Improvements in or Applicable to Bobbin Frames for Looms Used in Weaving Carpets and other Fabrics.
Year: 1889

page_text: Date of Application, 6th Apr., 1889
Complete Specification Left, 16th July, 1889-Accepted, 17th Aug., 1889
PROVISIONAL SPECIFICATION.
Improvements in or Applicable to Bobbin Frames for Looms Used
in Weaving Carpets and other Fabrics.
We, ARTHUR WHITTALL and GEORGE MATTHlas Whittall, of Stour-Vale Mills,
Kidderminster, Worcestershire, Carpet Manufacturers, do hereby declare the nature
of the said invention to be as follows:-
This Invention relates to an improved tension device for bobbin frames used in
looms for weaving carpets and other fabrics.
The especial object of such devices is to keep the yarn in continuous tension
sufficient to prevent waste thereof by its being drawn too freely into the fabric.
The tension has been hitherto imparted by a weight having but a single frictional
surface bearing upon the yarn and being supported thereby between the bobbin and
a wire over which the yarn is passed and from which it passes to the loom, or
between parallel wires over which the yarn is passed and froin the second of which
it passes to the loom; but in such arrangements it is not practically possible to apply
a weight sufficient to keep the yarn stretched to its full extent so as to avoid all
puckering and waste of the yarn in the fabric and so as to allow of only the quantity
of yarn which can be usefully employed being drawn into the fabric, as any
materially greater weight than that usually applied (which is quite insufficient to
keep the yarn thus stretched) would cause the bobbin to run down.
The present Invention consists essentially of a duplex tension weight formed with
two separate frictional surfaces adapted to rest on the yarn on each side of an
intermediate frictional surface supported by the bobbin frame and adapted to support
the yarn and by which means the yarn is doubled over such intermediary part and
is weighed down equally on each side thereof thus affording a triple frictional
resistance to the passage of the yarn of such a nature as will be effective in allowing
of the weight used being sufficient to attain the aforesaid object without causing the
bobbin to run down.
I prefer to construct the duplex weight of a bifurcated formation with the opposite
limbs slotted thus forming the two said separate frictional surfaces adapted to rest
on the yarn; as such formation permits of the weight being most readily applied to
and removed from the yarn, and is also instrumental in attaining other important
advantages, that is to say, in permitting of the weight being localized between
adjacent bobbins and prevented from being swung into contact therewith by the
jerking of the yarn caused by the operation of the loom, by means of a transverse
wire, and in preventing the weight from falling onto the yarn in the frame next
below should its supporting yarn break, by means of a second wire which constitutes
the said intermediate frictional surface adapted to support the yarn between the said
frictional surfaces of the weight.
The yarn is passed from the bobbin through the opposite slots of the weight,
which is then lowered on to the said second wire, which catches the yarn offering
a frictional resistance to the passage thereof in addition to the separate downwardly
bearing frictional resistance offered by the weight, and in addition to that offered
by the usual guiding wire, with which the lowering of the weight causes the yarn
to be drawn into contact.
In lieu of the opposite side parts of the weight being connected above the said
second wire, they may be open above such wire and connected between the said
second wire and the wire below it in such a manner, as that the latter wire may
serve both for preventing all swaying movement of the weight and the falling

page_text: thereof should the yarn break, or the duplex weight may be made with an open top
and without being slotted at the bottom so as to co-act only with the said second
wire and with the said usual guiding wire.
Dated this 6th day of April 1889.
DAY, DAVIES & HUNT,
321, High Holborn, London, W.C., Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in or Applicable to Bobbin Frames for Looms Used
in Weaving Carpets and other Fabrics.
We, ARTHUR WHITTALL and GEORGE MATTHIAS WHITTALL, of Stour-Vale. Mills,
Kidderminster, Worcestershire, Carpet Manufacturers, do hereby declare the nature
of our said Invention and in what manner the same is to be performed to be
particularly described and ascertained in and by the following statement:-
This Invention relates to an improved tension device for bobbin frames used in
looms for weaving carpets and other fabrics.
The especial object of such devices is to keep the yarn in continuous tension
sufficient to prevent waste thereof by its being drawn too freely into the fabric.
The tension has been hitherto imparted by a weight having but a single
frictional surface bearing upon the yarn and being supported thereby between
the bobbin and a wire over which the yarn is passed and from which it passes
to the loom, or between parallel wires over which the yarn is passed and from
the second of which it passes to the loom; but in such arrangements it is not
practically possible to apply a weight sufficient to keep the yarn stretched to
its full extent so as to avoid all puckering and waste of the yarn in the fabric and
so as to allow of only the quantity of yarn which can be usefully employed being
drawn into the fabric, as any materially greater weight than that usually applied
(which is quite insufficient to keep the yarn thus stretched) would cause the bobbin
to run down.
The present Invention consists essentially of a duplex tension weight formed with two
separate frictional surfaces adapted to rest on the yarn one on each side of an intermediate
frictional surface supported by the bobbin frame and adapted to support the yarn
and by which means the yarn is doubled over such intermediary part and is weighed
down equally on each side thereof thus affording a triple frictional resistance to the
passage of the yarn of such a naturo as will be effective in allowing of the weight
used being sufficient to attain the aforesaid object without causing the bobbin to run
down.
On the accompanying drawings.
Fig. 1. represents a sectional elevation of a bobbin frame adapted with the present
improvements.
Fig. 2. represents a transverse section of Fig. 1. through the line, a, b.
3. represents the duplex weight which I prefer to construct of a bifurcated
formation, vide Fig. 1. with the opposite limbs slotted, as at, 4, vide Fig. 2. thus
forming the two said separate frictional surfaces adapted to rest on the yarn; as the
formation represented permits of the weight being most readily applied to and
removed from the yarn, and is also instrumental in attaining other important
advantages, that is to say, in permitting of the weight being localized between
adjacent bobbins and prevented from being swung into contact therewith by the
jerking of the yarn caused by the operation of the loom, by means of a transverse
wire, 5, and in preventing the weight from falling onto the yarn in the frame next
below should its supporting yarn break, by means of the wire, 6, which constitutes
the said intermediate frictional surface adapted to support the yarn between the said
frictional surfaces of the weight.

page_text: The yarn, 7, is passed from the bobbin, S, through the opposite slots, 4, of the
weight, which is then lowered on to the wire, 6, which catches the yarn offering a
frictional resistance to the passage thereof in addition to the separate downwardly
bearing frictional resistances offered by the weight, and in addition to that offered
by the wire, 9, with which the lowering of the weight causes the yarn to be drawn
into contact.
When the loom is in operation the drawing forward of the yarn causes the weight
to assume a position approximating that shown at, c, and varying with the intermittent
motion of the loom but maintaining the tension constant.
In lieu of the opposite side parts of the weight being connected above the wire, 6,
they may be open above the wire and connected between the wires, 6, and, 5, in
such a manner as that the wire, 5, may serve both for preventing all swaying
movement of the weight and the falling thereof should the yarn break, or the duplex
weight may be made with an open top and without being slotted at the bottom so
as to co-act only with the wires, 6, and, 9.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is.
1. In combination with a bobbin frame used in looms for weaving, a tension device
formed with two separate downwardly bearing frictional surfaces adapted to rest on
the yarn in combination with an intermediate wire or frictional surface supported
by the bobbin frame and adapted to support the yarn, as herein set forth.
2. In combination with a bobbin frame used in looms for weaving, a tension
device formed with two separate downwardly bearing frictional surfaces adapted to
rest on the yarn in combination with an intermediate wire or frictional surface
supported by the bobbin frame and adapted to support the yarn and with a guiding
wire, 5, as herein set forth.
3. In combination with a bobbin frame used in looms for weaving, a tension
devico formed with two separate downwardly bearing frictional surfaces adapted to
rest on the yarn in combination with an intermediate wire or frictional surface
supported by the bobbin frame and adapted to support the yarn and with an auxiliary
supporting wire, 9, as herein set forth.
4. In combination with a bobbin frame used in looms for weaving, a tension
device formed with two separate downwardly bearing frictional surfaces adapted to
rest on the yarn in combination with an intermediate wire .or frictional surface
supported by the bobbin frame and adapted to support the yarn, and with a guiding
wire, 5, and with an auxiliary supporting wire, 9, as herein set forth.
Dated this 13th day of July 1889.
DAY, DAVIES & HUNT,
321, High Holborn, London, W.C., Agents for the Applicants.