US1901435A - Tuft yarn frame for looms for weaving tufted pile fabric - Google Patents

Description

March 14, 1933. I 51:; CLARK 1,901,435

TUFT YARN FRAME FOR LOOMS FOR WEAVING TUFTED FILE FABRIC Original Filed May 23. 1930 INVENTOR.

Patented Mar. 14, 1933 U T-Box STATES PATENT" orrlca Y Etienne r. cream or DAMAaIsco'rrA, Mama, ASSIGNOR T0 MARSHALL FIELD MILLS CORPORATION, or P ILADELPHIA, rnnnsyrvamn, a CORPORATION or IENNSYL;

Mme i TUE-T YARN FRAME FOR LOOMS FORWEAVING TUFTED IPILE FABRIC Beflle of application Serial- No. 454,949, filed This inventionrelates to improvements in tuft'yarn framesor carriers for carrying and deliveringthe tuft yarns in looms for weaveach provided with a "rowof passages for receivingthe delivery end portions of the strands from the spool and for maintaining them in propcrlateral spaced relation.

A number of these frames are mounted in spaced parallel relation on a pair of'carrying chains which are actuated to bring the frames successively into ayarn delivering position,

and each time a frame is brought .into'such.

position, instrumentalities ofthe loom act upon the. delivery end portions of the yarn strands and draw them through the passages, and, thereafter, a cutting device cuts from the strand parts of sufficient length toform pile tufts, and leaves the ends of the yarn strands in position with relation to the frame or carrier to be acted upon by the instru mentalities of the loom thenext time the frame or carrier is brought into the yarn delivering position. p I

The object of my invention is to. provide a novel and advantageous means for produc- .ing friction upon the yarnstrands when they are drawn through theyarn passages, and, thereafter,for holding the delivery end por tions of the strands in even and uniform relation to the frame or carrier so thateach-time the frame or carrier isbrought into theyarn delivering position, yarn tufts of uniform length will be cut from the strands.

The invention resides in the novel .con-

struction, combination and arrangement of elements, hereinafter described and; claimed. In the accompanying drawing, illustrating the invention,

Figure 1 is a front View of one end portion of a tuft yarn frame, showing one form of.

embodiment of my invention, illustrating only a portion of the yarn strands on the spool carried by the frame. 1

Figure 2 is atransvei' se section through the same, online 22 of Fig. 1. v

the yarn strands 5 extend. These projec- May 23, 1930.- This application filed June 18, 1931. Serial Referring to the 'drawing, 8 designates the long body bar of the tuft yarn frame, t one end portion of a spool carried by the frame, and 5 the tuft yarn strands carried by the spool.

I The bar 8 is, provided withsuitable bearing arms for 'rotatably supporting the] respec tive ends of the spool, one end portion of the spool 4 anda bearingjarm 6 supporting it being shown in Fig. 1. 1 j The respective ends'of the body bar 3 are provided with oppositely disposed chainen gaging arms and latches like. thearm 7 and latch 8shown in Fig. 1, for connecting .the frame to the chains of the loom which carry the series" of tuft yarn frames thereof and bring V ering position. c p The bottom ofthe bodybar- 3'is provided with arow of transversely extending, laterally spaced plates 9'which are suitably connected to and project from} a longitudinally extending angle barlO secured tothebottom v of the body bar. .These plates'9 extend forwardly, of the forward surface 11 of the body bar 3. and provide passages 12'between them through which the free or delivery endportions ofthe tuft yarn strands 5. are drawn, the plates 9 serving to maintain the free end portions ofthe strands f in L lateral spaced relation. i i

The plates 9 are provided with forward and rearward, laterally extending projec- Y tions, 13 and 14, respectively,between which tions serve to prevent forward and rearward displacement of the strands .5 within the passages 12. Y

The parts provlding yarn passage s may be of any suitable form; The plates ,9

herein illustrated which form the passages 12 are designed for use in looms in which: grippers are employed which enter the'passages or spaces between the plates 9 and grasp the end portions of the strands 5 there 7 in and draw'them from the spool 4 and through the passages 12 until there. is sufiicient yarn extending below the line .15 to form pile tufts, whereupon thepile tufts are cut from the strands on the line 15 and sub:

sequently woven into the fabric being prov duced by the loom. This operation is performed each time the frame is brought into the yarn delivering position. i

Arranged adjacent to the forward surface 11 of the body bar 3 and extending longitudinally thereof, in parallel relation thereto, is a relatively thin, flat steel spring 16 between which and the forward surface 11 of the body bar 3 the yarn strands 5 are drawn when the strands are drawn through the passages 12 by the grippers. This spring or element 16 is supported at suitable intervals throughout the length of the body bar 3 by narrow brackets 17 which embrace the spring 16 and have their end portions soldered or otherwise suitably'secured to the bar 3. The brackets 17 are arranged above and in alinement with certain of the plates 9 so that the strands 5 may pass the brackets on the respective sides thereof without interference as the strands pass from the spool 4 to the passages 12.

The spring or element 16 may be removed,

from the body bar 3 by withdrawing it longitudinally from within the brackets 17 and it is inserted into the brackets 17 forwardly of the yarn strands 5 after the strands have been inserted into the passages 12.

The spring or element 16 is located a slight distance above the forwardly projecting portions of the plates 9 and it extends over all the yarn strands 5 which pass from the spool 4 to the passages 12. The space between thespring 16 and the forward'surface of the bar 3 is slightly less than the general normal diameter or thickness of the yarn strands 5 so that the strands will be compressed slightly as they passbetween'the spring and the bar, thereby causing the spring and bar to press against the strands and retard the movement thereof toward the passages 12. The elastic character of the spring or element 16 permits it to yield outwardly from the bar 3 to permit any irregularitiesin the diameter or thickness of the strands5 to pass between the element 16 and bar 3, the element 16. returning automatically to normal relation with the bar 3 after the passage of such irregularities. d hen the strands 5 are drawn through the passages 12, as previously described, the pressure of the sprin or element 16 against them will produce su cient friction to cause all the strandsto be drawn through the passages under substantially the same degree of ten- SlOIl;

After the strands 5 have been drawn through the passages 12 and cut on the line 15, as previously explained, the pressure of the spring or element 16 against them will hold them in the same position with respect to the bar 3 which they occupied previously to the cutting operation and prevent either the natural elasticity inherent in the strands or the tendency thereof to resume the curvature of their previously occupied positions on the spool 4 from causing an of the strands to move back or withdraw from the position which they occupy within the passages 12 atthe time the cutting operation takes place; Therefore, each time pile tufts are cut from thestrands 5, the delivery end portions ofthe strands will be left in an even row to be engaged by the loom gripper or other devices prior to the next succeeding cutting operation, resultin in the desired removal of pile tufts of uni orm length from the'st-rands 5 at each cutting operation.

This application is a refiling of applioation Ser. N 0. 454,949. I I claim as my invention:

1. In a tuft yarn frame, a body bar provided with spool supporting means and provided also with parts forming a row of passsages for-yarn strands and a yieldable element carried by and extending longitudinally of the bar and having an uninterrupted surface extending continuously across the paths of a multiplicity of yarn strands passing from'a spool supportedby said means to said passages and 'constr'ucted'to engage and press against the strands.

2. In a tuft yarn frame, a body bar provided with spool supporting means and provided also with parts forming a row of'passages for yarnstrands and a yieldable element carried by and extending longitudinally of the bar across the paths of yarn strands passing from a spool supported by said means to said passages and constructed to engage and press against the strands and means carried by the bar for detachably connecting said element thereto, said element being movable longitudinally into and from engagement with the last named means.

3. In a tuft yarn frame, a body bar provided with spool'supporting means and provided also with parts carried by'the bar and extending forwardly from the lower portion thereof andforming a row of passages for yarn strands and asingle, yieldable, friction producing'element carried by the bar above said parts and constructed to press against a multiplicity of yarn strands passing from a spool supported by said means to said passages.

4. In a tuft yarn frame a body bar provided with spool supporting means and provided also with parts forming a row of passages for yarnstrands, a, friction producing element carried by and extending longitudinally of the bar for engaging yarnstrands passing between the element and the bar to said passages and means for detachably connecting said element to the bar at spaced points longitudinally of the element;

5. In a tuft yarn frame, a body bar provided also with parts forming a row of pas .vided with spool supporting means and pro- 0 sages for yarn strands and a single, yieldable, friction producing element carried by the bar and having an uninterrupted surface constructed to engage a multiplicity of yarn strands passing between the element and the bar to said passages.

6. In a tuft yarn frame, a body bar provided with spool supporting'means and provided also with parts carried by the bar and extending forwardly from the lower portion thereof and forming a row of passages for yarn strands, a friction producing element carried by and extending longitudinally of the bar above said parts for engaging a multiplicity of yarn strands passing between the element and the bar and means for detachably connecting said element to the bar.

7. In an individually transportable tuft yarn carrier for looms, a frame or carrier proper, spool supporting means thereon, a series of yarn guides along and secured to said frame or carrier, and a resilient yarn-tension v ing sheet-metal strip for and common to a multiplicity of said guides, said strip being carried by and in substantial parallelism with the frame or carrier as a whole for movement into and out of tensioning relation to the yarns to be guided.

8. In a tuft yarn frame, a body bar provided with spool supporting means and provided also with parts forming a row of passages for yarn strands, a yieldable element carried by and extending longitudinally of the bar across the paths of a multiplicity of yarn strands passing from a spool supported by said means to said passages, and constructed to engage and press against the I strands and brackets carried by said bar at spaced points longitudinally thereof and having alined openings -therein through which the element extends.

. In testimony whereof I afiix' my signature.

EUGENE F. CLARK.

Images