Improvements in Apparatus Applicable to Tențering Machines for the Stretching of Cloth.
Year: 1890

page_text: Date of Application, 13th Sept., 1890
Complete Specification Left, 15th June, 1891-Accepted, 18th July, 1891
PROVISIONAL SPECIFICATION.
Improvements in Apparatus Applicable to Tențering Machines for
the Stretching of Cloth.
We, JOHN WILLIAM WILLANS SHAW, of the firm of William Shaw and Sons,
of John Street, Rochdale, in the County of Lancaster, Flannel Manufacturers, and
JAMES STOTT, of Rydings Mill, Rochdale, aforesaid, Mill Manager, do hereby
declare the nature of this invention to be as follows:-
:-
This invention relates to certain improvements in the apparatus employed for
the stretching of cloth in a longitudinal direction as it is delivered to a tentering
machine, and has for its object, the arrangement of the mechanism in such a manner
that, the delivery motion is positive. and so constructed that, the operator can
adjust the apparatus so as to deliver the fabric at such speed and tension, that it
is stretched uniformly throughout the piece and the desired length of piece
obtained, and with little liability of the fabric being severed by the same being
unduly held as is sometimes the case when the tension on the fabric is applied in
the manner as hitherto in common practice.
We accomplish our object in the following manner. To one of the chain pullies
of a tentering machine, or to a rotating shaft by preference geared therewith, we
attach a toothed wheel which gears with another keyed on a shaft and so arranged
that, it may be moved thereon when adjusting the chain pullies to the distance
apart required by the width of the piece; on this shaft is another wheel which
operates through a train of gearing a measuring drum around which the cloth to
be stretched and tentered is made to pass.
The cloth passes over a pressure roller in contact with the circumference of
the measuring drum, around which it also passes, and is delivered over a suitable
roller or rollers or over a slay to the pins on the pitch chains of the tentering
machine.
By passing the cloth over the pressure roller and measuring drum in the manner
described, and regulating the speed of the latter in relation to the speed of the
pitch chains, a positive and uniform delivery is obtained, thus giving an even tension
throughout the length of the fabric, with little liability of the fabric being unduly
held by the frictional contact between the circumference of the measuring drum
and pressure roller, the fabric being delivered by the measuring drum regularly and
proportionately in relation to the speed of the pitch chains.
Do this 10th day of Sontember 1890
JOHN WAUGH,
Agent.
COMPLETE SPECIFICATION.
Improvements in Apparatus Applicable to Tentering Machines for
the Stretching of Cloth.
We, JOHN WILLIAM WILLANS SHAW, of the firm of William Shaw and Sons,
of John Street, Rochdale, in the County of Lancaster, Flannel Manufacturers, and
JAMES STOTT, of Rydings Mill, Rochdale aforesaid, Mill Manager 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 certain improvements in apparatus employed for the

page_text: stretching of cloth in a longitudinal direction as it is delivered to a tentering
machine, or to a drying and stretching machine, and has for its object, the
arrangement of the mechanism in such a manner that, the motion controlling the
delivery of cloth to the machine is positive and so constructed that, the operator
can adjust the apparatus so as to deliver the fabric at such a rate of speed and
tension that, it is stretched uniformly throughout the piece and the desired length
obtained, with little liability of the fabric being severed, or otherwise damaged by
the same being unduly held as is sometimes the case when the tension on the fabric
is applied in the manner as hitherto in common practice.
In the accompanying drawings
Fig. 1 represents the side elevation of such portions of the feeding end of a
tentering and stretching machine, as are required to explain our invention which
is added thereto.
Fig. 2 is a plan thereof and Fig. 3 a section of same through line a. b.
The side plates A are regulated as regards distance between them by a series
of screws S. and along with the chain pullies B and chains C. are of the ordinary
description and form no part of our invention..
To one of the chain pullies B is attached a spur wheel D. in such a manner as
to revolve therewith on the same shaft, which by preference is non-rotating: and
gearing with the said spur wheel D. is another wheel E. mounted on a shaft F.
supported by journals G and G¹, the latter of which is secured to a bracket on
one of the side frames W of the feeding head, and the former attached to and
supported by a bracket extension of one of the side plates A. in such a manner
that, it can move thereon to such an extent, as may be required for the adjustment
of the side plates A. to the varying widths of cloth to be stretched.
The shaft F is prepared with a slotted, or long key way H. into which a feather
key of wheel E fits, in such a manner that, the wheel can slide on the said shaft
and is kept in the relative position with the side frame A and in gear with the
wheel D. by a compound link, one portion J being secured by screw K to the non-
rotating shaft on which the chain pulley B and spur wheel D rotate, the other
portion consisting of a boss connected to J with the bar J¹ by screws J2 which
when released, allow the compound link to adapt itself to the angle necessary for
the adjustment of the side frames A. to the width and angle required.
On the shaft F is keyed a spur wheel L. which operates the measuring drum P.
through a train of intermediate wheels T. which are adjustable, and thereby allow
wheels of varying diameters to be utilized in place of wheel L. for regulating the
speed of wheel M. secured on shaft of measuring drum P. so that, the latter
rotates at the desired speed required by the cloth to be stretched, in proportion to
the increased speed of the pitch chains C.
The cloth Z. to be stretched and tentered, is conducted through ordinary guides,
passing in the direction of the arrows over the pressure roller Q. then in contact
with the circumference of the measuring drum P. around which it also passes and
is delivered over guiding rollers R and S¹ to the pins of the pitch chains C of
the tentering or stretching machine; or in lieu of the roller S¹, an ordinary
slay may be used; the cloth in either case being pressed on the pins of the
pitch chains by rotating brushes or other well known means.
By passing the cloth over the pressure roller Q rotating by frictional contact
with the measuring drum P, then over the measuring drum P in the manner
described, and regulating by positive motion the surface speed of the latter in
relation to the speed of the pitch chains C. a predetermined amount of stretching,
an even tension and a positive and uniform delivery of the cloth is obtained
throughout the length of the fabric, with little liability of the fabric being unduly
held and thereby damaged by the frictional contact between the circumferences of
the rotating measuring drum P. and pressure roller Q. which by our arrangement
rotate at a regulated speed and deliver the fabric proportionately in relation to
the speed of the pitch chains C driven by positive motion in the usual manner.

page_text: 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 :-
:―
1. In a tentering machine the spur gearing D and E combined with a pitch
chain wheel B. compound link, shaft F. intermediary gearing T and the measuring
drum P. all arranged substantially in the manner shown and described.
2. In a tentering machine the combination of the measuring drum P. with the
pressure roller Q. operated substantially in the manner described.
3. In a tentering machine the connection of one of the chain wheels B with the
measuring drum P. in a manner by which positive motion is imparted to the latter
and the capability of adjusting the distance between the side frames A retained.
Dated this 13th day of June 1891.
JOHN WAUGH,
Agent.