Improvements in or in connection with Slubbing, Drawing, Spinning, and like Frames.
Year: 1892

page_text: Date of Application, 7th Sept., 1892
Complete Specification Left, 7th June, 1893-Accepted, 22nd July, 1893
PROVISIONAL SPECIFICATION.
Improvements in or in connection with Slubbing, Drawing, Spinning,
and like Frames.
I, ROBERT WOOD, of 2 New Bridge Street Manchester, in the County of
Lancaster, Secretary to the Firm of Emmott and Company Limited, do hereby
declare the nature of this invention (which has been communicated to me from
abroad by Charles Kirschner, Chaussée de Dornach, 17, Mulhouse, Alsace) to be
as follows:-
This invention relates to improvements in slubbing, drawing, spinning and like
frames and has for its object the provision of means whereby the slub or rove may
be supported and slightly compressed in order to increase or regulate the resistance
of the fibres to the drawing operation.
Hitherto in the spinning etc., of fibres with a short staple, the fibres are not
distributed uniformly in the sliver or in the yarn, and they issue from the delivering
rollers in lumps thus producing an irregular or choppy yarn. This defect is more
particularly observable in short stapled materials, because the fluted drawing
rollers cannot be brought sufficiently close together in proportion to the length of
the staple; in this case the fibres offer no resistance to the drawing process which
necessarily tends to become intermittent and thus produce a choppy yarn. This
invention is designed to remedy this defect and is chiefly applicable to spinning
frames for it is in these that the imperfections referred to most usually occur.
The invention consists essentially in the provision in the space between the two
pairs of drawing rollers usually employed of a supporting medium for the slub or
rove provided at its top edge with a polished surface and of a small roller working
in conjunction with the said supporting medium, the slub or rove being slightly
compressed between the two, and held back so as to cause the fibres to resist in a
uniform manner the action of the drawing rollers.
In carrying out my invention I provide a number of supporting surfaces which
correspond in length to a roller frame and are fitted at the bottom with slots by
means of which they are fixed to bent plates. These plates are screwed on to an
angle iron bar equal in length to a set of rollers between two standards and resting
on regulating screws fitted to the brackets of a standard fixed on the roller beam.
This standard is provided at its ends with notches which embrace the vertical side
of the angle bar and serve to guide it. The regulating screws are intended to
raise or lower the angle bar and consequently the supporting and compressing
surfaces.
In some cases I dispense entirely with the top roller and raise the bottom
supporting medium slightly above the line of contact of the fluted rollers so as to
cause the fibres to resist the action of the latter in this way.
To prevent the formation of fly on the back roller a thin board covered with a
pile fabric is placed under this roller. The pressure rollers working in conjunction
with the supporting surfaces are provided at their ends with guide pins which fit
into the guide slots inserted in the clearer boards of the rollers and maintain them
at a suitable distance from the drawing rollers.
Dated this Ach t
1002
Per pro EMMOTT & CO., LIMITED,
Robert Wood, Secretary,
New Bridge Street, Manchester, Agents for the Applicant.

page_text: COMPLETE SPECIFICATION:
Improvements in or in connection with Slubbing, Drawing, Spinning,
and like Frames.
1, ROBERT WOOD of 2 New Bridge, Street, Manchester, in the County of
Lancaster, Secretary to the Firm of Emmott and Company Limited (a communi-
cation to me from abroad by Charles Kirschner, Chaussée de Dornach, 17 Mulhouse,
Alsace) 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 improvements in slubbing, drawing, spinning, and like
frames and has for its object the provision of means whereby the. slub or rove may
be supported and slightly compressed in order to increase or regulate the resistance
of the fibres to the drawing operation.
Hitherto in the spinning etc., of fibres with a short staple, the fibres are not
distributed uniformly in the sliver or in the yarn, and they issue from the
delivering rollers in lumps thus producing an irregular or choppy yarn. This
defect is more particularly observable in short stapled materials because the
fluted drawing rollers cannot be brought sufficiently close together in proportion to
the length of the, staple; in this case the fibres offer no resistance to the drawing
process which necessarily tends to become intermittent and thus produce a choppy
yarn. This invention is designed to remedy this defect and is chiefly applicable to
spinning frames for it is in these that the imperfections referred to most usually
occur.
The invention consists essentially in the provision in the space between two pairs
of drawing rollers of a supporting medium for the slub or rove provided at its top
edge with a polished surface and of a small roller working in conjunction with the
said supporting medium, the slub or rove being slightly compressed between the
two, and held back so as to cause the fibres to resist in a uniform manner the action
of the drawing rollers.
The invention will be fully described with reference to the annexed drawings
wherein the new parts are applied to two of the pairs of rollers of a drawing-frame
though it will be understood that the invention may be applied to slubbing, roving,
intermediate or spinning frames.
In these drawings
Figs., 1. and. 2. show cross sections of two arrangements whilst
Figs. 3. and 4. show respectively a front elevation.and cross section of the
complete arrangement as seen in Figs. 1. and 2.
In carrying out my invention I provide a number of supporting surfaces A, A¹,
which each correspond in length to a boss, of a roller. These are provided at the
bottom with slots by means of which they are fitted-so many in a set-to
plates B. These plates B. are screwed on to the upper face of an angle iron
bar H. equal in length to a "head" of the frame, which in turn rests in, the
arms G. G' of a bracket M. bolted to the roller beam. The arms G. G' are
provided with screws E. E¹ to raise or lower, the angle bar and consequently
the supporting and compressing surfaces A. A. Small pressing rollers D as seen
in Figs. 1, 3. and 4. rest freely on the slivers and receive from them a rotary
motion. These rollers are fitted with pegs at each end which work in corre-
sponding slots N. formed in the cap,bars so that they may be constantly maintained
in a position half-way-between the two pairs of drawing rollers and in line with the
surfaces A., A., It will be seen, from, the arrangements described so far that
the roving as it passes through the rollers is supported by the surfaces A. A¹;
and slightly compressed by the rollers D. so that the fibres are as it were con-
solidated and enabled to retain a more uniform tractive force one upon another

page_text: and thus to assist in a more perfect attenuation of the fibres-especially short
stapled ones.
In some cases I dispense entirely with the rollers D. and raise the bottom
supporting medium slightly above the line of contact of the drawing rollers as
shown in Fig. 2. so as to cause the fibres to resist the action of the latter in
this way.
To prevent the formation of fly on the rollers a thin board K. covered with
a pile fabric or with bristles is placed under them as shown in Fig. 4. under the
roller O.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is.:
1. In machines of the classes referred to the use of supporting surfaces con-
sisting of bars such as A A' with or without rollers such as D. for retarding the
progress of the sliver or rove so that the fibres of which it is composed may more
equally resist attenuation substantially as described.
2. In machines of the classes referred to the means for retarding the sliver or
rove constructed substantially as described and shown with reference to Figs. 1, 3
and 4 or Fig. 2.
Dated this 5th day of June 1893.
Per pro EMMOTT & CO., LIMITED,
Robert Wood, Secretary,
2, New Bridge Street, Manchester, and 85, Strand, London,
Agents for the Applicant.