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Sept. 10, 1946;
I
'
R. H. CARHART
‘
2,407,397
FABRIC TAKE-UP AND TENSION MEANS FOR CIRCULAR KNITTING MACHINES
Filed Jan. 21, 1944
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I
1 3 Sheets-Sheet 1
sep? 1o, 194s.v
R. H. CARHART
_
2,407,397
FABRIC TAKE-UP AND TENSIONIMEANS FOR CIRCULAR KNITTING MAOHINESv
FnQd'Jan.’ 2'1,’ 1944
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.S'ept;.10,1946.
RH, CARHART
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2,407,397
FABRIC TAKE-UP AND~TENSION\IEANS FOR/CIRCULAR KNITTiNG MACHINES
'
mm Jan. 21, 1944
a Sheets-Sheet :s
2,407,397
Patented Sept. 10,‘ 1945
- U
NITED ‘STATES ’ PATENT agOFF-lCjE, 1
2,407,397
FABRIC TAKE-UP AND TENSION MEANS. FOR
CIRCULARv KNITTING MACHINES
Raymond H. Carhart, Philadelphia, Pa., assignor
to H. Brinton 00., Frankford, Philadelphia, Pa“,
a. corporation of Pennsylvania
Application January 21, 1944, SerialNo. 519.174
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4 Claims. (01.‘ {is-149).~
2 .
1
My invention relates to combined fabric take
up and tension means for, circular knitting ma
chines, the same being directed mainly to knit
ting machines of the type having a- stationary
needle cylinder and a rotary cam ring, but not
necessarily limitedto that type, and. it is an ob
ject of the invention to provide means of the
character indicated, which shall be simple and
inexpensivein construction, positive in opera
tion, and not liable to get out of order.
7 Another object is to provide in one unit a
fabric take-up, a tension control, and a fabric
reel, all located underneath the machine so as‘ to
require'no additional floor space. and where at
the same time it is readily accessible.
Various devices have been proposed. for main-'
taining a fabric under tension while being
knitted, and for winding or otherwise collecting
the fabric during the-knitting operation. Thus
it has been. proposed. to provide, in circular knit
ting machines of; the stationary needle cylinder
type, take-up tension rollers below the cylinder
in combination with a reel located off to one side
of the machine. An important. objection to this
is the excessive floor space required. Another
familiar expedient is to provide such rollers close
andwith square ends, the ‘shape of such ajroll.
being due largely to, the closely controlled tengf
sion. and .- to the. use. of effective means for
holding. the. tubular fabric in well-spread-out .po
sition as it approaches the cloth r011;
.
Another object is toprovide reeling means such
that theroll of fabric will automatically remove
itself. from the machine. when the roll of‘ cloth
reaches a predetermined diameter.
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~
Still. anotherv object is to provide reeling means
so constructed and arranged that the periphery
of the roll of cloth approaches the floorjas
the roll grows larger, wherebythe roll becomes
easier to handle as it increases in size and weight,
since length of the. lifting and lowering move
ments necessary to remove it from the machine
and to- place it‘ on- the floor or other support dee
creases, with increasing size of the cloth r-oll.
Referring to the. drawings, which are made a
party of this application and in which similar ref
erence characters indicate similar parts:
Fig. 1, is a perspective of the lower portion of a
circular knitting machine having my improved
take-up applied thereto,
Fig. 2, a side elevation of the take-up, viewed
from the right in Fig. 1,
Fig. 3, a rear elevation of the take-up, with
to the bottom of the needle cylinder, the cloth
parts omitted,
being permitted to accumulate beneath the ma
Fig. 4, a detail view, showing on a larger scale
chine, either in a basket or the like, or directly
certain
parts also shown in Fig. 2,
on the ?oor, and. being cut off and removed at 30
Fig. 5, a section on line 5-5 of Fig. 2, showing
suitable intervals. This is quite unsuitable for
gearing forming part of the invention,
wide fabric such as knitted on. body machines,
Fig. 6, a section on line 6—-6 of Fig. 4,
though used for narrow fabrics; such as string
Fig. 7, a detail illustrating the relative positions
work hosiery. Other expedients have been pro
of eccentrics at opposite sides of the machine
posed, but are open to various objections, one of
for driving, the take-up, and
I
the principal objections to many such devices
Fig. 8, a section on line 8-3 of Fig. 3.
being. that the machine must be stopped when
. In the drawings, reference character In indi
ever fabric is removed therefrom. Another ob
cates generally the base-plate of a circular knit
ject of my invention therefore is to provide sim
ting machine in which there is knitted a fabric
ple and easily‘ operated means for removal of
indicated at H, which is wound on a fabric roll
either a full wound roll of cloth or a partially
l2v to form a wound mass 13.
?lled roll.
The. roll i2 is provided at its ends with gud
Another object, of my invention is to provide
geons. l4 that are adapted to travel along inclined
combined fabric tensioning and reeling means
directly underneath the needle cylinder of acir 45 flanges 15, projecting inwardly from brackets 16
forming parts of, or secured to, the. main frame
cular knitting machine, so constructed and ar
to. Slots, in the; brackets can, of course, 'be sub
ranged that the maohine‘can knit continuously
stituted for the ?anges l5, if preferred. It will
and that a ?lled or partly ?lled roll of cloth
be evident that the roll of cloth can easily be
can be removed without stopping the machine.
liftedout
of‘the machine when’ desired and an
50
.Another object of the invention, is to maintain
empty fabric r011 l2 can be moved down along
a'close control on the tension of the cloth being
knitted.
I
,
Anotherobject of the inventionis to wind the
?anges If! to the lowermost position, indicated
in dotted lines in Fig. 8, to be ?lled in the subse
quent operation of the machine. When the roll
exceptionally uniform mass of cloth, evenly laid 55 of. cloth becomes of suflicient size so that the
cloth on a roll in such manner as to make an
3
2,407,397
gudgeons ride over the ends of the ?anges |5, IS,
the entire wound mass will automatically roll out
on the floor and can then be separated from the
cloth remaining in the machine and replaced by
an empty fabric roll.
The cloth is guided in its path from the needles
to the take-up roll by means of cloth guides, such
4
drive rollers for taking up and tensioning the
cloth. The roller 40 aids in tensioning the fabric
evenly and ?rmly and in guiding the same to the
fabric roll. Roller 40 is driven in constant rela
tion with roller 2| by means of meshing gears 4|,
42, on the respective rollers.
' In order to maintain a close control on the
as the pairs of guide rollers at l1 and 20. A
fabric it is desirable to provide for stepping the
spacer I8 is shown as connecting the brackets l6,
fabric roll around between impulses received from
but it has no guiding function,
10 that pawl and ratchet means which is best shown
For driving the fabric roll I provide means
in Fig. 2, and therefore I have provided an ad
including a friction roller 2| against which the
ditional pawling means at the other end of the
fabric roll bears as shown in Fig. 2, this rollerbe
fabric roll, as shown in Figs. 1, 3 and 7, this in
ing driven from a shaft 22, which may be the
cluding another pawling means having a pawl
main shaft of the machine, by means of an ec
‘ 32’ on a lever 35’ operated by links 24’, 25' from
centric 23, a connecting rod formed in two parts
an eccentric 23' which is set at an angle of 180°
24 and 25, and a pawl and ratchet mechanism
from the ?rst-named eccentric, so as to rotate
operated by said rod. The two parts of the con
the fabric roll stepwise While the pawl 32 is being
necting rod are yieldingly connected by means
moved down preparatory to re-engagement with
including abutments 26 and 21. clamped to the 20 the ratchet. The parts for the second operating
upper member 24 by screws 29, 29, said abutments
means (best shown in Fig. 1) are otherwise iden
being slidable on the lower member 25, a collar
tical with those of the ?rst operating means ex
28 ?xed to the lower rod member 25, and a spring
sent that the pawls appear in reverse position as
30 on said member 25 between the abutment 21
seen in said ?gure, being operated by a shaft 22'
and collar 28. Preferably the abutment 26 is
that is driven'by gear connections to the cam
?xed in place, as by pinning it to rod section 24,
ring, or in some other convenient manner, and
whereas the abutment 21 is adjustable up and
therefore no further or more speci?c description
down on said rod section, ‘the screw 29 acting as
is deemed necessary.
a set screw, or a rivet being substituted for it.
In the enlarged View of Fig. 8, cloth spreaders
It will be evident that when the rod section 24
t5 and 46 are shown as arranged immediately
moves downward the abutment 26 will move
above the respective pairs of guide rollers l1 and
without any effect on the rod member 25 until
28. The use of such spreaders is not new in
abutment 26 strikes collar 28, after which the
itself, but by using two spreaders in succession
rod member and parts operated thereby will be
above each of two pairs of guide rollers it is found
actuated positively, whereas on the return stroke 35 that the roll of cloth is caused to be shaped very
the upper member moves positively with the ec
accurately, with square shoulders and ?at ends,
centric but only lifts the lower member yieldingly
through the spring 30 after the spring has been
whereby the roll retains its shape, and whereby
any wrinkles and the like are avoided in the
cloth on the roll. The spreaders are shown as
compressed sufficiently for the purpose. Thus a
full stroke of the pawl may rotate the fabric roll 40 being ‘made of wood, but metallic spreaders may
through only a small arc, or even not at all, de
be used. They may also be omitted, as in Fig. 2,
pending on the tension of the forming fabric and
but such omission is undesirable.
the position of the abutment 27 with reference
It will be evident that the roll of fabric may
to the spring 30.
ride over the ends of the guides |5, |5 when the
The pawl and ratchet mechanism at the side (A roll reaches a predetermined diameter, all with
of the machine shown in Fig. 2 comprises an os
out danger of injury to the cloth or of changing
cillatory lever 3| carrying a pawl 32 forced by a
the shape of the roll detrimentally, since the pe
spring 33 toward a ratchet 34, and a holding
riphery of the roll is close to the ?oor, and. in
pawl 35 serves to hold the ratchet against reverse
fact is closer to the ?oor when the roll is full than
movement. Suitable means for idling the pawls 0 at the beginning of the operation or at any inter
is provided, being here shown as including a disk
mediate stage in the winding. It is easy also to
36 at each side of the machine, said disks being
remove the fabric roll from the machine at any
suitably notched to expose parts of the ratchets
stage of the winding, since there is nothing to
for engagement by the pawls 32 and 35 when
uncouple or to be dismounted or disengaged, and
the take-up is to operate, but arranged to lift
nothing to interfere with‘ removal of the roll.
both pawls out of active position at desired times, OI Ul Although the wound mass of cloth does not pro
as when it is necessary to turn the roller 2|
ject to any considerable extent beyond the ma
backward manually to release the tension on
chine frame even when the cloth roll is full and
the cloth; e. g., when the cloth is ?rst put on the
about to roll o? the tracks l5, it can obviously
machine, or for convenience in replacing the
be reached easily by men standing near the
cloth on the needles after a press-on‘. For this 60 machine for the purpose of lifting the roll out of
purpose the disks 36 are rotated manually by
the machine.
means of bars 31 having hand grips at a con
It will be obvious to those skilled in the art that
venient height and extending down through‘
many changes may be made in the devices herein
guides 38 on the frame to their pivotal connec
0 disclosed, all without departing from the spirit
tion with the disks 36. The bars have pins 37"
of the invention; and therefore I do not limit
adapted to enter either of a pair of holes in the
myself to what is shown in the drawings and de
adjacent side member l6, as best shown in Fig
scribed in the speci?cation, but only as indicated
ure 1, showing the position of the parts when a
in the appended claims.
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pin 37" has been entered in the lower one of
Having thus fully described my invention, what
two such holes. The roller 2| is covered with
I claim is:
emery to cause it to grip the cloth on the fabric
1. In a knitting machine, a take-up for the
roll, and so is another roller 46 underneath which
forming fabric comprising a fabric roll, a roller
the cloth passes prior to its engagement by the
in frictional engagement with said fabric r011,
fabric roll 2|, 1. e., both rollers 2| and 40 are 75 pawl and ratchet means at each‘ end of said fabric
2,407,397
5
roll for driving said roller, the driving pawl of
.each of said means being constructed and ar
ranged to act on said roller while the other driv
ing pawl is making its return stroke.
2. A circular knitting machine comprising a
table, legs supporting the table, brackets at 09
posite sides of the table and each located between
a pair of legs, inclined tracks on said brackets
extending upward and forward to the respective
front legs of said pairs, a drive roller adjacent
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:
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said tracks leading upward and towardv one side
of the machine, a fabric roll underneath the nee
dle cylinder and supported by said tracks, and
means for driving the fabric roll in timed rela
tion with‘ the operation of the machine, said
tracks being constructed and arranged so that
the fabric mass will roll oif the tracks and onto
the machine supporting floor when the mass
reaches‘a predetermined size, and the driving
means being so arranged and constructed with
respect tothe roll and the tracks that the pe
riphery of said mass approaches closer to the
?oor as the mass approaches such’ predetermined
the lower ends of said tracks for driving a cloth
roll located on said tracks, the relation of such
parts being such that the periphery of the cloth
size.
wound on the cloth roll approaches the ?oor as
15 Y 4. A device as in claim 1, including independent
the roll increases in size.
manually-operable means for inactivating either
3. In a circular knitting machine having a sta
or both of said pawls.
tionary needle cylinder, the combination of in
‘
RAYMOND H. CARHART.
clined tracks at opposite sides of the machine,
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