US3533452A - Filling-insertion device - Google Patents

Description

United States Patent Primary Examiner-Henry S. Jaudon A Itorney- Friedman and Goodman ABSTRACT: A filling-insertion device in a loom for inserting filling threads in the weaving of a fabric which comprises at least two filling guides through which a filling thread passes. said filling guides adaptable to traverse warp ends in said loom at right angles to said warp ends, each of said guides adaptable to traverse said warp ends independently of the, other and to carry filling thread therewith when traversing said warp ends from its normal position, a selvage thread guide adaptable to dispose a sclvage thread over filling thread when said filling guides have traversed said warp ends from their normal position, said selvage thread guide normally positioned on the opposite side of said loom from said filling guides.

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O .O 13 I3 IN VENTOR. G USTAVE ULRICH Attorneys FILLING-INSERTION DEVICE BACKGROUND OF THE INVENTION 1. Field of the invention This invention relates to a filling-insertion device. More particularly, this invention relates to a device for traversing filling yarn across a relatively narrow band of parallel running warp ends.

2. Description ofthe prior art Heretofore, weaving of substantially all fabric was performed on a loom provided with means for feeding the warp ends in a path generally parallel with one another and with means for interweaving the weft or filling picks across the warp ends. This latter means was generally a shuttle although more recently shuttleless looms have beeen employed. These looms have been used for substantially all types of fabrics regardless of dimensions.

It has been found that while the devices heretofore provided for weaving were generally suitable for the majority of fabrics, they were not suitable in the weaving of narrow tapes because they did not provide a finished selvage on the woven fabric. It thus became desirable to provide a loom which is suitable for weaving narrow tapes such as those employed for zippers and which provides a finished selvage on both sides of the fabric. More particularly, it became desirable to provide a filling-insertion device which is adaptable for use on existing loom frames which enables weaving narrow tapes with finished selvage edges on both sides of the fabric.

SUMMARY OF THE INVENTION OBJECTS OF THE INVENTION It is an object of this invention, therefore, to provide a loom which is suitable for weaving narrow tapes such as those employed for zippers and which provides a finished selvage on both sides of the fabric.

It is another object of this invention, therefore, to provide a filling-insertion device which is adaptable for use on exisiting loom frames which filling-insertion device enables weaving narrow tapes with finished selvage edges on'both sides of the fabric.

Another object of this invention is to provide such a fillinginsertion device which replaces the conventional shuttle and can be used in weaving ribbons and broad looms as well as tapes. 7

These and other objects and advantages of this invention will become more apparent from the following complete description, accompanying drawings, and appended claims.

STATEMENT OF THE INVENTION therewith when traversing said warp ends from its normal position, a selvage thread guide adaptable to dispose a selvage thread over filling thread when said filling guides have traversed said warp ends from their normal position, said selvage thread guide normally positioned on the opposite side of said loom from said filling guides.

In a particularly desirable embodiment, this invention con templates a filling-insertion device of the shuttleless type as aforesaid wherein the selvage thread guide is operable by means of rotation and rerotation to dispose the selvage thread over the filling thread when said filling guides have traversed said warp ends from their normal position. This desirable embodiment is suitably provided by provision of a selvage thread guide in the form of a tubular inverted L" having a yarn orifice at the end of the leg of the L" on the top side thereof. Yarn is fed into said selvage thread guide from a supply positioned therebelow. The guide is positioned so that the vertical portion lies in the plane of the filling guides just above the plane of the warp ends. The leg of the selvage thread guide ls long enough that depending upon rotation of the selvage thread guide it will lie within or without the path defined by the filling guides. Normally, the vertical portion of the tubular inverted L-shaped selvage thread guide is positioned proriimate the point at which the filling guide closest the wov eh fabric will come to but between that point and any point in the path of the next filling guide member. The leg ofthe L-shape'd selvage thread guide is positioned in altitude so that by rotation it can be swung over the filling thread carried by the filling guides closest to the woven fabric.

In another particularly desirable embodiment, this invention contemplates a filling-insertion device as above wherein means are provided to traverse said filling guides across said warp yarns and to extend the second filling guide furthest froih said selvage guide further across said warp yarns, means for depositing selvage thread over said filling yarn by rotating said selvage guide to a position over said filling yarn carried by the first filling guide, means for withdrawing said second fillihg guide while maintaining said first filling guide in traversed condition, means for returning said first filling guide to its original position and means for rerotating said selvage guide to its original position.

BRIEF DESCRIPTION OF THE DRAWINGS The invention can be more readily understood and appreciated by referring to the accompanying drawings, in which:

FIG. I is a side view of the device, showing the location of the filling guide 2 with the slot 17, the filling guide 4, the selvage or binder guide 6 and the location of the thread package 8 underneath the loom;

FIG. 2 is a perspective view, showing the open shed through which the filling guides 2 and 4, carrying the filling I0, have passed. The filling guide 2 is slotted, while the filling guide 4 has an eyelet, through which the filling thread passes;

FIG. 3 is a plan view of the device in starting position;

FIG. 4 is a plan view, showing the device after the first stage of the filling-insertion operation is completed;

FIG. 5 is a plan view, showing completion of the second stage of the filling-insertion operation; 7

FIG. 6 is a plan view, showing completion of the third stage of the operation;

FIG. 7 is a plan view, showing completion of the fourth stage of the filling-insertion operation;

FIG. 8 is a plan view, showing completion of the fifth stage of the filling-insertion operation;

FIG. 9 is a plan view, showing completion of the sixth stage of the filling-insertion operation;

FIG. 10 is a plan view, showing completion of the seventh stage of the filling-insertion operation;

FIG. 11 is a plan view, showing completion of the eighth stage of the filling-insertion operation. The reed or comb 20 is retreating to the starting position, with member I8 holding the filling 10 in proper pick-up position to slot 17 in filling guide 2';

FIG. 12 is a detailed plan view of FIG. 6, showing the position of the yarn, the filling guides 2 and 4 and the binder guide 6; and

FIG. 13 is a detailed plan view of FIG. 10, showing the position of the yarn, the filling guides 2 and4, the reed or comb 20 with post 19 and the member I8.

DESCRIPTION OF PREFERRED EMBODIMENTS through which selvage thread 12 passes.

It will be noticed, that the yarn is fed into the selvage thread guide through a conventional yarn tensioning device (not shown) from a supply 8 positioned therebelow. The guide 6 is positioned so that the vertical portion lies in the plane of the filling guides just above the plane of the warp ends. This is evident from the side view of FIG. 1 and the perspective view of FIG. 2. The leg 7 of the selvage thread guide is long enough that upon rotation of the selvage thread guide the leg is caused to lie within the path of the filling guides. Rerotation of 'the vertical position of the selvage-guide rerotates this portion out of thatpath. The tubular-inverted L-shaped selvage thread guide is positioned proximate the point at which the first filling guide 2. i.e. the filling guide closest the previously woven fabric will come to but between that point and any point in the path of the next filling guide member.

By referringagain to FIG. 1, a clear meaning of the relative position of the vertical portion of the guide 6 and the filling guides is achieved. The leg 7 of the L-shaped selvage thread guide is positioned in altitude so that by rotation it can be swung over the filling thread carried by the first filling guide 2.

The loom is provided with an ordinary reed or comb 20 which is reciprocally movable and which is positioned rearwardly of the filling-insertion device. i.e.. rearward of the most rearward filling guide. guide 4 in the embodiment shown.

When the reed or comb 20 moves forward toward the fell of the already woven fabric, an outwardly extending post I9 engages the filling thread I at a point A, shown in FIG. 8. Then the moving reed or comb 20 pushes the filling thread 10 toward the slot 17 on the end of guide 2 and parallel with the warp threads 22.

At a point B, in FIG. 9, a member 18 moves upward and I then, after picking up the filling thread 10, moves slightly outward in the direction indicated by arrow D to the position shown in FIG. 10. This action can be accomplished mechanically or electronically and is not shown here. This will clear the filling thread 10 from the path of the moving reed or comb 20 and bring the filling thread I0 directly in front and in line with the slot 17 of the filling guide 2, as shown in FIGS. 10 and 11.

When the reed or comb 20 moves away from the woven fabric, as indicated by arrow in FIG. 11, to the starting position shown in FIG. 3, the filling guide 2 also moves as indicated by an arrow to engage the filling thread 10 in the slot 17.

The warp ends 22 pass through heddles supplied by a warp beam, not shown. The filling thread 10 en route to the second filling guide 4 and the first filling guide 2 passes through a conventional tension device (not shown) and then through an eyelet in guide 25.

It should also be noted, that the filling guide 4 is positioned slightly higher than the filling guide 2 to allow the selvage thread 12 to readily interlace over filling 10 without slipping.

Operation of the device is easy. The start position is illustrated in FIG. 3 and each subsequent stage in the next suc ceeding FIG. until FIG. 11.

In the start position, both filling guides are in their normal position on the side of the loom, opposite the selvedge guide 6. The guides 2 and 4 are then caused to traverse the warp ends while the shed is open. The second filling guide 4 moves further across the loom and is on a higher level than filling guide 2. This moves the filling thread across the warp ends. The selvage guide 6 through which selvage or binder thread 12 passes from package 8 revolves clockwise one-half of a turn, causing the selvage thread to overlie the filling thread 10 as shown in FIG. 5. The second filling guide 4 is then caused to return to its original, normal position, while guide 2, the first guide, remains in the traversed position. This causes a large portion of the filling thread to retraverse the warp ends to the position shown in FIG. 6. Thereafter. as shown in FIG. 7, the

first filling guide 2 is caused to return to its original normal position.

In doing so, the filling guide 2 must free itself from the filling I0 by letting said filling l0 slip out of the slot I7 in filling guide 2, as shown in FIG. 7. This brings, with the help of the tension device, additional filling yarn to the opposite side of the loom from the selvage guide. This causes the filling yarn whieh remained on the selvage side of the loom to loop around the selvage thread as shown in FIGS. 7 and 8.

The selvage guide then rerotates counterclockwise to the original, normal position as shown in FIG. 8. The yarn tensioning devices, not shown, tighten the loop against the fabric by maintaining a constant tension of the filling thread 10 and the selvage or binder thread 12.

The reed or comb 20 thereafter pushes the inserted filling thread 10 to the woven fabric. e.g. tape. The shed than closes. thereby completing the weaving cycle.

An outwardly extending post 19 on the reed or comb 20 on the opposite side of the selvage guide 6 and a member 18 will pick up that portion of the filling thread 10 between the woven fabric. e.g. tape and the thread guide 4 while pushing or beating the inserted filling thread 10 to the woven fabric. e.g. tape. as depicted in FIGS. 8,9, 10 and 11.

This extension 19 on the reed or comb 20 is so constructed, that it will bring said filling thread 10 directly in line with the filling guide 2.

The member 18, illustrated in FIGS. 9, I0, 11 and 13 keeps the filling thread 10 in position with the slot in filling guide 2,

' while the reed or comb 20 is retreating to its original backward position.

When the filling guide 2 starts traversing the warp ends 22, the filling thread 10 is then securely engaged in the slot 17 of the filling guide 2 and the member 18 retreats to its original starting postion and slips free from said filling thread 10.

The device is in the start position, when the reed or comb 20 is not against the woven fabric. e.g. tape. as shown in FIG. 3. and the shed is open.

From the foregoing, it is readily apparent that a finished selvage can beprovided on both sides of the woven fabric, e.g., tape, as illustrated in FIGS. 12 and 13.

Thus, the device is particularly useful, where fabrics having finished edges are desired. The device is suitable in making tapes, ribbons and broadloom fabrics and can be readily adapted on existing looms to replace the conventional shuttle. The device uses a minimum of parts, all of which can be provided at a relatively low cost.

Preferably, mechanical and/or electromechanical synchronizing means are employed to synchronize the actuation of the various guides in their proper sequence at the normal high speeds presently in use in weaving fabrics. Additional advantages of this invention will be apparent to one skilled in theart.

The terms and expressions used herein have been used as terms of description and not of limitation as there is no intention, in the use of such terms and expressions, of excluding any equivalents, or portions thereof, as many modifications and departures are possible within the scope of the invention claimed.

lclaim:

l. A filling-insertion device in a loom for inserting filling threads in the weaving of a fabric which comprises at least two filling guides through which a filling yarn passes, said filling guide being adaptable to traverse warp ends in said loom at right angles to said warp ends, each of said guides being adaptable to traverse said warp ends independently of the other and to carry filling thread therewith when traversing said warp ends from its normal position, a selvage thread guide being adaptable to dispose a selvage thread over filling thread when said filling guides have traversed said warp ends from their normal position, and said selvage thread guide being normally positioned on the opposite side of said loom from said filling guides.

2. A filling-insertion device according to claim I, wherein said selvage thread guide is operable to dispose said selvage over said filling thread by means of rotation to a position over said filling thread when said filling guides have traversed said warp ends from their normal position.

3. A filling-insertion device according to claim 2, wherein a portion of said selvage thread guide is positioned within the path of said filling guides and adaptable by said rotation to dispose said selvage thread over said filling thread.

4. A filling-insertion device according to claim 3, wherein said selvage thread guide comprises a generally tubular inverted L-shaped member having a thread opening on the top side of the end of the leg of said said leg positioned higher than the first filling guide nearest woven fabric and the plane of said warp yarns.

5. A filling-insertion device according to claim 4, wherein the tubular inverted L-shaped selvage thread guide is postioned proximate the point to which said first filling guide traverses.

6. A filling-insertion device according to claim 5, wherein means are provided to traverse said filling guides across said warp yarn and to extend the second filling guide furthest from said guide further across said warp ends, means for withdrawing said second filling guide while maintaining the first filling guide in traversed position and means for returning said first filling guide to its original position.

7. A filling-insertion device according to claim 6, wherein said second filling guide is positioned higher than said first filling guide in their respective traversed conditions and said leg of said selvage thread guide.

8. A filling-insertion device according to claim 7, wherein beneath said loom there is a thread package containing selvage thread feeding said selvage thread guide.

9. A filling-insertion device according to claim 7, wherein rearward of said second filling guide there is a reed to dispose said filling thread against previously woven fabric.

10. A filling-insertion device according to claim 7, wherein there is a stationary filling guide through which filling thread passes en route to said first and second filling guides.

11. A filling-insertion device according to claim 9, wherein said reed is provided with a vertically extending post on its edge proximate the normal position of said filling guides to engage filling thread.

12. A filling-insertion device according to claim 1, wherein said first filling guide comprises a horizontally disposed member having a slot along its top surface for engagement with said filling thread.

13. A filling-insertion device according to claim 12, wherein a vertically moving member is provided in the longitudinal plane through said filling guides adaptable to engage filling thread when said thread is not in said slot of said first filling guide and to release said thread by vertical movement when said thread is engaged within said slot of said first filling guide.

14. A filling-insertion device according to claim 11, comprising a vertically reciprocating member adaptable to engage feed filling thread when said reed is disposing filling thread against said previously woven fabric to dispose said filling thread in alignment with said first filling guide and to hold said filling thread in said position between the time the reed is removed from'against said previously woven fabric and said filling thread engaged by said first filling guide.

[5. A filling-insertion device according to claim 13, wherein said vertically reciprocating member is adaptable to engage said filling thread and move it laterally toward said first filling guide.

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