US1651809A - Axminster locm - Google Patents

Axminster locm Download PDF

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US1651809A
US1651809A US20534A US2053425A US1651809A US 1651809 A US1651809 A US 1651809A US 20534 A US20534 A US 20534A US 2053425 A US2053425 A US 2053425A US 1651809 A US1651809 A US 1651809A
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tube
yarn
tube frame
frame
loom
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US20534A
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Crossland George
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Mohawk Carpet Mills Inc
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Mohawk Carpet Mills Inc
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    • DTEXTILES; PAPER
    • D03WEAVING
    • D03DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D39/00Pile-fabric looms
    • D03D39/02Axminster looms, i.e. wherein pile tufts are inserted during weaving

Definitions

  • This Vinvention relates to a loom 'for Weavingn tufted fabrics, such as Axniinster rugs, and relates more pt icularly to an improved means for ,supplyi yarn to the tubes or presenters that introf'luce the tufts between the warp threads.
  • the piin'iary aim of ⁇ this invention is to provide'a pile fabiic'looin in which the tufting yarn is drawn from a source of supply mounted independently of the tube frames.
  • Anotherobject is to provide a loom apted to be used with the clamp tube frame described and claimed in my copending application, Serial No. 20,533, filed concurrently herewith, and to provide means on the loom to cooperatewith the releasable clamp' on said tube frame.
  • a still further object isv to provide iniy proved means for automatically tensioning the yarn.
  • Figure 3 is Vdiagrainniatic viewv or" a por tion of Figure l on the saine scaleas Figure 2, parts being broken away and partsl being,
  • both sets ofi'varp threads passing throughy lieddles (not shown), which arek adapted tol form a suitable shed upon manipulation of the shedding mechanism.
  • the usual needle mechaiiisiii (not shown)A is mounted on vone side of the loom, ⁇ and serves to insert the filling into the sheds asis customary in this type of.
  • the Woven fabric passes around spike roll 17 and over stripper roll 18, Vand thence d'ovvn to a suitable Wind-u'p ⁇ - mechanism (not-7 shown).
  • a suitable Wind-u'p ⁇ - mechanism (not-7 shown).
  • the lay 16 ⁇ ispivotally n'iounted on a shaft 19, andis actuated by connectors 2O throughsuitablemechanism (not shown), iiicluding cams on the main cam shaft 2l.
  • the tuftj'yarns'ror pile forming threads are inserted between the stuiferand binder Warp threads by means of tube yframes 2:2 of novelv construction, which are fully disclosed and.-
  • the tube framesQZare niountedfin the usual manner on continuousfor vendless cari mounted on shaft to prevent unintentional ii'ioveinentor slippingl 4of the chains23 due Vto the unbalanced Weight of thetube frames.
  • the endless chains 23 are also supported upon s'n'ockets 41, 42, 43 and 44 mounted upon a suitable super-.structure secured
  • the arrangement shown in Figure 1 is employed in order that twovof the passes or sections of the chain may be substantially vertical and "moving in the same direction. These sections are marked 46 and 47, and Atheir function will be stated below.
  • the shaft 25 may be rotated to feed the chains 23 by means of a tube frame chain feeding ⁇ mechanism of known type, such as vthat disclosed in the patent to Clark, No.
  • This mechanism comprises a pair of ratchet wheels (not shown) iixed to the shaft 25 and having ratchet teeth facing in opposed directions.
  • a pair of feed pawls (not shown) are regularly moved angularly about the axis of the shaft 25 by links 51 which connect the feed pawlsupports with a bell crank 53 actuated by a cam 5401.1 the loom cam shaft 21.
  • a guard plate or shield 55 is mounted on a kfixed pivot 56 and engages studs in the pawls, The guard plate is movable upward or downward, and in cach eXtreme 'posit-ion f it permits one of the pawls to become operative and holds the other inoperative.
  • the guard plate is shown in its downwardposition, in which position it per mits the chains 23 to be fed in the direction of the arrow A, Figure 1. f
  • the guard plate 55 is connected by a link to a reversing;v arm 58 pivoted to a bracket 59 secured to the superstructure 45.
  • a reversing Vchain 60 passes over sprockets 61 rotatably mounted on studs secured to a lower longitudinal member of the frame 45.
  • the chain 60 carries a plurality of cams whichV are adapted to engage a roller 64 mounted on the reversingr arm 53.
  • the arm 53 willthus be raised when the roller 64 is on top of one of the cams 63, and will therefore reverse the direction of feed of the chains. 23.
  • ri ⁇ he chain 66 is intermittently fed in the direction of the arrow B of Figure 1 by means of a ratchet 65 and pawl' 66.
  • the pawl 66 is moved by an arm 67 connected to the bell crank 53 by a link 68.
  • the construction is such that the chain 60 is moved one link on the forJ ward throw of the bell crank 53 and the chains 23 are moved one link on the rearward throw of the same.
  • These chains 66 and 23 are moved alternately in this manner in order that the reversing arm 58 and consequently the gnardplate 55 may be stationfifhe beams are marked I, H, 1H', and IV to correspond with the tube frames which they supply.
  • the yarns from the beams I and il pass around the rear side of the shaft 25 to their respective tube frames, and the yarns from beams HI and IV pass around the forward side of the shaft. All of the yarn is disposed between the sprockets the shaft 25 being ⁇ clear between these sprockets, thereby avoiding' interference withy the various moving parts o f the loom,
  • Each evener 70 comprises a pair of bars 71 arranged in the sameho'rizontal plane at opposite sides of the loom, the extremities of each bar 71 being.y secured to the vertical passes 46 and 47 of the chain 23 adjacent its side of the loom.
  • a member 72 is pivoted to each bar 71. and may have a straight portion 7 3 extending' forward yfrom the pivot and a. hooksshaped portion 74 'extending rearwardly therefrom.
  • a rod 75 connects the free ends of the hooks 74.
  • each member 7 2 is mounted in their' supports.
  • the yarn is arranged so as to pass over the rods 76 and "7 and below the rod 7 5.
  • the free end. of the arm 73 of each member 7 2 is connected to one end of the corresponding tube frame by means of a chain 7 8.
  • the lower end of this chain is preferably replaced by a softwire cable, asv this portion mustV at times bendv around and bear against the shaft 25.
  • thechaiii 78 will exert a pull on the member 72 which will raise the rod T5, thereby reylieving the tension on the yarn supplied to the tube frame and releasing sumcient slack to take care of the movement of the'tube frame.
  • the slack thus produced will be taken up by the low'-V
  • the movement of the n ering of the rod 75. member T2 in the return direction may be assured by using springs 79. or any other equivalent arrangement may be employed.
  • This tube frame vis provided With a releasable clamp adapted to grip the yarn and prevent it from being pulled out of the tubes, the clamp being re-V leased by a cooperating part on the loom at the proper time to permit relative movement of the yarn and the tube frame'.
  • tube frame is detachably mounted onV .
  • the tube frame as shown comprises a. bar
  • Dogs 9G are iXed to the rotatable shaft 86 and engage the arms 88.
  • Triggers 91 are alsosecured to the rotatable shaft 86, and are adapted to be engaged by mechanism on the loom to rotate the shaft A 88.
  • the dogs Upon such movement of the sli-aft. 88, the dogs will force tlie arms 8S outwardly against the action of ⁇ the vspi-.ings 89, thereby releasing the clamps 8T and periiiittiug relative movement of the tube frame and the yarn.
  • rIlie tube frame is shown in Figures l and 2 with the clamp closed, and in ⁇ Figure 8 with it open. l
  • mechanism is provided ou ⁇ the loom to engage the triggers-g9l and release the clamps 87 at suitable times.l
  • This mechanism comprises two bell cranks 92.. each pivoted to av bracket 93 secured to the' breast plate of the loom, one of t Kunststoffrackets y 93 being positioned near-each side of the loom below one end of the tube trame. Each ti l.)
  • bell cra-nk 92 carries a pin 94 at its upperV endwhicliy is adapted to engage a trigger 9L of t-he tube frame when the parts are 'in the position shown in Figure 3.
  • the other end of the bell crank is connectedby a link-'95 to a lever 96 pivoted to a bracket 97 securedl to the loom frame l0.
  • The'lever 96 carries a roller 98 which engages a cam 99'on the cam shaft 2l.
  • y f y Each ofv the tube frames is provided with a sheet metal guard 100, which is securedto the eind brackets 82 of the tube frame, and.
  • the clutch arms .28 remove the tube frame I from the ca rrying chains 23, irescnt it at the fell ofitheffabric for the tufting operation, and replace it on the chains during this halfrevolution of the cam' shaft.
  • the weaving and tufting operations are performed in usual manner, and will therefore not be scribed herein.
  • the clamps 87 on the tube frame hold the varn securely to the tube frame while the latter is being lowered and the tufts in sorted in the fabric. Vhen the tufts have been con'iaftertely formed and are-held firmly in place by the reed IG beating up against the filling, the bellfcranks 92 are actuated by their cams to force the pins Se against the triggers 91, thereby releasing the yarn clamps 8'?.
  • the tube frame is then raise'L through a slight distance by the clutch arms while the lower ends of the yarn are securely held in the fabric, thus causing relative y movement of the yarn and the tube frame.
  • the pins 94 next release the triggers 91, thereby reclamping'the yarn, and the shears 34 and 35 then come together and sever the yarn, leaving yarn ends projecting below the tubes which are long enough to form another row of tufts.
  • the clutch rarms'QS continue their upward movement and replace .the tube frame I on the chain.
  • the third halferevolution causesa repetition of the movements described underthe first -half-revolution, the tube frame II merely being substituted for the tube frame I, and the second cam 63 being ⁇ brought under the roller 454-.
  • the fourth half-revolution of the cam shaft brings the tube frame III yinto vertical position,y and the ⁇ fifth brings the third cam G3 under the roller.
  • the sixth brings tube frame IV into vertical position, and during the seventh tufts are formed from this tube frame.
  • the movement of the chain 60 which takes place during the seventh half-revolution does not bring an other cam under roller 64, but allows the latter to drop down upon the chain, thereby lowering the guard plate 55 yand reversing the direction of feed of the chains 28.
  • the cams 63 on the chain 60 in groups of three followed by three empty links.
  • the tube frames will be presented in the regular sequence 1 2- 3-4--3-2-l, etc.
  • the number of links in the chain 60 and the numlier and arrangement of the cams 68 must be altered to suit.
  • the chain 60 should have a number of links equal to some multiple of siX, since the chain 6() is moved six Alinks to complete an entire cycle.
  • the cams 68 may be constructed so as to overlap, in order that the roller 64 will not drop down in passing from one cam to its neighbor.
  • means'for inserting the ⁇ pile tufts, comprising in combination, a tube frame, means for supporting a supply of yarn Vindependently lai . to and operate-d by the tube frame for autoof said tube ⁇ frame, means for moving said tube frame toward and from the fell of the,
  • means for inserting the pi'le tufts comprising in combinatioina tube frame, means for supporting a supply of yarn independently of said tube frame, means for moving said tube frame toivard and from the fell of the Y fabric, lcontinuously acting means associated with andinounted on the frame for clamping the yain relative to saidframe, releasing means for rendering said clamping means ineffective during a part of the tuft inserting operation, and means on the loom frame for operating said releasing means.
  • a loom for 1Weaving tufted fabrics means for inserting the pile tufts, comprisingin combination, a tube frame,means 'for supporting a supply of yarn independentlyl -of said tube frame, means for moving said -tube frame toward and from the fell of the n fabric, yarn clamping means on said tube' frame, means for taking up the slack caused by movements of tlie'tube frame toward the source of supply, and ymeans fiXedly secured matically releasing said slack as the tube frame is moved from the source of supply.
  • means for inserting the pile tufts comprising inl combination, at-ube frame, means for supporting a supply of pile tuft yarn independently'of .said tubev frame,-nieans for moving said tube frame toWar-d and from the fell of the fabric, continuously acting lclamping means onsaid tube frame forpreventing movement of the yarn relative thereto, means for renderingsaid-yarn clamping means ineffective at.tiines, ⁇ and means .for maintaining a substantially even'tension on the yarn.
  • means for inserting the pile tufts' comprising in combination, a tube frame, means for supporting a -supply of yarn independently of said tube frame, means for moving said tube frame toward andy from the fell of tl'ie fabric, continuously acting clamping means on said tubefframe for preventing movement of the yarnl relative thereto, means for rendering said yarn clamping means ineffective at times, and means for maintaining a'substantially even tension on the yarn, said tensioning means being mounted independently of the tube frame and acting upon tli'e yarn between the sourcev of supplyand the tube frame.
  • means for inserting the pile tufts comprising in combination, a tube vframe, means for supporting a supply of yarn independently of said tube frame, means for moving said tube frame toward and from thev fell of the fabric, y'Continuously acting clampingA means e y on said tube frame for preventing movementV of the yarn relative thereto, means for i'endering sai-d yarn clamping means ineffective- Y at times, means fortensioning the yarn ⁇ and taking up slack therein, said means being mounted independently of the tube frame, and means iXedly secured to said'tube frame foroperating said tensioning Vmeans in accordance with' the movement of the tube frame relative to the source ofsupply.
  • a yarn tensioningL means acting upon the yarn between said supply and said tube frame, and comprising in combination, spaced horizontalfyarn supports extending transversely of the yarn, a transverse horizontal rod positioned between said supports and movable relative thereto, said rod being adapted to bear on the yarn, and means fi'Xedly secured ⁇ to the tube .frame 'for moving sai-d rod in accordance with the movement of the tube frame relative to the source of supply.
  • a yarn tensioning,- means acting ⁇ upon the yarn between said supply and said tube frame and'comprising,l in combination, a bar positioned near each side of the loom and extendingl longitudinally thereof, spaced horizontal yarn supporting rods mounted transversely between said bars, a member pivoted to each of said bars, a horizontal yarn tensioning rod carried between said members and positioned between said yarn supporting rods, said tensioning ⁇ rod being adapted to bear on the yarn, and means secured to said tube frame and connecting said pivoted members to the tube frame, whereby said tensioning ⁇ rod muy rbe moved in accordance with the movement of the tube frame relative to thesource of supply.
  • means for inserting ⁇ the pile tufts comprising in combination, a plurality of tube frames, means for supporting' a supply of yarn for each of said tube frames independently thereof, means for presenting the tube frames at the fell ⁇ of the fabric vin a predetermined cycle, continuously acting clamp-v ing' means on each of saidv tubev frames for preventing moveinei'it of the yarn relative thereto, releasing; means on each of said tube frames for rendering, ⁇ said yarn clan'iping ⁇ means ineffective during a portion of the movement ofthe tube frame, and means on the loom for ope l'atingsaid releasing means;
  • each tube frame having a pluralityV of tube frames and yarn supply for each of said tube frames mounted independently thereof, of a pair of chains for carrying said tube frames, one chain being positioned vnear each side of the loom and each having substantially vertical sections' adapted to move simultaneously in the same direction, and yarn tensioning ⁇ 'means for each tube frame, each comprising vtwo bars, one secured to the vertical sect-ions of each chain, a plurality of yarn supporting rods mounted between said bars, members pivoted to each of said bars, a yarn tensioning rod carried by said members and positioned between said yarn supporting rods, and means for connecting said members to the corresponding tube frame.
  • a loom for weaving tufted fabrics means for inserting the pile tufts, comprising in combination, tube frame carrying' Vchains, a tube chain feed shaft, sprockets on said shaft carrying said chains', means for angularly advancing said shaft intermittently in either direction, a plurality of tube frames detachably secured to said carrying chains, means for support-ing a supply of yarirfor each of said tube frames independently thereof, transferring means for sucmeans for inserting the pile tufts, compris ⁇ ing in combination, a plurality of tube frames, means for supporting a supply of warn for each of said tube frames independently thereof, means for presenting the tubo frames at the fell of the fabric in a predetermined cycle, continuously acting yarn clamping means on said tube frames for securing said yarn to said frames, releasingl means on each of said tube frames for rendering said clamping means ineffective, .slack tensioning means for the yarn supply of each tube frame acting on said Yarn when Ysaid tube frames are moved toward
  • means for inserting the pile tufts comprising in combination, a plurality of tubev frames, supporting means for said frames, means for removing the tube frames from said supporting means and presenting them singly and in a predetermined cycle to the fell of the fabric, a distant yarn supplying means for each tube frame, continuously acting clamping means on each of said tube frames, distantvslaclr tensioning means Vfor the yarn supply of each frame, means secured to each frame for rendering said tensioning means ineffective wi ⁇ le each fa-me is removed from said supporting inea-ns, and
  • ing mechanism comprising in combination, a feed shaft operativelyconnected tothe tube chain, means to angularly l, .dva'nce said shaft intermittently in either direction, a
  • a tube 'frame carrying chain operat-v pivotally mounted reversing arm adapted to Y' control the direct-ion of feed of saidshaft
  • a tube frame carrying chain operat ing mechanism comprising in combination, a feed shaft operatively connected to the tube chain, means to angularly advance said shaft .intermittently in either direction, a
  • a tube frame carrying chain operating mechanism comprising in combination, a feed shaft operatively connected to -tlie tube chain, inea-ns to angularly advance said shaft intermittently in either direction, a pivote-ily mounted reversing arm adapted to .

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Description

Dec. 6, 192 7.
G. CROSSLAND AXMINSTER LOOM Filed April 5. 1925 2 Sheets-Sheet 1 Dec. 6, 1927.
G. cRossLAND AXMINSTER LOOM Filed April s. 1925 2 sheets-sheet 2 CII Patented i6, llgV GEORGE ,GROSSLANIX OF AMSTERDAM, NEW' YORK ,ASSIG\TR TG CARPET MLLS, NG., Of? AMSTERDAM, NE'V 'YQRK, ,.HCORPRATION OF NEW YORK.
axiirriisrnn Lodi/i.; Y
Application ined aprii s, i925. sei-iai No. 20,534.
This Vinvention relates to a loom 'for Weavingn tufted fabrics, such as Axniinster rugs, and relates more pt icularly to an improved means for ,supplyi yarn to the tubes or presenters that introf'luce the tufts between the warp threads.
The piin'iary aim of` this invention is to provide'a pile fabiic'looin in which the tufting yarn is drawn from a source of supply mounted independently of the tube frames.
It is a further object of this invention to provide a loom of this character Which will eliminate streaks in the Woven fabric. 1
it is a still further object of this .invention to provide a loom wherein the number of tube frames used is very greatly reduced, and also to provide means for automatically reversing the tube frame carrying chain.
Anotherobject is to provide a loom apted to be used with the clamp tube frame described and claimed in my copending application, Serial No. 20,533, filed concurrently herewith, and to provide means on the loom to cooperatewith the releasable clamp' on said tube frame.'
A still further object isv to provide iniy proved means for automatically tensioning the yarn.
Further ob3ects and advantages of my invention will be apparent from the following' description, talren in conjiiiictionivith the acthis specification, andv in vehicln` Figure l is a d'iagranin'iatic side elevation of an Anninster loom embodying;b my 'inve partsbeing omitted for the salie of clai'i Figure 2 a front elevation on au enlarged scale of the rlovi'ernio;i,t tube'V frame of lia'iuel and its associated parts, the other coinpanying 'drfiWinOs which form a parrot tube frames being' omitted, and partsv being broken away; and
Figure 3 is Vdiagrainniatic viewv or" a por tion of Figure l on the saine scaleas Figure 2, parts being broken away and partsl being,
shown in di ll'erentv positions.
Referring; more particularly to the draW-' ings, in which likey reference characters denote like parts throughout the several v,views thereof, l represents the framerof aii Aie,
minster loom of standard type,-havi ng a binder Warp beam ll and a staffer 4'Warp beam l2. Thebinder Warp threads fronithe beaut-l ll pass over the Whip roll 13, and the stutter "arp threads pass over VWhip roll l,
both sets ofi'varp threads passing throughy lieddles (not shown), which arek adapted tol form a suitable shed upon manipulation of the shedding mechanism. The various Warp threads, together `with the selvagge threads4 (not shoiifn), passforivard through reed l5 eri 1f mounted on lay 16,'and are united at the.
fell of the fabric. The usual needle mechaiiisiii (not shown)A is mounted on vone side of the loom, `and serves to insert the filling into the sheds asis customary in this type of.
loom. The Woven fabric passes around spike roll 17 and over stripper roll 18, Vand thence d'ovvn to a suitable Wind-u'p`- mechanism (not-7 shown). y'The lay 16 `ispivotally n'iounted on a shaft 19, andis actuated by connectors 2O throughsuitablemechanism (not shown), iiicluding cams on the main cam shaft 2l.
The tuftj'yarns'ror pile forming threads are inserted between the stuiferand binder Warp threads by means of tube yframes 2:2 of novelv construction, which are fully disclosed and.-
cla'imed in my copending application, Serial No,`20,583, vfiled concurrently herewith, and i which are described in greater detail below.l
The tube framesQZare niountedfin the usual manner on continuousfor vendless cari mounted on shaft to prevent unintentional ii'ioveinentor slippingl 4of the chains23 due Vto the unbalanced Weight of thetube frames.`
1tion brake is'not. shown in the drawings asv its construction andV usev are Well `known iii thefart. i f y .n y rllie lowermost tube frame 22 may be, re
moved, fromthe carrying,` :chains '23 for the insertion of tufts in` the fabric, by clutches Q6 pivoted at 2,7' to transferfor. clutch arms 28.v The clutch arinsfQS arefmovable aboutl vert-ical studs 29 and a horizontalv dip shaft i i 30 in the usual manner, so that the tube frame may be released from the carryingv v l t These moire-f.A
chains, presented at the fell' of the' fabric, and returnedto the chains. ments are controlled by suitable mechanism operated by cams onthe cani shaftQl. 'lie Y tube frame is given a wiping movement in i the Warp, which aid/ s iiiaterially in insert-V ingthe tufts, by ineansofconnectors Blipiv- 'oted to the clutches Q6." Each connector l3l' is operated by a bell craiillever 32 Vwhich is to the loom frame 10.
in turn moved by a connector 33 operatively connected to a suitable cam on the cam Ythey are well known to persons skilled in the art and form no part of the present invention, further description is deemed unnecessary.
Those parts which are more intimately associated with the present invention will now be described.
The endless chains 23 are also supported upon s'n'ockets 41, 42, 43 and 44 mounted upon a suitable super-.structure secured The arrangement shown in Figure 1 is employed in order that twovof the passes or sections of the chain may be substantially vertical and "moving in the same direction. These sections are marked 46 and 47, and Atheir function will be stated below.
The shaft 25 may be rotated to feed the chains 23 by means of a tube frame chain feeding` mechanism of known type, such as vthat disclosed in the patent to Clark, No.
1,472,459, dated Oct. 36, 1923. This mechanism comprises a pair of ratchet wheels (not shown) iixed to the shaft 25 and having ratchet teeth facing in opposed directions. A pair of feed pawls (not shown) are regularly moved angularly about the axis of the shaft 25 by links 51 which connect the feed pawlsupports with a bell crank 53 actuated by a cam 5401.1 the loom cam shaft 21. A guard plate or shield 55 is mounted on a kfixed pivot 56 and engages studs in the pawls, The guard plate is movable upward or downward, and in cach eXtreme 'posit-ion f it permits one of the pawls to become operative and holds the other inoperative. In Figure' 1 the guard plate is shown in its downwardposition, in which position it per mits the chains 23 to be fed in the direction of the arrow A, Figure 1. f
` The guard plate 55 is connected by a link to a reversing;v arm 58 pivoted to a bracket 59 secured to the superstructure 45. A reversing Vchain 60 passes over sprockets 61 rotatably mounted on studs secured to a lower longitudinal member of the frame 45.
YThe chain 60 carries a plurality of cams whichV are adapted to engage a roller 64 mounted on the reversingr arm 53. The arm 53 willthus be raised when the roller 64 is on top of one of the cams 63, and will therefore reverse the direction of feed of the chains. 23.
ri`he chain 66 is intermittently fed in the direction of the arrow B of Figure 1 by means of a ratchet 65 and pawl' 66. The pawl 66 is moved by an arm 67 connected to the bell crank 53 by a link 68. It will be noted that the construction is such that the chain 60 is moved one link on the forJ ward throw of the bell crank 53 and the chains 23 are moved one link on the rearward throw of the same. These chains 66 and 23 are moved alternately in this manner in order that the reversing arm 58 and consequently the gnardplate 55 may be stationfifhe beams are marked I, H, 1H', and IV to correspond with the tube frames which they supply. The yarns from the beams I and il pass around the rear side of the shaft 25 to their respective tube frames, and the yarns from beams HI and IV pass around the forward side of the shaft. All of the yarn is disposed between the sprockets the shaft 25 being` clear between these sprockets, thereby avoiding' interference withy the various moving parts o f the loom,
as is clearly shownin Figure 2.
lt is evident that when a tube frame is removed from the chains 23 by the clutches 26 and presented at the fell of the fabric for the tufting' operation, considerable yarn must be drawn from the supply beam. Then when the tubeiframe is replaced on tue carrying chaiiis, the yarn would be left slack. To take up this slackness i employ novel yarn tensioners or eveners 70. one'acting on the yarn passing' from each supply beam to its tube frame. lheseieveners are denoted 17, I1. lll. and IV, to correspond with the lettering` of the beams and tube frames with which theycooperate.
Each evener 70 comprises a pair of bars 71 arranged in the sameho'rizontal plane at opposite sides of the loom, the extremities of each bar 71 being.y secured to the vertical passes 46 and 47 of the chain 23 adjacent its side of the loom. A member 72 is pivoted to each bar 71. and may have a straight portion 7 3 extending' forward yfrom the pivot and a. hooksshaped portion 74 'extending rearwardly therefrom. A rod 75 connects the free ends of the hooks 74. Two yarn'v leo i Lw
mounted in their' supports. The yarn is arranged so as to pass over the rods 76 and "7 and below the rod 7 5. The free end. of the arm 73 of each member 7 2 is connected to one end of the corresponding tube frame by means of a chain 7 8. The lower end of this chain is preferably replaced by a softwire cable, asv this portion mustV at times bendv around and bear against the shaft 25. y
' The member 7 2 of evener I is shown in full lines in the position which it assumes when the tube frame I is in place on the carrying chains 23, and in dotted lines in the position it occupies rwhen the tube frame I is presented at the fell of the fabric lby the clutch arms 26. `It is apparent that when the tube frame is lowered by the clutch arms,
thechaiii 78 will exert a pull on the member 72 which will raise the rod T5, thereby reylieving the tension on the yarn supplied to the tube frame and releasing sumcient slack to take care of the movement of the'tube frame. Similarly, when the tube frame is replaced on the carrying chains the slack thus produced will be taken up by the low'-V The movement of the n ering of the rod 75. member T2 in the return direction may be assured by using springs 79. or any other equivalent arrangement may be employed.
kBy securing the eveners to the vertical passes 46 and 47 of the chains 23, the even-k ers are lowered or raised horizontally when the chain is fed in either direction,v and consequently the relative positions ofeach evenei' and its corresponding tube frame remain .y
claimed in my copeiiding application re-k ferred to above. This tube frame vis provided With a releasable clamp adapted to grip the yarn and prevent it from being pulled out of the tubes, the clamp being re-V leased by a cooperating part on the loom at the proper time to permit relative movement of the yarn and the tube frame'. y
AThe details of the construction of the tube frame 22 are shown quite clearly in Figures f 2 and 3, and for a further'exposition reference, is made to my above'mentioned copending application. Y
8O having tubes 81,- end brackets V82, ears 83 andvspring hooks 84 vsecured thereto. tube frame is detachably mounted onV .the
f chains 23 by means ofthe ears 83 and spring ofsliaft 25.
The tube frame as shown comprises a. bar
The;
hooks l8st in the usual y manner. `The end brackets 82 carry between them a fixedshaft 85and a rotatable shaft 186. The bar-shaped yarn clamps 87 are secured to arms 88 rotat-` ably mounted on the fired shaft 85, and are heldagainst the bar 80 so. as to clamp the yarn by the p ressure ofthe coil springs 89, i
one end ofeach of which is securedto fixed shaft 85 While the other end bears upon one of the arms 88. Dogs 9G are iXed to the rotatable shaft 86 and engage the arms 88. Triggers 91 are alsosecured to the rotatable shaft 86, and are adapted to be engaged by mechanism on the loom to rotate the shaft A 88. Upon such movement of the sli-aft. 88, the dogs will force tlie arms 8S outwardly against the action of `the vspi-.ings 89, thereby releasing the clamps 8T and periiiittiug relative movement of the tube frame and the yarn. rIlie tube frame is shown in Figures l and 2 with the clamp closed, and in `Figure 8 with it open. l
`is above stated, mechanism is provided ou `the loom to engage the triggers-g9l and release the clamps 87 at suitable times.l This mechanism comprises two bell cranks 92.. each pivoted to av bracket 93 secured to the' breast plate of the loom, one of tliebrackets y 93 being positioned near-each side of the loom below one end of the tube trame. Each ti l.)
bell cra-nk 92carries a pin 94 at its upperV endwhicliy is adapted to engage a trigger 9L of t-he tube frame when the parts are 'in the position shown in Figure 3. The other end of the bell crank is connectedby a link-'95 to a lever 96 pivoted to a bracket 97 securedl to the loom frame l0. The'lever 96 carries a roller 98 which engages a cam 99'on the cam shaft 2l. y f y Each ofv the tube frames is provided with a sheet metal guard 100, which is securedto the eind brackets 82 of the tube frame, and.
as is clearly shown in Figure 3, prevents the' yarn from catching on the parts mounted on the shafts 85 andV 86. These 'guards kare pio ieu fidedat each end with 'a projecting tongue 101, to which the chains i8 kconnecting the tube trame with the corresponding evene-r 70 may be secured. These.to'itgu'esV lOl may be bent to the. right as shown in' Figure 3 forv tube frames I and II, and to the left foi-tube frames IIIand IV. The purpose of this is to hold the chains 7 8 as far as possible clear The operation ofvmy improved loom` will be described in so Vfar as it differs from that ofL an Airminster loom of the usual type. Starting fromy the position of the parts shown in Figure' l, tlie Afirst half :rotation ofthe-cam shaft '2l will move the'bellcraiik 53 from the extreme rearward position in which it is there shown to itslextreine forward position.V VDuringlthis movement, the f.-
-pawl 66L and ratchet 65 will fadvancethe cliainp'one link iii'thefdirection ofthe u i u i such a direction to slide over their respective ratchets without engaging the same. The chains 23 have consequently remained stationary.
TWhile the chains have thus been sta* tionary, the tube frame I has not. The clutch arms .28 remove the tube frame I from the ca rrying chains 23, irescnt it at the fell ofitheffabric for the tufting operation, and replace it on the chains during this halfrevolution of the cam' shaft. The weaving and tufting operations are performed in usual manner, and will therefore not be scribed herein.
The clamps 87 on the tube frame hold the varn securely to the tube frame while the latter is being lowered and the tufts in sorted in the fabric. Vhen the tufts have been con'iiiletely formed and are-held firmly in place by the reed IG beating up against the filling, the bellfcranks 92 are actuated by their cams to force the pins Se against the triggers 91, thereby releasing the yarn clamps 8'?. The tube frame is then raise'L through a slight distance by the clutch arms while the lower ends of the yarn are securely held in the fabric, thus causing relative y movement of the yarn and the tube frame.
The pins 94: next release the triggers 91, thereby reclamping'the yarn, and the shears 34 and 35 then come together and sever the yarn, leaving yarn ends projecting below the tubes which are long enough to form another row of tufts. The clutch rarms'QS continue their upward movement and replace .the tube frame I on the chain.
IVhen the tube frame is lowered, the chains 78 secured thereto will move the members 72 of the eveners TO in the manner above describefh'aml thereby release enough slack to enable `the tube frame to be readily lowered. .During this lowering operation yarn will be drawn from the supply beam to compensate for that cut off during theV previous tufting operation in which that tube frame took part, the clamps .S7 holding` the yarn for this il'uirpose. frame is replaced on chains 23.* the members 72 will be returned to their original position by the springs'), and the slackjtaken up.
The second half-revolution of the cam shaft will cause the bell crank 58 to move back again to the position shown in Figure l. During this movement the chains 23will be ladvanced one link in a. direction opposite to that ofthe arrow A. The tube frame IIv willV thus be brought into the voperative or rlhe guardplate 55 is raised by theV Then the tube' vertical position. At the Sametime the pawl 66 will travel backwards one tooth over the ratchet G5. The chain 60 thus rei'nains stationary during this operation.A
The third halferevolution causesa repetition of the movements described underthe first -half-revolution, the tube frame II merely being substituted for the tube frame I, and the second cam 63 being` brought under the roller 454-. The fourth half-revolution of the cam shaft brings the tube frame III yinto vertical position,y and the `fifth brings the third cam G3 under the roller. The sixth brings tube frame IV into vertical position, and during the seventh tufts are formed from this tube frame. The movement of the chain 60 which takes place during the seventh half-revolution does not bring an other cam under roller 64, but allows the latter to drop down upon the chain, thereby lowering the guard plate 55 yand reversing the direction of feed of the chains 28. The
eighth half-revolution therefore brings the tube frame III back into operative position.
By thusr arranging the cams 63 on the chain 60 in groups of three followed by three empty links. as shown, the tube frames will be presented in the regular sequence 1 2- 3-4--3-2-l, etc. Of course, if the number of tube frames to be used is changed, the number of links in the chain 60 and the numlier and arrangement of the cams 68 must be altered to suit. In the embodiment shown, the chain 60 should have a number of links equal to some multiple of siX, since the chain 6() is moved six Alinks to complete an entire cycle. The cams 68 may be constructed so as to overlap, in order that the roller 64 will not drop down in passing from one cam to its neighbor.
t will be obvious that my invention presents. many advantages over the usual type of Axminster loom. For example, the num-V -this means the production of streaks in the woven fabric may be avoided. Variationsl in the color of the ditferent'skeins of yarns sometimes occurLand if every tuft in each longitudinal rowA is inad-e from the same piece of yarinas would be the case Where only one tube frame is employed, a variation in the colorl of this piece of yarn will cause a streak in the -linished fabric. lVhere four tube. frames are used, only every fourth tuft will be made from the off-color skein, and` consequentlyl the slight variation in Vshade will pass entirely unnoticed. A more uniform 'blending of color is therefore achieved, andthe face ofthe carpet appears perfectly uniform and evenin color. f
lll)
vby Letters Patent is:
" might be drawn from an independent bobbin or spool. Y
Many other vchanges and alterations might beimade in the structure above disclosed Without affecting the spirit of my invention.,`
and therefore desireto be limited only by the prior art and the scope of Kthe appendedclaims'. y.
Having thus described, the invention, what is claimed as'new and desired tobe secured l. ln a loom'for Weaving tufted fabrics,` means'for inserting the` pile tufts, comprising in combination, a tube frame, means for supporting a supply of yarn Vindependently lai . to and operate-d by the tube frame for autoof said tube` frame, means for moving said tube frame toward and from the fell of the,
fabric, continuously acting means associated with and mounted Von the frame for clamping the yarn relative-to said frame,'and releasing-means for rendering said clamping means ineffective duringl a part of the tuft inserting operation. l l v 2'. In a loom for Weaving tufted fabrics, means for inserting the pi'le tufts, comprising in combinatioina tube frame, means for supporting a supply of yarn independently of said tube frame, means for moving said tube frame toivard and from the fell of the Y fabric, lcontinuously acting means associated with andinounted on the frame for clamping the yain relative to saidframe, releasing means for rendering said clamping means ineffective during a part of the tuft inserting operation, and means on the loom frame for operating said releasing means.
3. ln a loom for 1Weaving tufted fabrics, means for inserting the pile tufts, comprisingin combination, a tube frame,means 'for supporting a supply of yarn independentlyl -of said tube frame, means for moving said -tube frame toward and from the fell of the n fabric, yarn clamping means on said tube' frame, means for taking up the slack caused by movements of tlie'tube frame toward the source of supply, and ymeans fiXedly secured matically releasing said slack as the tube frame is moved from the source of supply.
afin a. loom for Weaving tuftedfabrics, means for inserting the lpile tufts, compristlie tube frame ing in combination, a tube frame, means for supportingI a supply of pile tuft yarn independently of said `tube frame, means for moving said tube frame toward andA from the fell of the fabric, yarn clamping means on'said tubefframe, means for tensioning the ya rn and taking up slack therein, lsai-dmeans beingy mounted..independently ofthe tube traino, and'meansv iXedly secured to said tube frame i'or voperatingsaid tensioning means in accordance With the movement of relative to they source of supply. i'
5. ,In a loom for Weaving tufted fabrics, means for inserting the pile tufts, comprising inl combination, at-ube frame, means for supporting a supply of pile tuft yarn independently'of .said tubev frame,-nieans for moving said tube frame toWar-d and from the fell of the fabric, continuously acting lclamping means onsaid tube frame forpreventing movement of the yarn relative thereto, means for renderingsaid-yarn clamping means ineffective at.tiines,`and means .for maintaining a substantially even'tension on the yarn. i V A i Gfln a loom for Weaving'tuftedfabrics, y
means for inserting the pile tufts', comprising in combination, a tube frame, means for supporting a -supply of yarn independently of said tube frame, means for moving said tube frame toward andy from the fell of tl'ie fabric, continuously acting clamping means on said tubefframe for preventing movement of the yarnl relative thereto, means for rendering said yarn clamping means ineffective at times, and means for maintaining a'substantially even tension on the yarn, said tensioning means being mounted independently of the tube frame and acting upon tli'e yarn between the sourcev of supplyand the tube frame. l, e
7 In a loonifor Weaving tufted fabrics, means for inserting the pile tufts, comprising in combination, a tube vframe, means for supporting a supply of yarn independently of said tube frame, means for moving said tube frame toward and from thev fell of the fabric, y'Continuously acting clampingA means e y on said tube frame for preventing movementV of the yarn relative thereto, means for i'endering sai-d yarn clamping means ineffective- Y at times, means fortensioning the yarn `and taking up slack therein, said means being mounted independently of the tube frame, and means iXedly secured to said'tube frame foroperating said tensioning Vmeans in accordance with' the movement of the tube frame relative to the source ofsupply.
8. ln combination With a loom for Weavy ing tufted fabrics having a tube frame and a supply of yarn for said tube frame' mounted independentlyV thereof, a yarn tensioning means vmounted independently, of said tube frame and-acting upon theyarn between said iai-i the yarn between` said supply and said tube frame,rand con'iprising in combination a transverse rod bearing on all the yarn euesl and means fixedly secured tov and operated by the tube `frame for moving said rod in accordance with movement of the tube frame relative tothe source of supply.
1Q. In a loom for Weaving tufted fabrics having a .tube frame and a supply of yarn for said tube frame mounted independentlythereof, a yarn tensioningL means acting upon the yarn between said supply and said tube frame, and comprising in combination, spaced horizontalfyarn supports extending transversely of the yarn, a transverse horizontal rod positioned between said supports and movable relative thereto, said rod being adapted to bear on the yarn, and means fi'Xedly secured `to the tube .frame 'for moving sai-d rod in accordance with the movement of the tube frame relative to the source of supply.
l1. In a loom for Weaving tufted fabrics having a tube frame and a supply of yai'ii for Asaidv tube frame mounted independently thereof, a yarn tensioning,- means acting` upon the yarn between said supply and said tube frame, and'comprising,l in combination, a bar positioned near each side of the loom and extendingl longitudinally thereof, spaced horizontal yarn supporting rods mounted transversely between said bars, a member pivoted to each of said bars, a horizontal yarn tensioning rod carried between said members and positioned between said yarn supporting rods, said tensioning` rod being adapted to bear on the yarn, and means secured to said tube frame and connecting said pivoted members to the tube frame, whereby said tensioning` rod muy rbe moved in accordance with the movement of the tube frame relative to thesource of supply.
1Q. In a loom for kWeaving tufted fabrics, means .for inserting the pile tufts, Vcomprising in combination, a` plurality of tube frames, meansfor supporting a ,supply of yarn for each of said'tube frames independ-k ently thereof, means for presenting the tube frames at the fell yof the fabric in a predetermined cycle, continuously acting clamping .means on each of said tube frames for vpretient-ing moyenient of vthe yarn relative si ses thereto, and means for rendering said yarn clamping means ineffective during a portion of the movement of the tubeV frames.
In a loom for Weaving tufted fabrics, means for inserting` the pile tufts, comprising in combination, a plurality of tube frames, means for supporting' a supply of yarn for each of said tube frames independently thereof, means for presenting the tube frames at the fell `of the fabric vin a predetermined cycle, continuously acting clamp-v ing' means on each of saidv tubev frames for preventing moveinei'it of the yarn relative thereto, releasing; means on each of said tube frames for rendering,` said yarn clan'iping` means ineffective during a portion of the movement ofthe tube frame, and means on the loom for ope l'atingsaid releasing means;
The combination with ak loom yfor Weaving tufted fabrics:having` `a plurality of tube frames and a yarn supply foreach of said tube frames mounted independently thereof, of ,a chain for carrying` 'said tube frames, and yarn tensioning` means secured to said chain. i
15.Tlie vcombination With a loom forV Weaving` tufted fabrics having a plurality of tube frames and a yarn supply for each of said tubey Vframes mounted independently thereof, o-f a cham for carryingV said tube frames having substantially vertical sections adaptedito move simultaneously in the same direction, and yarn tensioning` means secured to said vertical sections.
1G. The combination with a loom for Weaving 4tufted fabrics having ay plurality of tube frames and a yarn supply for each of said tube frames mounted independently thereof. of a chain for carrying said tube frames having substantially vertical sections adapted to move simultaneously inthe same direction, and a yarn tensioner for eacli tube frame acting on the yarn supplied thereto,
'each of said tensioners being secured to said.
vertical sections and being adapted rto take up the .slack caused by movementsV of tlie tube frame associated therewith relative to tlie source of supply. o
17. The combination with a loom foil We ving` tufted fabrics having .a yplurality of tube 'frames and a yarn supply for eaclii 1S. The CQllibination With a loom for loo weavingtufted fabrics. having a pluralityV of tube frames and yarn supply for each of said tube frames mounted independently thereof, of a pair of chains for carrying said tube frames, one chain being positioned vnear each side of the loom and each having substantially vertical sections' adapted to move simultaneously in the same direction, and yarn tensioning `'means for each tube frame, each comprising vtwo bars, one secured to the vertical sect-ions of each chain, a plurality of yarn supporting rods mounted between said bars, members pivoted to each of said bars, a yarn tensioning rod carried by said members and positioned between said yarn supporting rods, and means for connecting said members to the corresponding tube frame.
i9. ln a loom for weaving tufted fabrics. means for inserting the pile tufts, comprising in combination, tube frame carrying' Vchains, a tube chain feed shaft, sprockets on said shaft carrying said chains', means for angularly advancing said shaft intermittently in either direction, a plurality of tube frames detachably secured to said carrying chains, means for support-ing a supply of yarirfor each of said tube frames independently thereof, transferring means for sucmeans for inserting the pile tufts, compris` ing in combination, a plurality of tube frames, means for supporting a supply of warn for each of said tube frames independently thereof, means for presenting the tubo frames at the fell of the fabric in a predetermined cycle, continuously acting yarn clamping means on said tube frames for securing said yarn to said frames, releasingl means on each of said tube frames for rendering said clamping means ineffective, .slack tensioning means for the yarn supply of each tube frame acting on said Yarn when Ysaid tube frames are moved toward said source of supply and means on the loom frame for operating said clamp releasing means during apart of the time said tensioning means is inactive. i
2l. ln a` loom for weaving tufted fabrics,
means for inserting the pile tufts comprising in combination, a plurality of tubev frames, supporting means for said frames, means for removing the tube frames from said supporting means and presenting them singly and in a predetermined cycle to the fell of the fabric, a distant yarn supplying means for each tube frame, continuously acting clamping means on each of said tube frames, distantvslaclr tensioning means Vfor the yarn supply of each frame, means secured to each frame for rendering said tensioning means ineffective wi `le each fa-me is removed from said supporting inea-ns, and
means for rendering .saidclamping inea-.nsf
ineffective at the end of the oi'itwardv movementofa tube frame and duringa portion of the return movement toward its supporting means. Y
22. rEhe combination with a loom for weaving tufted fabrics having a plurality of tube framesiand ,a yarn supply for each of said .tube frames thereof, of a chain for carrying said tube frames having substantially vertical sections adapted to move simultaneously in the same direction, and yarn tensioning meansv for each tube frame, each comprising 'a bar se,- cured to said vertical sections, a bell crankl pivoted to said bai', a yarn tensioning rod secured to one arm of said bell crank and adapted to bearon the yarn, and a connection between the other arm of said bell crank and the corresponding tubeframe.
ing mechanism, comprising in combination, a feed shaft operativelyconnected tothe tube chain, means to angularly l, .dva'nce said shaft intermittently in either direction, a
mounted independently y 23; A tube 'frame carrying chain operat-v pivotally mounted reversing arm adapted to Y' control the direct-ion of feed of saidshaft,
and means for automatically operating said reversing arm in accordance with Va definite" plan, whereby the tube frames' may be pre-Y sented in a predetermined cycle, including a chain arranged adjacent said arm, and cams upon said chain adapted to raise and low-er said arm in accordance with a. preda.
termined cycle of operations.
24. A tube frame carrying chain operat ing mechanism, comprising in combination, a feed shaft operatively connected to the tube chain, means to angularly advance said shaft .intermittently in either direction, a
pivotally mounted reversing arm adaptedy to control the direction of feed of said shaft, and means for automatically operating said reversing arm in accordance with a definite plan, whereby the tube frames may be presented in a predetermined cycle, including a chain arranged adjacent said arm, a plural.-
ity of cams upon said chain adapted to oper# ate said arm in accordance with a predef termined cycle of operations, andi'neans forV advancing said chain alternately 'with thc'- inovement of said tube chain feed shaft.,l
25. A tube frame carrying chain operating mechanism, comprising in combination, a feed shaft operatively connected to -tlie tube chain, inea-ns to angularly advance said shaft intermittently in either direction, a pivote-ily mounted reversing arm adapted to .Control the direction ef feed' Qt Seid shaft icc and means for automatically operating Said reversing arm in' accordance with a delinite plan,V whereby the tube frames may be presented in predetermined cycle, including a chain arranged adjacent said arm a plurality of cams arranged upon said chain in a predetermined sequence and adapted to operate said'arm, means for advancing said chain including a bell crank, said bell crank being also connected to che feed shaft advancin'g mechanism and being adapted to operate the feed shaft on one throw and the reversing arm operating chain on the other, and means for actuating said bell crank.
In testimony whereof' I liereuno a'ix my signature.
Geenen eRoeemmen.Y
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2954805A (en) * 1955-11-30 1960-10-04 Erich Mittelsten Scheid Carpet looms

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2954805A (en) * 1955-11-30 1960-10-04 Erich Mittelsten Scheid Carpet looms

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