US1769052A - Design-weaving attachment for looms - Google Patents

Description

.July l, 1930.` R. G. CLARK DESIGN VI'EWINGv ATTACHMENT FOR LOOMS Filed wrarclimls. 1928 4 Sheets-$heet Juy 1930a DESIGN WEVING ATTACHMENT FOR LOOWS Filed March 19, 1928 4 SheaeiswSheet y 2 www2 July l, 1930- R. G. CLARK $13,053

DESIGN WEAVING lATSFAGI'IMEN' FOR LOOMS Filed March 1,9, 1828 4 Sheets-Sheet 4 tached thereto,

o 445 cani,` and cam rollers; j

Patented July 1, 1930 UNITEDSTATS ROBEBTG. CLARK, `or BROOKLYN, New Yoan DESIGN-WEAVING ATTACHMENT non Looms Application led March 19, 1928. Serial No. 262,719.

My invention relates to devices for design Weaving and has for its main objects to provide a device by means kof which design weaving may be Ldone ata greatly increased 'rate of speed and with ay minimum expenditure of time and labor in setting upor` making ready the loom. v

Another object is to provide a device on which inexpensive patterns, enlarged duplicates of the designs to be 'woven and thus easy to make, may be used for transferring the designs to the fabric, and lon' which lthe design weaving may be started and stopped, while the loom is in operation, soas to inter- 1'5 weave plain fabric. A further object is to provide a device of simple and inexpensive construction, vautomatic ini` operation and requiringbut slight skill and'attention on the partofV the operator. p ,f i K I These and various other objects and advantages will be clearly understood from the followingV description and 'from the accomff' panying drawingsof preferred;` embodiments, but it will be readily seen that certain modifications might be niade withoutA departing from the scope of the invention; In the drawings, l I 'v l Fig. 1 is a front'elev'ati'on' of a `circnlar loom, drawn partly in cross-section and showing the''design-weavingl` attachment at- Fig. 2 ,is a fragmentary, cross-sectional elevation showin'gfparts of'b'oth the loom and the attachment, -I 'n Fig. 3 `is a side elevation of a modifican tion offtheattachment shovvnavithfparts of thefloom incrossv-se'ction, Fig.Y 4 is afrontelevation'of Fig. 3, Figs. 5 and 6 are, fragments` of certain parts of the loom',

Figs. 7 and 8 arediagrains illustratingfthe arrangement ofthe pattern onth, design rollers, andk ,i

Figs. V9 vand 11,0 are diagramsvof a certain.

' The loom` on which tliefdesigi-weaving attachment `is "employed wil-l fiirst-fbe d escribed 'in a general way. kThis loom is shown., and described vin detail in my f. eo*

pending" applicationSerialNo. 262,161" Itk isdistinctly understood, however, that this particular loom has been illustrated only to facilitate the description of theattac'hinent and thatlit is 'not the intention to limit Vthe use of the invention to such looms, but that I intend to employ it on any type of looms on which it may be used to advantage. i

The loom illustrated is a circular loom having a-plurality of warp thread bobbins 10 attached close tothe periphery `of a circularv table 11.` The warp threads 12 are 'engaged by the heddles 13 and 13a which lift and lower alternate threads so that the `iievolving shuttles v14g, which carrythe weft thread bobbi'ns 15, may pass between these threads. i The heddles are actuated by the K cams 16 and 17 which are annular anden-A tend around thefperiphery ofthe discwh'eel 18 which rotates onthe'stationary shaft 19; These camsv have wavy cam faces whichk pinions 21 to' which motion is impartedl by they spiral crown gear 22 rotatinglyinounted on the stationary shaft 19, are provided. with aprons 23 Aand ribs 24, 25, 26, 2'7'ja'n`d 23 they pass between them. The weft-threads 29, which are laid between the warp'threads by the shuttles, are pressedV into place by the Vcam-zftctuated 'ngers 30 which also feed the wovenfabric 31 up through a circular throatl 32. The fabric, which when hinished'` isl tubular,` is wound on the roller 'The table `11, the frame 34 and the shaft 35 are all supported byV a plurality of upright postsy 36.* This will suffice forthe description-(of,V the looingythe `design-,weaving attachiiient now be explained in detail. Y i Referring first to Figs. 1 and 2, a frame V37 is vsupported on ,the posts 36 some distancebelow the'ftablelli Tovthis'frame is v secured .a'pluralityv4 of bearings38 on which vcause the upv and down movements of 'the rwhich further separate the warp threads as eef the frames 39 are hinged. The patternV drums 40 ofwhich four are "shown in Fig.rv V 1, rotate'in bearings elformed on top of the frames 39. Each frame Vis provided with a w n cross bar 42 on top of which a` camroller ya ratchet wheel 48.

43 is mounted. All of these cam rollers are engaged against a cam ring 44, secured on a disc 45'which is rotatingly mounted on the stationary shaft 19. The cam rollers are held in engagement withV the cam ring by tension springs 46, secured as shown. The disc 45 is provided with an operating handle 47 and the face of the cam ring 44 is so designed that a slight rotating movement will force the cam rollers outward and thus the drums 40. In some cases the cam ring is so constructed that the movement of the handle 47 in one direction will disengage certain drums and a movement in the opposite direction will disengage certain other drums. The operation of these cams and cam rollers will be readily understood by referring to Figs. 9 and 10; in Fig. 9 it will be seen that a movement of the cam ring 44 in either direction will force the cam rollers 43 outward. In Fig. 10 it will be seen that, cam faces are only provided between every other cam roller, a movement of the cam ring in one direction will force half ofthe rollers outward, and a movement in the opposite direction will force the balance of the rollers outward. The cam faces are indi-V cated by the numerals 44n and 44". As the cam rings are interchangeable various other arrangements of cam faces may be employed.

he pattern drums are each provided with These ratchet wheels have been omitted on the three drums shown on the rigljit-hand side of Fig. 1,"but one is plainly shown on the drum on 'the left-Y hand side. 'The ratchet wheels are rotated by pawls 49 which are attached to rocher 'arms 50, pivoted in bearings 51 which are cast integral with'the circular casting A cam-engaging rodv 52:3 is attached to the other end ofthe rocker arm and is guided in a holeV drilled in the casting 52.

VVThe 'rods 53 all engage on the annular camVv 55, the face of which is wavyfso as to impart a rocking motion to the arms 50 as the disc wheel 1S, on which itis attached', rotates. The motion of the rocher arms causes the pawls 49 to rotate the ratchet wl'ieels and consequently the drums. Tension springs 56 hold the rods 53 in Vengagement with the cam 55, while pawls 57 prevent the drums from overrotating. The pawls 57 are adjustable'by means of screws 58' and are held in engagement by tension springs 5,9.,

Thehedd'les 13 and 1S, which areV bifurcated at' their upper ends to accommodate the warp'threads as shown in Fig. 5,1are

guidedj by .two annular, slotted, spacers' 60v and 61, one of which is attached to the table 11 andV one to the casting-'59% The lower ends of the heddles are formed with nar-v rowedportions 62 and 62a which engage, respectively, on the cams 16andV 17. As already stated, the faces Vojf'itheac camsV are wavy and impart an up and down movement to the heddles, in such a manner, that all the heddles are alternately up or down, prior to the passing of the shuttles.

A latch 63 prevents the heddles from falling off the cams when in the bottom of a wave, as would otherwise be the case. This latch, of which there is one for each heddle, normally engages in a notch 64 which is formed in the heddle. lVhen so engaged displacement of the heddle from the cam is impossible. Above the notch 64, a clearance space 65 is provided and if the latch is lifted so as to enter this clearance space, as shown by the dotted lines 66, the heddle will be displaced from the cam face, as shown by the dotted position 67. The latches, which normally lift and fall with the heddles, are provided with a feeler 68 at their lower ends and they are rockingly suspended in a slotted, annular spacer 69 whichv is secured to the casting 52.

If a raised pattern 7 O, such for example asshown on one of the drums in Fig. 1, is placed on oney or more of the drums, the feeler 68, as it is liftedfrom the face of the drum by the pattern, releases the latch 63ffrom the notch 64 and causes the heddle to drop from the cam face.V This causes the Warp thread in the particular heddle or heddles so displacedv to be lowered so that the shuttle may pass over such thread or threads. vThis transfers the design tothe Woven Vfabric asshown at 71. lThe heddles are restored to the cam faces by guides 72 which are riveted on theouter side of the caml6., As thefdrums are further removed from the center of the yloom than the woven fabric, the( patterns can be made several times larger than the design woven. This is plainlyshown in" Fig. 1. l

t is evident that any design may thus be transferred from: the pattern drums to the fabric. -If it is desired to lweave a design of greater length than can be accommodated en the drum itself, an endless belt 7 3 is em ployed. Y This arrangement is shown, in Fig. l. The belt, to which the pattern ,is attached, passes over lthe drum 40, over an idler' 74 supported on lan arm 7 5, and over a pulley 76 which is supported on--a swinging arm 77. It will be seen that by operating the handle 47, the weaving ofthe design may be stopped at any time and that, 'while so stopped, theloom will kweave plain fabric. Fig.-6 shows the thread spacing ring` 78 which is placed below the points 'of the needles land provided with easily threaded ynotches 79.

The 'drums so' 'far described, when sul plied with patterns, willr transfer' a plurality of designs lengthwise of the tubular fabric woven. Vllhen it is i desired to transfer a continuous;V design around the vfabric the modification shownlin Figs. 3, 4, 7 and 8 is employed. explained. l

, The looinis the same as previouslyrde scribed and the heddles `are actuated as beifore. Tlie pattern drums 80Which in this case vare rathernarrovv, are mounted on bearings 81 Which in turn are slidablyjmounte'd on brackets-82 secured to the frame 37 of the leom. l The ratchet 83 is placed on the drinn This modification Will new be shaft 84 and correctly aligned vviththe drum the paWls 92 Which are attached to a rocher arm 93 Which in tuin is pivoted on the,

bracliet 94. The other end of the rocker arm is actuated by a ring cam 95 which has a wavy groove .96. Drums of various sizes may be used by sliding the bracket 81 in the slot 97.

Fig. 7 shows hovv the drums are aligned by placing them on a center shaft 98 and an aligning` pin 997 Whilerthe patterns 100 are attached. Fig. 8 shows honT the drums are spaced around the circular loom; the Otlsetting of .the feelers Ymaking` this possible.

Havingthus described my invention, what l claim as new and Wish to protect by Letters vPatent is tive cam, rWhile the teelers are actuated byV the patterns;` and means for rotatingv said drum in timed relation tol the loom.

2. ln combination with a circular loom having independent cam-operated 'reciproe eating` heddles each of which engages 'a Warp thread; a pluralityot drums; patterns attached on said drums; a plurality ot drum- Yengaging feelers; equal to the number et WarpV threads employed 0n theleom, actuated said patterns ;V meansassociated With said veelers and said heddles torypreventing reeiprocatien 0i one or more of said 'heddles,

by'displacing it or them from its er their respective cam, vvhile the feelers are actu-y ated 'by thepatterns; means for rotating said drums in timed relation to the loom;

and means for disengagingone or merecrn `the drums at a time from said 'ieelersfp V3.1ncembination with a circular loom havingv independent cam-operated reciproeating heddles each of which engages a Warp thread; a plurality of drums; patterns attached on said drums; a plurality ot `drumengaging ieelers, equal to the number ot Warp threads employed ongthe leem, actu ated by said patterns; means associated with said eelers and said heddles for preventing reciprecation ot one or moreof. said heddles,

by displacing` it or them from its or their yrespective cam, While the feelers are actu? Vated by the patterns; means for rotating said 'drums intimed relation te the loom;

and ymeans` for disengaging all the drums s .from allL of; said feelers siifnultaneously.

ln combination' Withf a circular-loom tuated by said patterns; said ieele'rs having` their drum-engaging ends oiiise't so thata n plurality of. eelers may W'orlr on each drinn;

means connected with said eelers vand said heddles kfor preventing reciprocation ot one.

or more V0i' the heddles, by displacing,I it or them from its ortheir respective cam, While the feelers are actuated by the patterns; and means for rotating saiddrums in timed relation to the loom. r Y f n 5. 'In combination with a` circulan loom having independent cani-operated reciproeating hedjdles each etV which engages a Warp thread;v` a plurality of narrovvdrums; patternsattachedto said drums; a'plurality of drumfengaging feelers, equal to the number of Warp threads employed onA theV loom; (l

actuated by said patterns; ksaideelershanfing:.theirAdrum-engaging endsetlset so that a pluralityot eelers may engageon each` drum means connected. withV said 'feelers iand said heddles fori preventing` 'reciprocation. of oneorl moreof the lieddles by dis-v placingit or them from its or their respective` cam; while the feelers areV actuated by ternsfare being attached and for attachingl them correct relation te each other on the loom.

` rln combination with aiicircular loom having` y 'independent cani-operated reciproeating heddleseach ofivhichjengages a Warp thread; apluralityof narrow drums; patterns attachedon said drums; a plurality of drum-engagingeelers, equal tothe number oiLWarpthreads employed ontheloom, actu-l ated ".by saidpatternsgl-saidfeelers having.V

the patterns;ineans 'for rotating said drums intimed relationtothe loom; and means for l l'aligning allot said drums While'the pattheir drinn-engaging ends o iiset so that fla; j

, plurality of' teelers may engage on each -V drum; means n connected vwith j said feelers;

and'sa-id heddles for preventing reciprocation of one or more of the heddles, by displacing it oifthem from its or their re'- spective cam, While the eelersjare actuated by the patterns; means for rotating said drums in timed relation to the loom; and

said drumsA attached to slidably mounted brackets so that various sizes of drums may be employed.

7. In combination With a circular loom having independent cam-operated reciprov eating heddles each of which engages a Warp thread; one or more narrow drums; patterns'attached to said drums; a plurality of.

means associated With said feelers and said heddles for preventing reciprocation of one or more of said heddles, by displacing it or them from its or their respective cam, While the feelers are actuated by the pattern; and means for rotating said drum or drums in timedfrelation to the'loom.

ROBERTV G. CLARK.

drum-engaging feelers actuated by said patcating heddles each of which engages a Warp thread; a pluralityof drums; patterns attached to said drums; a plurality of drumengaging feelers, equal to the number of Warp threads employed on the loom so that .no rethreading is necessary when the patterns are changed; actuated by said patterns; means associated with said eelers and said heddles for preventing reciprocating of one or more of said heddles, by displacing it'or them from its or their respective cam,rvvhile the feelers are actuated by the patterns: and means for rotating said drums in timed relation to the loom.

9. In combination with a circular loom having `independent cam-operated reciproeating heddles each of which engages a Warp thread; a plurality of drums; patterns at-A tached to said drums; a plurality of drumengaging feelers, equal to the number of Warp threads employed on theloom so that a continuous design may be Woven transversely of the fabric, actuatedby said patterns; means associated with said feelers and said heddles for preventing reciprocationof one or more of said heddles, by displacing it or them from its or ,their respective cam,

While nthe feelers are actuatedl by the pat-V Y tei-ns; and means vfor rotating said drums in timed relation to the loom. Y Y

10. In combination with 'a circular loom having independent camoperated reciprocable heddles each of which engages a Warp '.thread; one or moredrums; patterns at,- tached on said "drum or drums, saidV patterns being` larger ythan the designs` reproduced V:from them; :aV plurality of drum-em gaging eelers -actuated by said patterns;

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