US1989029A - Tuft pile fabric loom - Google Patents

Description

Jan. 22, 1935. E. w. STONE 1,989,029

TUFT FILE FABRIC LOOM Filed Aug. 12, 1933 3 Sheets-Sheet l ATTORNEY Jan. 22, 1935. I w STONE I 1,989,029

Filed Aug. 12, 1953 3 Sheets-Sheet 2 ATTORNEY Jan. 22, 1935.

E. w. STONE 1,989,029

TUFT FILE FABRIC LCOM Filed Aug. 12, 1935 3 Sheets-Sheet 3 ATTORNEY Patented Jan. 22, 1935 "I'EED STATES J'IILE FABRIC L'OOM T-Edwin W. .'Stone,'Longmeadow, .luass., assignor to Bigelow-Sanford'CarpetTCo Inc., Thompsonville, Conn, a corporation 'of Massachusetts.

Application August .12, 1933, Serial N0.'."684',7Q9' 5Cla'ims. (01.139 1) This invention relates to looms for weav'ing tuft pile fabrics, and more particularly, though not exclusively, to tuft p'il'e fabrics wherein the :pattern of the lpilesurf ace is reproduced upon the back.

' Titft 'pile fabrics such, ifor instance, :as .AX- .niinsteriand like carpets :and rugs, :astordinarily Woven present objectionable characteristics, especially where the pattern =01 the pile surface :is'to berreproducedxupon .the back. Thefirst of these isrdue to the looseness in the weave of the backing fabric with consequent liability 0f the tuft yarns being detached [during use. Second, the warp threads and iconsequently .pile forming tuft yarns which are placed about a holding weft shot between the warp threadsbecome distorted during weaving, =due' to the :fact that the warp threads :are not maintained intheir established pitch or laterally separated relation.

" 'One of the objects of the :present invention is to provide a tuft jpile fabric "loom with means whereby the ebjectionszheretoforeexisting in the I V "construction to out or part the tuft yarn 'after it resulting fabric are overcome; -a @close weave effected the backing fabric; anda uniform relation maintained in thewanps and pile forming tufts.

Ifhe invention and novel features thereof will bestbemade clear .from the following description ,and accompanying drawings of one .good form {30 thereof.

the layin its forward position beating up aiholding weft shot for the tufts; Fig. 4 is a similar view showing the lay and the transversely. extending bar in their backpositions;

Fig. is a similar View with some ofthe parts omitted showing the 'rear leg of the tuft yarns as being turned upwardly between the warp threads; r0 Fig. 6 is an enlarged detail of the transversely extending bar showing more particularly the relation of the threads and bar during weaving; and

Fig. 7 is a view similar to Fig. 5 showing a slightly modified form 'of the invention.

present invention. 1

the breast plate 3 over which the fabric -ap'asses "movement of parts ma'y be facilitated without too much friction ball "bearings 11 are preferably Fig. 3 is a view similar to that of Fig.1 show-mg The loom frame may be 0: usual and well known construction appropriate for the support of the operating parts "but 'it'as well-as other details -'of the Axn iinst'er loom tha'tare well kno'wn, are not herein shown and described, since the 5 details of such features fo'rm no 'part of "the The la-y '1 is mounted on the loom frame, as usual, for its'beat up movements which are imparted thereto'by'the usuafform o'fla-y operating mechanism, andinouhted 'upon the top portion of the lay is the reed 2Q Secured to the loom frame in fixed positionis as it is woven, a s usual.

Thetu'ft yarns 4 are introduced at the weaving 'point'by "the usual tube frames 5, only one of which is shown, and the transferring mechanism for taking-a tube frame from-the carrier or chain to the weaving point is not illustrated as it'iswellknown. V

"The cutters 6 and 7 may lihewi'se be of usual employed. *Secured to the hub portion of'the arms 10 is a lever 12 to which issecured one end of a spring 13' at 14, the other end of the spring beingsecured to a proper fixed point 15 shown, in the present instance, as being an eye bolt se- "cured -to thebreast plate, and the spring 13 acting through the lever 12 normally tends to move the arms 10 rearwardly.

Mounte'dup'on the arms 10, one preferably at each side of the loom, is the transverse bar 16,

the details of which will presently be described.

Ashereinbefore noted, the spring 13 normally acts to turn the arms 10 rearwardly about their axial support and'to limit such movement rearwardlythe lever 12 is provided with an'adjustable stop 17 which, when the arms and transverse bar are in their rearward position, engages the end portion l8-of the breast plate thereby limiting-the movement rearwardly. I

The arms 10 are provided with an adjustable bunter 19 which is shownin the preferred form of the invention as a screw bolt held in adjusted position by-the lock nutj20,so that on thebea'tup movement of the'la'y the hunter 19' will engage 55 'the lay beam at 21 and move the arms and transverse bar frontwardly.

As a modified form of this feature of the invention Fig. 7 shows the hunter as a roller 22 mounted on an adjustable bracket 23 secured to the arms 10, a slot 24 being provided through which passes a screw bolt 25 so that by loosening the latter the bracket 23 and perforce the roller 22 may be adjusted backwardly or frontwardly in accordance with the desired conditions. In connection with the modified form of bunter the lay may be provided with a cam portion 26 shown as carried by a bracket 27 secured to the lay beam.

The bunter either 19 or 22 by engagement with the lay on its beat up movement causes the arms 10 and the transverse bar 16 to be moved frontwardly, just prior to the time when the reed 2 might otherwise contact with the rear end of the bar 16.

The transverse bar 16 is of novel construction adapting it for maintaining the warp threads in their established pitchrelation during weaving and further adapting it for the support of the loops of the tuft yarns after they havebeen passed about the holding weft shot.

The transverse bar 16 has a series of grooves 28 which extend from the rear edge of the bar 16 frontwardly and as shown terminate short of the front edge portion of the bar. The grooves 28 are laterally spaced in accordance with the established warp pitch or lateral separation of the warp threads.

When the arms 10 and consequently the transverse bar 16 are moved back and forth between the lay and breast plate, as hereinbefore described, the lower walls of the grooves 28 move in an arcuate path 29 which, as indicated, is tangential to the plane of the warp threads, the result being that when the transverse bar is given its described movements the warp threads will engage the grooves 28 in the transverse bar and thereby be held in their established pitch or laterally separated relation.

As more clearly indicated in Fig. 6 the grooves 28 in the transverse bar 16 have the side walls 30 and 31 converging downwardly so that the warp threads engage the upper widened portion of the grooves during the movement of the cross bar and the warp threads will be guided into the grooves and restored to their proper established pitch relation should they have been disturbed from this condition.

The top portion of the walls or teeth which separate the grooves and which will be hereininafter identified as lands, is made of sumcient extent or flattened as at 32 for the support of the loops of the tuft yarns where they pass about the holding weft shot.

, Inasmuch as the grooves 28 have their greatest depth at the rear edge portion of the transverse bar, and the transverse bar is given a rocking movement about the shaft 9 as a center, the lands of the grooves will be raised above the warp threads lying in the grooves so that the loops of the tuft yarns will be firmly held about the holding weft shot during the beat-up movements of the binding weft shot.

In order that the downwardly extending leg of the tuft yarn 4 may be turned upwardly between the warp threads and about the back holding weft shot a comb 33 is preferably employed and as shown, it is mounted on the bars 34 supported on the rock shaft 35 and given appropriate movements, as usual, when the tuft yarn has been engaged by the holding weft shot.

In the cycle of the loom operation the tuft yarns 4 will be introduced at the weaving point by the tube frames 5, as in Fig. 1, whereupon a back holding weft shot is introduced into the shed and beaten to place, as illustrated in Fig. 3, and as the lay goes back the transverse bar 16 likewise moves backwardly and the lands thereof turn the lower leg of the tuft yarns into a substantially horizontal position, as indicated in Fig. 4. The comb 33 then acts to turn the horizontal leg of the tuft yarn upwardly about the holding weft shot, as indicated in .Fig. 5, so that when the binding weft shot is'introduced and beaten to place, the loops of the tuft yarns which are then supported upon the lands of the grooves in the transverse bar hold or clamp the loops in place to permit, the binding weft shot to draw such loops tightly about the holding weft shot.

Thus a tuft pile fabric is produced having a pattern on'the back corresponding to the pile surface, the backing fabric is tightly woven, the warp threads are maintained in their established pitch relation, and the tuft yarns which pass about a holding weft shot between the warp threads are uniformly spaced throughout the width of the fabric being woven.

What is claimed is:--

1. In a tuft pile fabric loom, the combination of a breast plate over which the fabric passes as it is woven, a transversely extending bar rearward of the breast plate provided with warp receiving grooves for maintaining all of the warp threads in their established warp pitch relation and lands between the grooves for engaging and supporting the loops of the pile forming yarns above the bottom of the grooves, and means for moving the bar towards and from the breast plate in a curved path tangential to the plane of the warp threads that the warp threads may engage the grooves and the pile forming yarns may have their loops supported on the lands between the grooves in laterally uniform spaced relation.

2. In a tuft pile fabric loom, the combination of the lay, a breast plate over which the fabric passes as it is woven, a transverse bar between the lay and breast plate having a series of lands for engaging and supporting the loops of pile forming tufts and warp receiving grooves for holding all of the warp threads in their established pitch relation, and means for imparting bodily movements to the transverse bar back and forward between the lay and breast plate in an arcuate path tangential to the warp plane that the warp threads may be received in said grooves to maintain their pitch distance and the pile forming tufts may be supported on the lands between the grooves.

3. In a tuft pile fabric loom, the combination of the lay, a fixed breast plate, a transverse bar between the lay and breast plate provided with warp receiving grooves gradually diminishing in depth from the rear edge of the bar frontwardly for holding all the warp threads in their established pitch relation and having tuft loop supporting lands between the grooves, and means for moving the bar bodily between the lay and breast plate in an arcuate path tangential to the warp plane that the warp threads may be engaged with the grooves of the bar and be held in their pitch relation and the loops of the pile forming tufts may be supported by the lands between the grooves when passed about a holding weft shot.

4. In a tuft pile fabric loom, the combination of the lay, a breast plate, a transverse bar mounted for rocking movement between the lay and breast plate and provided with a series of grooves and lands, the former having downwardly converging side walls for directing the warp threads into the grooves to maintain the warp threads in their established pitch relation, and the lands having tuft loop supporting portions, and means for moving the transverse bar between the lay and breast plate in a curved path tangential to the warp plane.

5. In a tuft pile fabric loom, the combination of the lay and breast plate, a bar extending transversely of the loom between the lay and breast plate and provided with grooves and lands extending transversely of the bar, arms mounted for rocking movement about an axis below the breast plate and supporting the said bar, a lever connected to said arms, a spring connected to said lever and normally acting to move the arms and bar rearwardly, and a hunter on one of the arms adapted to be engaged by the lay on the beat up to move the arms and bar frontwardly.

EDWIN W. STONE.

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