Improvements in Apparatus for Guiding, Stretching, and Straightening Travelling Lengths or Endless Aprons of Textile Fabrics, Printers' Blanketing, and the like.
Year: 1895

page_text: Date of Application, 5th Jan., 1895
Complete Specification Left, 5th Oct., 1895-Accepted, 9th Nov., 1895
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Guiding, Stretching, and Straightening
Travelling Lengths or Endless Aprons of Textile Fabrics, Printers'
Blanketing, and the like.
We JOHN HAWTHORN and JOHN PEMBERTON LIDDELL of the Firm of John
Hawthorn and Company, of Newtown, New Mills, near Stockport, in the County
of Chester, Engineers, do hereby declare the nature of this invention to be
as follows:-
Our present invention relates to improved means for guiding or causing textile or
other flexible fabrics or bodies to travel truly and without substantial variation or
movement from side to side through apparatus where such governing and guiding is
necessary or desirable. For example our improvement might be used in connection
with the endless blanketing of textile material, "leatherine," mackintosh or the like
in calico printing machines, or in cloth stretching apparatus or in any other
mechanism in which it is desired to keep a travelling blanket, fabric, apron or other
similar body straight in its course and free from creases. According to our invention
we make use of the ordinary two rollers arranged at an angle to each other, the
meeting point of the two rollers being at about the centre of the blanket or fabric
in ordinary cases. The tendency of these two rollers is to pull the blanket or fabric
from the centre towards the selveges, and according as one or other of these two
rollers gains the mastery, so does the fabric or blanketing move to one side or the
other. To correct this it is customary to arrest the rotation of the roller which has
overdrawn the blanket or fabric to one side, and this stoppage of the roller causes
the blanket or fabric to creep back to its proper place in obedience to the drag of
the angular roller still revolving. This stoppage of the over-drawing roller has
hitherto been effected by hand, although in some cases the said rollers have been
mounted in a rocking frame with the object of causing the movements of the frame
towards one side or the other, to brake or stop the over-drawing roller by an
arrangement of levers and parts. This latter attempt to render the stoppage of
the roller automatic has not however been successful especially in the case of calico
printers' blanketing, which is subject to an unusual strain.
Our present invention is directed towards such an automatic stoppage of the
over-drawing roller, and this we obtain by means greatly more simple and effective
than anything that has yet been proposed to effect the same purpose. As already
said we use the existing angular rollers, but on the end of each roller we place a
brake strap the fast end being secured to a fixed bracket. The loose end is carried
partly around the roller end, and is secured to an extension which is led forward to
a boss on a loose pulley which lies in line with and is of equal diameter to, and
practically forms a part of, a carrying roller immediately behind or after the angular
rollers. A slight margin of carrier roller is left on each side of the blanket or
fabric, so that so long as the blanket or fabric runs straight over the carrying roller
the end pullies and continuations remain at rest. But if the blanket or fabric should
move to one side or the other sufficiently to come into frictional contact with the
periphery of one of the loose pullies or continuations at the ends of the carrying
roller, then the pulley is rotated so that its boss winds on the extension of the brake
strap and applies the brake so as to stop the angular roller which has overdrawn
the blanket or fabric. Upon this, the blanket or fabric creeps back. to its proper

page_text: place leaving the pulley, which then resiles and takes off the brake allowing the
angular roller again to revolve. The winding-on boss being small in comparison to
the diameter of the carrier roller pulley the effective force applied to the brake
is correspondingly multiplied.
By the described means any tendency of the blanket or fabric to run crooked is
corrected immediately and automatically. When applying our improvement to the
guiding of calico printers' blanketing, we would prefer to place the apparatus
between the printing machine and the washing machine although we do not bind
ourselves to this.
Dated this 4th day of January 1895
E. K. DUTTON & Co.,
5 John Dalton Street, Manchester, Agents.
Improvements in Apparatus for Guiding, Stretching, and Straightening
Travelling Lengths or Endless Aprons of Textile Fabrics, Printers'
Blanketing, and the like.
We JOHN HAWTHORN and JOHN PEMBERTON LIDDELL of the Firm of John
Hawthorn and Company, of Newtown, New Mills, near Stockport, in the County
of Chester, Engineers, 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 and accompanying drawings :-
-
Our present invention relates to improved means for guiding or causing textile or
other flexible fabrics or bodies to travel truly and without substantial variation or
movement from side to side through apparatus where such governing and guiding
is necessary or desirable. For example our improvement might be used in connection
with the endless blanketing of textile material," leatherine," mackintosh or the like
in calico printing machines, or in cloth stretching apparatus or in any other
mechanism in which it is desired to keep a travelling blanket, fabric, apron or other
similar body straight in its course and free from creases.
According to our invention we make use of the ordinary two rollers arranged at
an angle to each other, the meeting point of the two rollers being at about the
centre of the blanket or fabric in ordinary cases.
The tendency of these two rollers is to pull the blanket or fabric from the centre
towards the selveges, and according as one or other of these two rollers gains the
mastery, so does the fabric or blanketing move to one side or the other.
To correct
this it is customary to arrest the rotation of the roller which has overdrawn the
blanket or fabric to one side, and this stoppage of the roller causes the blanket or
fabric to creep back to its proper place in obedience to the drag of the angular
roller still revolving. This stoppage of the over-drawing roller has hitherto been
effected by hand, although in some cases the said rollers have been mounted in a
rocking frame with the object of causing the movements of the frame towards one
side or the other, to brake or stop the over-drawing roller by an arrangement of
levers and parts. This latter attempt to render the stoppage of the roller automatic
has not however been successful especially in the case of calico printers' blanketing
which is subject to an unusual strain.
Our present invention is directed towards such an automatic stoppage of the
over-drawing roller, and this we obtain by means greatly more simple and effective
than anything that has yet been proposed to effect the same purpose.
The drawings attached to this Specification will give a more correct and exact
idea of the nature of our invention.
Fig. 1 is a side view of the arrangement

page_text: The blanketing or other fabric or material which is to be kept straight is marked a.
As already said we use the existing angular rollers supported in bearings b', b
but on the end of each roller we place a brake strap c the fast end being secured to
a fixed bracket d, which is bolted to the sole e which also carries the bearing
brackets. The loose end is carried partly around the roller end, and is secured
to an extension c¹ which is led forward to a boss f¹ on a loose pulley f which lies in
line with and is of equal diameter to and practically forms a part of, a carrying
roller g immediately behind or after the angular rollers bb. A slight margin of
carrier roller is left on each side of the blanket or fabric a as plainly appears in
Fig. 2, so that so long as the blanket or fabric runs straight over the carrying roller,
the end pullies and continuations fremain at rest.
But if the blanket or fabric a should move to one side or the other sufficiently to
come into frictional contact with the periphery of one of the loose pullies or
continuations at the ends of the carrying roller g, then the pulley f is rotated so
that its boss winds on the extension c¹ of the brake strap c and applies the brake
so as to stop the angular roller which has overdrawn the blanket or fabric. Upon
this the blanket or fabric creeps back to its proper place, leaving the pulley f which
then resiles and takes off the brake allowing the angular roller 6 again to revolve.
The winding-on boss f being small in comparison to the diameter of the carrier
roller pulley, the effective force applied to the brake is correspondingly multiplied.
By the described means any tendency of the blanket or fabric to run crooked is
corrected immediately and automatically. When applying our improvement to the
guiding of calico printers' blanketing we would prefer to place the apparatus
between the printing machine and the washing machine although we do not bind
ourselves to this.
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. The improved means or mechanism for guiding, stretching and straightening
travelling lengths or endless aprons of textile fabrics, printers' blanketing and the
like, substantially as described and illustrated.
2. In apparatus of the indicated nature the loose pullies fat each end of a
carrying roller, the said pullies being rotated or moved by any encroachment of the
material thereon by side movement, so as to brake the corresponding angular roller,
and thus cause the material to return to its proper path, substantially as described
and shown.
3. In combination with the angular rollers bb and the carrying roller g the loose
pullies with bosses and the brake straps cc' capable of acting upon the said
angular rollers bb, in the manner for the purposes and substantially as described
and shown.
1
002
E. K. DUTTON & Co.,
5 John Dalton Street, Manchester, Chartered Patent Agents,
For the Applicants.