Improvements in Fancy Yarns and in the Apparatus for the Production thereof.
Year: 1885

page_text: Improvements in Fancy Yarns and in the Apparatus for the
Production thereof.
We JOHN HENRY CRAVEN, of Dalton Mill, Keighley in the County of York
Spinner, and JOHN CRABTREE of the same place Managing Overlooker, do hereby
declare the nature of this invention to be as follows:-
The object of this invention is to arrange ordinary spinning frames in such a
manner that we are enabled to produce for the warp and weft of textile fabrics,
fancy yarns having knops and loops formed on the body. threads.
We accomplish this object in the following manner:-Between the ordinary front
and back rollers is mounted a traversing guide which is moved backwards and
forwards between the said rollers. The ground thread of the fancy yarn is
delivered by the back rollers and passes through a groove cut in the circumference
of one or both of the front rollers thus allowing the twist to run to the back
rollers. Combined with the ground thread is an additional thread which is passed
over or between additional rollers through the traversing guide, and is twisted
around the ground thread between the ordinary front and back rollers.
When the traversing guide moves in the same direction as the ground thread,
the additional thread is twisted around the same in one position thereby forming
a "knop " but on the guide moving in the opposite direction the additional thread
is twisted around the ground thread in a spiral direction until the traversing guide
again travels in the same direction as the ground thread, when another "knop" is
formed on each of the ground threads.
For producing loops on the knopped yarn an extra or manifold thread of yarn is
passed through the front rollers where they are in contact and twisted around the
body threads between the front rollers and spindle. The front rollers are speeded
to deliver more yarn than the back and on twisting the extra yarn on the body
threads loops are formed on the "knopped" yarn by the extra length of yarn
delivered by the front rollers the size and number of loops in any given length is
adjusted by the relative speeds of the front and back rollers.
In order to secure the loops on the body thread we twist another thread around
the looped yarn in an ordinary spinning or twisting frame in which the spindles are
run in the opposite direction to those in the frame for producing the loops.
Dated this 7th day of Donambon 100%

page_text: Improvements in Fancy Yarns and in the Apparatus for the
Production thereof.
We, JOHN HENRY CRAVEN, of Dalton Mill, Keighley, in the County of York,
Spinner, and JOHN CRABTREE, of the same place, Managing Overlooker, do hereby
declare the nature of this invention and in what manner. the same is to be
performed, to be particularly described and ascertained in and by the following
statement:
The object of this invention is to arrange ordinary spinning frames in such a
manner, that we are enabled to produce for the warp and weft of textile fabrics,
fancy yarns, having knops and loops formed on the body threads, and consists in
mounting a traversing guide between the front and back rollers, and cutting a
groove in the circumference of one or both of each pair of front rollers to allow the
twist to run through the groove to the back rollers, for twisting an additional
thread conducted between or over additional rollers to the traversing guide, which
when moving in the same direction as the ground thread, allows the additional
thread to be twisted and form a knop thereon, but on the guide moving in the
opposite direction, the additional thread is twisted around the ground thread in a
spiral direction until the guide again moves towards the front rollers.
For producing loops on the knopped yarn, an extra or manifold thread of yarn
is passed between the front rollers where they are in contact, which are speeded to
deliver more yarn than the back, and on the yarn being twisted on the knopped
body yarn, produces loops, which are secured by twisting another thread around
by a frame of the ordinary construction in which the spindles are run in the
opposite direction.
In order that the invention may be better understood, we will describe the same
more in detail by making reference to the accompanying drawings, in which Fig. 1
represents the front view of a portion of a spinning frame arranged according to
this invention, Fig. 2 an end view of a portion of a frame in which the gearing
for driving the rollers is removed and represented by the circles in Fig. 3 in order
to more clearly shew the invention, Fig. 4 is a detail shewing the tappet for
operating the traversing guide, and Fig. 5 a diagram of combined and looped yarn.
In all the figures similar letters represent similar parts.
In carrying out this invention, we mount the saddles A in a more vertical
position than is the common practice with worsted spinning frames, and between
the front rollers B and B¹ and the back rollers C C is mounted a traversing or
oscillating guide D mounted on a series of levers D¹ secured on shaft E which is
supported by suitable brackets attached to the framework of the machine. On the
shaft E is also secured a lever F to which is attached an anti-friction pulley G
which is in contact and operated by the tappet H attached to the wheel H¹ in gear
with the wheel H² on the top roller shaft R, this shaft by preference, being driven
from the front roller shaft "B" by the wheels J, J', J and J³, the latter being
secured on the 'shaft R, and rotation to the front roller shaft B³ imparted in the
usual manner.

page_text: The supply bobbins are placed on the creel K and each ground thread L in its
transit to the respective spindle S passes between the ordinary back rollers C C
under the guide wires D of the traversing guide, and through a groove B³ cut in
the circumference of one or both of the front rollers, by which yarn is free and the
twist allowed to run from each spindle to the respective back rollers.
'
In order to form the knops O on the ground thread, we combine with the same
an additional thread L' which is passed over or between the top rollers R¹ which
rotate and deliver the quantity required for the size of the knops. The yarn, after
leaving the rollers R¹, passes under guide wire M to the traversing or oscillating
guide D where it joins the body thread, and when the guide is moving in the
direction of the arrow towards the front rollers, it moves at about the same speed
as the ground thread L, thereby guiding the thread L' and allowing it to be
twisted on the ground thread in about the same position, so long as it is moving
in that direction, thereby forming a thick place or knop on the ground thread.
On the reversal in the motion of the guide D, the thread L¹ is twisted around
the ground thread L' in a spiral direction, until the tappet H again operates the
lever F and guide wires D towards the front rollers, when another knop is formed
on each of the ground threads.
For producing loops P on the knopped yarn, an extra or manifold thread of yarn
is passed between each pair of front rollers B and B¹ where they are in contact,
and twisted around the body threads between the front rollers and spindles. The
front rollers are speeded to deliver more yarn than the back rollers C C, and on
twisting the extra yarn on the body threads, loops are formed on the knopped yarn
by the surplus length of yarn delivered by the front rollers B and B¹; the size and
number of loops in any length is adjusted by the relative speeds of the front and
back rollers, and in order to secure the loops thus formed, another thread is twisted
around the looped yarn in an ordinary spinning or twisting frame in which the
spindles are run in the opposite direction to those in the frame for producing the
knops and loops.
In the foregoing portion of the specification, the invention is described as carried
out by spinning frames, but we wish it to be understood, as will be apparent to
persons acquainted with worsted machinery that roving and twisting frames are
also applicable when altered in the same manner as spinning frames, all such
machines being analogous.
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, we declare that what
we claim is,
A new fancy yarn having a single or manifold ground thread on which are
formed knops and loops for the purpose hereinbefore set forth.
The combination of grooved rollers and a traversing or oscillating guide with
the back rollers C C and top rollers R¹ substantially in the manner and for the
purpose set forth.
The grooving of the front rollers of roving, spinning or twisting frames, in the
manner shewn and described.