, in the
County of Lancaster, Cotton Carder, and GEORGE HULME, No. 4, George
Street, Rochdale, Machine Maker, do hereby declare the nature of the said
Invention of "IMPROVEMENTS IN CARDING ENGINES FOR THE MORE SPEEDY AND
EFFECTUAL DOPPING OR STRIPPING OF THE COTTON, WOOLLEN, SILK, OR OTHER FIBROUS
SUBSTANCES THEREFROM," to be as follows:-
This Invention consists in adapting to carding engines a doffer of novel and
improved construction, and in substituting in lieu of the ordinary doffers a

page_text: doffer of the following construction, that is to say, instead of employing
a doffer bar connected by its ends to side rods or legs and spring rods or
crank arms of flexible wood connected with the driving gear of the engine,
we propose to connect the doffer bar to a vibrating shaft extending across
the face of the cards of the carding cylinder, and to connect the said bar
thereto by short arms placed at suitable distances asunder to prevent springing
of said shaft. One end of this shaft is connected with the driving gear of the
engine, so as to move at a suitable speed, and the other end of said shaft is
connected by a short crank arm to the upper end of a vertical rod, the lower
end whereof is connected by a pin or stud to a slot in a disc wheel, the axis
whereof is a pin or stud fixed to the side framing of the machine. Upon
those parts of the aforesaid doffer shaft which extend beyond each end of the
carding clylinder, an arm is fixed, and carries at its extremity and at the side
thereof a brush, which is in contact with the sides of the cards at each end
of the cylinder, so that as the doffer shaft vibrates for effecting the doffing or
stripping of the wool, &c. from the teeth of the cards, in like manner the
aforesaid brushes at each end of the cylinder will prevent accumulation of the
material at those parts.
An important feature in these improvements consists in being enabled to
adjust, by means of set screws or other convenient means, the comb of the
doffer bar to the greatest nicety, without touching the teeth of the cards of
the of the carding engine, thereby preventing wear and tear of the cards, and
consequently effecting a great saving thereof, as well as producing a more
uniform texture of the web, and being able to work at a greater speed without
vibration of the doffer bar, an objection at present attendant upon doffers as
heretofore constructed and employed in carding engines used for carding
woollen, cotton, silk, and other fibrous substances.