IMPROVEMENTS IN PIRN OR SPOOL WINDING MACHINERY to be as follows:
Year: 1884

page_text: We, DAVID SYKES of The Turnbridge Iron Works, Huddersfield, Yorkshire,
Machine Maker and WILLIAM MITCHELL of the same place, Manager, do hereby
declare the nature of our invention for "IMPROVEMENTS IN PIRN OR SPOOL
WINDING MACHINERY to be as follows:-
"
This Invention has reference to that. class of winding machinery employed in
winding thread onto spools in a conical form, and which has hitherto been done
by means of the spool rotating in a stationary conical cup. This method of
winding has always been objectionable in consequence of a gloss which is put on
the thread by the frictional contact of the thread in the stationary cup, but when
the thread breaks and the spool is allowed to revolve, the friction is so great as in
many cases to rub and break the thread within the cup.
To avoid friction on the thread is the object of our invention which we effect
by the employment of two convex discs placed loosely on studs fixed in suitable
brackets.
:
The discs are placed on their studs so that the convex surfaces are towards each
other, whereby a conical or taper opening or space is left between the two discs of
the size and shape of the taper cop required to be formed. The spool is driven
positively, in the usual way, with the head uppermost and the point thereof down-
ward, resting on the sides or faces of the convex discs, the surface contact of which
causes the discs to rotate at the same surface speed, consequently all friction on the
thread is avoided. By this means taper pirns or spools may be formed and built
up at any desired angle, whilst friction thereon when rotating is avoided..

page_text: COMPLEIE
DIECIFICATION.
We, DAVID SYKES of the Turnbridge Iron Works, Huddersfield, Yorkshire
Machine Maker and WILLIAM MITCHELL of the same place, Manager do hereby
declare the nature of our invention for "IMPROVEMENTS IN PIRN OR SPOOL
WINDING MACHINERY," and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:―
This invention has reference to that class of winding machinery employed in
winding thread onto spools in a conical form, and which has usually been done by
means of the spool rotating in a stationary conical cup. This method of winding
has always been objectionable in consequence of a gloss which is put on the thread-
by the frictional contact of the thread in the stationary cup, but when the thread
breaks and the spool is allowed to revolve, the friction is so great as in many cases
to rub and break the thread within the cup.
To avoid friction on the thread is the object of our invention which we effect
by the employment of two convex discs placed loosely on studs fixed in suitable
brackets.
Such being the nature and object of our invention we will now proceed to
'describe the same more fully, being aided by the accompanying sheet of drawings
which illustrate our improvements. Fig 1 is front elevation of bobbins and
discs, and Fig 2 is end elevation of same. A and B are two convex discs, running
loosely upon studs C, supported by brackets D, attached to the cross rail E. The
ordinary driving wharle is shewn at F which receives the lower end of the 'spindle G,
the upper end of such spindle carrying the pirn or spool H, all arranged and driven
in the usual manner. I indicates the yarn which passes over tension and guide
rods J, and through the oscillatory guide eye K to the spool onto which it is
wound. It will be seen and understood by those conversant with this description
.of winding machinery, that the convex faces of the discs are parallel with the
conical part of the bobbin, and that as the bobbin rotates the yarn is wound
thereon, layer upon layer until full, the bobbin rising gradually as the cop becomes
Jarger and it will also be seen, that the contact of the cone upon the discs will be
sufficient to cause them to rotate, at exactly the same surface speed, and if the yarn
breaks, or the bobbin gets full and is allowed to rotate, through inattention of the
workman or other causes, that the revolving surfaces at the point of contact are the
same, consequently there is no friction upon the yarn which is a great desideratum
with some classes of yarn.
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
In pirn or spool winding machinery the employment of convex discs running
loosely upon studs, in manner and for purposes herein set forth.