Патент USA US2411883код для вставки
Dec. 3, 1946. w..R. KILE ‘2,411,883 SKIP STITCH TUFTING- MACHINE Filed Aug. 26, 1940 5 Sheets-Sheet 1 'Wa/y man R. Kile 32% . Dec. 3, 1946. ‘ - I w. R. KILE ’ 2,411,883 SKIP STITCH TUFTING MACHINE . - Filed ,Aug. 26, 1940 5 Sheets-Sheet 2. 58 766 a ' 4 ' 3mm I ‘65 a?WdyinpnRKtle . Dec. 3, 1946. ’ w. R. KlLE ’ 2,411,883 ‘ SKIP STITCH TUFTING MACHINE Filed Aug. 26, 1940 5 / ///// //)| +5 44' ' a4 64 3 ‘Sheets-Sheet 5' 4 ,/ / ' l’ A 4 7" Patented Dec. 3, 71946 rinses I 1 UNITED STATES. ‘PATENT ‘ ~ OFFICE 25/111,883‘ '7 ’ p v - ' g ' SKIP s'rrrcn TUFTING MACHINE Waymon R. Kile, Cartersville, Ga._ ’ I I Application August 26; 1940, Serial N6.'354,295 c‘claims. (01.112429) 2 This invention relates to tufting machines. Figure 8 is an enlarged fragmentary sectiona VAn object of this invention is to provide an improved looper and cutting mechanism for loop ing and cutting the threads. , view taken on the line 8—-8 of Figure l. ' , Figure Qis a longitudinal section showing" a ' ' ' piece of fabric for tufts formed therein. accord Another object of this invention is to providein combination with a looper and cutting mecha nism, means whereby the material may be ad:v vanced relative ,to the table so as to provide spaced groups vof. tufts. ing to this invention. ' ~ ' ' ‘ . . ‘Y - .'invention whichincludes va base or table struc ture ll, an upstanding support orstandard. .12, any arm~|3 and a head ill. The support i2. is an improved material feeding means which is simple in construction and which is vadapted to intermittently move the material for the space of several stitches or tufts so as to form evenly 3 » . Referring to the drawings, the numeral Iii des ignates generally. a sewing machine structure constructed according to an embodiment-of this )A further object ofthis inventionis to provide’ spaced groups of tufts' ‘ preferablyiof hollow construction-and the arm I3 is also hollow. and. extends above the‘ base or i ' 15 A still ‘further 'objeotwof; this invention is .to table II andlthe he,ad._~l4 isialsorvofhollow con struction and includes-‘the conventional 'means by . means of which the‘ needle chuck l5 may be-vere provide any improved looper ‘and cutter together 'tically reciprocated relative to the table. i.i.- I ' with an improved operating means therefor so ‘A drive shaft i6 is journalled through the arm that the looper maybemoved to a loop receiv—. I3 being disposed in substantially parallel rela ing position and subsequently‘ shiftedto a loop 20 tion to the table ll and is provided atitsirear cutting positionat which time :the cutting means I end with ‘a grooved pulleyil'l and -a ‘fly ‘wheel is rendered active to cut one‘ orgmore-of the ‘ 18., The pulley ll’, is adaptedto beengaged by a loops on the looper. V, -/ . I . belt which isv connected ‘to ‘a, suitable driving ~ '. A further object'aof. this invention is to pro; mechanism'iwhichmay be either a manual 'mech- ~ vide an improved cutting- means for cutting the 25 anismv in the form 'of a treadle structure or’may loop mounted on the looper, the cutting means ‘ be connected to a power driven pulley.- A shaft including a pivoted support mounted on the i9 is disposed below the.- table It being, jour looper structure and means for-adjustably secur nalled in: a rear bearing 20 extending below ing the. cutter on the support.‘ the‘ table 1 Iv and also jjournalled in a forward To the foregoing objects and to ‘others which 30. depending bearing structure. 2_I. The shaft 19 at ' may hereinafter appear, the invention‘consists of . ’ itslrear end has secured thereto a sprocket 22 the novel construction, combination and arrange and a chain 23 is trained about the sprocket 22 and extends upwardly through the standard l2 ment of parts‘ as will ‘be hereinafter referred to and illustrated in theVaccompanying-draw and'engagesabout a driving sprocket 24 which is 35 ?xed tov the drive shaft £6.‘ The sprockets 22 ‘ ingawherein is shown anembodiment of the in vention, but it is to be understood “that changes, variations and modi?cations'may be resorted to which fall within the scopei'of the invention as claimed, In the drawings-1' I r .. ~ ‘and..24 are of the same size. . Thai-shaft‘ l9 adjacent'thersprocket 2_2:has se cured itheretoa spur gear 25 which isadapted to-kmesh witha secondJ-spur gear 26 which‘is a ' ; ?xed ‘toaa‘ shaft 21. The gears 25 and 26 have airatio of 1,.'..»to-,,4 respectively.-~,»The V _ shaft v ‘~21. is journalled in depending bearing :inernbers 28 and away ' Figure andI in is a‘ section detail of side-elevation‘ a skipstitchi'tuftingmapartly broken ’ chine constructed according to an embodiment of; . this invention. . 29'Ywhicli extend below thetabl'el L ~ Figure 2. is an enlarged sectional-lview'itaken on the line 2-2 of Figural. ' ' . i ' Figure 3ris afragmentary sectionalview taken on the line 3-3 of Figure 2; ' ' " V Figure 4 is a sectional ‘view taken;v onthe line 45 > . The shaft’ ~ 2'! is disposed laterally. of/the shaft] 9; ,"The shaft ‘21 also has‘secjure'd thereto ‘a cam member 311 adjacent» the gear 26 and'a's'. shown in Figure _8, ~ -. the cam member '38 comprises a plate v3| which'lis formed". with a' pluralityiof' cam~lobes 32 which ' are of‘ equal height’ and equal distance apart. 4—4 of Figure 3. w lI > Y ' -The‘plate 3| is also formed with a relatively long Figure 5 is asecti‘onal view taken-on theline _- I cam lobe._33, the purpose for which will ‘be here; 5-‘-5ofFigure4. V, j > Figure 6 is an enlarged fragmentary vsectional view taken onethe line 6-76 ofFigure-‘lv. ‘ inafterdesoribed~ V I ‘ ~. I A lrockhshaft 344 is rookabl-y mounted in bear ings 35 and 35 ‘and as shownin Figure 2, the rock a- " Figure '7 isa fragmentary sectional viei-v-ltalten 55 shaft .34 is disposed closely adjacent aside flange " r on the line ill-‘1 iof Figureg4,_ :: ;t.;.i l_ ,1 -' . 3.8 dependmszbelswithesiabiei 1;. .The. roskshaft ' 2,411,883 3 34 adjacent the rear end thereof has ?xed there to a rock lever 39 which is formed with a bushing or hub 40 engaging about the shaft 34. The lever 39 at its free end has mounted thereon a roller 4|, the roller 4| being mounted on a pin or shaft 42 which is ?xed to the lever 38. The lever 39 comprises a cam operated feeding lever and the shaft 34 is a material feeding shaft for feeding the material across‘the table II during the ver tical reciprocation of the needle 43 which is ?xed to the chuck |5. The shaft 34 adjacent the forward end thereof has secured thereto an arm or short lever44 as shown in Figure 7 is formed with a guide rib 10 at a point downwardly from the upper end there of. A loop forming member 1| is secured to the head 69 and comprises a body 12 having a slot 13 therein through which a fastening member 14 engages. The fastening member 14 also engages through the head 69 and by means of the slot 13, the body" may be adjusted relative to the head 69 and relative to the needle 43. The body 12 at its forward end has formed therewith a loop en gaging member or hook ‘E5 which is directed downwardly at its forward end as shown in Fig ure 4 so that when the hook or looper ‘I5 is moved forwardly as will be hereinafter described, the hook 15 will project through the strand of mate rial engaging through the needle 43 at the time . _arm 44. The reciprocating feed dog arm or lever the needle 43 is at its lowermost position. 45 has secured thereto at a point intermediate The hook or looper ‘i5 is of such a length that the ends thereof a substantially U-shaped feed two or more loops maybe retained thereon and dog 46 which is slidable in a slot 41 formed in the the‘ downward curvature of the hook or member table | I. The dog 46 is formed with a lateral ex '!5 is provided in order that the looped strand of tension 48 which is secured by fastening devices material will not slide off thereof when the hook 49 ‘to the lever or arm 45. The lever or arm 45 15 is moved to the left as shown in full lines in at its free end is formed with a slot 50 which Figure 4. opens through the free end of this lever or arm The arm 5| is rockedby means of the shaft I9 and a roller 5| loosely engages in the slot 58. 25 which at its forward end has secured thereto a The roller 5| is rotatably carried by an arm 52 collar 16. The collar 16 has secured thereto an which is ?xed to a rock shaft 53. eccentrically disposed pin 1‘! which engages The operation of the rock shaft 53 is conven through one end of a link 18. The link 18 at its tional and is of the type shown in conventonal opposite end is pivotally secured‘ as at 19 to the sewing machines particularly a “Singer” sewing upper end of the arm 6| so that for each rotation machine and the operation of this shaft 53 in of the shaft IS, the hook 15 will be pulled for conjunction with the remaining apparatus is be wardly to a loop receiving position and will also lieved well known. The dog 46 on its upper edge is formed with serrations 56 which are adapted - i be shifted rearwardly or to the left as shown in Figure 4 to a loop cutting position. to engage with the fabric or material moving Therarm 6| at its upper portion has pivotally transversely across the table I! so that when the secured thereto a substantially T-shaped cutter free end of the lever 45 is raised by means of the support generally designated as 89. This sup rock arm 52 and the lever 45 is also shifted trans shown in Figure 2 and one end of a feeding dog lever 45 is pivotally secured as at 46a to the rock versely of the table II by means of the rock arm '1 r port 80 has the head or ?anged portion 8| there 44, the material will be moved relative to the 40 of pivotally mounted as at 82 on the upper por tion of the arm 6| and the stem 83 of the sup needle 43. In practice the cam lobes 32 are port 80 has rotatably mounted on a pin 84 a adapted to actuate the rock shaft 34 so as to roller 85. The roller 85 rotatably engages a cutter move the material relative to the table I l for sub stantially one stitch and the long cam lobe 33 is ~11: operating cam 83 which is ?xed to the shaft 21 adapted to shift the lever 45 for a distance sub 45 at the forward end of this shaft. The cam 86 is formed with a- single cam lobe 8'! so that for stantially , equal to three stitches although the each rotation of the shaft 21, the cutter support spacing effected by the long cam lobe 33 may be ing member 80 will be rocked to a cutting po more or less than this number of stitches. The sition. The flanged portion 8| of the support 89 free end of the lever 45 is constantly urged down wardly by means of a contracting spring 55 which 50 has secured at the end thereof opposite from the pivot 82, a cutter member 88. The cutter mem at its lower end is connected to a hook 56 se ber 38 is formed with an upper cutting edge'89 cured to a U-shaped supporting member 51. The and the cutter member 88 is also formed with a opposite or upper end of the spring 55 is con downwardly opening slot 96 through which a nected to a link 58 which is pivotally secured as at 59 to the lever 45 inwardly from the slot 5|]. 55 fastening member 9| engages so that the cutter member 88 may'be'?x'ed to the support 89 in ver ' In order to provide a means whereby the strand of material may be formed into a loop below the table H and subsequently the loops may be cut, Ihave provided a combined loop forming struc ture and cutter generally designated as 60. The 60 loop forming structure includes an upwardly ex tending andlongitudinally arcuate arm 6| which‘ atv its lower end is formed with a bushing 62 mounted on a stationary shaft 63. The station ary shaft 63 extends between the two upwardly extending arms '84 and 65 of the U-shaped sup port 51 and the shaft 63 is disposed in parallel relation to the bight 66 of the U ‘support 51. The rear leg’ 65 of the U-member 51 is'substantially longer than the forward leg 64 and is secured by a fastening device 61 to the bearing structure 2|. Preferably the bearing structure 2| is formed with a recess 68 within which the rear leg 65 engages. The arm 6| of thelooper structure is formed at its upper end with a head 69 and the‘ head 69 as tically adjusted position. The cutting edge 83 is inclined upwardly toward the rear portion of the’ loop forming hook 15 so that when the cut ter 88 is raised to a cutting position, the rear or high portion of the'cutting edge 89 will initial ly cut‘the rearmost of the loops carried by the hook or looper 15. The pivotal member 82 comprises an elongated headed shaft which extends through the upper portion of the arm 6| and‘ upon which the cutter supporting member 80 is pivotally mounted. A bushing or sleeve 92 is disposed about the shaft 82 and bears against the outer side of the ?anged portion 8| of the supporting member 85. A tensioning spring 93 isdisposed about the shaft 82 and at one end bears against a collar 94 in , terposed between the sleeve or bushing 92 and the spring 93. The opposite ‘end of the spring 93 bears against a collar 95 which is secured in 2,411,883 ,6, adjustedposition relative‘ltoithe shaft'n by means by‘ith'e greater rocking effectedby means of-‘the of‘ a- setrserew 19s; The spring as‘ is‘ adapted i‘to tension the cutting bladeiall' against l-the adjacent cam'lob‘e 33L -‘ i1 - _ ’ I , “ It will be- understoodrthat there‘ may be more ' sideo‘f the hook member or looper 715, ‘which ad or less cam lobes 32san'd the cam-“lobe 33 may be any desired length depending upon the’ space ifcentside‘ is‘form'edwitha cutting edge 89a, Figured,‘ coa‘cting with the cutting ‘edge 89 of the cutter 88" soas'to'cut-the looped strands of material" engaged’ about'th'e, looper‘ hook “'15.: The ro1ler18'5iis yieldabl'y maintained against the cam desired between each ‘group-of‘ stitches I 02'.’ In ,I ~ order‘to change the space between ‘the groups'of ' stitches and change the number of stitches" in each group, it ‘i‘sronlyvnecessary- to change the 88v by meansv of a spring 9"!’ which at one end is 10. cam 38 and’ provide-acam with the desired 'num-, co‘nnec'tedfto the stem 83 and at the other-end , i’s‘connecte'd to‘ a depending hook 9'8 vwhich is ?xed'to‘thebearingmember'37. berof short cam-lobes-32 and thedesired length of th'eilon‘g'cam lobe 33. _ ‘ ‘ 'What I claim is: ' . ' ‘ w q-In' the use and operation of this machine, the 1'.’ A tufting machine comprising a reciprocabl'e drive:shaft/i6v is ‘operated ‘by any suitable driving 15 needle, a loop holding member, means support-~ in’ ns‘ and rotation er the shaft 16 will-effect lngqsalid member for swinging movement from v__ v, calreoiprocationfof‘theneedle‘chuck iii-and th‘e'needle‘ 43 "with a ‘ strand of tuft iii-‘ermine . , abuttingv position to a loop receiving position, a‘i-lo‘op cutting means carried by said member, terial threaded through-the eye of th‘e'nee'dl'e ' said cutting means comprising a pair ofiangularly 43. It will ,‘beunderstood that the machine it! 20V relatedparts, meansmpivotally mounting one end mayhave suitableguide means for the strand of “one ofsaid parts to said member, a cutting and also suitable'tensioning means therefor, such element ?xed to the other end of said one part, guide means and tensioning means being conven-v a rotary cam, and a roller carried by an end of the tional and well understood. other part engaging said cam to thereby rock said When the needle 43 is in its lowermost position cutting means relative to said member. through the feeding dog 46, the link ‘is will puil 2. A tufting machine comprising a reciprocable the combined looper and cutter 60 forwardly so needle, a loop holding member, means support that the looper hook 15 will engage between the ing said member for swinging movement from needle and one strand of the material threaded a cutting position to a loop receiving position, through the needle. The needle is adapted to 30 a loop cutting means carried? by said member, engage closely adjacent the rear face of the looper said cutting means comprising a pair of angularly hook75 so that when this member is drawn v related parts,ymeans pivotally mounting one end forwardly, it will be disposed above the eye of of one of said parts to said member, a cutting the needle and between the adjacent side of the element ?xed to the other end of said one part, a needle 43 and one strand of the material threaded 35 rotary cam, a roller carried by an end of the other through the needle. When the needle 43 is raised vpart engaging said cam to thereby rock said the looper hook ‘i5 is moved to the left as viewed cutting means relative to said member, and a * in Figures 2 and 4 with the looped strand of ma means constantly holding said roller in contacting ' terial engaged about the hook ‘ ‘i5. relation with said cam. When the , . looper hook 75 is in its furthest position to the 40 I 3. In a tufting machine a material feeding left of the needle 43, the cam lobe 81 will engage , means comprising a reciprocal'feeding dog having the roller 85 so as to raise the cutter 88. When only one loop is positioned on the book a lateral extension at its bottom, an elongated supporting lever arranged below and ?xed inter 15, ‘this strand may be positioned forwardly of mediate its ends to the lateral extension of said the forward edge of the cutter 88 so that this 45 dog, a rock shaft disposed atrig'ht angles to said one strand will notbe cut when thecutter 88 is lever, an upstanding arm ?xed at its lower end' raised. However, with each forward movement to said shaft adjacent one end thereof, means of the looper hook 15 to a loop receiving position, pivotally securing an end of said lever to the upper the succeeding loop is pushed rearwardly so that _,50 end of said arm, a depending spring controlled the succeeding'loop or loops will be cut by the arm ?xed at its upper end to said shaft adjacent cutter 88 when this cutter is raised by means of the opposite end of the latter, a rotatable cam the cam member 86. ' The feeding dog 43 is reciprocated back and below said shaft for shifting said spring controlled arm, and a roller carried by said spring controlled forth in an even stroke by means of the feeding arm engaging said cam to thereby effect rocking lobes 32 which will evenly rock the cam engaging 55 of said shaft, said cam including a disc-shaped lever 39. The lever 39 is held with,the roller plate formed on its outer edge with a plurality of , in contacting relation with the cam 30 by means of a spring 98 Whichat one end is secured to the lever 39 and at the other end secured to a de evenly spaced apart cam lobes, at least one of said cam lobes being of greaterheight than the re maining cam lobes to thereby eifect greater rock- v pending supporting member I 80 which is ?xed 60 ing of said shaft. to the underside of the table II. When the large. 4. A tufting machine comprising a reciprocable, lobe 33 engages the roller 4| , the lever 38 is given a greater movement so as to effect a greater move needle, a loop holding member below said needle, means supporting said member for‘ swinging ment of the dog carrying lever 45. This will ‘cause movement from a cutting position to a loop re the dog 46 to move a greater distance than the 65 ceiving position, a loop cutting means carried by distance e?ected by the even lobes 32. The ef said member, said cutting means comprising an ' I fect of this greater movement of the feeding dog elongated substantially horizontal bar,‘ means '48 will be to move the fabric or base Iill 'for~ pivotally mounting one end of said bar on said ' wardly a distance substantially equal to three supporting means, a cutting element carried by stitches. When the lever 39 is rocked» by means 70 said bar adjacent the opposite end thereof, a of the lobe 32, the fabric l?l will be moved for— depending bar carried by said ?rst bar, a roller wardly only one space or one stitch as shownv by > 7 carried by said depending bar, and a rotary cam the stitches J02, In the present instance ‘there are three stitches I02 in each group and the space I03 between each group of; stitches Inglis? formed engaging said roller to thereby rock said cutting , means relative to said member. ~ 75 , 5. A tufting machine comprisinga reciprocable .1 QAILQQS 8 ‘m1 vin to said head and engaging at one of its needle, a loop holding member below said needle, _‘ , ,len thwise edges against said rib, -a downturned means supporting said member for swinging loop forming hook carried by said plate at one movement from a cutting position to a loop re end thereof, said plate having an elongated open oeiving position, a loop cutting means carried by ing therein, a fastening device engaging through said member, said cutting means comprising an $1 said opening for securing said plate in longitudi elongated substantially horizontal bar, means nally adjusted position relative to said rib, a pivotally mounting‘one end of said bar on said supporting means, a cutting'element carried by said bar adjacent the opposite end thereof, a de pending bar carried by said ?rst bar, a'roller carried by said depending bar, a rotary cam engaging said roller to thereby rock said cutting means relative to said member, and means hold ing said roller in contacting relation with said cam. 6. In a tufting machine an oscillatable loop former including a rock arm, means for rocking said arm, a head carried by said arm, an elongated rib carried by one side of said head and disposed in proximity to the top of the latter, a rectangular plate disposed in face abutting re spring controlled T-shaped cutter support on the said side of saidhead below said plate and bodily shiftable with said rock arm, tensionable means engaging through - an end of the cross arm of said support for rockably mounting said support on said head, a roller carried by a free end of said T-shaped support, a loop cutter, means securing said cutter on the opposite end of the cross arm 15 of said support below said hook, and means engageable with said roller for rocking said support on said head to thereby shift said cutter to a cutting position relative to said hook. WAYMON R. KILE.