US1662563A - Tube frame for tufted-pile-fabric looms - Google Patents

Description

E. F. CLARK TUBE FRAME FOR TUFTED PILE FABRIC LOOIS Filed July 9, 1925 'INVENTOR: EzqgencFUlarl6 4 ORNE Patented Mar. 13, 1928.

UNITED STATES PA'IIENT OFFICE.

EUGENE F. CLARK, OF LEAKSVILLE, NORTH CAROLINA, ASSIGNOB TO MARSHALL FIELD MILLS CORPORATION, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

TUBE FRAME FOR TUFTED-PILE-FABRIC LOOKS.

Application filed July 9,

guiding devices, such lengths being then out from the strands to form the pile tufts.

The present invention aims to improve the yarn guiding devices by providing a novel, simple and efficient construction thereof whereby the yarn strands are guided and held in proper spaced relation to be grasped by the grippers of the loom, and whereby the yarn strands may be quickly and easily inserted into the guiding devices both when the yarn frame is on .the loom, as occasion may require, and also during the pre aration of the yarn frame forthe loom w en the {Zarnstrands are wound upon the s ools or obbins and the free ends thereof Inserted 80 into the guiding devices. The invention thus obviates the use of temporary ides or holding devices and special threa ing ma chines and-permits the individual strands to be inserted into the guiding devices as they are successively selected in accordance wit a particular attern, during the preparation of the yarn 'ame for the loom.

The invention consists of the elements and the combinations of them hereinafter described and claimed.

In the accompanying drawings,- illustratingthe invention,

Figure 1 is a front view of a tuft yarn frame partly broken away and provided with tuft yarn holding an'd'guiding devices embodying my invention.

Figure 2 is a transverse section thereof, on line 2-2 of Fig. 1.

. Figure'3 is a section through the yarn holding and guiding devices, on line of- Fig. 2

' Referring to the drawings, {designates- 1925. Serial No. 42,393.

the frame, and 5 bracketssecured to and extending from the respective ends of the bar 4. The brackets 5 are of usual construction and they provide bearings for the trunnions 6 of thespool or bobbin 7 which extends parallel to the bar 4 and which carries the tuft yarnstrands 8 in the usual manner.

The frame .bar 4 is provided with a stri of th n angle metal 9, such as tin, which 1s fitted against the front and bottom surfaces of the bar and which extends longitudinally of and is secured to the bar by means of screws 01' nails 10.

The strip of angle metal 9 carries arow of spaced walls 11 which are soldered or otherwise suitably securedthereto and which project forwardly from the bar 4 and also downwardly therefrom and back beneath the same, as clearly shown in the drawlngs. These walls ,11 form yarn strand passages 12 between them for theyarn strands 8 which are drawn from the spool 7 down -through the passages.

The spaces between theupper end portions of thewalls 11 form entrance openingsfor threading the strands downwardly and longitudinally through the passages, as is necessary in prior constructions wherein the pasno sages are closed at the front thereof or are substantially tubular in form. Inother words, the passages 12 are closed only at the back and sides, leaving the fronts thereof entirely open for the easy threading of the yarn strands into the sameby moving the strands laterally. as distinguished from longitudinally, as heretofore, nto the passages. Embracing the upperend portions of'thewalls 12 are the central portions of flat" springs 13, the end portions ofwhich extend downwardly into the passages 12 and form a pair of fiat spring arms, 14 and 15 1n each passage. The, upper end portion of each spring arm 14 and 15 is indented into an opening in the adjacent wall 11 to hold the arm in place within its passage 12. The spring arms 14 and 15 of each pair converge downwardly from the entrance opening of its passage 12, and the lower or free end portions of the arms meet and lie flat against each other centrally of the ends and sides of their passage 12.

The spring arm 14 of each pair is indented at the surface thereof which is in contact with its companion spring arm 15. forming an opening, cavity or indentation 16 therein and forming a projection 17 at the opposite surface thereof; and the said companion spring arm 15 of each pair is indented to form a projection 18 which extends into the indentation or opening 17 in the adjacent arm 14.

The free end portion of each pair of spring arms 14 and 15 which are normally in contact with each other may be separated or moved apart within its passage 12 to receive a yarn strand between them, and, to permit a relatively wide range of opening between the arms of each pair within the narrow limits of the passage containing them to accommodate the yarn strands 8. I provide each wall 11 with a. hole or opening 19 to receive the projection 17 of the adjacent spring arm 14 when it is separated from its companion arm 15.

The yarn strands 8 are drawn by the yarn grippers -of the loom down through the passages 12 between the pairs of spring arms 14 and 15 therein and between the projections 18 on the arms 15, which are located in the forward portions of the passages 12, and ribs 20 which are located in the rearward portions of the passages 12 and which are formed on the metal strip 9 and extend longit ndinally thereof throughout the length of the row of walls 11.

The ribs 20 serve to provide small area contact surfaces between the rear walls of the pas ages 12 and the yarn strands 8 passing therethrough; and the projections 18 on the arms 15 serve as barriers to prevent the yarn strands 8 from accidentally leaving the passages 12 through the front openings thereof.

The springs arms 14 and 15 of each pairare widened, as illustrated, to contract the exit openings of the passages 12 so that they shall be narrower than the portions of the passages containing the spring arms 14 and 15, thus providing exit openings of sufiicient narrowness to retain the strands 8 in roper position to be grasped by the loom grippers, and providing the required room within the passages to accommodate the spring arms.

.The lower end portions of each pair of spring arms 14 and 15 are flared or extended outwardly, which, with the converging upper portions of the arms of each pair, permits the arn strands to be easily passed between tie arms of each pair when the strands are threaded into the passages 12 through the front openings thereof; and, when the strands 8 are thus threaded into the passages and between the spring arms 14 and 15, the smooth inclined sides of the projections 18 permit the pressure of the yarn against 'the same, during the threading operation, to separate the spring arms 14 and 15 sufiiciently to move the yarn back into position back of the projections 18, after which the spring arms 14 and 15 spring back against the strands 8 and hold them in place by the pressure exerted against them.

\Vhen the device is used in a loom, the yarn carrier is periodically presented to the yarn grippers which, at each presentation, grasp the free end portions of the yarn strands 8 and draw the strands down through the passage 12 and between the spring arms 14 and 15 until lengths of the strands corresponding to the lengths of the tufts to be inserted into the pile fabric have been drawn below the passages 12 or walls 11, whereupon the said lengths are cut from the strands beneath and close to the bottom of the walls 11. Each time the yarn strands are thus drawn down through the passages 12, the spring arms exert sufficient friction upon the strands for the production of the desired tension of the strands, and, thereafter, the spring arms hold the free end portions of the strands in place for a succeeding drawing and cutting operation.

I claim as my invention:-

1. In a tuft yarn frame a body bar, a row of spaced walls projecting therefrom and forming yarn strand passages between them, each passage having an entrance opening and an exit opening connected by a front opening through which a yarn strand ma be threaded, and a yielding barrier in eaci passage permitting a yarn strand to be threaded into the same through its front opening and preventing a yarn strand from accidentally leaving the passage through its front opening.

2. In a tuft yarn frame a body bar, a row of spaced walls projecting therefrom and forming yarn strand passages between them, each passage having an entrance opening masses and an exit opening connected by a front opening through which a yarn strand may be threaded, and springs embracing said walls at the inletopenings of said passages andextending into said passages and adapted to frictionally engage yarn strzfnds passing therethrough.

.4. In a tuft yarn frame a body bar, a row' 'of spaced walls projecting therefrom and forming yarn strand passages between them,

and an exit opening connected by a front opening through which a yarn strand may be threaded, and springs embracing said walls at the inlet openings of said passages and having free end portions extending "into said passages and terminating in spaced relation to the outlet openings thereof and adapted to frictionally engage yarn'strands passing through the passages.

5. In a tuft yarn frame a body'bar, a row of spaced walls projecting therefrom and forming yarn strand passages between them, each passage having an entrance opening and an exit opening connected by a front opening through which a yarn strand may.

be threaded, and springs within said passages and adapted to frictionally engage walls at the inlet openings of said yarn strands passing therethrough, said springs having laterally extending portions forming barriers permitting yarn strands to be threaded into said passages through the front. openings thereof and preventing yarn strands from accidentally leaving said passages through the 'front openings thereof.

6. In a tuft arn frame a body bar, a row of spaced .wal s projecting therefrom and forming yarn strand passages between them,

each passage having an entrance opening and an exit opening connected by a front opening through which a yarn strandmay be threaded, and springs embracing said and extending into said passages and adapt ed to frictionally engage yarn strands passng therethrough, said springs having laterally extending portions forming barriers permitting yarn strands to be threaded into said passa es through the front 0 enings thereof and preventing yarn stran sfrom accidentally leaving said assages through the front-openings, thereo 1 7., Ina tuft yarnframe a body bar, a row of spaced Walls projecting therefrom and forming yarn strand passages between them, each passage having an entrance opening ass'ages and an exit opening connected by a front opening through which a yarn strand may be threaded, and springs embracing said Walls at the inlet openings of said passages and having free end portions extending intobarriers permitting yarn strands ,to bethreaded into said passages through the front openings thereof and preventing yarn strands from accidentally leaving said passages-through the front openings thereof.

8. 'In a tuft yarn frame a bod) bar, a row of spaced walls projecting therefrom and forming yarn strand passages between them,

each passage having an entrance opening each passage having an entrance openingand an exit opening connected by a front opening through which a yarnstrand may be threaded, and a pair offlat spring arms within each of said passages, the arms of each pair being adapted to receive-a yarn,

strand between them and to frictionally engage the same.

9. In a tuft yarn frame a body bar, a row of spaced walls projecting therefrom and forming yarn strand passages between them,

each passage having an entrance opening and an exit opening connected by a front opening through which a yarn strand may be threaded, and a air of flat spring arms within each of sait passages, the arms of each pair being adapted to receive a yarn' strand between them and to frictionall engage the same, one arm of each pair eing indented at one surface formin tion at its opposite surface constituting a barrier permitting a yarn strand to be threaded into its yarn strand passage through its front opening and preventlng ayarn strand from accidentally leaving the passage through its front opening.

10. In a tuft yarn frame a body bar, a row a projecof spaced walls projecting therefrom and forming yarn strand passages between them, each passage having an entrance opening and an exit openingwconnected by. a front opening through 'which a yarn strand may be threaded," and a pair of flat spring arms within each of said passages, th e arms of each pair being adapted to weave a yarn strand between them and to frictionall en Y gage the same, one arm of each pair eing" indented at one surface forming a projecti'onat' its opposite surface constituting a barrier permitting a. yarn strand to be threaded into its yarn strand passage through its front opening and preventing a yarn strand from accidentally leavin passage through its front opening, an the other armof each pair having an opening therein to receive the projection of its com: 1-

panion arm.

11. In a tuft yarn frame a body bar, a row of spaced walls projecting therefrom and forming yarn strand passages between them, each passage having an entrance opening and an exit opening connected by a front opening through which a yarn straml may he threaded, and a pair of flat spring arms within each of said passages, the arms of each pair being adapted to receive :1 yarn strand between them and to frictionally engage the same, one arm of each pair being indented at one surface forming :1 projection at its oppoite surface constituting :1 barrier permitting :1 yarn strand to be. threaded into its yarn strand passage through its front opening and preventing a yarn strand frotn accidentally leaving tlte passage through its front opening, and the other arm of each pair having an indentation therein to receive the projection of its companion arm.

12. In a tuft yarn frame a body bar, a row of spaced wallsprojecting therefrom and forming yarn strand passage; between them, each passage having an entrance opening and an exit opening connected by a front opening through which a yarn strand may be threaded, and a pair of flat spring arms within each of said passages, the arms of each pair being attached to the walls of its yarn strand passage at the inlet opening thereof and having free end portions extending toward the exit opening of the passage and adapted to receive and frictionally engage a yarn strand passing therethrough, and the exit openings of said passages being narrower than the portions thereof containing said pairs of arms,

13. In a tuft yarn frame a body bar, a row of spaced walls projecting therefrom and forming yarn strand passages bet ween them, eaclt passage having an entrance opening and an exit opening connected by a front opening through which a yarn strand may be threaded, and flat springs embracing said walls at the inlet openings of said passages and terminating in a pair of arms within each passage extending toward the exit opening thereof and adapted to receive and frictionally engage a yarn strand passing th1a-ethrough, the exit openings ofsttid passages being narrower than the portions thereof containing said pairs of arms.

14. A tuft yarn frame having a series of passages to receive yarn and provided with :1 series of rigid walls forming entrances for grippers spaced uniformly with Zilltl yarn passages, each yarn passage being provided with a broadside threading entrance whereby said passages can be threaded by hand.

15. A tuft yarn frame having a multiplicity of broadside hand threading passages to receive yarn, each patsage being formed and constructed at one end tltereof with an entrance for a gripper, and provided with means for imparting friction to the yarn intermediate the said gripper entrance and the source of yarn supply.

In testimony whereof I atlix my signature hereto.

EUGENE F. CLARK.

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