IMPROVEMENTS IN THE MEANS OR APPARATUS FOR IMPARTING MOTION TO THE DOFFER PLATE OF CARDING ENGINES
Year: 1884

page_text: COMPLETE SPECIFICATION.
"
We HENRY WALTON WHITEHEAD of the firm of Taylor Wordsworth and Co
Water Lane, Leeds, Machinists, and JonN WILLIAM GAUNT of Calverly Lane
Bramley Woollen Manufacturer both in the County of York do hereby declare
the nature of our said Invention for IMPROVEMENTS IN THE MEANS OR
APPARATUS FOR IMPARTING MOTION TO THE DOFFER PLATE OF CARDING
ENGINES" and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement:-
This Invention consists in a novel mode of giving an elliptical reciprocating
motion to the doffing plates of carding engines, and for this purpose we provide a
revolving shaft which is mounted across the machine in suitable bearings. At or
near each end of this shaft is fixed an eccentric, which imparts a to and fro motion
to the doffing knife, such motion being transmitted through an arm or lever.
In order to obtain the desired elliptical movement we attach one end of a
connecting rod to each of the above mentioned arms or levers and we couple the
other end of the connecting rods to fixed points on the framework so that whilst
the eccentric imparts the required to and fro movement to the lever carrying the
doffing plate, the connecting rod draws the samo in an elliptical direction.
The movement of the doffing plate may be regulated by adjusting the position
of the connecting rod.
And in order that our Invention may be more clearly understood reference is
given to the accompanying Drawings and to the letters and marks thereon.
Fig. 1 is a front elevation. Fig. 2 is a side elevation and Fig. 3 a sectional plan
of our improved arrangements for imparting motion to the doffing knife of carding
engines.
a is the revolving shaft which is mounted across the machine in bearings b and c
cast on the brackets and n which are attached to the frame of the carding
engine. At or near each end of the shaft a is fixed the eccentric d which imparts
a to and fro motion to the doffing knife o such motion being transmitted through
the arm or lever f. In order to obtain the desired elliptical movement we attach
D

page_text: one end of a connecting rod 7 to each of the above mentioned arms or levers f
and we couple the other ends of 'the connecting rods g to the pins & which can be
fixed in any desired position in the slot . Whilst the eccentric & therefore imparts
a reciprocating motion to the doffing knife e the connecting rods g draw the saine
into an elliptical direction.
By adjusting the position of the ends of the connecting rods g in the slots and
in the bracket n and lever f respectively the elliptical movement of the doffing
knife e can be regulated.
It will be evident that the connecting rod g may be attached to the arm ƒ on the
side nearer the doffing knife as shewn in dotted lines at 1 Fig. 2.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed we declare that what
we claim is:
The lever f, eccentric or cam d, on shaft a, and rod g arranged and combined
substantially as herein set-forth for imparting an elliptical motion to the doffing
knife of carding engines.
DL: M
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A