US3425461A - Selvage tucking-in device - Google Patents

Description

Feb. 4, 1969 R. BERRY SELVAGE TUCKING-IN DEVICE Sheet Filed Oct. 14. 1966 1 as 2s 36 INVENTOR. RONALD BERRY ATTORNEY Feb. 4, 1969 R. BERRY SELVAGE TUCKING-IN DEVICE Sheet Filed Oct. 14. 1966 I N V E N T 0 R.

RONALD BERRY ATTORNEY United States Patent 7 Claims ABSTRACT OF THE DISCLOSURE A selvage tucking-in device for shuttleless looms having means for individually receiving and holding the end of a pick of filling extending from a warp shed, cutting said end to a uniform length and then tucking it into the shed formed by selvage yarn on the next shed opening.

This invention pertains to shuttleless looms of the type where filling is inserted by carriers from an outside source of supply and more particularly to improved mechanism for turning the fringe ends of filling back into the warp sheds for greater strength and better appearance of the selvage.

In this type of loom the filling is generally inserted in cut-lengths and may extend beyond the edge of the woven material at one or both selvages as a sort of fringe. In many instances this is not objectionable for the end-use of the fabric; however, where a more finished appearance is desired, other steps are necessary. One method is that of tucking each extending end of filling back into the warp threads which are forming the selvage portion. The instant invention provides means for maintaining control of each filling end as the extending carrier releases its grip and the end is beat-up to the fell. The extending end is then trimmed to a predetermined length and inserted into the shed to be beat-up with the subsequent pick.

It is a general object of the invention to devise improved mechanism for tucking the extending ends of filling picks into the sheds formed from the selvage yarn.

It is a further object of the invention to devise mechanism for maintaining positive control of the filling end during the reinsertion process.

It is a further object to devise a means by which all the reinserted ends will be of uniform length when beat-up.

It is a still further object of the invention to devise means for trimming the extended ends uniformly prior to insertion to the sheds.

It is a further object to devise a tucking-in device which shall be driven by, and synchronized with, the picking drive of the loom to automatically adjust to speed changes.

It is a further object to project a tucking-in needle downwardly and outwardly through theupper shed to ensnare the extended filling end and draw it into the open shed as the needle withdraws.

It is a still further object of the invention to devise a means for disposing of that portion of the extended end which is cut away to make the ends uniform.

These and other objects of the invention will become apparent as further details are described with reference to a specific embodiment thereof as shown in the accompanying figures of drawings, wherein:

FIG. 1 is a view in perspective of the tucking-in device showing its position relative to the left-hand temple and the warp shed;

FIG. 2 is an exploded view in perspective of a thread cutting and gripping member suitable for use with the device;

FIG. 3 is a diagrammatic view of a small portion of fabric showing the last beat-up end of filling extending from the selvage to the retaining tube with the temple removed;

FIG. 4 is similar to FIG. 3 showing the extended filling held by the gripper prior to reinsertion by the needle; and

FIG. 5 is similar to FIG. 4 showing the extended filling being drawn into the shed by the needle.

Now referring to FIG. 1, the mechanism of the invention is contained upon and is removable from the loom with a plate 20 having similar upright side members 21 and 22. Side member 22 is shown broken away to disclose the other parts more clearly. The plate 20 is fastened to the loom forwardly of the left-hand temple 23 in a position to act upon each pick of filling 24 as it is placed in the opened warp shed 25. It will be understood that the mechanism might be placed at either or both ends of the loom to perform the tucking-in operation. In shuttleless looms of this type, the picks of filling 24 are generally inserted as cut lengths and extend outwardly as at 26 from the selvage 27 (FIG. 3).

A hollow tube 28 is supported by and extends through a block 29. Fastened to the plate 20 by screws 30 and 31 is a bracket 32 having two downwardly extending bearing members 33 and 34. The bearing member 33 pivotally supports two upwardly directed links 35 and 36 connected at their upper ends by a bolt 37 and a sleeve 38. The bearing member 34 pivotally supports a lever 39 which is connected to the bolt 37 by a link 40 having a downwardly extending arm 41 secured to the block 29. Motion imparted to the link 40 will reciprocate the tube 28 from the filling holding position shown in FIG. 1 to a filling pick-up position to the left of that shown. The tube 28 may be connected to any suitable means for lowering air pressure and effecting a suction force at the open end 42'. The suction forces will take over the filling as it is inserted into the shed and maintain the extended end 26 under tension while moving to the holding position.

A driven shaft 42 is journaled between the side members 21 and 22 and may extend through the member 22 where any convenient loom driving shaft may be used for providing continual rotation. The shaft timing in the present instance is for one revolution for each pick of filling inserted; however, variations to this speed could be made. A cam 43 fastened to be rotated by the shaft 42 is in continual contact with a follower roller 44 secured to a lever 45. The lever 45 is pivotally suspended from a fixed shaft 46 which extends between the side members 21 and 22. An adjustable rod 47 connects the lower end of the lever 45 with the forward end of the link 40 and a tension spring 48 fastened to the plate 20 draws the follower roller 44 into contact with the cam 43. The dictates of the cam 43 will, by means of the linkage just explained, reciprocate the tube 28 rearwardly to take control of the pick of filling and forwardly to maintain its hold while the loom beats-up.

In order that the tucked-in ends will be of uniform length, a cutting device generally designated 49 is positioned between the selvage 27 and the tube 28 (FIG. 3). The cutting action is received from a cam 50 locked to the shaft 42 and in contact with a follower 51 which is fastened to one end of a lever 52. The lever 52 pivots in a vertical plane on a pin 53 secured in a block 54 which is fastened to the plate 20. The rearwardly extending end 55 of the lever 52 is urged downwardly by a spring 56 held by the plate 20. A lifting arm 57 extends through the lever end 55 and by it Will raise and lower a shaft 58 at the lower end of which is fastened a yarn controlling blade 59 (FIGS. 1 and 2). A bracket 60 is firmly fixed to the plate 20 by screws 61 and supports a collared bracket 62 by a screw 63. The shaft 58 is slidably contained within the bracket 62. Fastened to the rearwardly extending arm 64 of the bracket 62 by a keyed screw 65 are a cutter blade 66, the controlling blade 59, a gripper blade 67 and a plate 68. Tension to hold these parts in frictional contact is applied by a nut 69 and compression spring 70 placed upon the keyed screw 65 (FIG. 2).

The yarn controlling blade 59 has a receiving slot 71 in the path which the extended end of filling 26 will follow when moved to the holding position. The blade 59 when raised will cut the yarn against the cutter blade 66 and the loose portion of yarn will be swept away by the suction in the tube 28. The blade 59 and gripper blade 67 will hold the yarn in the extended position shown in FIG. 4 where it can be contacted and tucked-in by means to be explained.

The shaft 46 has two other downwardly extending pivotable levers 72 and 73, each of which carries a cam follower roller 74 and 75, respectively. Face cams 76 and 77 fastened to rotate with the shaft 42 will influence the rollers 74 and 75 which are biased by tension springs 78 and 79 both fastened to the lower ends of their respective levers 72 and 73. An adjustable rod 80 connects the lower end of lever 72 with a slidable supporting bracket 81 generally oblong in formation which moves above and away from the warp shed in a pair of channel members 82 and 83. The cam 76 will provide intermittent movement to the bracket 81 in timed relationship with the insertion of the filling by the carriers so that a rearward position will be assumed when the shed is opened to take yarn and a forward position when the shed is closed for the filling beatup.

Fastened to the rearwardly extending end of the bracket 81 a track guide 84 is positioned at a small angle downwardly toward the outer edge of the selvage. An adjustable rod 85 connects the lower end of lever 73 with a bellcrank lever 86 which is pivotally secured at 87 upon the slidable bracket 81. A rearwardly extending arm 88 of the lever 86 has a longitudinally directed slot 89 for transmitting movement to a slide block 90 by means of a pin 91 fastened therein. The block 90 slides freely in the guide 84 with the pin 91 extending through the slot 89.

A needle 92 is tightly clamped by one end in the block 90 and extends lengthwise through the track guide 84 as seen in FIG. 1. The other end of the needle 92 forms a forwardly directed curve 93 with a terminal hook 94 upon its under surface. The movement of the needle is from the retracted position shown in FIG. 1 to a projected position shown in dotted lines. The position of the track guide 84 when over the shed 25 places the needle 92 in position to project downwardly through the upper shed and outwardly to cam over the extended end of filling being held by the gripper blade 67 (FIG. 4). The gripper will release as the needle retracts and the end of the filling will be reinserted or tucked-in (FIG. and will be beat-up with the subsequent pick.

In operation, the mechanism repeats in continuing cycles in time with the insertion of each pick. For explanation, a cycle might start at the position shown in FIGS. 1 and 3. A pick has been inserted, has been beat-up to the fell, and the extending end is held by suction in the retaining tube. The supporting bracket 81 moves the track guide 84 over the shed and, as the needle 92 projects through the shed, the cutter is actuated allowing the severed end to be taken by the suction tube which then moves rearwardly to receive the subsequent pick (FIG. 4). The needle, being then moved forwardly by the track guide 84, will cam over the held filling then will be moved rearwardly by the movement of the track guide 84 and retract through the shed thereby drawing the cut end into the selvage (FIG. 5). The suction tube and the track guide will move forward to avoid the lay as it beats-up the subsequent pick.

With the instant invention positive reinsertion of uniformly trimmed ends is accomplished by means which may be easily applied to present looms. The mechanism is made readily adjustable for timing purposes and is not adversely affected by changes in loom speed.

While one embodiment of the invention has been disclosed, it is to be understood that the inventive concept may be carried out in a number of ways. This invention is, therefore, not to be limited to the precise details described, but is intended to embrace all variations and modifications thereof falling within the spirit of the invention and the scope of the claims.

I claim:

1. In a shuttleless loom of the type where filling from an outside source is inserted as cut lengths by filling carriers into warp sheds formed by warp yarn in said loom, said cut lengths of filling being beat-up to the fabric being woven and extending outwardly from the selvage of said fabric on at least one side, a tucking-in mechanism comprising:

(a) a filling retaining means for holding said outwardly extending length of filling upon release by one of said carriers and which is adapted to reciprocate between a filling pick-up position and a holding position,

(b) a filling end cutting means disposed between said retaining means and selvage,

(c) a supporting member having a tucking-in member movably disposed thereon between a retracted position and a projected position, and

(d) said supporting member including a pair of channel guides, and a bracket movably contained in said guides for intermittent motion toward and away from said warp shed.

2. Mechanism according to claim 1 wherein said filling end cutting means is fixedly disposed outwardly adjacent the selvage of said fabric and includes a yarn controlling blade having a yarn receiving slot therein, a cutter blade and a gripper blade frictionally supported on opposing sides of said yarn controlling blade.

3. Mechanism according to claim 1 which further includes camming means for providing motion to said bracket in timed relationship with said carriers.

4. Mechanism according to claim 1 wherein said tucking-in member includes a needle being movable angularly to the horizontal, said needle having a terminal hook for projecting downwardly through the upper shed and outwardly to said extending filling.

5. Mechanism according to claim 1 wherein said tucking-in member includes a curved needle being movable angularly to the horizontal, said needle having a terminal hook for projecting downwardly through the upper shed and outwardly to cam over said extending filling.

6. Mechanism according to claim 3 which further includes filling end cutting means fixedly disposed outwardly adjacent the selvage of said fabric, said cutting means including a movable yarn controlling blade having a yarn receiving slot therein, a cutter blade and a gripper blade supported in frictional contact on opposing sides of said yarn controlling blade, and wherein said tucking-in member includes a needle being movable angularly to the horizontal, said needle having a terminal hook for projecting downwardly through the upper shed and outwardly to said extended filling.

7. Mechanism according to claim 6 wherein said needle defines a forwardly directed curve adjacent said terminal hook, said needle being movable by and relative to said supporting member for placing said terminal hook into a camming relationship over said extended filling.

References Cited UNITED STATES PATENTS 2,185,308 1/1940 Pfarrwaller. 3,137,321 6/1964 Wasylewiez. 3,329,176 7/1967 Fluhmann 139194 1,564,603 12/1925 Martin l39-125 HENRY S. JAUDON, Primary Examiner.

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