IMPROVEMENTS IN DOUBLING AND TWISTING. MACHINES to be as follows
Year: 1884

page_text: I PAUL HEBBELYNCK of Gand in the Kingdom of Belgium do hereby declare
the nature of the said Invention for "IMPROVEMENTS IN DOUBLING AND TWISTING.
MACHINES to be as follows :—
"
The improvements referred to are intended to prevent waste by breakage of
the threads whilst doubling and twisting.
The main features of novelty being the substitution for the delivery cylinder, of
a light grooved pulley, revolving on an axis and being of such a diameter as to
present a large surface of contact to the thread, so obviating the employment of a
pressing cylinder.
The thread in its passage to the grooved pulley is held in tension by the
successive organs over which it passes, namely, a double hook of copper fixed to a
wooden beam covered with cloth, which rises in the rear to regulate the tension,
next to a glass rod, then to a tube or copper ring, which keeps the thread under
water, then to a second glass rod, passing on to a glass hook and from thence to the
pulley, having passed which it is taken by a sliding pieco and is then wound on a
bobbin in the usual manner.
A certain tension is thus exercised on the spindle side of the apparatus in front
of the pulley, the thread being pressed into the groove by the sliding piece below
it, and establishing a firm contact at this point so that a regular and uniform
delivery is effected without the aid of the delivering or pressing cylinders, the
pulley always revolving at a speed in uniformity with that of the spindles.
If a thread should break, the pressure of the slide beneath the groove of the
pulley becomes nil, the tension in its rear remaining, drawing of the thread ceases
notwithstanding that the pulley continues to revolve.
By this principle of construction no waste is occasioned.
By this method of regulating tension, should a thread break the machine would
stop without the aid of tapping machines with automatic stops as generally
employed.

page_text: I PAUL HEBBELYNCK of Gand in the Kingdom of Belgium, Manufacturer, do
hereby declare the nature of said invention for LMPROVEMENTS IN DOUBLING AND
TWISTING MACHINES and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:-
In ordinary doubling and twisting machines the threads to be operated upon, are
delivered at a uniform velocity to be twisted by passing between a roller or
cylinder, positively driven and a weight, roller or cylinder resting upon and rotating
by contact with the positively driven roller or cylinder.
My invention consists in dispensing with the weight roller or cylinder, and
substituting for the positively driven roller or cylinder; pulleys, or a cylinder or
roller, of larger diameter, on a shaft positively driven, and in arranging a friction
drag or tension upon the threads to be operated upon, before they arrive at the
pulley, roller, or cylinder, so as to give as much adhesion upon the surface of the
pulley, or roller or cylinder, as will prevent the threads from being drawn forward,
by the drag of the twisting arrangements, except at the velocity of the periphery
of the pulley, or roller, or cylinder, over which the threads pass-The friction
arrangement or arrangements for putting tension upon the threads are formed in
any convenient manner and are placed in any convenient position or positions
between the creel containing the cops or bobbins from which the threads to be
operated upon, are drawn, and the pulley or roller over which they are to pass, and
by which they are delivered to be twisted.
I prefer that the frictional arrangement shall be such that it can be altered to
increase or decrease and thus regulate the amount of tension.
With my improvements, above described, the pulley or roller ceases to deliver
the threads the moment they break, as then there is no longer the tension, to give
the required adhesion of the threads to the pulley or roller to cause it to deliver
the threads.
In some cases, I arrange two of the guides or eyes through which the threads
pass in a part which can swivel freely on a vertical axis, the threads passing through
one guide or eye before arriving at, and through the other guide or eye after passing
from the grooved pulley, and as these guides or eyes are on opposite sides of the
fulcrum or axis of the piece carrying them, the tension or strain of the threads
when they are present, upon both guides is equal and balanced and keeps the guides
and thus the threads in a line with the groove of the pulley, but if the threads
break between the twisting arrangement and the pulley, the tension or strain upon
the guides becomes unbalanced and the part carrying the guides swivels partly
round so as to guide the threads passing to the groove of the pulley from it and
on to a shield placed over the shaft and between the grooved pulleys; and thus
prevents the threads which might get off the pulley from winding upon the shaft
between them.
By my invention the mechanism is simplified and a saving in waste is effected
and if desired in some cases the preliminary process of doubling and winding in a
separate machine is dispensed with.
Fig 1 is a sectional elevation illustrating one mode of carrying my invention
into effect.
The creel for the cops or bobbins from which the threads to be operated upon

page_text: are to be drawn, are of any ordinary and convenient arrangement adapted to the
machine and purpose to which my invention is to be applied.
a represent the cops from which the threads to be twisted are drawn, and from
which they pass under a book curl or guide b of any suitable material and shape
secured in a rail b¹.
The threads then pass from the guide b, over a board c covered with flannel or
other suitable material, which board is or may be hinged at or near d so as to be
adjusted to give more or less angle to the board c and thus increased or decreased
friction to the passing threads. The threads then pass over a glass rod d, and for
"wet doubling" as it is termed, pass under a glass hook or rod e submerged in a
water trough, then over a glass rod f, under a hook g, over a pulley h on a shaft h¹
positively driven at the required speed (edge view of which pulley is shown by
fig 2) then the threads pass from the pulley h through a glass or other hook i in a
rail against the glass rod edge or other guide of the thread board to the traveller k
and then on to the bobbin in ring doubling or twisting frames, or the threads
pass to the flyer or other twisting arrangement of other twisting machines.
Fig 3 is an edge and fig 4 a front elevation and fig 5 a plan illustrating a
modification of my invention showing a swivel part for carrying the curls or hooks
for the thread.
In this modification the threads pass from the creel and through any suitable
tension arrangement in or about the line x (figs 3 and 5) then through the eye or
curl then over the groove in the pulley h and then into the other eye or curl i
and from the latter to the threal board ; and then to the traveller or other twisting
arrangement.
When the threads are present the part m carrying the thread guides is in the
position shown in full line in fig 5 but when the threads break between the spindle
and delivery pulley the tension on that side of the pulley ceases and the tension
or strain upon the swivel part m which turns on the pivot m¹ becomes unbalanced
as the tension or strain upon the threads going to the pulley h swings the part m
into the position shown by dotted line in tig 5 where the threads will be guided
out of the groove in the pulley on to the stationary shield n carried on a stem n
between the pulleys.
Fig 6 illustrates another arrangement for guiding the threads round the pulley h
or round a roller or cylinder.
The threads in this case come or may come from the creel and tension arrange-
ment in the direction of the line and pass under the hook g in a rod in front
under the pulley or roller h and then to the hook i from which they pass to the
twisting arrangement.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
In machines for doubling and twisting yarns or threads the delivery of the
threads at a uniform velocity to be twisted, by passing them over and in contact
with the periphery of a pulley, roller or cylinder, combined with any suitable
arrangement for putting friction or tension upon the threads before they arrive at
the pulley, roller or cylinder, to give them adhesion thereto when the drag of the
twisting arrangement is acting on the threads, substantially as and for the purpose
berein before described and illustrated by the drawings.