Improvements in or applicable to Machinery for Preparing and Spinning Fibrous Materials, having reference to the Drawing of the Slivers or Rovings.
Year: 1890

page_text: Date of Application, 14th Nov., 1890
Complete Specification Left, 1st July, 1891-Accepted, 1st Aug., 1891
PROVISIONAL SPECIFICATION.
Improvements in or applicable to Machinery for Preparing and
Spinning Fibrous Materials, having reference to the Drawing of
the Slivers or Rovings.
I, WILLIAM TATHAM, of Vulcan Works, Rochdale, in the County of Lancaster,
Machine Maker, do hereby declare the nature of the said invention to be as
follows:
:-
In machinery for preparing and spinning fibrous materials the slivers, slubbings
or rovings are drawn or reduced to the thickness required by drawing rollers, which
are weighted so that the upper roller is pressed firmly against the lower roller by
suitable weighting arrangements.
The sliver, slubbing or roving (hereinafter termed the sliver) is traversed to
and fro in the lengthway of the bosses of the rollers to obtain an equal and uniform
action thereon, and when the slivers traverse as they move together to one end of
each boss it is clear that the weight which is generally applied at the middle
between two bosses, does not act with uniform pressure upon the sliver at each
point and that this pressure varies for each sliver as they traverse except when
under the centre of each boss.
It is therefore obvious that either more weight than is required must be used to
make the draught perfect and the pressure sufficient at all times or there is too
little pressure at one time and too much at another and if more weight is used than
is necessary to give perfect draught at all times, there is consequently greater
wear and tear and waste of power.
My invention consists in arranging the slivers in relation to and in traversing
them to and fro along the bosses of the drawing rollers so that they will at all
times be equally distant from the point at which the roller is weighted.
For example in the case of a roller with two bosses weighted in the middle, and
with one sliver to each boss, the slivers by my invention are traversed along the
bosses simultaneously to and from each other, that is, they simultaneously come
nearest together and to the weighting point and furthest apart therefrom so that
the pressure exerted upon each sliver by each boss is constant and uniformly the
same for every position of the slivers on the bosses, there thus a more perfect
and uniform draught with the least amount of weighting.
In the ordinary arrangement one sliver is nearest and the other is furthest from
the point of weighting alternately and the pressure is never uniform except for a
moment when equally distant from the point of weighting.
The curls or guides traversing the slivers are by my invention say for a two
boss roller in separate guiding rods or bars simultaneously moved in opposite
directions, that is, one sliver for one boss of the roller is moved by one rod and the
other sliver for the other boss by the other rod, the movement being given by any
suitable arrangement of mechanism.
Dated this Thirteenth day of November 1890.
PETER J. LIVSEY,
Agent.

page_text: COMPLETE SPECIFICATION
Improvements in or applicable to Machinery for Preparing and
Spinning Fibrous Materials, having reference to the Drawing of
the Slivers or Rovings.
I, WILLIAM TATHAM, of Vulcan Works, Rochdale, in the County of Lancaster,
Machine Maker, 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 :--
In machinery for spinning and preparing fibrous materials the slivers, slubbings
or rovings are drawn or reduced to the thickness required by drawing rollers,
which are weighted so that the upper roller is pressed firmly against the lower
roller by suitable weighting arrangements.
The sliver, slubbing or roving (hereinafter termed the sliver) is traversed to and
fro in the lengthway of the bosses of the rollers to obtain an equal and uniform
action thereon, and when the slivers traverse, as they move together to one end of
each boss, it is clear that the weight which is generally applied at the middle
hetween two bosses, does not act with uniform pressure upon the sliver at each
point and that this pressure varies for each sliver as they traverse except when
under the centre of each boss. It is therefore obvious that either more weight
than is required, must be used to make the draught perfect and the pressure
sufficient at all times, or there is too little pressure at one time, and too much at
another time, and if more weight is used than is necessary to give perfect draught
at all times, there is consequently greater wear and tear and waste of power.
My invention consists in arranging the slivers in relation to and in traversing
them to and fro along the bosses of the drawing rollers so that they will at all
times be equally distant from the point at which the roller is weighted.
For example in the case of a roller with two bosses weighted in the middle, and
with one sliver to each boss, the slivers by my invention are traversed along the
bosses simultaneously to and from each other, that is, they simultaneously come
nearest together and to the weighting point, and furthest apart therefrom, so that
the pressure exerted upon each sliver by each boss is constant and uniformly the
same for every position of the slivers on the bosses, there is thus a more perfect
and uniform draught with the least amount of weighting.
In the ordinary arrangement one sliver is nearest and the other is furthest from
the point of weighting alternately and the pressure is never uniform except for a
moment when equally distant from the point of weighting.
The curls or guides traversing the slivers are by my invention say for a two
boss roller in separate guiding rods or bars simultaneously moved in opposite
directions, that is, one sliver for one boss of the roller is moved by one rod, and the
other sliver for the other boss by the other rod, the movement being given by any
suitable arrangement of mechanism.
Where two or more slivers are under the same boss of a roller having two
bosses, and the weight or pressure to press the upper roller against the lower roller
is in the middle or equidistant from each boss, the slivers under each separate boss
of the same roller may be simultaneously traversed to and fro, but so that the
slivers under each boss of the same two bossed roller, will be at all times
relatively equidistant from the point of pressure or weighting.
When there are two or other even number of slivers under the same boss
having pressure applied to it in the middle of the boss, then according to my
invention, the slivers are traversed to and fro, so that in the case of two slivers
under a boss they will each in traversing to and fro be kept at all times equidistant
from the centre of pressure or weighting; and in the case of say four slivers to the
boss, one pair of slivers relatively to the other pair will be kept at all times when
traversing to and fro equidistant from the centre of pressure or weighting.

page_text: When the same top roller is "weighted" or has pressure applied to press it upon
the lower roller at each end of it, then according to my invention the slivers, if
two or more even numbers are divided into two sets and are traversed in opposite
directions simultaneously, so that each set is relatively at all times at equal
distances from the points of weighting or pressure.
In the accompanying drawings,
Fig. 1 is a back clevation, Fig. 2 an end elevation looking from the left of Fig. 1,
but with parts shown in section, and
Fig. 3 is a top plan view.
Fig. 4 is a cross section through the drum cam (detached) shown in Fig. 1 and
in dotted lines in Figs. 2 and 3.
Fig. 5 is a back elevation, and Fig. 6 a cross section showing ordinary drawing
rollers in which the top rollers are two bossed rollers weighted in the middle
and the slivers are traversed in the ordinary manner.
, in Figs. 1, 2 and 3 represents an ordinary roller beam; a', Figs. 1 and 2,
one of the stands for carrying the ordinary lower fluted rollers; b, being the front
lower roller; c, the middle roller and d, the back roller.
b, c, and d, are respectively the front, middle and back top rollers.
<<
a², is the cap bar" for holding the pivots of the upper rollers b', c', and d'.
The front roller b', is weighted against the lower roller b, in an ordinary manner
by a hook 2, a rod ³, and weight 61.
The middle and back rollers are weighted against their respective rollers in an
ordinary manner by a saddle c², between the middle and back rollers, and a hook c³,
rod c', and weight e.
In the ordinary arrangement for traversing the slivers between the rollers, which
is illustrated by Figs. 5 and 6 there is only one traverse rod e, and the guides e²,
for all the slivers are attached to this rod e, which has a to and fro end motion
imparted to it, consequently the slivers for each boss of two bossed top rollers
weighted in the middle simultaneously arrive at the corresponding end of each
boss as represented in Fig. 5 where the sliver guides e, are shown at one extreme
of their reciprocating movement.
The guides shown are open forked guides such as are used for the slivers passing
to the rollers of drawing and "first slubbing" frames, but these guides may be
holes in plates or projections from or secured to the traverse rods, e, or wire
curls, or any other form of guides.
According to my invention there are two traverse rods e, and e', in place of
one, which rods are moved to and fro simultaneously in opposite directions, and
the sliver guide e², for one boss of a two bossed roller weighted in the middle
is attached to or formed in or upon one rod e, and the sliver guide e³, for the
other boss to the other rod e', as shown by Figs. 1, 2 and 3.
The mode of imparting simultaneous reciprocating movement to the traverse
rods e, and e, in opposite directions may be effected by cranks, or cams or other
mechanism, in a variety of ways, but I prefer to work the two traverse rods by a
double acting drum cam f, in order to give an uniform traverse to the slivers
between the rollers, as a crank or cranks give to the traverse rods a quick movement
at the middle and a slow movement at the two extremes of their reciprocations.
9, is a stand secured to the roller beam a, and to this stand a bracket g', is
secured by a bolt, which also forms the axis upon which a worm wheel y³, rotates,
that gears with a worm formed upon one of the back rollers (.
On the boss of the worin wheel ³, a bevel pinion 94, is cast or secured and this
pinion gears with a bevel wheel f', secured to or cast upon the drum cam f, which
rotates upon a pin f², that passes through holes in descending projections from the
bracket gl.
This bracket o, is cast in one piece, and it has a slot in its upper side for the
upper part of the worm wheel ³, to pass and work through freely, and it has also
a slot in its upper side the lengthway of which is parallel to the axis of the drum
cam f

page_text: The bracket g', is shaped to form a cover to the upper side of the cam (see
Fig. 4) and leave a space between its inner face and the cam, for two segmental
parts, and, made to a curve concentric with the axis of the drum cam.
Each segmental piece f³, and 4, has a pin (one f, the other f) that fits and
enters the cam groove in the drum f, and the pin of one segmental piece enters
the cam groove on one side of it and that of the other segmental piece on the
diametrically opposite side of the cam f
Each segmental piece 1³, and f, at its upper side has a forked projection,
one f', the other f8, from it, into which a projection e¹, from one rod e, and e³, from
the other rod e', can enter, so that the segmental pieces will thus move the rods to
and fro as the cam rotates.
There is a lip, projecting from each segmental piece f³, and f, that comes
in each case under the lower edges of the bracket y', see Fig. 4.
This arrangement causes the cam groove to give uniform and simultaneous
opposite reciprocations to the two rods e, and e', the cam groove being shaped to
give an uniform traverse movement in each direction.
The segmental pieces f³, and f', are first placed in their positions in the
bracket, then the cam f, is placed in position on its pin, and thus the segmental
plates slide upon the cam, and are prevented from rotating by the forked projection
from each, passing through the slot in the bracket y'.
The two rods e, and el, slide in bearings from the stands.
If desired the guides e², on the back rod el, may be made to project over the
rode, nearest the back rollers so that the guides from both rods will be equally
near to the rollers.
In applying my invention to existing machines where two traverse rods e, and e',
have to take the place of one, or in applying my invention to new machines
where long and thin traverse rods are to be used, such traverse rods are or may
be worked by a cam or other means at one end of the machine, and by a spring or
springs and weighted levers or weights at the other end of the machine so that the
cain or other mechanism will pull the rods in one direction, and the springs or
weights will pull them in the other direction.
The traverse rods will thus be worked by pull or tension and they will not be
liable to bend as they would be if pushed from one end in one direction.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed I declare that what I
claim is.-
1. The system or mode of traversing the slivers passing to drawing rollers
used for preparing and spinning fibrous materials in such manner that the slivers
passing between the rollers and traversed to and fro, are at all times equally
distant or nearly so, from the point or points at which the top rollers are weighted
or have pressure imparted to them substantially as hereinbefore described and
illustrated by the drawings.
2. The combination of two traverse rods actuated simultaneously in opposite
directions for traversing the slivers to and fro which are being fed between drawing
rollers for preparing and spinning fibrous materials, substantially as and for the
purpose hereinbefore described and illustrated by the drawings.
3. The combination of one cam with two traverse rods, in order to produce
simultaneous reciprocations in opposite directions substantially as hereinbefore
described and illustrated by Figs. 1 to 4 inclusive of the drawings.
Dated this Thirtieth day of June 1891.
PETER J. LIVSEY,
Agent.