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Патент USA US2132299

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0m. 4, 1938.
‘
J. F. JACKSON
2,332,299
DRAWING MECHANISM FOR TEXTILE SLIVERS OR ROVING'S I
Filed June 16, 1957
2 Sheets-Sheet l
IN VEN TOR.
-
BY
‘
A TTORNEYS.
Uct. 41‘,
I?!‘
J. F. JACKSON '
2,132,299
DRAWING MECHANISM FOR TEXTILE SLIVERS OR ROVINGS
Filed June 16, 1957
2 Sheets-Sheet 2
/
/
//
4N VEN TOR.
b/a?é500
"mm
ATTORNEYS.
Patented Oct. 4, 1938
4
f UNITED STATES‘ PATENT ()FFlCE
DRAWING MECHANISM Foa TEXTILE
SLIVERS on Rovmos
John Frederick Jackson, Pawtucket, it. 1., as
signor to H & B American Machine Company,
a corporation of Maine
Application June 16, 1937, Serial No. 148,524
3 Claims. (01. ’19_1s1)
This invention relates to drawing mechanisms
for textile slivers or rovings; and has for one of
its objects the provision of an improved con,structionlof drafting apparatus utilizing belts
5 or aprons in which each of the individual belts
or apronsemployed for supporting and carrying
the'strand of sliver or roving from one pair of
drawing rolls to another, are of an endless construction.
10
I
a
1
all the belts may be applied in an endless form.
Another object of the invention is to provide a
sliver feeding mechanism of the above type which
is removable bodily as a unit from its support
on the machine whereby the endless belts serve 5
solely tofmaintain the parts in assembly when
the unit is taken out of the machine.
With these and other objects in'view, the in
vention consists of certain novel features of con
Another object of the invention is to provide
simple and improved support means for guiding
the belts whereby they may be easily removed
‘and replaced at will without interrupting the
normal operation of the other sections of the
struction, as will be more fully described, and 10
particularly pointed out in the appended claims.
In the accompanying drawings:
Fig. 1 is a vertical sectional view looking at the
end of the drafting rolls, and showing the roll
' ' machine or necessitating stoppage of the com-
stand in which there is applied thereto and posi- 15
plete machine with the consequent loss of production and expense which has heretofore been
the case during use of the prior art belt mechanisms employing belts or aprons the ends of
go which are cemented together after being put in
tioned in operating position one form of unit
drafting mechanism embodying my invention;
Fig. 2 is a‘ front longitudinal sectional view
taken on the line 24-2 of Fig. 1 showing my feed
ing device 'and‘with their rotatable members for 20
place.
'
driving the belts and the manner in which the
Another object of the invention is to provide a
device which'is readily attachable and detachable
on. the machine and applied between adjacent
25 pairs of drawing rolls whereby the assembly of
latter are vdriven;
'
i
'
'
- Fig. 3 is a front longitudinal sectional'view
taken on the line 3—3 of Fig. l;
>
Fig. 4 is a longitudinal. sectional view taken on 25
endless belts and their associated rotatable driv-
the line 4-44 of Fig. 1;
ing' members may be bodily removed as a complete unit from the machine.
'
Another object of the invention is to provide
I Fig. 5 is a perspective View of a belt mecha
nism embodying my invention;
' FigfG is a' perspective view of one of the side
39 a-unit device containing endless feeding belts,
driving ‘members, and a guide support therefor
that’ is so constructed to be completely devoid
of ‘any mechanism requiring attachment to 01'
having embracing relation with a ?xed driving
35 roll on the machine to be upheld thereby.
‘
plate members of the cradle frame;
Fig. 7 is a perspective view of the guide sup
port for the Upper and. IOWBI" belts;
30
Fig- 8 is a perspective View of the companion
side plate of the set of the cradle frame shown
in Fig. 5;
’
' Another object of the invention is to provide
Fig. 9 is a modified ‘form of side plate of a
a device of the above type constructed with a
plurality of sets of endless belts each set of
which has cooperating runs'between which the
cradle ‘frame which may be used in place of that
shown in Fig, 6; and
"
Fig- 10 is a modi?ed form of guide Support for
40 sliver or roving travels in which the arrangement is such that one of the rotatable members
for driving one of the belts of each set has positiveldriving connection with a single elongated
continuous drive shaft disposed beneath the parin on ticular driven rotatable member for the respective belt.
'- Another object of the invention is to provide
a‘ device so constructed that spaced sets of guide
supports are provided about which run the for50 ward bight ‘of each of the endless belts travels
in ‘which the guidesupports of each set are carried by separate cradle frames which guide the
movements of each set of belts and are detachably supported solely by the removable rotatable
55 cylinder members for driving the belts whereby
the ‘upper and lower belts and adapted'for ‘use
with the side plate ShOWn in Fig- 9
Heretofore, in the construction and operation
of the Common forms of apparatus of this class
utilizing endless belts 01’ aprons, Such members
have been usually guided and supported by a
frame or cradle having side plates for con?ning
the belts and rigidly J‘Oined tOgetheI‘ by Suitable
rods and guide bars ‘00 provide a unitary Struc
ture. This frame or cradle, furthermore, is com
monly provided with a pair of detachable bars or
rods at its forward portion over which the front
loop of the belts is guided in close proximity to
the drawing rolls. However, in the machines
employing this prior arrangement the lower roll
carrying the bottom belt has. usually consisted of
35
40
45
50
55
2
2,132,299
a single elongated ?uted roll which ordinarily ex
tends substantially the entire length'of the ma
chine and is made up of a series of sections joined
together at their ends for driving connection.
The upper roll usually is short and formed with a
pair of spaced belt engaging portions, this roll is
loosely mounted at its ends in the usual cap bars
and consequently is easily removable therefrom
to permit insertion in the loop of the upper belt,
10 which thus may be initially made endless by
cementing of the ends together. Owing to the
great length and unitary construction of the
lower roll around which the bottom belt runs, it
is impractical to employ a previously fabricated
15 endless apron or belt in this location, thus mak
ing it necessary to cement the ends of the belt
in place each time it is renewed, which process
requires stopping the machine with the attendant
loss of production; and in order to provide a con
20 struction which is particularly suitable for such
drafting apparatus and to improve and simplify
such belt mounting construction, I have pro
vided a unit device of a “?oating” type of con
struction employing an exterior driving roll for
25 the belt cylinders and wherein a plurality of
pairs of belts are arranged separated in spaced
positions with each pair in cooperating relation
and guided between a cradle device so arranged
that the side plates thereof guide the belts against
30 lateral slipping and carry the guide supports for
the forward loops of the belts, in which such
cradle is constructed to receive and be supported
entirely by the insertable driving rolls for the
endless belts and not to rest on and be carried
35 by any single ?xed continuous roll extending the
entire length of the machine, as has heretofore
been the previous arrangement with the result
that endless belts could not be used on‘the lower
roll, thus preventing the raising and removal of
40 the entire assembly as a unit; and the following is
a more detailed description of the present em
bodiment of this invention, illustrating the pre
ferred means by which these advantageousre
sults may be accomplished:
45
‘
With reference to the drawings, I6 designates
one of a series of spaced roll stands which is
well known construction in the art each having
The rolls I3 and I6 are each of a sectional con
struction in which a plurality of short sections
are keyed together at their ends to provide a sin
gle continuous elongated shaft which is jour
naled at a plurality of intervals in the roll stands
and extending the entire length of the machine,
as usual, the rolls being positively driven at dif
ferent speeds by suitable gearing (not shown)
at the end of the machine, at rates whereby the
draft on the yarn, sliver or roving between the 10
successive rolls is increased. The rolls I3 and
I6 are each formed with ?uted portions 20 and
2| respectively, at intervals along their length
and are alternately arranged in spaced relation
with smooth cylindrical spacing portions (not
shown)’ of a lesser diameter therebetween, as is
the common construction in the art.
A driving roll 24 also in the form of asingle con
tinuous shaft of similar elongated sectional con
struction as the lower rolls I3 and I6 andextending 20
the entire length of the machine, is provided at
intervals with a plurality of spaced bearing por
tions 25 which are journaled in the forward re
duced portion of the block‘ I5 in the roll stands.
By loosening the nut IS, the rolls I6 and 24 being 25
journaled in the common bearing block I5 thus
may be moved with the block and simultaneously
positioned at desired adjusted‘distances towards
or from the lower front roll I3.
Positioned on
the driving roll 24 between the successive bear
30
ing portions 25 and at spaced'intervals there
along are a plurality of enlarged hubs 28 and
29 which, as shown in Fig. 3, form a rest or sup
port members for purposes which will hereinafter
be described. Located at intervals on the driv 35
ing roll 24 and between the pair of hubs 28 and
29 is positioned an enlarged fluted hub portion
or gear 30, the diameter of this gear being greater
than the diameter of either of hubs 28 and 29,
and employed for purposes to presently appear. 40
This gear and the hubs 28 and 28 may each be
formed integral with the shaft of the roll 24 or
they may comprise separate parts which are ?xed
in position on the roll. As illustrated in Fig. 2,
the driving roll 24 is located below the line of 45
travel of the fibers of sliver or roving, which is
designated at S by the dot and dash lines so as to
a standard I I provided with a suitable base por
tion (not shown) whereby each of the stands may
be rigidly mounted on a suitable support of the
be tangent to the peripheries of the ?uted por-’
frame of the machine. As shown’ in Fig. 1 each
roll stand is provided with a top platform member
mit my particular belt mechanism which will
presently be described and embodying the pres
ent invention, to be mounted above the driving
roll 24 and in a superposed cooperating relation
thereto without changing the relationship of the
line of travel of the yarn, as indicated by the
broken line S, whereby the latter may travel be
tween the cooperating surfaces of a pair of juxta
posed belts of my intermediate belt unit.
'As shown. in Fig. 2 of the drawings, the block 60
I5 has a rearward extension 30 thereon in which
is mounted a pivot rod 3I to which may be ?xed,
I2 having its forward end extending upwardly to
form the usual journal for the front bottom rolls
55 I3. At the rear of each of the roll stands and
on the platform I2 is adjustably secured a bear
ing block l5 on which is journaled the bottom
back roll IS. The rolls I3 and I6 may be formed
either with a smooth cylindrical outer surface or
60 of a ?uted construction, as desired.
This block
I5 is formed at its bottom with a suitable longi
tudinally extending channel for inter?tting seat
ing engagement with a cooperating tongue por
tion on the upper face portion of the platform I2
65 of the roll stand, as is the usual construction in
the art.
The forward portion of this block I5 is
of reduced thickness and at the rear of this
portion is a bolt I‘! the lower end of which ex
tends through a slot I8 formed in the platform I 2
70 of each roll stand and having a nut I9 threaded
thereon .and engaging at its upper end the lower
face of the platform I2, as is well known con
tions 20 and 2I of the lower rolls I3 and I6 re
spectively, and the arrangement is such as to per
as by suitable set screws, a plurality of cap bars
33. Ordinarily, there are more cap bars than roll
stands, a cap bar being provided for each roll 65
stand I0 and others being positioned intermediate
of the stands, the bars being arranged for for
ward pivotal swinging movement over the‘ rolls
I3 and I6. As illustrated, each cap bar is of ex
tensible construction, it being ‘formed of two sec; 70
tions 34 and 35, and connected by a telescopic’rod
36.
The rear section 34 is shown as being pro
struction in the art, for permitting adjustment
vided with oppositely disposed vertical arranged
of the block I5 and the lower back roll I6 to
channels or slots 31 having open ends at the top
face of the cap bar and extend downwardly there 75
75 wards and from the lower front roll I3.
3
21,132,299
from for loosely receiving trunnions or journals
38 at. the ends of the rear upper rolls 49. The
channels 31 may be provided as. a deep cut in the
top face of the arms 33 or in the opposite side
faces thereof as separate channels extending in
wardly from the sides of the cap bar arm, in
which latter case they extend in a vertical direc
tion throughout the entire depth of the-arms.
Similarly,.the front section 35 is provided with op
positely disposed vertically arranged slots M po
sitionable above the lower roll l3 and form guides
for loosely receiving the trunnions or journals 42
of the front top rolls 43, the rolls 49 and 43 being
formed with spaced sections (not shown) which
ii.
are customarily providedv with a leather or cork
outer covering and adapted to rest upon the un
I
tit 34
... .
derlying ?uted sections 29 and 2! of the bottom
rolls l3 and M respectively.‘ The above described
parts ‘have been shown in their conventional ar
rangement without the usual weighted saddle
means for properly weighting the upper rolls 49
and 43. and maintaining them in place, as is well
known in the art, such means forming no partic
ular feature of the present invention. At a point
intermediate these channels 3? and ill the cap
bar 33 is thickened as at 55 to provide a lug which
extends downwardly into close proximity to the
lower drive member 24, and vertical channels I16
formed in this lug 45 are oppositely disposed and
extend throughout the entire depth thereof at a
location above and in vertical alignment with the
axis of the driving roll 24. These channels 46
and 59 form guides in which ride and are loosely
supported the trunnions of the front belt guide
members and the belt driving rolls of my draw
ing mechanism, as will be presently more fully
described.
' As illustrated in the drawings, there is shown
disposed between the sets of nip rolls one form
40 of apron or belt mechanism for feeding and con
ducting the sliver or roving to the drawing rolls,
and according to the present invention it com
prises a pair of endless belts or aprons 5i and 52
which are positioned on to encircle a pair of rotat
Wi able driving cylinders or rolls 54 and 55 respec
tively, each of which belts has insertable within
its loop its. respective driving roll while the for
ward end of the belts 55 and 55 are positioned
about and run over a'pair of front guide members
51 and 58 respectively. The rolls 54 and 55 for
the upper and lower belts have provided at each
end journals or trunnions 65 and GI respectively,
‘ adapted to loosely fit within and be removably
mounted for sliding and rotary movement in the
vertical slots 46 formed in the oppositely disposed
faces of adjacent cap bar arms 35. The rolls 54
and 55 are of similar construction of which the
former is an idler roll, while the latter is adapted
to be positively driven by the roll 24, the rolls 54
and 55 each are provided with a pair of spaced
belt-driving sections 52 and 63, and an intermedi
ate hub section 55 of reduced diameter, said sec
tions 62 and 63 each being formed with cylindrical
end portions 65, 65’ between which lies an inter
mediate portion 65 which is provided with a
roughened surface formed either by‘ knurling,
milling or ?uting the same. Located intermedi
ately between the belt driving sections 52 and S3
of the lower roll 55 is a driving hub or gear 58
70 which is of approximately the same diameter as
that of the belt driving sections of this roll so as
to be adapted for intermeshing with and have
positive driving connection with the driving gear
29 of the lower elongated driving roll 24 when
75 the belt mechanism assembly is mounted in
proper operating position in the machine, as will
be hereinafter described.
As illustrated, the guide frame for each set of
belts 5! and 52 is loosely mounted on the lower
rotatable cylinder member or roll 55 and com
prises a pair of side plates ‘l9 and ii and which
may be connected by suitable strut members (not
shown) and rigidly secured to the side plates to
provide a unitary structure. The bottom edges of
each of the side plates 75 and H are recessed, as 10
indicated at ‘M and 15 respectively, so as to» per
mit them to ?t over and embrace the reduced
portions 55 and 77 respectively, of the lower roll
55 employed for driving the bottom belt 52. The
side plates in and ‘II also have their top edges Ii
provided with upper recessed portions 79 and 89
to loosely receive and locate the top rotatable
cylinder member or roll 5! by which the upper
belt 5| is driven.
'
The side plates 19 and ‘H each have positioned 20:
at their front portion a pair of guide bars 51 and
58 for the forward loops of the belts and which
extend laterally between adjacent plates of each
set and are integrally secured thereto in any suit
able manner, as by screws 8!. Provided at the 25
ends of each of the guide bars 5'] and 5B, are the
projections 89 and 85 and are each formed with
?at top and bottom faces which ?t into a pair of
spaced notches 86 and 81 having flat walls and
formed by slotting the front end faces of each of 30
the plates "l9 ‘and ‘ii. The guide bars 57 and 58
after having their projections 84 and 85 inserted
in place in the notches 86 and B‘! respectively are
thus positioned in spaced relation one to the other
and are encircled by the forward loops of the
belts 5i and 52 respectively, as shown in Fig. 5.
The rear face of the plate 19 is provided with a
rearwardly projecting hook portion 39 to receive
the journals or trunnions at the ends of a clearer
roll 39 to engage the outer surface of a plurality 40
of lower bolts 52.
In. accordance with this construction, the
screws 85 at each end of the guide bars thus
rigidly secure them to the side plates 79 and ‘H so
that the entire assembly may be simultaneously 45
withdrawn as a unit from the cap bars 33.
As shown in Figs. 7 and 9, the guide bars 57 and
55 are each formed of relatively wide bar stock
the front or leading edge of which is beveled and
curved in order to provide a smooth tapered 50
rounded surface over which the inner circumfer
ence of the forward run of each of the belts
travels. The guide bars 5] and 58 are shown as
being of similar construction and thus may be
interchangeable one with the other in the side 55
plates ‘it! and ‘l i. The spacing between the guide
bars 5'! and 58 always should be, however, sub
stantially greater than the thickness of the belts
5i and 52 so as to accommodate the regular pas
sage of the sliver or roving between the cooperat 60
ing surfaces of the belts without preventing the
proper functioning of the latter.
Referring to Figs. 10, 11 and 12, the construc
tion there shown comprises a modi?ed form of
cradle device embodying my invention in which 65
the side plate 99 corresponds to the side plate 19'
of the other device previously described, but in
the modi?ed form the front edge of the side plate
99 is shown as being provided with a projection
9| having shoulders 92 and 93 for positioning a 70
pair of guide bars 95 and 96, the ends of the lat
ter being provided with projections 97 and 98,
and the bottom and rear faces of the projections
91 and the top and rear faces of the projections 98
meeting rearwardly at a right angle corner 76
4
2,132,299
whereby they may be positioned into seating en
gagement in a right angular corner provided by
the front edge portion and the shoulders 92 and
93, above described. When so mounted the pro
jections 9!" of the plates 90 serve to space the
guide bars 95 and 96 so as to provide sufficient
clearance for cooperating movement of the belts
5! and 52 respectively. The other side plate (not
shown) in each set and employed in the modi
10 ?ed construction of the apparatus will be formed
similar to the inner side plate ‘H shown in Fig. 9,
as previously described, but will differ therefrom
' 2. In a drawing mechanism for textile slivers or
rovings utilizing a pair of endless belts disposed
one above the other in cooperating relation for
conducting the slivers or rovings, and upper and
lower removable rolls driving the said belts, the
combination of a frame for laterally guiding the
belts composed of spaced parallel side plates unit
ed together into a rigid unitary structure by two
cross-bar guide members for internally guiding
the front loops of the belts, said plates having top 10
and bottom recesses to detachably receive said
rolls in parallel cross-wise relation between said
in that the front edge portion will be provided
side plates, said cross-bar belt guiding members
with the projection 91, as shown in the modi?ed
being detachably secured at their opposite ends
15 construction of plate shown in Fig. 10, in place of
the slots 86 and 81.
It will thus be apparent that in accordance with
the present invention, a construction of feeding
device of the belt type is provided which has con
20 siderable advantages over any of the prior art
to said side plates in spaced relation at the front 15
edge portions thereof, the opposite ends of each
of said cross-bar members being provided with
longitudinal projections having inter?tting rela
tion with shoulders formed on the front edges of
said side plates, each of said cross-bars having a 20
constructions commonly employed in the art, the
arrangement of the present invention being such
as to permit the belt driving rolls 4'! and 48 to be
forwardly tapered front edge portion to engage
removed simultaneously from its support in the
rolls therefor in assembled position in the recesses
in said frame to form a unitary demountable
mechanism.
3. In a drawing mechanism for textile slivers
or rovings utilizing a pair of endless belts dis
25 cap bar and to enable insertion or withdrawal of
both cradles and the associated belts and guide
bars and driving rolls as an entire unit assembly
without the necessity for either stopping the com
plete machine or of severing the lower belt as has
heretofore been the practice.
The foregoing description is directed solely to
wards the construction illustrated,>but I desire it
to be understood that I reserve the privilege of re
sorting to all the mechanical changes to which
35 the device is susceptible, the invention being
de?ned and limited only by the terms of the
appended claims.
I claim:
1. In a drawing mechanism for textile slivers
40 or rovings utilizing a pair of endless belts dis
posed one above the other in cooperating relation
for conducting the slivers or rovings, the com
bination of a frame for laterally guiding the belts
composed of spaced parallel side plates united
together into a rigid unitary structure by two
cross-bar guide members for internally guiding
the front loops of the belts, said cross-bar belt
guiding members being detachably secured at
their opposite ends to said side plates in spaced
60 relation at the front edge portions thereof, the
opposite ends of each of said cross-bar members
being provided with longitudinal projections hav
ing inter?tting relation with shoulders formed
on the front edges of said side plates, each of said
2.! Cal cross-bars having a forwardly tapered front edge
portion to engage the inner circumferential sur
face of an endless belt.
the inner circumferential surface of an endless
belt, said belts serving to maintain the driving
posed one above the other in cooperating relation,
the combination of a pair of spaced parallel arm 30
members hingedly mounted at one end for move
ment to and from a horizontal position with op
posed channels, one in each of the oppositely dis
posed sides of said arm members, said channels
being vertical longitudinally in the horizontal 35
position ofsaid arm members, a pair of rolls driv
ing the said belts and removably supported at
their ends one above the other in said channels
for rotation therein, a frame for laterally guid
ing the belts composed of spaced side plates unit
ed together into a unitary structure by two cross
bar guide members‘ for internally guiding the
front loops of the belts, said plates having top and
bottom recesses to receive said rolls and be
mounted thereon, said cross-bar members being 45
detachably secured at their opposite ends to said
side plates in spaced relation at the front edges
thereof, each of said cross-bar belt guiding mem
bers having a forwardly tapered front edge por
tion to engage the inner circumferential surface
of an endless belt, said belts serving to maintain
the driving rolls therefor in assembled position in
said frame to form a unitary demountable mech
anism removable as a unit from the channels in
said arm members.
JOHN FREDERICK JACKSON.
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