Improvements relating to the Pressing Rollers used in Drawing and Roving Frames and other Machinery.
Year: 1899

page_text: Date of Application, 19th Jan., 1899
Complete Specification Left, 16th Feb., 1899-Accepted, 18th Mar., 1899
PROVISIONAL SPECIFICATION.
Improvements relating to the Pressing Rollers used in Drawing and
Roving Frames and other Machinery.
I, WILLIAM SEATON, of 304, Blackness Road, Dundee, in the County of Forfar,
Mill Manager, do hereby declare the nature of this invention to be as follows;
This invention relates to means or mechanism for regulating or relieving the
tension on pressing rollers of drawing and roving frames and the like, and has
for its object the improvement of such regulation in conjunction with the pro-
vision of more ready means of relief, than those hitherto available.
In carrying my invention into effect or practice in one modification, and as
applied for instance to the pressing rollers of a textile fibre roving or drawing
frame; I dispense with the weighted lever commonly used for pulling the
pressing roller against the drawing roller, and substitute therefor a spring of
variable tension. Such spring is preferably of spiral form, guided or retained
by a rod whose upper end engages with the pressing roller strap, and which
carries at its lower or further end, an adjustable winged nut or the like.
The said rod passes through or near by the "bend rail" or other fixed part
of the framing, to secure an abutment for the spring, and regulation of the
tension is effected by varying the range of the spring, between the aforesaid
rail and nut.
On the rod which guides or retains the spring, I provide between. its attach-
ment to the roller strap, and the top of the "bend rail," a collar or abutment
suitable for receiving and retaining the end of a lever or relieving bar of
special design. Such lever consists preferably of a metal bar of rectangular
Section, forked at the end so as to therein contain the aforesaid rod, and fur-
nished with a heel or fulcrum piece designed so as to just bear upon the "bend
rail."
"choke "),-to
When it is desired for any reason,-(such as in the case of a
relieve the tension on the pressing roller, or even to entirely release such roller,
this lever is inserted between the said rail as a fulcrum and the rod abutment,
so that when its further or free end is rotated or pressed upon, the rod is raised
against the downward pressure of the spring. The strap and its pressing roller
are thus relieved of such pressure to any desired amount, or until the roller can
be entirely removed.
One such free lever may suffice for all the rollers on a machine, but where
desirable I may in another modification provide each roller with a lever acting
as before described, but permanently attached to the beforementioned rod, rail,
or other convenient part.
In yet another modification I may if desired retain the weighted lever for

page_text: producing and regulating the tension as at present, and use in conjunction
therewith, my improved relieving mechanism as before described.
Dated this 17th day of January 1809
WILLIAM SEATON,
Applicant.
Improvements relating to the Pressing Rollers used in Drawing and
Roving Frames and other Machinery.
I, WILLIAM SEATON, of 304, Blackness Road, Dundee, in the County of Forfar,
Millmanager, 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 means or mechanism for regulating or relieving the
tension on pressing rollers of drawing and roving frames and the like, and has
for its object the improvement of such regulation in conjunction with the pro-
vision of more ready means of relief, than those hitherto available.
In order that my said invention may be the better understood, I have here-
unto appended an explanatory sheet of drawings, in the several figures of which,
the same reference numerals indicate the same or like parts where shown.
Figures 1, and 2, of the drawing are front and side elevations respectively, of
the parts of a textile fibre drawing or roving frame, affected by and fitted with
one modification of my improvements.
Figures 6, and 7, are similarly affected and related parts of the same machines,
fitted with another modification.
Figures 3, and 8, illustrate by comparison with Figures 2, and 7, respectively,
and with reference to the said modifications, the operation or effect of my
improvements; while Figures 4, and 5, show a modification of the relieving
mechanism, designed to aid in such effect.
In carrying my invention into effect or practice in one modification as illus-
trated more particularly by Figures 1, 2, and 3, I dispense with the weighted
lever 23, (Figures 6 and 7); commonly used for pulling the pressing roller 10,
against the drawing roller 11, and substitute therefor a spring 12, of variable
tension. Such spring is preferably of spiral form, guided or retained by a
rod 13, whose upper end engages with the pressing roller strap 14, and which
carries at its lower or further, end an adjustable winged nut 15, or the like.
The said rod 13, passes through or near by the "bend rail" 16, or other fixed
part of the framing, to secure an abutment for the spring, and regulation of
the tension is affected by varying the range of the spring between the aforesaid
rail 16, and nut 15, by screwing or unscrewing the latter.
On the rod 13, which guides or retains the spring 12, I provide between its
attachment to the roller strap 14, and the top of the bend rail" 16, a collar
or abutment 17, suitable for receiving and retaining the end 18, of a lever or
relieving bar 19, of special design. Such lever 19, consists preferably of a metal
har of rectangular section, forked at the end 18, so as to therein contain the
aforesaid rod 13, and furnished with a heel or fulcrum piece 20, designed so as to
just bear on the "bend rail" 16.
When it is desired for any reason,-(such as in the case of a "choke" 21),-
to relieve the tension on the pressing roller 10, or even to entirely release such
roller as shown in Figure 3, this lever 19, is inserted between the said rail 16,
as a fulcrum, and the rod abutment 17, so that when its further or free end is

page_text: -rotated-or pressed-upon in the-direction of the-arrow, Figure 2, the rod is raised
against the downward pressure of the spring. The strap 14, and its pressing
roller 10, are thus relieved of such pressure to any amount, by the consequent
compression or yielding of the spring, until if desired, the roller 10, can be
entirely removed. The fulcrum piece 20, being tapered, may be pushed forward
to such a distance as to enable the relief to be maintained, by holding up the
rod 13.
One such free lever may suffice for all the rollers on a machine, being inserted
to relieve each double roller 10, as required, but where desirable, I
may in
another modification as illustrated by Figures 4, and 5, provide each such roller
with a lever acting as before described, but permanently attached to the rod,
rail, or other convenient part. In the drawings I have shown the beforemen-
tioned heel or fulcrum piece as a cam or eccentric 22, working on the pin
abutment, 17, so that when rotated in the direction of the arrow, Figure 5, to
the position shown by the dotted lines, the rod 13, will be raised as before
described.
In yet another modification of my invention as illustrated more particularly
by Figures 6, 7, and 8, I may if desired retain the weighted lever 23, for pro-
ducing and regulating the tension as at present, and use in conjunction there-
with my improved relieving mechanism as before described, that is to say
instead of allowing the said weighted lever 23, to act directly and rigidly on the
strap 14, through the rod and nut in the known way, I relieve or modify such
direct or rigid action, by the interposition of the spring as shown, between
such nut 15, and the under side of the lever 23, as an abutment. By so retaining
the lever 23, in conjunction with the spring as a relieving agent, I am enabled
to obviate or minimise known injurious actions due to the inertia of such lever,
or to its tendency to jam on the under side of the "bend rail" 16.
I am also
enabled to increase the elasticity of the parts and the range of tension adjust-
ment, by the conjoint use in such adjustment of the weight 24, and my reliev-
ing spring 12. Such increased elasticity and variability of tension enables the
rollers 10, as shown in Figure 8, to accommodate themselves more readily, and
mainly under the said relieving action of the spring, to abnormal thickness of
the material 25, while still deriving from the weighted lever 23, the necessary
power to draw such material forward, so as to prevent injury to the hackle bars
or other forwarding mechanism. In the case of a "choke," or necessity other-
wise arising for the release or removal of the rollers, the spring may be com-
pressed for such purpose by the lever arm 19, as before described.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed; I wish it to be clearly
understood that although I have for convenience of illustration described and
shown my invention as applied to the pressing rollers of a drawing or roving
frame, I do not limit myself in its application to these, or to the precise details
of construction herein set forth, but that I hold myself free to make such appli-
cations thereof and alterations thereupon, as conform with the spirit and scope
of my said invention. I also wish it to be understood that I am aware that
springs have hitherto been used to produce the tension in pressing rollers, and
that I lay no claim at large to the use of springs alone or weighted levers alone
for such purpose but I declare that what I claim is:-
(1). In pressing roller mechanism for drawing and roving frames and other
like machinery, the combination and arrangement of parts consisting essentially
of a weighted lever for producing the tension, in conjunction with a spring to
permit of the ready relief of such tension, by its compression with a relieving
bar, or under the stress induced by the passage of abnormally thick material:
substantially as hereinbefore described with reference to Figures 6, 7, and 8, of
the appended sheet of drawings.
(2) In pressing roller mechanism for drawing and roving frames and other

page_text: like machinery, the combination with my improvements above claimed, or with
a tension spring alone as shown in Figures 1, and 2; of a free or attached reliev
ing bar, specially designed for the purposes herein set forth; and substantially
as herein before described with reference to Figures 2, 4, and 5 of the appended
sheet of drawings.
Dated this 14th day of February 1899