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Патент USA US2127863

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Aug. 23, 1938.
P, J, GlLLEsHE
'
2,127,863
RECTIL-INEAR FIBER COMBING MACHINE
'
Filed Dec. 18, 1937
GYM-M7
ATTORNEY
Patented Aug. 23, 1938
2,127,863‘
UNITED‘ STATES PATENT OFFICE
2,127,863
I'REGTILINEAR FIBER COMBING MACHINE
Percy Joseph Gillespie, London, England
Application December 18, 1937, Serial No. 180,645
In Great Britain December 29, 1936
_ f2 Clainis._ (Cl. 19-115)
This invention relates to rectilinear or'French
machines for combing wool and other textile
?bers for spinning.
‘
-
i
In such machinesrthe ?bers are drawn from
5 the comb by a pair of co-operating fusiform‘ roll
ers of great length relative to their diameter,
about the lower of which passes a drawing-off
band or apron of leather, rubber or the like that
is drawn tight by means of an idler roller. Two
‘1 plates or “swords” are caused to rise and fall in
alternation, the curved upper sword descending
between the top comb and the drawing-01f rollers,
and the lower sword, which may be curved or
plane, rising to‘ cover the porcupine or horizon
in 1 tai combing roller during the‘operation‘ of the
drawing-off rollers. In‘ order to leave the draw
ing-off band clear for the passage thereon of the
fibers, the upper sword is operated by means of
an oscillating shaft located beneath the band, on
20 l which shaft the sword is mounted by means of a
pair of curved arms‘ which oscillate beside the
edges of the band. The whole assembly is
mounted between a~pair of side members consti
tuting a carriage which moves backwards and
‘ forwards periodically in the machine frame. " '
In the operation of the machine a leather
drawing-off band usually stretches‘ irregularly,
so that the band becomes slacker at one~side
than the other, and is thereby caused to creep
passes, with the consequent liability of ?bers to
become lapped about the exposed end‘ of the
roller.
If the frequency of correcting by inclination
of the idler roller‘ can be minimized, narrowing
of the band will likewise be reduced and‘retarded,
and the useful life of the‘ band consequently pro
longed.
'
An object of the‘ present invention is to pre—
vent the drawing-off band in a combing ma
chine of the type referred to from moving later
ally on the rollers so as to come intov hurtful
contact with oscillating or‘ stationary parts as
described, while minimizing‘ the use of inclina
tion of the idler roller as aforesaid, if provision 15
is made for such inclination. Another object is
to ensure that in the event of the band becoming
narrower under tension, it is maintaned‘ cen
trally in the drawing-off rollers so that the
amount of exposure of the rollers‘ which may
occur at either end thereof, is reduced by one half
in comparison with the possible exposure where
the band is unconstrained and free to creep en-‘
tirely to one side.
To the attainment of these objects, the inven 25
tion provides a pair of constraining members at
tachable to ‘the oscillating shaft of the upper
sword, betweenthe arms supporting said sword
and the edges of the band, and presenting smooth
3.0, laterally along the rollers. The fusiform'shape
surfaces for engaging theedges-of the band when
of‘ the rollers‘ is insufficient to‘ cause the band to
it commences to move laterally on the rollers and
remain on their median bulges (as crown‘pulleys
do with driving belts) having regard to the'slow
speed and the hunting motion imparted to‘ the
preventing it from coming into contact with
35 band. Consequently, in time the band‘ comes into
vention are each composed of a plurality of parts
securable together so as to‘be applicable to the
upper ‘sword shaft. withoutv the latter having to
contact either with one of the arms of the upper
sword at a point remote from the‘ centre of oscil
lation of said arm or with projecting square edges
of bushes upon which the ‘rollers are mounted,
and the edge of the band is damaged thereby.
This damage rapidly leads to rupturing of the
band or renders it useless.
A known mode of correcting lateral creeping
of a band due to uneven stretching consists in
45 inclining the idler roller which serves to tension
the band, so as to exert a tightening action tend
ing to make the band creep in the opposite di
rection, and so that the two'tendencies are bal
anced. This introduces a further disadvantage,
50 namely, that it accelerates the stretching of the
band. In the case of a leather band particularly,
under the continued stretching it eventually be
comes so narrow as to create a considerable gap
‘ at one side of the runway and exposelan end of
55 the drawing-off roller about which the band
either of said arms or with the aforesaid bushes.
Preferably, the members provided by the in
be removed from. its bearings.
Embodiments of the invention will be described
by way of example with reference to the accom 40
panying diagrammatic drawing, wherein—
Fig. 1 is a vertical section (on the line I-I of
Fig. 2) ofthe drawing-off means, with its car
riage, of a rectilinear combing machine,
Fig. 2-‘is a corresponding fragmentary plan
vlew,
I
Fig. 3 is an elevation, on a larger scale, of the
constraining member shown. in Figs. 1 and 2,
and
Figs. 4 and 5 arerespectively rear and side ele
vations of ‘another embodiment of. constraining
member.
Referring to Figs. 1 and 2, the carriage com
prises two like side members I interconnected as
by cross members 2. The side members I pre
2
2,127,863
sent bearings for the shafts 3 and 4 of upper
and lower helically ?uted drawing-off rollers 5
and 6, the shaft 1 of a fusiform idler roller 8 and
an upper sword shaft 9.
Adjacent the inner
sides of the frames, the shaft 9 carries two
curved arms 10 to the free ends of which are at
tached a part-cylindrical sword II. The rollers
6 and 8 are surrounded by an endless drawing
off band l2. Each of the rollers 5 and 6 is fusi
smooth surface which applies a steady guiding
pressure to the edge of the band without in?ict
ing any damage.
In the event of the band l2 decreasing in width
under tension as described, the discs l3 may be 31
moved inwards by equal extents to maintain the
band central on the rollers 6 and 8.
Figs. 4 and 5 illustrate a modi?ed constraining
member 20 which is mounted on the shaft 9 at
form, as illustrated in the drawing, so that when
the inner side of each of the sword arms I!) so
strained together by resilient means bearing on
the ends of the shaft 3 they engage together with
uniform pressure throughout their length to ef
fect regular drawing of the fibers. over the whole
member 20 comprises an elongated plate with
15 width of the band l2. The resilient means bear
ing on the shaft 3 of the press roller 5, as well
as means for imparting a periodic, rotary hunt
ing motion to the shaft 4 of the driving roller 6,
and means for oscillating the shaft 9, are known
and form no part of the invention, for which
reason they are not shown in the drawing.
According to the invention, two discs l3 are
attached to the shaft 9, one at each edge of the
band l2, between the latter and the inner sides
of hubs [4 of the sword arms I 0. Each of the
discs, which may be made of hard wood, metal
or other suitable material, comprises two semi
circular halves, connected together at one end by
a hinge I5 and provided at the other end with
lugs I6 through which a bolt ll is passed for
clamping the disc upon the shaft 9. As shown in
as to intersect continuously the planes of both
the upper and lower runs of the band l2. The
an integral half-collar 2| to which a complemen~
tary half-collar 22 is secured by two set screws 15
23 for gripping the shaft 9 and ?rmly locating
the plate adjacent the inner side of the arm I0.
Preferably, the constraining member is mounted
to be substantially perpendicular to the plane of
the upper run of the band when said member is 20
in its median position of oscillation, so that the
angle between said plane and the direction of
movement of the outer end of the member, to
wards its limit of swing, is minimized. Since the
smooth constraining surface 24 of the plate mem 25
ber 20 near its centre of oscillation engages the
lower run of the band l2, as well as engaging the
upper run of the band at a greater radius, the
plate affords steady guidance to the hand without
tending to damage the edge of the latter. A con~ 30
straining member of this form is useful where the
Fig. 3, the aperture l8 formed at the centre of
the composite disc I3 is non-circular, its dimen
sion at the diametrical plane of the half por
35 tions being equal to the diameter of the shaft 9
upper and lower runs of the band are farther
being rather less to ensure an adequate clamp
ing of the disc on the shaft under the force eX-
vided into two parts, may be secured to the shaft
and its dimension perpendicular to said plane
erted by the bolt I1.
In the operation of the machine, the band i2
40
is liable to stretch unevenly, especially when
made of leather, since it is under tension be
tween, on the one hand, the ?uted rollers 5 and
6 which repeatedly corrugate it helically, and
on the other hand, the idler roller 8, while being
also subjected to the resistant pull of the fibers
which it has to tear from the nip and drag
through the top comb. Consequently, it tends
to creep sideways. Before the discs !3 provided
by the invention are applied to confine the band,
the creep frequently attains such an extent that
an edge of the fast-moving band comes into con
tact with the ?xed bosses IS, on the members I,
in which the roller shafts 3 and 4 are mounted.
or with the sword arm Ill. The sword arm In
also oscillates at high frequency, so that the
speed of those of its portions liable to be en
gaged by the band, especially the upper run
thereof, is also high; moreover, such portions
are moving at an angle to the path of the band.
as indicated by the arrow A, when the arm I0
is at the position shown in chain-dotted lines in
Fig. 1. Contact between the edge of the band
and the bosses l9 or the sword arm I!) therefore
' _ results in damage to said edge which rapidly leads
to rupturing of the band or otherwise renders the
band useless.
When the discs l3 are provided, however, one
or the other of them smoothly engages the edges
of both runs of the band l2 in the event of the
latter beginning to creep sideways. This engage
ment minimizes the creep. Further, since the
disc has a relatively small radial dimension, its
movement is small and slow, while on the chord
whereat it is engaged it presents a relatively long,
apart, and large discs cannot be accommodated
owing to the proximity of the shaft 9 to ?xed
parts of the machine, such as the cross member 2. 35
Annular disc-like constraining members, di
9 by alternative means, such as a pair of screws
passing through the substance of one part into
the substance of the other part, or by a strap 40
surrounding the joint periphery of the parts.
The members may, however, be constituted by
discs which require to be passed over the end of
the sword shaft, with means such as an integral
collar and a grub screw for securing them there 45
on. As an alternative, each disc, whether passed
over the end of the shaft or composed of a plu
rality of complementary parts secured together,
may be rotatably located thereon by means of a
pair of collars or spring clips, or by a single collar 50
or spring clip holding the disc rotatably in con
tact with the hub of the sword arm, or distance
members or equivalent, so as to be driven round
by the edge of the band if the latter comes into
55
contact with the disc.
I claim:
1. In a rectilinear ?ber combing machine, the
combination with the endless drawing-01f band,
the oscillatable upper sword shaft disposed trans
versely to the band and the sword-carrying arms
secured to the shaft one adjacent each edge of the
band, of a pair of constraining members, each lo
cated on the sword shaft between one of the arms
thereon and the adjacent edge of the band and
presenting a smooth surface to engage said edge
in the event of the band creeping transversely.
2. In a rectilinear ?ber combing machine, the
combination with the endless drawing-off band,
the oscillatable upper sword shaft disposed trans
versely to the band and the sword-carrying arms
secured to the shaft one adjacent each edge of the
band, of a pair of constraining members, each lo
cated on the sword shaft between one of the arms
thereon and the adjacent edge of the band, each '
composed of a plurality of parts radially applica
3
2,127,863
ble to the shaft and means serving to secure the
parts in assembly about the shaft, and each as
sembled constraining member presenting a smooth
surface to engage the edge of the band in the
located on the sword shaft between one of the
event of the band creeping transversely.
together and in assembly ?rmly upon the shaft,
3. In a rectilinear ?ber combing machine, the
combination with the endless drawing-off band,
the oscillatable upper sword shaft disposed trans
versely to the band and the sword-carrying arms
10 secured to the shaft one adjacent each edge of
arms thereon and the adjacent edge of the band,
each composed of a plurality of parts radially ap
plicable to the shaft and means to clamp the parts
and each assembled constraining member pre
senting a smooth surface to engage the edge of the
band in the event of the band creeping trans
versely.
6. In a rectilinear ?ber combing machine, the 10
the band, of a pair of constraining members, each
combination with the endless drawing-off band,
located on the sword shaft between one of the
the oscillatable upper sword shaft disposed trans
versely to the band and the sword-carrying arms
secured to the shaft one adjacent each edge of
the band, of a pair of constraining members, 15
arms thereon and the adjacent edge of the band,
each composed of two parts with complementary
recesses jointly constituting an aperture to- re
ceive the shaft, the parts being mutually engage
able on a diametrical plane of the aperture, and
means serving to secure the parts together about
the shaft, and each composite constraining mem
20 ber presenting a smooth surface to engage the
edge of the band in the event of the band creeping
transversely.
4. In a rectilinear ?ber combing machine, the
combination with the endless drawing-off band,
25 the oscillatable upper sword shaft disposed trans
versely to the band and the sword-carrying arms
secured to the shaft one adjacent each edge of
each located on the sword shaft between one of
the arms thereon and the adjacent edge of the
band, each composed of two parts with com
plementary recesses jointly constituting an aper
ture to receive the shaft, the parts being mutually
engageable on a diametrical plane of the aperture,
with means serving to strain the parts together
about the shaft and thereby to clamp them ?rmly
to the shaft, and each composite constraining
member presenting a smooth surface to engage 25
the edge of the band in the event of the band
creeping transversely.
the band, of a pair of constraining members,
7. In a rectilinear ?ber combing machine, the
each located on the sword shaft between one of
combination with the endless drawing-off band,
30 the arms thereon and the adjacent edge of the
band and presenting a smooth surface to engage
said edge in the event of the band creeping trans
versely, and means associated with each of the
constraining members for securing it ?rmly to the
35 shaft.
5. In a rectilinear ?ber combing machine, the
the oscillatable upper sword shaft disposed trans 30
versely to the band and the sword-carrying arms
secured to the shaft one adjacent each edge of the
band, of a pair of disc-like constraining members
rotatably mounted on the sword shaft and means
locating each of the constraining members on the 35
shaft between one of the arms thereon and the
combination with the endless drawing-off band,
adjacent edge of the band, each constraining
the oscillatable upper sword shaft disposed trans
member presenting a smooth surface to engage
versely to- the band and the sword-carrying arms
40 secured to the shaft one adjacent each edge of
the band, of a pair of constraining members, each
said edge in the event of the band creeping
transversely.
40
PERCY JOSEPH GILLESPIE.
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