Improvements in Apparatus Connected with the Drawing Rollers of Machines for Preparing and Spinning Cotton and other Fibrous Materials.
Year: 1888

page_text: Date of Application, 11th Sept., 1888
Complete Specification Left, 27th May, 1889-Accepted. 29th June. 1889
PROVISIONAL SPECIFICATION.
Improvements in Apparatus Connected with the Drawing Rollers of
Machines for Preparing and Spinning Cotton and other Fibrous
Materials.
I, GEORGE PALEY of Bank Top Mili, Preston, in the County of Lancaster Cotton
Spinner and Manufacturer do hereby declare the nature of this invention to be as
follows:-
In machines for preparing and spinning cotton and other fibrous materials the
sliver or roving" is passed between upper and lower sets of drawing rollers the
upper or "top" rollers being usually covered with leather or other suitable material.
The sliver is guided to the rollers through holes or eyelets in or upon a horizontal
sliding rod termed the traverse which is caused to move slowly sidewise first in
one direction and then in the other so as to vary the path of the sliver between
the adjoining faces of the rollers.
In all the arrangements of such apparatus heretofore known to me the recipro-
cating movement of the traverse or sliver guide is between two fixed points the
result in practice being that the rollers (and more especially the top or leather
covered rollers) become indented or "nicked" at the two points on the face of the
rollers corresponding with the commencement and finish of each sidewise journey of
the traverse.
Now my invention is designed to impart an automatic variation to the motion of
the traverse in lieu of a constant motion between two fixed points.
In one arrangement of my improved apparatus applicable more particularly to
spinning machines the distance of each journey of the traverse is gradually contracted
and widened out alternately by means of toothed wheel and eccentric and lever
mechanism arranged as follows:-Two toothed pinions fastened on the main roller
shaft gear into two toothed wheels having an unequal number of teeth and between
the two wheels is placed an outer eccentric mounted upon an inner eccentric (the
two eccentrics being preferably of different degrees of eccentricity) the inner eccentric
rotating along with one of the toothed wheels upon a common axis. The outer
eccentric is rotated by means of a pin sliding in a radial slot in the other toothed
wheel and is enclosed within a hoop or strap connected to a rod which operates
one arm of a bell crank lever whose other arm is connected to the traverse.
At each revolution of the wheels the position of the outer eccentric upon the
inner eccentric will vary in a ratio corresponding with the difference in the numbers
of the teeth of the two wheels and as the inner eccentric forms the bearing of the
outer eccentric it follows that the amount of throw of the outer eccentric will be
increased or diminished in proportion as its centre is moved to a position further
from or nearer to the centre of the axis around which the inner eccentric rotates.
In another arrangement applicable more particularly to a roving frame or other
preparation machine the distance or width of each journey of the traverse is
gradually decreased from the commencement of a "fresh set" to the completion
of the full bobbins by connecting by means of suitable levers the traverse with the
lifting rail which in such machines gradually decreases the extent of its lift as the
diameter of the bobbins increases.
In order to obviate the friction on the bottom and sides of the traverse caused
by its sliding in the ordinary stationary slot bearings I suspend it upon the lower
ends of a series of pendulum levers upon which it swings easily backwards and forwards.
Dated this 11th day of September 1888.
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus Connected with the Drawing Rollers of
Machines for Preparing and Spinning Cotton and other Fibrous
Materials.
I, GEORGE PALEY, of Bank Top Mill, Preston, in the County of Lancaster, Cotton
Spinner and Manufacturer, do hereby declare the nature of this invention and
in what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement :-
"
In machines for preparing and spinning cotton and other fibrous materials the sliver
or roving" is passed between upper and lower sets of drawing rollers the upper or
"top" rollers heing usually covered with leather or other suitable material.
The sliver is guided to the rollers through holes or eyelets in or upon a horizontal
sliding rod termed the "traverse" which is caused to move slowly sidewise first in one
direction and then in the other so as to vary the path of the sliver between the adjoining
faces of the rollers.
My invention is designed to impart an automatic variation of the distance travelled
by the traverse at each succeeding to and fro sidewise movement instead of causing it
to move or travel continuously one uniform distance between two fixed points which
in practice results in the rollers (and more especially the top or leather covered rollers)
becoming indented or "nicked" at the two points on the face of the rollers
corresponding with the commencement and finish of each sidewise journey of the
traverse.
In one arrangement of my improved apparatus applicable more particularly to
spinning machines the distance of each journey of the traverse is gradually contracted
and widened out alternately by means of toothed wheel and eccentric and lever
mechanism as follows:-Two toothed pinions fastened on the back roller shaft gear
into two toothed wheels having an unequal number of teeth and between the two
wheels is placed an outer eccentric mounted upon an inner eccentric (the two eccentrics
being preferably of different degrees of eccentricity) the inner eccentric rotating with
one of the toothed wheels upon a common axis: The outer eccentric is rotated by
means of a pin sliding in a radial slot in the other toothed wheel and is enclosed within
a hoop or strap connected to a rod which operates one end of a bell crank lever whose
other arm is connected to the traverse. At each revolution of the wheels the position
of the outer eccentric upon the inner eccentric will vary in a ratio corresponding with
the difference in the number of the teeth of the two wheels and as the inner eccentric
forms the bearing of the outer eccentric it follows that the amount of "throw" of the
outer eccentric will be increased or diminished in proportion as its centre is moved to
a position further from or nearer to the centre of the axis around which the inner
eccentric rotates.
A more convenient and compact arrangement of similar apparatus consists in
mounting the two toothed wheels and the inner and outer eccentrics upon a vertical
stud or axis and in rotating them by a worm fastened on the back roller shaft gearing
into both wheels and imparting to them simultaneously the required rotation the two
wheels having an unequal number of teeth as hereinbefore stated. The wheels may
however be rotated in any other convenient manner.
In the accompanying drawings,

page_text: The sliver d is guided to the back rollers a and a' through eylets e e on the traverse
which may be mounted to slide horizontally in bearings of the usual or any convenient
kind.
g
g and h are two toothed wheels mounted on the studs and rotated by the worm i
one of the wheels having preferably one more tooth than the other wheel. The lower
wheel carries the cylindrical stem which forms the bearing for the upper wheel
and (in the drawing) the upper part of the stem j forms the inner eccentrick. The
inner eccentric k may however be made in a separate piece and removable and be
driven by the rotating stem j on the wheel by means of a pin projecting downwardly
from its underside into a vertical hole in the top of the said stem j. The outer
eccentric is rotated around the inner eccentric by the upper wheel g through. the
medium of the pin m working in the radial slot n. When the inner eccentric made
in a separate or detached form and rotated by means of a pin as above mentioned
either the inner or the onter eccentric or both may be readily removed and changed
for other eccentrics similar in other respects but having a greater or less degree of.
eccentricity as the circumstances may require. o is the hoop or strap surrounding the
outer eccentric forming one end of a connecting rod p which at its other end fits
easily upon a pivot or pin v fastened to the traverse f.
The studs may be conveniently mounted in a bracket such as t fastened to the
ordinary framing u of the spinning machine the arrangement shewn affording the
required facilities for the adjustment of the apparatus.
It will be observed that the inner eccentric k rotates around a fixed axis s and
therefore that the extent of its sweep or "throw" is constant. On the other hand the
outer eccentric l not only rotates around the same fixed axis s at each revolution of its
driving wheel but also around a second or shifting axis namely the inner eccentric k
which forms its bearing and that it periodically makes a complete revolution round,
the inner eccentric in accordance with the difference of the speeds at which the inner
and the outer eccentrics are rotated the sweep or "throw" of the outer eccentric being
thus constantly varied. The two wheels g and h having an unequal number of teeth
and being rotated simultaneously at unequal speeds it follows that the eccentric driven
by the wheel having the lesser number of teeth will be rotated at a quicker speed than
and will overtake the eccentric driven by the wheel having the greater number of
teeth thus causing the two eccentrics to gradually change their position relatively to
each other (as shewn in the diagram views Figs. 6, 7 & 8) and consequently to impart
a gradually increasing or decreasing amount of " throw or to and fro movement
to the outer eccentric and therefore to the rod p and traverse as hereinbefore
stated.
Fig. 9 is another diagram view illustrating the variations imparted to the traverse
by the operation of the apparatus hereinabove described and shewn in the drawings
the traverse reaching its extreme limits once in about twenty-five to and fro movements
or journeys.
It will be obvious that the required difference or inequality of the rotating speeds of
the two eccentrics may be obtained otherwise than by employing a pair of wheels
(such as g and h) having an unequal number of teeth and a worm as above described.
Thus both wheels may have the same number of teeth but they may be rotated at
different speeds by causing their respective pinions or other driving arrangement to
impart the required unequal speed to the said wheels.
Fig. 5 represents an ordinary form of leather covered top roller such as is
commonly employed in spinning machines and the figure illustrates the limits within
which I preferably arrange my improved variable traverse apparatus to guide the
sliver. The points 1 and 2 correspond with the maximum distance and the points 3
and 4 with the minimum distance travelled by the traverse.
In order to obviate the friction on the bottom and sides of the traverse caused by
its sliding movement in the ordinary stationary slot bearings the traverse may be
suspended or hung upon the lower ends of a series of pendulum levers upon which to
swing easily backwards and forwards. :

page_text: I do not wish to include as part of this invention the arrangement of apparatus
described in my provisional specification with reference to preparation machines the
arrangement hereinabove described and illustrated in the drawings as applied to
spinning mules being equally applicable to preparation machines.
:
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. In machines for preparing and spinning cotton and other fibrous materials the
use or employment of an inner eccentric rotating round a fixed axis the said inner
eccentric constituting the axis or hearing of an outer eccentric and the two eccentrics
being rotated at different or unequal speeds whereby the amount of movement
imparted to the traverse is caused to be alternately gradually increased and then
gradually decreased as hereinbefore described.
2. In combination with an inner and an outer eccentric operating in the manner
indicated in Claim 1 the use or employment of two toothed wheels having an unequal
number of teeth and simultaneously rotated by a worm arranged substantially as
described and shewn in the drawings for the purpose specified:
J
3. The general arrangement or combination of parts constituting the improved
automatic variable traverse motion apparatus constructed and operating substantially
as described and as shewn in the drawings.
Dated this 25th day of Ma. 1900
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.