US2747647A - Manufacture of fabrics having a tufted surface - Google Patents

Manufacture of fabrics having a tufted surface Download PDF

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Publication number
US2747647A
US2747647A US483635A US48363555A US2747647A US 2747647 A US2747647 A US 2747647A US 483635 A US483635 A US 483635A US 48363555 A US48363555 A US 48363555A US 2747647 A US2747647 A US 2747647A
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US
United States
Prior art keywords
arms
chain
spool
cam
tufts
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US483635A
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English (en)
Inventor
Brinton Esme Tatton Cecil
Lowe Harry Frederick
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Brintons Carpets Ltd
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Brintons Ltd
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Filing date
Publication date
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Publication of US2747647A publication Critical patent/US2747647A/en
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H11/00—Non-woven pile fabrics
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D39/00—Pile-fabric looms
    • D03D39/02—Axminster looms, i.e. wherein pile tufts are inserted during weaving
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing
    • Y10T156/1317—Means feeding plural workpieces to be joined

Definitions

  • This invention a continuation-in-part of United States Patent Number 2,711,777, relates to the manufacture of carpets and similar fabrics having a tufted surface.
  • the commonest method for the production of such fabrics is by means of a spoolv loom and, as described in U. S. Patent No. 2,711,777 the principle of the spool chain may also be employed in similar machines in which the tufts are secured to an adhesive-coated backing instead of being held in position by the normal weaving process.
  • each spool is given two separate components of motion by means of camfollowers working in appropriately shaped tracks .and mounted respectively on the axis of the spool and on a radial arm extending from the spool.
  • the object of the present invention is to produce a similar sequence of movements by means of an alternative form of mechamsm.
  • each spool is mounted in a'carrier, which while it-is passing through' the region in which the tufts are to be embodied inthe fabric, is 'engaged at points spaced apart inthe general' direction of movement by one of a number ofrpairsof arms, each of which slides in a substantially radialvslot ina rotary spider turning in synchronism with ⁇ the movement of the chain, the longitudinal position of each Yarm in its slot being controlled by a cam vrfollower on4 the arm which co-operates with a stationary cam track:
  • the movements'of all the spools in the vicinity'of the -point wherefthe tufts are embodied inithe fabric are controlled by successive pairs of arms with theresult that the ⁇ configuration of the length of chain infques-V tion is controlled by'the relative positions'of the successive pairs of arms, whilevthe angular position 'of each Acarrier is controlled bythe relative positions-of l
  • each spool canV thus be given the necessary composite motion lto pass itsrow of tufts throughv the sequence of stepsrequired torembody itin the'fabn'c. It will be appreciated that this operation does'notinterferee at all with the continuous movement off the chain, nor does it necessitate the removal of the spools from the chain so that-a high speed of operation is obtainable.
  • g Y Y v Preferably the points at which each carrier is engaged lie at the ends of the link of the chain to which it is secured so that the rocking movements are transmitted directly to' the link, and Ythe link itself is thus only required to move a small amount Vin comparison with the movement of the row of tufts.
  • each of the arms may beformed with a'U-shap'ed vjaw co-operating with a rollr'fof'or connected to ea'ch' spool carrier.
  • the cam tracks" are so shaped that ech'pair of arms moves up behind the Y will now be described ⁇ in more detail.
  • the trailing arm has the major controlling elfect on the motion of the spool as a whole, the leading arm serving mainly to produce the rocking movements.
  • the leading arm serving mainly to produce the rocking movements.
  • the jaw on the trailing arm may be iitted with a selflocking latch which engages and locks the roller in position and is freed by retraction of the arm into the spider shortly before it is due to disengage the roller.
  • the spider may conveniently comprise a central rotary plate formed on one side with slots for the leading arms of each pair and on the other side with slots for the trailing arms of each pair, the whole assembly turning between stationary side plates, one of which is formed with a cam track for controlling the leading arms, and the other of which is formed with a cam track for controlling the trailing arms.
  • the remainder of the machine may conveniently be constructed in substantially the same manner as that described in U. S. Patent No. 2,711,777.
  • Figure 1 is a side elevation of thefront part of the machine
  • Figure ⁇ 2 is a front elevation of the right-hand side of the machine; n n 'A Figures and 4 are a side View and a front view respectively of thechain carrying the spools; s
  • Figure 5 is a sectionalview of the spider mechanism for-controlling the composite motion of the spools; and Figure is a 'diagrammaticview showing the composite motionY inrnore detail.
  • V Y Y i Basically ,the machine is intended for the production of carpet by means ,of tufts secured to a backing of hessian vdrawn from a roll l.Y The hessian passes through a device, indicated 'generallyas 2, forcoating'it ,with adhesive, such as polyvinyl chloride, and 'it thereafter passes over a stationary electrode 3 co-operating with a reciprocating upper electrode not vshown in the drawings, but operating in the same manner as described in the earlier patent specification.
  • a device indicated 'generallyas 2, forcoating'it ,with adhesive, such as polyvinyl chloride, and 'it thereafter passes over a stationary electrode 3 co-operating with a reciprocating upper electrode not vshown in the drawings, but operating in the same
  • the tufts of yarn are laid on the backing material on the stationary electrode?, by means of successive spoolsV 4 carried by a continuously moving endless spool chain 5.
  • the composite movement necessary for the embodying of the tufts in the fabric is producedby means of a spider mechanism shown generally at 6'ancl illustrated in detail in Figures 5 and 6.
  • a spider mechanism shown generally at 6'ancl illustrated in detail in Figures 5 and 6.
  • the band of material then' passes over rollers 25 and 26 and then over a large roller 27, the lowerV surface of which dips into the adhesive in a trough 28.
  • the band 10 is advanced step by step by means of mechanism similar to that shown in the earlier specication and not shown in the present drawings. As it moves forward each step so a row of tufts is laid in position and is anchored by the descent of the upper moving electrode, the anchored tufts being raked into position by means of a raking mechanism also as described in the previous specification.
  • the main drive to the machine is provided by means of an electric motor driving a pulley 36 by means of a belt 37.
  • the pulley 36 constitutes the input to a variable speed gearbox 38, of which the output pulley 39 drives a further pulley 40 through a belt drive 41.
  • a handwheel 43 which can be used to operate the machine manually for purposes of adjustment.
  • the handwheel 43 is connected tothe shaft by means of a dog-clutch which is controlled so that, as the handwheel is engaged, the gearbox 38 is de-clutched and vice-versa.
  • a rocker shaft 44 (not shown in Figure 2)v is controlled by a handle 57, and rocking movements of the shaft cause forks 58 and 59 to engage and disengage the two clutches simultaneously.
  • the shaft 42 drives (through gearing not shown) a cam shaft 45 carrying a cam 46.
  • This cam controls the movements of a lever 47 pivoted at its lower end and at its upper end connected through a link 48 to a standard form of knife for shearing the tufts after they have been anchored in position.
  • the knife mechanism litself is not illustrated, but it will be understood vthat it lies immediately adjacent'the upper reciprocating electrode in much the same manner as illustrated in the earlier specification.
  • a shaft 52 which in its .turn drives a shaft 53 carrying a gearwheel 54.
  • the wheel 54 drives a chain 55, which Vis guided by idlers 56 vand provides the drive for the spool chain 5 .at the rear of theV machine.
  • the shaft 53 provides the main drive for the spider mechanism 6 to be described in detail later.
  • the shaft 45 also drives through spiral gearing .60 a shaft 61 extending across the width of the machine.
  • This shaft 61 carries a cam 62, which is duplicated on the .other side of the machine Vand which controls the reciprocation of the upper electrode.
  • the cams 62 are provided with cam tracks 63, which control cam followers 64 connected to push rods 65, which in their turn support theupper electrode.
  • This is mounted for Y adjustment Yby means of nuts 66 screwed on a threaded portion of each push rod 65 between vthe limbs of a C-shaped casting 67, which itself is connected t'o the upper electrode.
  • the shaft 61 also drives a half-speed cam 70, -Vwhich is mounted on a sleeve 71 turning on the shaft 61.
  • the cam 70 controls the rocking movement of a rod 76 pivoted in the region of its centre and connected at its lower end to a connecting rod 77.
  • This connecting rod in its turn serves to rock an arm 78 pivoted to the frame of the machine at 79.
  • the top of the arm 78A is pivoted through a lost motion connection 80 to a corresponding upper arm S1 pivoted to the frame of the machine at 82.
  • This mechanism is to pull out a fresh length of yarn from each spool as it passes along the horizontal lower reach indicated in chain dotted lines at 90.
  • the cornposite motion which has to be produced by the spider mechanism 6 is correspondingly simplified and moreover the brake mechanism itself is also simplified since it has a greater amount of space in which to work.
  • the application of the brake mechanism and the opening and closing of the gripper mechanism is controlled by means of pneumatic pressure, which must, of course, be applied in synchronism With the rocking of the arms 78 and 81 under the control of the cam 70.
  • the sleeve 71 accordingly carries four further cam surfaces indicated generally at 91 which control respectively four switches 92 Vwhich in their turn control solenoid valves in the compressed air supply. In this way the operation of the brake and gripper mechanisms is synchronised with the remainder of the machine.
  • each carrier 101 supports a spool 4 shown only diagrammatically in Figure 3, the spindle of the spool being received in a seating 103.
  • each carrier 101 bears a gate member 104 formed with partitions through which the ends of the yarns wound on the spool are led olf.
  • Each spool has its individual brake 105 provided with a brake shoe 106 bearing against the ange of the spool.
  • the brake 105 rocks on a spindle 107 extending along the length of the spool and the brake is urged into contact with the ange of the spool by means of a coiled spring 108.
  • each brake 105 is formed with a small lug 109 by means of which the brake can be lifted while a corn.- mon brake is being applied to the yarns on the spool as described in detail.
  • each link 100 are provided with bowels or rollers 109 and 110 respectively which are concentric with the pivots between the ends of the link 100 and the adjacent links 102.
  • each link 100 can be rocked by gripping the rollers 109 and 110, thus leading to -a corresponding rocking movement of vthe carrier 101 and of the associated row of tufts held by the gate lmember 104.
  • rollers 109 and 110 run in guide tracks 1111 in horizontal members 112 as seen-in Figure 5, which is a view from the opposite side to Figure 1. These guide tracks serve'to steady the spool carriers and their associated spools over this portion of the circuit. As the rollers 109 and 110 approach the end of the guide tracks 111, they are engaged by the spider ,mechanism 6.
  • Theplate 120 is formed on oppositeV sideswith a series of slots 121 for the reception of arms, :those lying in front of the plate 120 -in v Figure 5, being showmas 122, while those lying behind vthe plate V120 .are shown as 123.
  • the arms 122 and 123 are each formed on their leading edge with a U-shaped jaw 124 and 125 respectively, the jaws ⁇ of a pair of arms being spaced-apart circumferentially by 'a distance approximately equal to the distance between the rollers 109 andl 110 on the links 1 00 of the chain.
  • Each of the arms 122 and 123 is provided with a cam follower 126 co-operatingy with a stationary cam track.
  • These cam ⁇ tracks are formed in a pair of side plates, one of whichis shown at 127 and the other of which is removed as shown in Figure 5.
  • the cam followers of the arms 123 co-operate with a track 130 which is shown dotted where it is hidden by the plate 120, while the cam followers of the arms 122 co-operate with a cam track 131, which, as seen in Figure 5, is coincident with the cam track 130 over the greater part of the circle, but which diverges from it between the points A and B where it is shown by chain dotted lines.
  • the radius of the cam tracks 130 and 131 begins to decrease until when the point F is reached, the radius is such that the jaws 124 and 125 are travelling at the same speed as the chain, and full engagement of the trailing arm (which cannot be seen) is reached at this point. This continues as far as point A and provides a constant velocity pull for the chain passing the brake and gripper mechanisms previously referred to. During this time there is a clearance between the roller 109 and the jaw 124 which only disappears at A in readiness for rocking movement of the links of the chain.
  • Each of the jaws 125 on the trailing arms 123 is provided with a self-locking latch, one of which is seen at 140, the corresponding arm 122 being broken away for the purpose since these latches are normally invisible.
  • Each latch is pivoted at 141 and is provided with a small leaf spring 142 which rocks it into the position shown. As the arm 123 catches up with its corresponding roller 110, the roller engages a heel portion 143 of the latch, rocking the latch against the action of its spring until the roller is nnly in the jaw 123, when the latch rocks back again and then prevents the withdrawal of the roller. After the point F, the trailing arms 123 have the major controlling eifect on the spool carriers 101 and the latches 140 thus ensure that the rollers are firmly engaged by the jaws 125.
  • the two cam tracks 130 and 131 turn inwardly, serving to withdraw each pair of arms so that the jaws 124 and 125 are moving more slowly than the main body of the chain. This continues between the points A and B and since the chain here is moving more slowly, a certain amount of slack is introduced which enables the links 100 to be rocked so as to give the spool carriers 101 the necessary movement for embodying the tufts shown as 145 in the carpet.
  • the track 130 turns inwardly very slightly more than the trackV 131 so that the leading jaw 124 is moved very slightly to the right in relation to the trailing jaw and the spool carrier Vshown as 101e is given a slight clockwise rotation.
  • the tracks and 131 cross at thepoint shown asX, seen most clearly in Figurel 6, and the tracks 131 turns inwardly, moving the leading jaw 124 to the left in relation to the trailing jaw 125, and givingthe spool carrier a rocking movement in a counter-clockwise direction
  • the spool carrier seen as 101d has its row of tufts inclined upwardly.
  • the track 130 turns inwardly again to cross the track 131 at Z and gives the spool carrier a clockwise rocking movement.
  • This clockwise rocking movement combined with the general upward movement of the chain momentarily holds'the tufts 145 stationary on the backing, and during this instant the upper electrode descends and the knife comes into operation to shear the row of tufts.
  • the clockwise rocking movement stops and the spool carrier proceeds upwardly in approximately the same attitude as seen at 101e.
  • the track 130 inclines inwardly until once again it coincides with the track 131, after which further rocking movement of the spool carriers ceases.
  • the jaws 124and 125 continue in engagement with the respective rollers 109 and 110 until the point C is reached when both arms are withdrawn into their slots by a single step.
  • This withdrawal has a dual effect.
  • In the first place it rocks each of the latches in a clockwise direction owing to engagement between the latch and the side of the slot 121 in the rotary plate 120.
  • each pair of arms continues along a constant radius path until the point D is reached when the cycle is again repeated and each pair of arms takes over the control of a fresh spool.
  • the spool chain may carry as many as several hundred spools so that a considerable period may lapse until the same spool returns once again.
  • the spool carrier is controlled solely by the shape of the two cam tracks 130 and 131. Any shaping of these tracks which results in a common movement of the two arms results in bodily displacement of the spool carrier and of the associated row of tufts, while any shaping of the cam tracks resulting in relative movement of the two arms of a pair results in a rocking movement of the spool carrier, and by a combination of these two possibilities the required composite motion of the row of tufts is produced.
  • the chain moves continuously throughout and there is, of course, no question of removing the spools from the chain.
  • the chain comprises a series of main links 100 separated by three intermediate links 102, these may be replaced by longer links with slotted lost-motion connections between them so that each link bears a spool carrier.
  • This simplies the construction of the chain and avoids any possibility of the links jamming together when it is required to produce slack in the chain for the purpose of rocking the spool carrier.
  • cam tracks are designed to produce a composite motion which is simplified by the omission of the step of pulling out the fresh lengths of yarn, which is carried out independently by the brake and gripper mechanism, the tracks can, of course, be designed to include this additional step.
  • firstV and second engagement means connected to each said mounting means, said engagement means being spaced apart in the general direction of movement of said chain, a rotating spider, driving connection means between said spider and said driving means, said spider being formed with a plurality of substantially radial slots in its opposite faces, a plurality of rst arms located for sliding movement in said slots in one face of said spider, each said iirst arm being shaped for cooperation With said rst engagement means, a plurality of second arms located for sliding movement in said s lots in the other face of said spider, each said second arm being shaped for cooperation with said second engagement means, a first cam-follower connected to each said first arm, a iirst cam-track cooperating with each said rst cam-follower, a second cam-follower connected to each said second arrn, a second cam-track cooperating with each
  • each of the arms is formed With a U-shaped jaw co-operating with a roller on each spool carrier.
  • each second ann is provided with a self-locking latch which engages the corresponding roller and is freed by movement of the arm shortly before it is due to disengage the roller.
  • the spider comprises a central rotary plate formed on one side-with slots for the first arms of each pair and on the other side with slots for the second arms of each pair, the Whole assembly turning between stationary side plates, one formed with a cam-track for controlling the iirst arms, and the other formed with a cam-track for controlling the second arms.
  • a machine in which the yarns are pulled out from the spools at a point other than that at which they are embodied in the fabric, the cam-tracks being shaped to give a sequence of steps which excludes that of pulling-out the yarns.
  • a machine in which the tufts are secured to an adhesive-coated backing and the camtracks are shaped to give a composite motion comprising the steps of laying the tufts 0n the backing and maintaining the lengths of yarn constant-while they are severed.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Woven Fabrics (AREA)
  • Sewing Machines And Sewing (AREA)
  • Treatment Of Fiber Materials (AREA)
US483635A 1954-01-27 1955-01-24 Manufacture of fabrics having a tufted surface Expired - Lifetime US2747647A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2542/54A GB751969A (en) 1954-01-27 1954-01-27 Improvements relating to the manufacture of fabrics having a tufted surface

Publications (1)

Publication Number Publication Date
US2747647A true US2747647A (en) 1956-05-29

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ID=9741419

Family Applications (1)

Application Number Title Priority Date Filing Date
US483635A Expired - Lifetime US2747647A (en) 1954-01-27 1955-01-24 Manufacture of fabrics having a tufted surface

Country Status (5)

Country Link
US (1) US2747647A (OSRAM)
BE (1) BE535132A (OSRAM)
DE (1) DE955223C (OSRAM)
FR (1) FR1121990A (OSRAM)
GB (1) GB751969A (OSRAM)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2831525A (en) * 1955-03-24 1958-04-22 Du Pont Tufter
EP1985732A1 (en) * 2007-04-23 2008-10-29 Brintons Limited Yarn tuft transfer system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126919A (en) * 1964-03-31 One-shot modified axminster weave and method of making same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2831525A (en) * 1955-03-24 1958-04-22 Du Pont Tufter
EP1985732A1 (en) * 2007-04-23 2008-10-29 Brintons Limited Yarn tuft transfer system
WO2008129304A1 (en) * 2007-04-23 2008-10-30 Brintons Limited Yarn tuft transfer system
US20100200103A1 (en) * 2007-04-23 2010-08-12 Michael Winspear Burton Yarn tuft transfer system
CN101711291B (zh) * 2007-04-23 2012-04-18 布莱敦斯有限公司 纱线绒头传送系统
US8186389B2 (en) * 2007-04-23 2012-05-29 Brintons Limited Yarn tuft transfer system

Also Published As

Publication number Publication date
BE535132A (OSRAM)
FR1121990A (fr) 1956-08-29
GB751969A (en) 1956-07-04
DE955223C (de) 1957-01-03

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