New or Improved Mecbanism for Drawing Fibres off Machine Combs.
Year: 1898

page_text: New or Improved Mecbanism for Drawing Fibres off Machine Combs.
We, WILLIAM BROADLEY LEE, of Providence Iron Works, Bradford, in the
County of York, Machine Maker, and WILLIAM FISHER, of 24, Farfield Street,
Manningham, Bradford aforesaid, Mechanic, do hereby declare the nature of
this invention to be as follows:-
This invention relates to new or improved mechanism for drawing off fibres
from "Noble" and other machine combs.
For this purpose we employ a nip in which the part engaging the fibres
essentially moves or revolves in the same direction or approximately the same
direction as the fibres carried by the comb from which they are to be drawn off.
This nip may consist of a hollow cylinder, hereinafter called the external nip,
mounted upon a vertical shaft and having its periphery close to the comb from
which the fibres are to be drawn. An internal nip is provided lying partly
inside the external nip and is arranged to revolve on an axis inclined at a suitable
angle to that of the external nip. The meeting or nipping faces of the two nips
are turned to the form of portions of spheres having concentric centres and here-
inafter called the nipping faces. Nipping faces are thus obtained the same
breadth as the meeting faces and the nip is continuous from the point where the
nipping faces meet to the point where they part. The length of nip being
determined by the angle of the axes of the nipping faces to each other as well
as the extent to which the internal nip lies within the external one.
apparatus is placed in such a position in relation to the comb that the pro-
jecting fringe of fibre readily passes between the two nips which are more or
less apart at this point to admit the fringe. Then as the adjacent peripheries
of the comb and nip move in the same direction the nip closes and the fringe is
bent down and held between the nipping faces and as the adjacent peripheries of
the nip and comb by continuing to revolve move apart the fibres are drawn out
of the comb and are retained by the nip until the nipping faces part sufficiently
to release them.
The
The nipping faces particularly that of the internal nip may be made more or
less elastic. This may be effected by inserting one or more leather thongs or
rings in an annular groove or grooves cut in the nipping face. The leather
projects a suitable distance and any other suitable material may be employed
instead of leather. Or the nipping face may be made in sections sliding radially
and pressed to their outward limit by springs. The sections are preferably
divided on the slant so that the divisions do not run parallel with the fibres.
The sections may be pressed outwards by inclines at or close to their inner ends
engaged by inclines on studs pressed towards them by springs and stops are pro-
vided to engage the back of such studs and limit the outward movement of
the sections. The sections may be arranged in any other suitable way: An
annular or other india rubber buffer may be used instead of springs.
The upper edge of the external nip above the nipping face is preferably

page_text: rounded and may have an annular groove cut in it to receive the lower edge of a
curved bar or
"
knife to hold the fibres after they are released by the nip.
The external nip is not necessarily cylindrical as it may be conical or of
any other suitable shape and its axis may not be vertical. The external nip
may revolve round a vertical sleeve fixed in a standard and may be driven by a
pinion below. The internal nip may revolve upon an adjustable bearing fitting
the conical or inclined end of a shaft fitting the said sleeve. This shaft is not
free to revolve in the sleeve but can be vertically adjusted therein and an internal
spring is employed to draw the nipping faces towards each other. A second
spring may be introduced to press the nipping faces apart when the pressure of
the first spring is sufficiently released. The internal nip may be driven by studs
or projections on the external nip engaging notches or projections on
internal nip.
the
A star wheel or its equivalent may be employed to direct the ends of the fibres
draw off between a pair of delivery rollers having endless belts arranged to
carry off the fibre in the form of a sliver as it is released by the nip. Or the
fibres when released by the nip may be carried away by the ends by which they
were drawn off. In this case the fibres as they are drawn off are bent down by
suitably arranged "knives or guides against the outer periphery of the external
nip and are held there by a roller or rollers until released by the nip and the
released ends are then directed by a star wheel or its equivalent between the
delivery rollers. Two or more adjustable rollers are preferably employed to hold
the fibres against the outer periphery of the external nip.
"
Dated this 7th day of July 1898
DRACUP & NOWELL,
Patent Agents, Bradford.
COMPLETE SPECIFICATION.
New or Improved Mechanism for Drawing Fibres off Machine Combs.
We, WILLIAM BROADLEY LEE, of Providence Iron Works, Bradford, in the
County of York, Machine Maker, and WILLIAM FISHER, of 24, Farfield Street,
Manningham, Bradford aforesaid, Mechanic, 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 the drawing off mechanism of comb-
ing machines particularly Noble combing machines, and its object is to dispense
with the drawing off leathers usually employed and also to get the "nip" as
close to the pins of the comb as may be desired.
To fully describe our invention, reference is made to the accompanying sheets
of drawings forming a part of this specification, in which similar letters of
reference indicate corresponding parts in each of the figures.
are
Figure 1, represents a plan view of such parts of a Noble's comb as
necessary to show the application of our improved drawing off device thereto.
Figure 2, is a plan view on a larger scale of such device together with a
portion of the large circle or outer comb.
Figure 3, is a sectional view of the same on the broken line a, b.
Figure 4, is an elevation partly in section on the line y, z.
Figures 5 to 16, are views of details and modifications hereinafter referred to.
The large circle A, the small circles A2, the annular rack A³, the steam
chest A' and the bottom or motion plate A5 are of any ordinary construction.
The standard B adjustably fixed to the plate A5 is made with an arm B³ in

page_text: which the sleeve B3 is fixed by the set screw B. This forms a support for the
nipping device which consists of the external nip C and the internal nip F.
The internal face C of the nip C and the external face F2 of the nip F are made
in the form of portions of concentric spheres and the axis on which the nip F
rotates is inclined to the axis of rotation of the nip C. Therefore as the faces C³
and F form parts of concentric spheres the portion of the face F2 lying within C
is perfectly parallel to the adjacent portion of the face C2 and forms the actual
nip, whilst the inclination of the axis of the nip F causes the nipping faces to
diverge sufficiently at other parts to admit the fringe of fibres to be drawn off
and release the fibres after they are drawn off. Figure 5, represents a separate
underside view of the internal nip F and Figure 6, is a side view of the same.
Figure 7, is a separate plan view of the nip C and Figure 8, is a side view of
the same.
The boss or bearing piece C3 of the nip C fits externally over the sleeve B3 and
is confined thereon by the end of the set screw C engaging the annular groove B³
cut in B. Figure 9, is a separate side view of 13 and Figure 10, is a plan view
of the same.
A toothed wheel C is formed on the lower end of the boss C³ and
it is driven by the pinion D) on the shaft D2 passing up through the standard B.
The nip C may be made separate from its boss C and be secured thereto by
screws C fixed in the flange C⁹. Figure 11, is a separate side view of the boss.
The shaft D is driven in any convenient way and drives the nip C at about
the same peripheral speed as the comb although it may be driven faster or
slower if desired.
The inner nip F is fixed by its boss F3 and set screw F with its face F2 con-
centric with the face C2 upon the bearing piece F5 fitting the inclined conical
end of the shaft H. The bearing piece F5 is held down in position by the
adjustment nut H2 and the lock nut H³ fitting the screwed upper end H' of the
shaft H. The shaft H fits the concentric hole Be through the sleeve B3 and is
free to slide vertically therein but is prevented from rotation by the fixed
key B engaging the key-way H³ in H. The spiral spring J is introduced
between the hand-wheel H6 screwed on to the screwed lower end H7 of the
shaft H and the collar or shoulder piece 138 fixed in the hole B6 by the screw B³.
This spring tends to draw the shaft down to bring the nipping faces together
and the pressure is regulated by the hand-wheel H. A weaker spring Ja intro-
duced between the top of the shoulder piece and the shoulder He on the shaft H
is preferably provided to raise the shaft and separate the nipping face when the
hand-wheel is sufficiently unscrewed. Figure 12, is a separate view of the
shaft H.
The combs and external nips C are driven in the direction shewn by the arrows
Figure 1 and 2, and the internal nip F is driven in the same direction by the
studs C fixed in C engaging the projections F' on F.
The apparatus set approximately in the position shown in Figure 4 so that
the advancing fringe of fibres L Figure 1 passes freely into the nip and as the
comb and nip continue their motion the fringe is bent down and held between
the two spherical faces then the fringe thus held is gradually drawn out of the
comb as the peripheries of the comb and nip separate.
A star wheel N Figure 1 is preferably provided to turn the ends of the fibres
held between the nip towards the endless leather travelling on the driving
roller 02 and guide rollers 03, 03 in the direction of the arrow at a speed pre-
ferably considerably greater than the speed of the revolving nip. A second
endless leather P mounted upon the driving roller P2 and the guide roller P3 is
provided and the fibres pass between and are lightly held by the leathers before
being actually released by the nip and on being released thereby are carried for-
vard by the leathers in the form of a sliver and leave the comb in the ordinary
vay. The fibres held by the nip drawing off the fringe of the small circle pass
between the roller R and the leather P and are carried round in a sliver and
basses between the leathers with the other slivers.

page_text: To lightly hold the fibres a little time after they are released by the nip we
may employ the curved blade S fitting the groove C in C. This blade is fixed to
the slide pins S2, S2 fitting the sockets S3, S3 formed in the bracket S fixed on
the top of the spindle H between the nuts H2 and H³. Springs $4, S* and thumb
screws S5, S5 are provided to regulate the pressure.
To obtain a better and more uniform hold of the fibres we may make the
acting face of the internal nip F more or less elastic. One way of doing this is
to cut grooves d in the acting face F and fill them with leather thongs e.
Or we may employ the arrangement shewn in Figures 13 and 14, which repre-
sent a portion of the internal nip in diametrical section and side elevation. In
this case the nip is made of steel which may be pressed and ground to form and
inclined cuts fare sawn at intervals so as to make the parts between the cuts
more or less springy.
Figures 15 and 16, represent on a larger scale similar views to Figures 13
and 14 of another modification in which the acting face F2 is made in sections i
preferably obliquely divided as shewn by the divisional lines. To limit the
outward movement of the sections a notch is made in their undersides to engage
the annular projection on the bottom or guide plate secured to the pro-
jections F. Radial keys in the top driving piece F on which the boss 13 is
formed engage grooves in the top of the sections and carry the sections round
with it. The sections are pressed out by the annular india-rubber buffer or
cushion bearing against their inner ends. The pressure of this buffer is regu-
lated by the taper or conical face of the ring 9 pressed down inside the cushion
by three or more set screws j. Metal springs may be employed instead of
india-rubber.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that
what we claim is:
1. A drawing off appliance consisting of an external nip and an internal
nip in which the nipping faces form portions of two concentric spheres revolving
on different axes arranged and operating, substantially as herein shewn and
described.
2. A drawing off appliance consisting of an external nip and an internal
nip in which the nipping faces form portions of two concentric spheres revolving
on different axes and in which one or both of said nipping faces is more or less
covered with leather or its equivalent, substantially as herein shewn and
described.
3. The modification herein described with reference to Figures 13 and 14.
4. The modification herein described with reference to Figures 15 and 16.
5. A drawing off appliance consisting of the parts constructed, arranged and
operating substantially as herein shewn and described and illustrated in the
accompanying drawings.
Dated this 8th day of April 1899