US2598578A

US2598578A - Severing machine for looms

Info

Publication number: US2598578A
Application number: US71898A
Authority: US
Inventors: Mccutchen Joseph Kelly; David A Tillman
Original assignee: Individual
Current assignee: Individual
Priority date: 1949-01-21
Filing date: 1949-01-21
Publication date: 1952-05-27
Anticipated expiration: 1969-05-27

Description

J; K. MCCUTCHEN EVAL SEVERING MACHINE FOR LOOMS May 27, 1952 Filed Jan. 21, 1949 6 Sheets-Sheet l H6 unl JK. MC CUTCHEN mw ADAVID A. TILLMAN ATTOR N EY May 27, 1952 J. K. Mccu-rcl-IEN r-:TAL 2,598,578

SEVERING MACHINE FOR LOOMS Filed Jan. 21, 1949 6 Sheets-Sheet 2 F|G.3. Fl G. 5. 2825 25 '-n 25 J. K. MGCUTCHEN AND D vlo ATILLMAN @w MMM ATTORNEY May 27,v 1952 J. K. MccUTcHEN ETAL 2,598,578

SEVERING MACHINE FOR LOOMS Filed Jan. 2l, 1949 6 Sheets-Shea?l 5 Fl G.

|07 IOS |08 l g5 IQS YS 6l H2 -`a7 67 v m fm1 Fm] L l J, K. McCUTcHEN AND DAvw A. TILLMAN w @WW ATTO R N EY May 27, 1952 J. K. MGCUTCHEN ETAL 2,598,578

sEvERING MACHINE FOR Looms Filed Jan. 21, 1949 6 Sheets-Sheet 4 T T l2 85 84 I2 9| 92 Ok 9B l/ l/ l u o 95 96 '52 '8W 77 75 3mm JKMCCUTCHEN AND DADW 32mg ATTO R N EY May 27, 1952 J. K. MccuTcHr-:N E-r AL 2,598,578

SEVERING MACHINE FOR LOOMS Filed Jan. 21, 1949 6 Sheets-Sheet 5 |06. |09 'OO lol 125 J. K. Mc CUTCHEN @5mn DAwo A. TILLMAN,

ATTORN EY May 27, 1952 J. K. Mccu'rcHEN ETAL 2,598,578

SEVERING MACHINE FOR LOOMS Filed Jan. 21, 1949 6 Sheets-Sheet 6 3mm/b- J. KMC CuTcH EN A/ vo DAV/0 A. TML/wm' ATTORN EY Patented May 27, 1952 HMTD-i sTATEs PAT sur SEVERING:lVIACHINEFOBQLOQMS Joseph. Kellyy M'cCiitchen andfDavid' A)` Tillinam Ellijay, Ga.

ApplicationzJannart'Zl, 1949.SerialLN'm 7138981.

21 Claims. l. Our invention relates to' means.. for severing oating strands attachedy to. or WovenrintoA afabric, for producing tufts upon theafabric.

An important object of` the invention is. to.

provide automatic means to sever all iioating. strandsina group, upon one cycle. ofoperation.

A further object off the .inventionis 15o-provide means of the above-mentioned character which is Aactuated by the jack lever of the dobby; ofthe loomaf ter aselected numberofpickshave been. K

made, to sever theiioating strands.

Ar further. object of thefinvention isfto .provide meansof the above-mentioned character which may be'throwninto .action :and will Lautomatical- 1y causeithe cutter to. traveliromone. edge of A,

the fabric .to the opposite; edge. and, back to the starting' poi-nt and then idle with respect. to

' travelling.

A further object of the invention, is toprovide means to effect a reciprocatory-movernent ofthe ,u

carriage vand to .utilize such .reciprocatory move.- ment for driving a rotary cutter.

A further: object .of` theinventionis to provide a. presser, foot for. usein conjunction. with. the.

cutter.. to.. properly guide.. the floating yarninto proximity. tov the. cutter to besevered;

Atfurther object of` the invention is to provide. mechanism of'the. above mentioned character which isv wholly. automatic. and will not'. disturb the normal' wearing operation' ofthezloom;

Other objectsand advantages oftheinvention lowing description:

I`nthe` accompanying drawings; forming` a-4 part' of thisl application, andi in'whicn likev nu- Figure 3i isaaplanviewof the oarriage=andf track; parts `.omitted anduparts1broken'. away,

Ei'gure4 is aside elevationoffthe: carriage.,V the trackzbeing. omitted;

Eigurei4 iscan endielevation.. of the carriage. thel track. being shown. in section,-

Eigure 6v 2 is laxtransverse Y vertical section, taken on linea iL-6') of Figure: 4;

Figure. 7; is; a.:. central vertcahl section; through f ther coupling. element.: securing .the chain to; the.

carriage;

Eigure--S'is an. endelevationof the machina.

looking 'to `the. lef t, in. Eigure. 1,

Eig-tirer 9,.. is a transverse .vertical` sectiontaken. onrline 9.-9 of Figure 1, looking in, the direction` of the arrows,

Figure 10 is.a,pl'anview. of'A the gear. boxandassociated elements,A

Figure 11 israsimilaryiew, the-topof the gear box being.A removed., and? parts; omitted;

Figure. 12.. is.a.vertica1.section\ taken.. on. line? I 2--I 2 0f Figure-110.

Figure 13.15 av vertical section taken. on. line.`

Figure 1.4ik is a vertical section. taken on. lineA |4--l 4 of.l Figure 10,r

Figure' l5 `is, a .diagrammaticA plan view., of.` the. sand rollerA of the. loom, showing. the.. cutting.,

mechanism associated with the sand.A rollen,

Figure 16-is a, diagrammatic verticallslection throughthe sand'roller and iab'ric,sho.wii1g the position of the carriage,

Figure. 1'7 is.. an. enlarged fragmentary, plan..

view of. the. fabric showing; the. tuft producing yarns Woven,therein,

Figure 1.8 is a. longitudinal; section. through.

thefabric showing. the tuft, pituducl'ig. yarn. in elevation,

Figure. 19 is. a. section. through. the. fabric showing.. the completed. tuftA Figure 20, is..4 an enlarged'. longitudinal. section. through thepresser. foot.

In the drawings, wherein. for.. the,purpose ofi illustration is.. shown, a preferred. embodiment. of. our. invention, the. numeral 2.0" designates:

track rails. extending, transversely of the. fabric. 2| and loom andi arranged'. near and.. spaced from thesand ro11er..22 of Ithe .loom. These track railsmay be in theform of.'inver.tedfL.-irons and are rigidlyv connected.. and rigidly supported. by. any` suitable. means, such as. stationary. supports 20'..

Mounted to travel. upon. the. track` rai-ls Ziifis. .a. reciprocatory-I carriage, embodying a. vertical plateaZ.; havingY upper. horizontal axlesld. rigidly secured thereto, .adjacent .to its .topand opposite.

ends. The. axles. 2.4 carry. wheels` zrotatahle. thereon, and. these wheels..trave1upon,the track railsLZS., as shown. The lower transverse axles 26 .are rigidly secured to .the.verticalplate123Land have wheelsuzlfrotatable thereon.. The wheels 2.1,.

arein vertical alignment. with the whee1s-i25liandj are arranged vbeneaththe horizontal. webs ofthe.. track rails` Zilfandt are spaced therefrom; The. function of thewheels 2,1 is to` prevent.undue.=ver. ticalmovementof .thefcarriagewith respect to the track:- rails` 2B, Ahorizontal Lguidefrail.' 28fispro'.-

vided, to engage the ends of two of the wheels 25, and this guide rail is mounted upon the top of one track rail 29, and is adjustably secured to brackets l29 by bolts 30. The brackets 29 are secured to the track rail 29, as shown. Arranged near the right end of the track, Figure l, which is the starting or idling position of the carriage, is a leaf spring 37|, mounted upon and attached to one track rail 28 and adapted to receive a wheel 25 between it and the track rail, when the carriage is shifted to the starting or idling position, thereby securely detachably holding the carriage in the starting or idling position. Since the tops of the rails 20 are horizontal and flat, and the wheels 25 are free from flanges, Figures 1, 3, 5 and 6, the carriage 23 is capable of limited lateral shifting movement in a direction longitudinally of the feed of the fabric being woven. The slack inthe endless chain 66 will permit of the limited lateral shifting movement of the carrlage 23', which is also contemplated by the adjustment of the guide rail 28. The shoe 49 passes beneath the floating portions l3| to lead the floating portions to the rotary cutter 44, Figure 20, and since the oating portions are arranged in a line, they cause the presser foot 49 to follow such line, thereby shifting the carriage 23 laterally in a forward direction longitudinally of the line of feed of the fabric as it is being woven.

The vertical plate 23 of the carriage depends below the

axles

24 and 28 and is provided with a depending vertical bracket 32,v rigidly secured thereto. Opposite the bracket 32, the plate 23 has a large opening 33, receiving a tubular hub 34, for-med integral with a large gear 35. Arranged within the bracket -32 is a sprocket wheel 3B, having a tubular hub 31. The tubular hub 31 telescopes with the tubular hub 34 and is rigidly secured thereto by means of a press flt or the like. Ball bearings 38 are arranged within these telescoping tubular hubs and are mounted upon a horizontal shaft 39, rigidly secured to the vertical bracket 32. A lower horizontal shaft 49 is rigidly secured to the lower end of the vertical plate 23, and carries ball bearings 4|, the upper races of which have a press fit within a sleeve 42, which is accordingly rotatable upon the shaft 49. This sleeve is provided at its end adjacent to the vertical plate 23 with a radial flange 43, to engage with a cylindrical rotary cutter 44, having a central opening to receive the sleeve. A pin or pins 45 may attach the rotary cutter to the flange 43. A clamp ring 418 has screw threaded engagement upon the sleeve 42 and is adapted to be screwed up into clamping engagement with the rotary cutter 44. A small gear 41 engages the large gear andhas an extension 48 integral with the sleeve 42. The gear 41 is rotatable upon the shaft 49, and is rigidly secured to the sleeve 42 by means of a press t, but this connection may be effected by othel` means.

Arranged beneath the cutting edge of the circular cutter 44 is a horizontal presser foot 49, provided upon its upper surface with a vrib 59 having a groove 5| to receive the edge of the cutter which of course does not contact with the rib. This rib has a longitudinally inclined upper face which rises toward its railing end. The rib has its trailing end in vertical alignment with the axis of rotation of the cutter 44 and projects for wardly beyond such axis, as shown. The rear end of the presser foot 49 is preferably bent upwardly slightly, as shown at 52. The leading and trailing edges of the rotary cutter are covered by guards I53 and 54, rigidly secured to the vertical 4 plate 23, and depending therefrom. The presser foot 49 is carried by a vertical bar 55, offset laterally at its upper portion, and rigidly secured to a depending portion 56 of the plate 23 by bolts 51. The numeral 58 designates a gear casing, which is rigidly connected with the track rails and rigidly supported with respect to the track rails and has a bearing 59 receiving a transverse shaft 50. The opposite end of this transverse shaft is held within a bearing 8|, carried by a bracket 62, rigidly mounted upon the gear casing. ,Stop rings 63 and 64 are rigidly mounted upon the shaft G0, Figures 10 and 13. A sprocket wheel `|35 is clamped to the shaft 59 for rotation therewith and this sprocket wheel receives thereon a sprocket chain 66, extending to the left, Figure l, and passed about a sprocket wheel 51, xed upon a rotatable shaft 68, mounted within suitable bearings 69 carried by the track rails 29.

The sprocket chain -66 has its upper run attachedv to the vertical plate 23, near its top, by means of a horizontal tubular coupling 19, Figures 3 to 5 and '1, rigidly secured to the vertical plate '23, and receiving the upper run therethrough. Formed integral with the horizontal tubular coupling 10 is a vertical tube 1|, receiving a plug or pin 12, to engage with a selected link and secure such link to the coupling 10. This pin is moved downwardly by a spring 13 engaged by a screw threaded plug 14, having screw threaded engagement with the vertical tube 1|. It is thus seen that when the sprocket chain '86 is moved in opposite directions, the carriage will be reciprocated. The lower run of the sprocket chain 66 engages with the sprocket wheel 36, and when the lower run is travelling in one direction, the carriage is travelling in the opposite direction, and the sprocket chain will therefore rotate the sprocket wheel 38 which will rotate the cutter 44 at a high speed through the medium of the

gearing including gears

35 and 41.

Means is provided to rotate the shaft 6D in opposite directions, including gears mounted within the casing 58. This casing has a top or cover 15. The gearing includes a gear 16, arranged Within the gear casing 58 and rigidly mounted upon the end of the transverse shaft 60. The gear 16 is adapted to be alternately engaged by axially shiftable gears 11 and 18, and also to be free from engagement with both gears at the same time. The gears 11 and 18 are rigidly mounted upon a longitudinally movable shaft 19, Figure l1, mounted within bearings and 8|. The shaft 19 has a head 82 rigidly mounted thereon, provided with an annular groove receiving a shifting stud 83, rigidly secured to a reciprocatory bar 84. The bar 84 is guided within

openings

85 and 86, and the bar 84 extends exteriorly of the gear casing and has a depending extension 81. This extension has a screw threaded opening 88 to receive a bolt 89, locked in adjustment by nuts 90. This bolt has a screw threaded connection with a slide 9|, operating within a guide 92. The slide 9| has a cam point 93 and the shaft 19 has a cam point 94, these cam points being oppositely arranged. A transverse shaft 95 is provided and is arranged at a right angle to the shaft 19, and is held within bearings 96, Figure 11. This transverse shaft extends to the exterior of the gear vcasing and has a vertically swinging lever 91 rigidly secured thereto. Mounted within the Vgear `casing is a caml 98, rigidly mounted upon the transverse shaft 95. This cam vhas a lowI part 99, intermedi# ate parts |08, and high part IUI, Figure 12. The

agace-farei;

cam points; 9.3i and: 04. are. arranged: to engage theseacam parts; as shown'.v

Thelever: 91, Figuresilo, 12 and: 1.operates within.l aastationary guide includinggspa'ced; sides |02.. Cinezsideahaea transverseopeningffor refl ceivingzfa. bolt |03F,.having a beveled face: |04. Thisbol-t; is carried by a .shank 105,; whichv en-f gagessarm |06. Thebolt is projectedtc` the lock,- ingpositionbya spring |01. In Figure: 10the.: bolt-.isprojectedto a locking position toflock the lever 91 against movement. The shank.v |05 eX- tends through an opening formedinvone arm cfa. bell crank lever |087y and carries astoplcollar |05.Y This .bell crankflever. is mounted uponamxed -pivotvr H10. carried.: by the cover 15.l When .thecleverY |l8-f has.. its transverse.V arm swung to. the left, ,as indicated .by-thev arrow inFigure 10, the-.bolt |03; will beretracted andthe lever S11-released.

Arranged nearl and above one-traenl railll-is-v a .horizontal .reciprocatoryshifting-bar l, operating-.Withinstationary.v guides H2. At its rightv end, Figure 1-, the bar hasanvupstanding-'profjection ||`3,.Figure 8, arranged tofcontactiwith the; transverse arm of the bell crank lever |08 andfsvving'itI to. the left, as indicatedby the a rrow. when the bary I Ivl is moved totheleft. Rig idly mounted upon the bar I is a trip orexten.- sion H4, havinga depending end H5, Figure 9. arranged in the-path of travel ofthe-frightl axle 24. The bar I'A has a. second trip. element |||5v rigidly;v secured. thereto, having2 a depending end: ||1 arrangedinf'thepath of travelof the other axle" 24,- like -1 endV H5. A trip H8! isrigidly mounted upon'the bar I||, and arranged tovengageftheflever; 91 to moveit to the neutral orintermediateposition.

A retractile coil spring I |8Hhas one end attached to a stationary boltA |9-on one rail track 20 Aand its oppositeend. secured to the bar as shown at- |20. A retractilecoil spring, |2| hasone-end securedto.the-barl bya bolt|22 Whileits opposite end; is secured to thelever 91, as shown at l 23.-. Figure 12.

AfwirelM orother flexible element-.isattached to the' leverl 91 at |25: and this Wire extends throughxa guide tube |26' and thewire extends to the--dobby vhead ofthe loom and is-connectedl with the.iack;..1ever |26l thereof. The Shanna-con. tinuouslyy rotated-by. a sprocket wheel 19, driven from-any-suitable.source.

The :operation of the machine is as' follows:

AsJ more clearly: shown-in'Figures 1; ljand '16,; the: track rails 20 are positioned near and abovev the sand roller 22 of the loom, but thefcarriage plate;-2 3 and presserfoot'il are spacedfrom the 5 peripheryr'o'thegsand roller and the presser'foot doesfnotecontact 'with the sand roller.l This enablesftheffabric to flexas the presser foot isy travellingv over the upper'surfaceof the fabric.

As the fabric-fiswoven upon the loom,y it; is4 passedkover the sand-.roller 22-and is Woundupon thetakefupvroll beneath the sand roller. This:A is the conventional procedure.l During the wea-v.- ingl of y.thefabric; lthe. tuft producing strands |29 extend longitudinally ofthe fabric and .areewovenintoy the; fabric. This weaving action is well knownl in theart'and is' shown-generally in' Patent' No. 2;()87H10gand' other patents. Byvirtue-ofxthe weaving,l action the` longitudinal strands` |29.- passl transversely; through the completedy fabric,y providing short portions |30,' and long floatingv portions |3-| arranged abovethefabric, during'ther weaving fp rocess.- The-short portions I 30;! constituta-the. means-1 which secure; the; comnliedctugftsaA toptheffabriceand thesef.-short` portionsV |39; are

6 arranged. in.; spaced; longitudinal; groulrsiv and; spe.cecbtransversegroups.` The short'portions' i303 arefwoven finto theffabricxaholding the.' endss, The.` longff.floating-,portions' lf3/l. are. severedattthein longitudinal centers.. Whilev the.l fab-ric movingf; toward: the breast beam., thus.. producing; shaped tufts, Eigure 19: Sincethe :guiderail 2.81. is1longitudinallysinclined.iwi-th respect:to',theilonf. gitudnal: axis` of the sand roller. andrtransversez axiseoithe fabric; the .Wheels v25' by :bearing agasinthe.; inclined. guideyrailZB-.cause the. carriage tol. move slightly4 longitudinally, of the. fa'lntic;while.v the carriage isv being shiftedl transverselyf ofthe'; fabric.' and. this causes the rotary. cutter: 4A; to.v keepup. withnthe 1 feed of the fabric: and-sever the long:y floating portions |.3glf at theirf longitudinal.. centers.: The upper run Yof the chaink 06; tends-.110.: pull '.L the marriage: in Y a a straight line andi. retainsthe v wheelsvv 25Y in. contact with'.l thel guide raililr, *A butztheref. is' suicient r slack-f` in the upper: rurrto. permit-.of thezslight lateralV shifting of the; cars--y riage.v These. Wshan'edtufts;l are securely an:- chored to f the fabric. When: the fabric 1 is lauri-` derede. or: otherwise: treated,k thesef tufts becomel fluffy; The tuft producing.- yarn 12a is. muchl heavierr` than the warp'. of`l| the fabricandiisaof-raf. much looser twist; so;v that it. will; readilytuff. The: presser'foot' 49 passes beneath. the?v floating: portions..v |31 and thesefloatingr portions travell upon Ithe inclined rib andi are brought intol colo-V tact'witl'r the rotatinglcutter M projecting` into; the'.4 groovev 55| and; are .severed thereby. The'. severing/occurs before-the shank 155` reaches the floating? portions 5h Theweaving istfcontinuous and:` thedtransverse rows? ofiA shortf portions-a |310: mayf bel spaced: anyselectedfdistance. We'have found that 4%' inches: gives satisfactory results.- and this spacing is"` eflectedby 56'-picks-.of the loom. Wlienthezspac.r` `ingfoffthe transverserows of short vportions.isxl/gz, inches, the longitudinal-.rows arevalsospacedi/g inches; so that the tufts appear in squarergroups'. Of :course the invention is 'fnotnecessarily irestrict' edtof thisarrangement, as: thev groups mayv be staggered; Duringr the' weavingf period; thefcar riag'fe`23"V .may be idling' at theV starting positionzat.r the righty side ofthe machine, Figure l'. When thel carriage -isidling; the lever 91 vis inthe neutralor intermediate position andthe carn`9^8 isturned tobring thecam points193 andQ-f into engages ment'withfthe intermediate cam parts |00; and' shaft 1&1v is 3 shifted so that the bevel gears :11fand 18;?both disengagebevelgearol. The 'idlingl con-- tinues until thai-weaving hasy progressed so; that: g thev sandroller 2:2? haseadvanced the -wovenafabric so thatv the I longitudinal centers of-v the., fioating., portions4 |31; of the.: next transverses row. arei in, substantialalignment i withi the l. rotarycutter: 44: and; when this occurs;,,thes' jack lever l ili of :the f dobbyfheadis. operated" andipulls the44 Wire. I 24ste thefright; FiguresfflandZ.' When tl'risfoccurs; the'.

;/ right `and the shafta'l 9, shifted tothe right; andthe bevelgear. 1 1- brought into, engagement: Withf the.: bevelgeanl 16y while thefbevel gearfll remains out ofengagement @Withlthefbevelgear; 16.. The shaft; 19 is continuously driven andthis shaftiisrntat-f- 7al ingjinfthedireetion nf-'the-.arrovv-,- .Eigilrerl 2;. This 'carriage to the right.

per run of the sprocket chain 66 is travelling to the left,`Figure 1. Since the vertical plate 23 of the carriage is secured to this upper run, the carriage is now shifted longitudinally to the left, and the presser foot 49 will pass beneath the floating strand portions |3| in the transverse row andfthey will be severed. When the carriage is travelling to the left, the spring ||8 shifts the bar I I to the left so that the trip I I3 is adjacent to the lever |98, but spring ||8 is not strong enough to swing bell crank lever |98 upon its pivot. When the carriage approaches the end of its travel to the left and all floating strand portions have been severed, the leading axle 24 will contact with the depending portion ||1 of the trip III and the shifting bar will be shifted further to the left to swing the bell crank lever |98 upon its pivot. When the lever 91 is locked in the position to theright, spring 12| is under tension, and this spring will swing the lever 91 to the left when such lever is released and the tension of the spring |2| will then be relieved. When the bar I I I is shifted to the left by the carriage, the trip I I3 swings the bell crank lever |98 in the direction of the arrow, Figure l0, whereby the bolt |93 is moved out of the path of travel of the lever 91. This lever 91 being free, the spring |2| quickly shifts the lever 91 to the extreme left position, the jack lever |26 being in the original position. When this occurs, the cam 98 is turned so that the cam point 93 contacts with the high low part 99. This shifts the bar 84 and shaft 19 to the left and brings the bevel gear 18 into engagement with the' bevel gear 1B, and the bevel gear 11 out of engagement with the bevel gear 16. The shaft 19 continuing to rotate in the same direction, the direction of rotation of the gear 15 and shaft 60 is reversed and the upper run of the sprocket chain 66 travels to the right, moving the When the carriage vapproaches the end of its travel, to the right, the leading axle 24 contacts with the depending extension ||5 of the trip lever ||4 and the bar I II is shifted to the right. The trip I I8 now contacts with the lever 91 and swings it to the right and this turns the cam 98 so that the cam points 93 and 94 engage the intermediate cam parts |99. This shifts the shaft 19 to the intermediate position and moves bevel gear 18 out of engagement with bevel gear 16 and retains bevel gear 11 out of engagement with bevel gear 16. The shaft 19 is now disconnected from the shaft 69 and the carriage will idle at the starting position. This idling will continue until the jack lever of the dobby head again pulls the wire |24 to the right. Thus it is seen that during the major portion of the weaving periods the carriage is idling, and the carriage is automatically thrown into action at intervals, and makes a forward stroke and a back stroke in a continuous manner, and again idles. It is to be understood that the form of our in- 1 vention herewith shown and described is to be taken as a preferred example of same and that various changes in the shape, size, and arrangement of parts may be resorted to without departing from the spirit of our invention or the scope of the subjoined claims.

Having thus described our invention, We claim:

1. In a machine for severing. floating yarn portions upon a fabric, a track, a carriage mounted upon the track, means to sever the floating portions including a power operated cutter mounted upon the carriage, means to move the carriage in opposite directions and connected therewith and including a gear, a pair of driving gears arranged near the first Vnamed gear, and cam operated means to shift the pair of driving gears so that they both disengage the first named gear and then alternately move one driving gear into engagement with the first named gear while the other driving gear disengages the same.

2. In a machine for severing floating yarn portions upon a fabric, a track, a carriage mounted upon the track, means to sever the floating portions including a power operated cutter mounted upon the carriage, means connected with the carriage to move it in opposite directions and including a bevel gear, a pair of driving bevel gears arranged near the first named bevel gear, and cam means to shift the driving bevel gears axially so that they both disengage the first named bevel gear and then alternately move one driving bevel gear into engagement with the first named bevel gear while the other driving bevel gear disengages the same.

3. In a machine for severing floating yarn portions upon a fabric, a track, a carriage mounted upon the track, means to sever the floating portions including a power operated cutter mounted upon the carriage, means connected with the carriage to move it in opposite directions and to then idle including reversible gearing, actuating means for the reversible gearing including a movable element, a shifting device arranged near the car- Y riage and having parts disposed in the path of travel of the carriage to be moved thereby, a trip secured to the shifting device and arranged to engage the movable element and move it to the neutral position so that the gearing will cause the carriage to idle, means connected with the movable element and adapted to shift the same in one direction beyond the neutral position so that the gearing moves the carriage in one direction, latch means for releasably locking the element when shifted to the last named position, operating means connected with the latch means and actuated by the shifting device to cause the latch means to release the movable element, and operating means connected with the movable element to shift Vit in an opposite direction beyond the neutral position when such element is released by the latch means.

4. In a machine for severing floating yarn portions upon a fabric, a track, a carriage mounted upon the track, means to sever the floating portions including a power operatedcutter mounted upon the carriage, means connected with the carriage to move it in opposite directions and to then idle including reversible gearing, cam means for controlling the operation of the reversible gearing, a lever connected with the cam means, a shifting device arranged near the carriage and having trips to be engaged by the carriage so that the carriage moves the shifting device in opposite directions, a trip secured to the shifting device and arranged to engage the lever and move it to the neutral position so that the gearing will vcause the carriage to idle, a jack lever operated means connected with the lever to shift the same in one direction beyond the neutral position so that the gearing moves the carriage in one direction, releasable latch means for locking the lever against movement when shifted to the last named .caesars llease such lever, and:automaticimeansconnected vwith thelever .to shift itinan opposite direction beyondthe neutral position whenthe lever is released by the latch means.

i5. In :a machine for'severing floating yarngportions upon a fabric, a track, ya carriage mounted uponthe track, means to sever'the floating portionsincluding a power voperated cutter. mounted upon the carriage, means connected with thecarvriageto move it in opposite directions and-to then idle including a bevel gear, a'n axially movable rotatable driving element arranged near the rbevel gear, bevel gears mounted upon the driving element to rotate therewith and spaced a greater distance than the diameter of the firstrnamed bevel gear so that both .bevelfgears disengage therewith when the driving ielement is shifted axially to the vneutral position, cam operatil'i means to shift thedriving.elementaxially, a lever connected with the cam operated means toactuate the same, a shiftingy device arranged near the carriage and having trips disposed in the path of travel of the carriage so that the shifting'device is vmoved in the opposite directions by the carriage,'a trip secured to the shifting device and arranged to engage the lever and shift .the same to a neutral position to cause the carriage to idle, operating means connected with the lever to move it in one direction beyond the neutral position so that the carriage is driven in one direction, a latch to releasably lock the lever in the last named position,a pivoted lever to operate the latchito release the lever, a trip carried by the shifting device to operate the pivoted lever,'and a spring to move the first named lever inan opposite direction when released beyond the neutral position so that the carriage is moved in an opposite direction.

6. In'a machine for severing floating yarn portions upon'a fabric, a track, a carriage mounted upon the track, means to'sever the oating 'portions including a power operated cutter mounted upon the carriage, 'driving means connected with the carriage to rmove it'in'opposite directions and to then idle, 'a movable element 'connected with the driving means, means Aoperated by the movement of the carriage'and engaging the movable element to shift it to the neutral position, jack lever operated means connected with the `movable element to shift it in one direction beyond the neutral position, a releasable latch device to.

lock the vmovable element in the last named position, means'ope'rated by the movementof the carriage to 'actuate the'latchdevice to release 'the movable element, and automatic means connected with the movable element to-shift the same inA an opposite direction beyond the neutral position when released.

7. In a machine for severing-oating yarn portions upon a fabric, a track, a carriage mounted upon the track, means to sever the floating portions including a power'operated'cutter mounted ipon the carriage, driving means connected with the carriageto-move it in opposite directionsfand to then idle, said driving means including an axially movable element, a cam device to shift the axially movable element including. a pivoted cam having a low part, intermediate parts and a high part, a lever connected with the cam to turn it, jack lever operated means connected with Vth'e lever to shift it in one direction beyond theneu tral position, a releasable latch device to lock the lever in the last named position, means operated' by the movement ofthe carriage to actuate the .latchdevice to release .the lever, andautomatic means connected with the lever to shift the same inanopposite direction beyond the'neutral position when released.

8. In a' machine for severing iioating yarn por- -tionsupon afabric, a track, a carriage to travel longitudinally lupon the track, .a flexible endless element connected with the carriage to move. it longitudinally of the track,ia-presser foctmounted upon the carriage, a rotary Vcutter mounted Vupon the carriage near the presser-foot, and` gearing to drivethe rotary cutter including an element engaging the flexible element to be .driven thereby.

Y9. YIna machine lforsevering oating yarn portions uponfa-ifabric, a track,- a carriage mounted upon the track, .means to move the carriage including an endless element having upper .and lower runs, the upperrunbeing attachedtothe carriage, means to'sever Vthe floating yarn -por tions includinga-rotary cutter, and gear means driving the rotary cutter and including a rotary elementengaging the lower run.

10. In a machine for severing floating ,-y-arn portions Vupon a fabric, a track, a carriage `to travel upon the track, an endless sprocket-chain extending longitudinallyY of the track and including lupper and lower runs, an attaching device connecting the upper run vwith the carriage, spaced sprocket wheels carrying the endless sprocket chain, Vmeans connected with -one sprocket wheel to drive it, a presser foot mounted upon the carriage, a rotary cutter mounted upon the carriagenear thez'presser foot, gearing mounted upon the-carriage to drive the rotary cutter including a sprocket wheel to engage the lower run.

11.'In a machine forsevering floating yarn portions uponfa fabric, a'guidedevice, a'carriage to travel-upon thefguide device, -means to-sever the -fioating yarn portions including a cutting elementmounted upon the carriage, means connected with the carriage to moveit longitudinally of'the guide in Opposite directions andto then cause the carriage'to idle and including a control element, jack lever operated means connected with the control element tomove it in one direction,`means moved by-the'carriage to Vmove the control element in one direction, a releasable latch to hold the control element in' one position, means moved' by the carriage to actuate the latch to release the control element, and VVautomatic means connected with thecontrol` element toshift it in one directionwhen released.

l12. In a fina'chine "for severing Vfloating yarn portions upon a fabric, a track, a carriage 'to travel upon the track, means 'for severing the 'floating yarn portions mounted upon the carriage and including .a v'power driven cutter, driving means--connectedwith the carriage toimove it in opposite directions and'then 'cause the same to idleincluding a control element, jacklever operated 'me'ansconnected with the control element to shift it in one direction beyondthe'neutral Sposition, trip'me'a'ns moved by the carriage to shift the control element to the neutral position, va latch device toreleasably hold the control element in one position, trip 'means moved bythe carriage to actuate 'thelatchdevice to release' the control element, and automatic means 'connected with the control element to'move it whenf'released'in an 'opposite direction 'beyond the neutral .position.

13. In a machine for 'severing the'floatingp'ortionsof vafgroup of tuft forming strands carried 1 1 by a fabric, an endless operating element extending longitudinally of the group, a presser foot 'connected'with the endless operating element to be shifted thereby and movable along the fabric to pass beneath the floating portions, and a rotary cutter arranged near and above the presser foot and traveling therewith, and means engaging the endless operating element and operatedv thereby and serving to rotate the cutter.

14. In a loom, a guide element over which the fabric passes when being woven with tuft forming strands having floating portions arranged in transverse rows, a power operated mechanism to sever the oating portions and movable longitudinally of each row of floating portions to be severed, said mechanism including a cutter movable with relation tothe longitudinal travel of the mechanism, means to guide the power operated mechanism during its longitudinal movement of the row and to shift said mechanism transversely of the row so that the cutter severs the floating portions in succession substantially at their longitudinal centers, and means connected with the power operated mechanism to shift the same longitudinally of the row while the fabric is being woven.

15. In a loom, a guide element over which the fabric passes when being woven with tuft forming strands having floating portions' arranged in transverse rolls, a track extending longitudinally of the guide element, a carriage to travel upon the track and guided by the track longitudinally of each transverse row of floating portions in succession shiftable laterally in a direction longitudinally of the feed of the fabric being woven,l a power operated cutter mounted upon the carriage and movable with relation thereto to sever the oating portions in each roll in succession, a presser foot secured to the carriage for movement therewith and passing beneath the floating portions to guide the oating portions to the cutter, driving means connected with the carriage to move it longitudinally of the track, a jack lever of a dobby, and connecting means between the jack lever and the driving mechanism so that the driving mechanism is set into action by the movement of the jack lever.

16. VIn a loom, a guide element over which the fabric passes when being woven with'tuft forming strands having floating portions arranged Vin transverse rows, a track extending longitudinally of the guide element, a carriage to travel upon the track and guided by the track longitudinally ofY each transverse row of floating portions in succession to be severed and shiftable laterally in a direction longitudinally of the feed of the fabric being woven, a power operated cutter mounted upon the carriage and vmovable with relation thereto to sever the floating portions in the row in succession, a presser foot mounted upon the carriage to move therewith and arranged to pass beneath the floating portions to guide such floating portions to the power operated cutter driving means connected with the carriage to move it longitudinally of the track while the fabric is being woven, and means set into action by a movable part of the loom and connected with the driving means to actuate the driving means.

17.V In a loom, a guide element over which the fabric passes when being woven with tuft forming strands having floating portions arranged in transverse rows, a track extending longitudinally of the guide element, a carriage to travel upon the track and guided by the track longitudinally ofeach transverse row of floating portions in succession to be severed and shifted laterally by such track during its longitudinal movement, a power operated cutter mounted upon the carriage Aand movable with relation thereto to sever the floating portions in a row in succession, and driving means connected with the carriage to shift the same longitudinally'from the starting position and return the carriage to the starting position and then cause the carriage to idle at the starting position.

18. Fabric guide means, said fabric having woven therein tuft forming strands having floating portions arranged in rows, a track extending longitudinally of the rows, a carriage to travel upon the track, a presser foot mounted upon the carriage and arranged to contact with the face of the fabric and to pass beneath the oating portions and raise such floating portions, a rotary cutter mounted upon the carriage and arranged near and above the presser foot to sever the floating portions, an endless driving element extending longitudinally of the track and having one run connected with the carriage, a rotary element mounted upon the carriage and engaging the other run of the endless element to be driven thereby, and speed increasing gearing mounted upon the carriage and driven by the rotary element and driving the rotary cutter.

19. Fabric guide means for receiving fabric thereon as it is being woven for providing'tuft forming strands having floating portions arranged in transverse rows, a track extending longitudinally of the fabric guide means and transverse rows, a carriage to travel upon the track, a presser foot mounted upon the carriage and arranged to contact with the face of the fabric, the presser foot having a part to raise the floating portion, a rotary cutter mounted upon the carriage and disposed near and above the presser foot and rotating in a substantially vertical plane extending longitudinally of theV track to sever the floating portions in succession when the carriage is moved longitudinally of the track, driving means connected with the carriage to move the same longitudinally of the track and to move the rotary cutter throughout substantially the entire length of the transverse row of floating portions, a jack lever of a dobby, connecting means between the jack lever and the Vdriving means so that the driving means is set into action by the movement of the jack lever, and means to drive the rotary cutter.

20. An attachment for a loom on which is woven a fabric having tuft cords lying parallel to the fabric warp, said cords being woven in the fabric at spaced intervals in the length of the fabric so as to provide tuft loops, the loops in adjacent cords being substantially aligned in rows transversely of the fabric, said attachment comprising, in combination, guide means mounted on the loom and extending across the fabric. a cutting device mounted on said guide means for reciprocation lengthwise of said guide means and across said loops to engage and sever the latter, and means operable in timed relation with said loom for effecting reciprocation of said cutting device on said guide means, whereby said loops are severed to form a tufted fabric, said cutting device comprising a shoe dimensioned and shaped to pass between said tuft loops and said fabric, a cutting bladerpositioned adjacent said shoe for engaging and cutting said loops while said shoe is passing between the loop to be cut and the fabric, a common support for said shoe and said blade, and means mounting said support for displacement lengthwise of said fabric, Whereby said shoe may guide said blade into the correct position for the severing of the loops regardless of slight misalignment of the loops in a given row.

21. In a loom for weaving fabric, said loom having means for floating selected Warp yarns to form floating portions on the upper face of the fabric, an improved float cutting apparatus for severing the floated portions of the selected Warp yarns comprising a carriage, means for moving the carriage from one side of the loom to the other, at least one driven rotary cutting disk supported by the carriage, and disposed above the path of travel of the fabric being woven, the axis of said cutting disk being parallel to the warp yarns, means extending radially of said cutting disk and from opposed sides of the cutting disk for passing beneath the floated warp threads and directing the floated warp yarns to the cutting disk upon movement of the carriage across the loom and means allowing movement of the means 14 for passing beneath the oated Warp threads and the cutting disk longitudinally of the direction of travel of the fabric being woven.

JOSEPH KELLY MCCUTCHEN. DAVID A. TILLMAN.

REFERENCES CITED The following references are of record in the ille of this patent:

UNITED STATES PATENTS Number Name Date 592,714 Roger Oct. 26, 1897 606,406 Daymont July 28, 1898 701,578 Knowlton June 3, 1902 1,103,838 Rehfuss et a1 July 14, 1914 1,450,011 Wagner Mar. 27, 1923 1,557,345 Schumacher Oct. 13, 1925 1,865,118 Lindsjo June 28, 1932 2,192,410 Moore Mar. 5, 1940 2,293,666 Santon Aug. 18, 1942 2,445,024 Fiorina July 13, 1948