Improvements in or relating to Tentering Machinery and the like.
Year: 1895

page_text: Date of Application, 18th May, 1895
Complete Specification Left, 13th Jan., 1896-Accepted, 2nd May, 1896
PROVISIONAL SPECIFICATION.
Improvements in or relating to Tentering Machinery and
the like.
I, ALPHONSE CÔTE of Tarare in the Department of the Rhône Republic of
France Embroidery Manufacturer do hereby declare the nature of this invention
to be as follows:-
This invention relates to tentering machines or the like in which woven or other
fabrics are attached by their edges to tentering chains and especially to endless
chains to which different motions may be given to stretch or work the fabric
diagonally and otherwise. The purpose of the improvements is to facilitate the
action of such machinery, and their principle essentially consists in making a part
of each said chain, or supple band of any kind employed in place of the chain,
more or less independent in its movements of the remainder of the chain or band
or of the tentering frame generaily, by arranging the course of the said chains or
bands so that a part or parts of the course is or are bent or curved or folded or
made in some other broken manner, so that to such part which may be called the
stretching portion, there may be given such oscillatory movements or displacements
as shall stretch the weft obliquely in the one or other direction to give a more or
less energetic stretching to the fabric as it passes along this part of the course
without retarding or preventing in any way the general advancing or feeding
movements of the chains or tentering bands which movements remain continuous
and simultaneous.
Thus if the cloth travelling in a plane is deflected from that plane and carried
into a plane parallel to the first whence it returns again to the first plane after
having pursued a desired length of course in the said parallel plane, and if the
chains as they pass along the parallel plane are so guided that the one lies in
advance of the other along that plane by guiding it more or less obliquely into
and from that plane, the cloth which travelled in the previous plane with its weft
perpendicular to its side edges, will during its passage along the parallel plane be
stretched obliquely so that its weft lies obliquely according to the amount by which
the one chain is in advance of the other. On its return to the first plane it returns
to its first position, having thus been automatically stretched in one direction by
the stretching section. To stretch it obliquely in the other direction it is only
necessary to pass it over or along a similar section in which the two tentering
chains are guided so that the chain which was in advance in the previous section
is now in arrears and the other previously in arrears is now in advance.
These tentering or stretching sections may have their chain rollers or pulleys
fixed or movable, and may be repeated to any number in the frame and situated at
any part of the general course of the tentering chains or the like.
Dated this 18th day of May 1895.
HERBERT HADDAN & Co.,
Agents to Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in or relating to Tentering Machinery and
the like.
I, ALPHONSE CÔTE, of Tarare in the Department of the Rhône, Republic of
France, Embroidery Manufacturer, 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:-
'This invention relates to tentering machines or the like in which woven or other
fabrics are attached by their edges to tentering chains and especially to endless
chains to which different motions may be given to stretch or work the fabric
diagonally and otherwise. The purpose of the improvements is to facilitate the
action of such machinery and their principle essentially consists in making a part
of each said chain, or supple band of any kind employed in place of the chain,
more or less independent in its movements of the remainder of the chain or band
or of the tentering frame generally, by arranging the course of the said chains or
bands so that a part or parts of the course is or are bent or curved or folded or
made in some other broken manner, so that to such part, which may be called the
stretching portion, there may be given such oscillatory movements or displacements
as shall stretch the weft obliquely in the one or other direction to give a more
or less energetic stretching to the fabric as it passes along this part of the course
without retarding or preventing in any way the general advancing or feeding
movements of the chains or tentering bands which movements remain coutinuous
and simultaneous.
Thus if the cloth travelling in a plane is deflected from that plane and carried
into a plane parallel to the first whence it returns again to the first plane after
having pursued a desired length of course in the said parallel plane, and if the
chains as they pass along the parallel plane are so guided that the one lies in
advance of the other along that plane by guiding it more or less obliquely into and
from that plane, the cloth which travelled in the previous plane with its weft
perpendicular to its side edges, will during its passage along the parallel plane be
stretched obliquely so that its weft lies obliquely according to the amount by which
the one chain is in advance of the other. On its return to the first plane it returns
to its first position, having thus been automatically stretched in one direction by
the stretching section. To stretch it obliquely in the other direction it is only
necessary to pass it over or along a similar section in which the two tentering
chains are guided so that the chain which was in advance in the previous section
is now in arrears and the other previously in arrears is now in advance, or it may
be stretch obliquely in both directions on one and the same tentering section as
hereinafter described.
These tentering or stretching sections may have their chain rollers or pulleys
fixed or movable, and may be repeated to any number in the frame and situated at
any part of the general course of the tentering chains or the like.
This invention is illustrated in the annexed drawing.
Fig. 1 is an elevation of such a machine the upper-lying bands being displaced
as in oblique stretching.
Fig. 2 is a horizontal plan, the bands being evenly placed opposite each other.
The same letters of reference indicate the same parts in the two figures.
A is the frame-work supporting the whole. A¹, A", B₁, B", C¹, C"; D', D",
E¹, E, F, F, are wheels around which the tentering chains pass.
C represents the tentering chains with clamps or pins to retain the fabric guided
by wheels or rollers of appropriate form; in the straight parts these chains slide
or roll in or upon guides conveniently arranged to permit them to comply with all
displacements, oscillations, torsions or inclinations to which they are submitted,

page_text: while permitting their movements of progression to be simultaneously performed
in a continuous and independent manner.
B are vertical arms pivoted upon a block c the latter revolving upon a trunnion t.
b, b, represent two upper bars which are kept pressed apart by means of the
sliding tubes t' provided with springs and one of which connects the ends of the
bars B, B, on one side of the machine, while the other lies parallel to the first and
connects the ends of the bars B, B, on the other side of the machine. The springs
applied to tubes may be replaced by pistons driven by compressed air. The two
slotted bars c limit the maximum separation of the bars b, b, which are in the
position of maximum separation only when the upright arms B are in the vertical
position.
Bars a and b and the sliding bars c¹ maintain the parallelism of the bars b, b, in
the operation of tentering. P represents the driving belt for operating the machine.
Q is an intermediary shaft receiving movement from gear-wheels 2, 1. Upon this
shaft Qat the extremity is the pulley 3 geared by belt with the pulley 4, driving
through pinion and gear-wheel 5 the shaft of wheels F¹, F".
Upon the shaft is also a conical pinion 6 moving the shaft 7 upon which is
keyed an eccentric 8. This eccentric 8 rocks the shaft 9 by means of a sector 10,
a connecting rod 11, toothed rack 12 and pinion 13, the latter keyed upon the
shaft 9. The shaft 9 carries at the upper end the arm with connecting rods
joined to the upper bars b, b. The wheels F¹, F", drive the tentering chains C, C,
and the wheels A¹, A", moving therewith drive the pulley 14 transferring the
movement to the pulley 15 upon the axle of which is the roller 16 for rolling up
the finished fabric. 17 represents rollers upon and under which passes the fabric.
18 are rods carrying independent disks as at the left of Figs. 1 & 2 or a movable
roller as shown on the right of said figures to guide the fabric and to keep the
same longitudinal tension for the centre as for the edges of the fabric in the upper
part of the machine. They may be mounted in any suitable way so as to swing
horizontally with the movement of the cloth.
The fabric entering at the left, passes flatly and evenly to wheels A¹, B', A", B¹¹,
undergoes an effect of torsion between wheels B₁, C₁, B, C, then passes to the
upper part between wheels C, D, C, D, and there it will be seen that any point
of the edge between C, D, is in advance of the corresponding point of the
edge between C¹, D¹.
The warp remains always parallel to the axis, but the weft is drawn obliquely
and does not cross the warp at right angles.
The fabric continuing to advance undergoes a new effect of torsion in reverse
direction in the part between wheels D', E, D, E, then becomes straight again
during the rest of its course and is rolled up upon the roller 16 on leaving the
tentering chains.
The bars being operated with a rectilinear reciprocating movement by the gear
aforesaid which oscillates the bar and giving in the necessary degree towards
each other under tension of springs on the rods t', such movement being permitted
by the universal joints of the bars B formed by the construction of parts c and t,
the fabric is obliquely stretched in each direction as many times as required.
It is understood that there may be any number of movable tentering sections
upon the length of the same framework and that they might be moved together
or separately in the same or in the reverse directions.
This tentering section can also be joined to the end of a drying frame either in
the interior or at the exterior of a drying chamber.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is;-
1. The improvements in continuous stretching or tentering machines, consisting
in rendering more or less independent a part of the tentering chains or bands by
causing them to follow a looped, folded or broken course, transferring a part of the

page_text: fabric into a different plane from the remainder and forming a tentering and
stretching section in which part of the tentering chains or bands may follow all
the movements, displacements or oscillations for producing double oblique stretching
without preventing the continuous and simultaneous progression of the fabric.
2. The formation of such tentering section upon or by oscillatory bars such
as B, B, inclining in opposite sense placed on each side of the machine, the said
bars being endowed with an advancing and retiring movement involving the
horizontal parts placed in the upper plane, to which they are united to give a
proportional oblique stretching, the fabric passing over said section and afterwards
straightening again on a lower plane where the fabric continuing its course,
finishes its drying.
3. The improvements in tentering machinery substantially as herein described
whereby during continuous passage of the fabric, it may be twisted, obliquely
stretched in each direction and returned to a flat condition in which the weft is
perpendicular to the warp substantially as described.
Dated this 13th day of January 1896.
HERBERT HADDAN & Co.,
18, Buckingham Street, Strand, London, W.C.,
Agents to the Applicant.