US1904939A - Loom for weaving tufted fabric and method of weaving - Google Patents

Description

' April 18, 19 3. Q E BARRETT 1,904,939

LOOM FOR WEAVING TUFTED FABRIC AND METHOD OF WEAVING Filed Aug. 18, 193 1 5 Sheets-Shea, 1

Inventor,

CharlesEdward Barrett Attorney A ri1'18, 1933. c. E. BARRETT 1,904,939

LOOM FOR WEAVING TUFTED FABRIC AND METHOD OF WEAVING Filed Aug. 18, 1931 5 Sheets-Sheet 2 Inve ntpr, n

Charles Edward Barrgtk y W 7mm I Attorney April 18, 1933. c, BARRETT 1,904,939

LOOM FOR WEAVING TUFTED FABRIC AND METHOD OF WEAVING Filed Aug. 18 1951 s Sheets-Sheet :5

T L- C B A v Inventor v Charles Edward Barrett Attorney April 18, 1933.

c. E. BARRETT LOOM FOR WEAVING TUFTED FABRIC AND METHOD OF WEAVING Filed Aug. 18,

Invent):

5 Sheets-Sheet 4 FigS- Charles Edward Barrett.

By %W@ Waco;

Attorney.

April 18, 1933.' c, E, BARRETT 1,904,939

, LOOM FOR WEAVING TUFTED FABRIC AND METHOD OF WEAVING Filed Aug. 18, 1931 5 Sheets-Sheet 5 28 Fig.2.

t m 0' u l n [n ITlVnt0T Charles Edward Barrett 0 By gfiwm/ 71 flab/WA I Attorney.

Patented Apr. 18, 1933.

CHAR: n rg wmn nimnn'rnfon 'Yo'NKERs; ironk, Assronoit lr'r'o Amnesia new tom:

Application filed Au ust 18, 1931 Serial nous szwa H i invention relates particularly to in provements in looms for weaving c'arpets of the Axminster type, and in methods of weaving, wherein the tuft yarns are of :extra 5 length and show; the pattern on the baclr of the carpet byreason of "their; extension ground weave, and having in general appearance the weave of an oriental rug. Qb- .10 jects are to providethis, type of weave by means of a loom which is conveniently constructed by readily made alterations in Axminsterlooms of the type set forth in United States Letters Patent, No.- 233,290, dated Oct.

-1 12, 1880, and No. 1,455,261, dated Nov. 27,

1923; Further objects are to provide a weave in which the groundjweave-isi concealed, and inwhichthetufts have increasedbo dy and the carpet has a heavy pileface. 7 Further .20 objects are to insure the positive insertion Figure 1 is a side elevation of aportion of a 100m. which embodies this invention, with partsin the position at rwhich the hold ng weft threads arepassedtthrough the loops of theltuftyarns', and including the-cams for 3 operating the reed.

-' Fig. 2' is a sirnllar elevation Withthe parts in the osition at whichthe tubefraineswith the tu t-yarn spools are at the carrier and including the knives for. shearing ofi the tufts and the cams for operating the comb.

1. y j Figs. 3 to 10 inclusive are positional views to a larger scale of the parts directly concerned inthe weave. i

v Figs. 11. and 12 are slde andfront views 4 respectivelyto one-half scale on the original noon ron wnisv'mc-rur rnn mu'mic ivrjnrnon or w vrtref mentto the carrier. through the warp and weft threads of the Fig.1? is a section showing how the tufts and lever 22 'from a .carn with threeihighi drawing 61%? Q j! ube -fi mdide clutch at: hatyel d in: thelposition of s m ering to. or from thecarrier;v

. Fig. 1318 a front vi 'w of! messi g t t.

pos t on of-release by the clutchandilattach? igs- 14 and 15 m end and spectivelyiof'the comb and combban v 1 F is- 6 be e onv nfie m hei i ed. scale of a portion ofthe weaveloosely woven.

are crimped andbound in thelweft'threads.

Referring particularly to Fig. 1, the warp consists of'threads a, b, and a in succession repeated acro s'stheloom; These are raised and depressed by heddles A Biand cgrespectively tofornithe shed; A reedQO beats the weave. It is. operatedtlirpugha link 21 points 23., 24, 25; each of which produces: beatyYThe loom therefore has "three beats to each revolution'of the Lcani. ,Tube frames 26 and spools 27 bring the tuft yarns teto the loom by. a tube framefcarrier.shown. .as; a chain 28. shown in Figs. .11 tol3, Teach be 'e S i br h to the le s -Pd i t o the h i i a edete ch en y a clutch 29 which detaches it. fro mithe chain and lowers it to the shed. The clutch is pivotally mounted a .leverfi-l O} which moves 17.

it transversely sin and, out engagement with thetube nam this lever is mounted/0 anarm3 1 thetwo constitutingijtrans ferring which the tube frame is transas it carries the tubeframedown to the shed softhat thef' ends ofwthetuft yarnsi will be d li s ede r af lv a sh n i 3:, whi h will be considered;asthe initial positional View, taken ust as a pair-V of weft threads have been beaten up byg-the reed andtheireed is returning. to-be followed hy the insertion 10f a row of tufts. (Arrows showthe direc- .tion of parts in motion at eachp'osition. The %0 from the chainto.the;shed., Through$. i

.a link 32 frorn' an arm 33 it is tilted forward spring-pressed brake pins '35.

tufts, therefore, strike the top of the reed as shown in Fig. 4, and the faces of the tips of the, tufts brush onto the face of the reed as the reed falls all the way back as shown in Fig. 5 between fifteen and forty degrees advance of the cam, and thereby holds the tips of the tuft yarns above the shed. With fifty degrees advance of the cam, as shown in Fig. 5, there is a further dip of the clutch togetherwith a tilting backward which brings the tips of thetubes downward and forward through the shed, as shown in Fig. 6, and the reed comes forward a little and pauses up to one hundred degrees of the earn from initial position. During this period the loop ing of the yarns is effected by bending them sharply at the points of emergence fromthe tubes. As the yarns are confined by the tips of the tubes they can have more body than if the tips of the yarns had to be passed between the warp threads. Through the foregoing positions the heddles are shifted to depress the binder warp threads 0 and to lift the stufier warp threads a and b to the shed. The clutch is rocked to bring the tips of the tubes forward and the reed comes forward a little to the position of Fig. l by which the bights of the tuft yarns are brushed forward in the shed. This opens the bights for the passage of the needle. The b-ights in the tuft yarns having thus been brought within the shed, they are held while a shot is being made by the needle 34 and a pairof holding weft threads 0, Figs. 16 and 17, are laid in the shed and through the bights in the tuft yarns. While the needle is passing, the reed is forward a little to guide the needle and to keep the loops of the tuft yarns from becoming loose on the back of the carpet. This is followed at the one hundred and twenty degree position of the cam with the beating up by the reed, as shown in Fig. 7, by the cam point 23 which has a fiat top to hold the reed forward and clamp the tufts against the pile'while the clutch with the tube frame rises to draw the tuft yarns tight around the weft threads within their bights, In order to give more tension to the yarns than is ordinarily provided on the tube frames, which may be such as are used withthe regular AX- minster weave, the clutch is provided with The clutch and the operating parts are of course duplicated at the opposite side of the loom. When the clutch has risen sufficiently to draw the tuft yarns for the next row of tufts, and while resting, and immediately upon the falling back of the reed, the comb 36 is brought up tobind the tufts against the pile in place of the reed. Also the comb bar 37 which has a flat top is brought up to hold the tufts tight in the back of the carpet. To effect this, the comb bar, which is supported through the arm 38 from the lever 39 is moved rearwardly from under the breast beam by the link tion of this description as shown 40 and lever 41 from the cam leaf 42, and upwardly against the tufts through a link 43, bell crank 44, link 45 and cam 46. The cam does not lift the comb to the full height while the tufts are being severed in order not to be in the way of the knife. In the meantime the stulfer warp threads a are being depressed, and at and before and after the one hundred and eighty degree position of the cam the parts are as shown in Fig. 8, the needle lays the binder weft threads m behind the comb and the knives 47, 48 are brought together to sever thetuft yarns.v As they fall back the comb is lifted to its full height.

' The clutch next returns the. tube frame to the carrier chain as shown in' Figs. 2, 11 and 12, and shifts transverselyto leave the tube frame hooked to the chain. In order to reducev the transversemovement requisite totake the clutch out of the way while the next tube frame is moved into position, means are provided to retract the brake pins consisting of a link 49 and lever 50 which bears against an abutment, conveniently provided by the flange 51, as the clutch is shifted.

Following the withdrawal of the needle and the laying of the binder weft threads m, the cam point 24 causes the reed to beat-up these threads behind the comb as shown in Fig. 9 at about the two hundredand thirtyfive degree position of the cam, at which point the reed has not quite completed the forward stroke. The comb is now retracted down and slipped from between the tufts and the binder weft threads and these threads are beat up and these are also beat up against the row of tufts above the binder weft threads m. This returns the parts to the'startingposiin Fig; .3. I claim, 1i

- 1. The combination in aloom for weaving tufted fabrics, of means for forming a shed of the warp threads, tube frames and tuft yarn spools, a tube frame carrier, a clutch for transferring the tube frames fromthe carrier to the shed and returning them to the carrier, brake pins carried by the clutch for directly engaging the faces of. the spool" flanges, means for moving the clutch transversely in and out of engagement with atube frame, and means for retracting the brake pins in the clutch concurrently with the release of theclutch. I r

2. The method of weaving tuftedfabrics which consists in forming'a shed ofwarp threads, loweringa tube-frame with a tuftyarn spool to'bring-the ends of the tuft yarns against a reed, and looping the tuft yarns

Images