DE1246619B - A device attached to the shafts of a loom for creating a pearl weave of the free end of the weft thread on the edge of the fabric - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

D03d

German class: 86 c-13/01

Number: 1 246 619

File number: S 63816 VTI a / 86 c

Filing date: July 5, 1959

Opened on August 3, 1967

The invention relates to an induction device attached to the shafts of a loom a pearl weave of the free end of the weft thread on the edge of the fabric, in which on the one One or more needles for guiding binding threads can be adjusted on both sides of the chain are arranged and the other shaft is provided with a half shaft for guiding leno threads. ·

In the production of fabric strips in which two warp threads are wavy and run in opposite directions cross each other and a third warp thread (binding thread) for tying in weft threads is provided between itself and the other two warp threads, has so far been particularly in Shuttleless looms proceeded in such a way that of the three threads used there are two so-called braiding or knitting threads in the lower compartment, on the other hand the twine that goes between these warp threads lies in the upper compartment. Is the subject ge * ° closed, the twine moves from the upper to the lower compartment, being below the level of the two braided threads, which are always located in the lower compartment. Now they intertwine Umfkchtungsfäden each other and, before a new shed, the binding thread runs between them through, whereupon it returns to the upper compartment. This edge has the disadvantage that the edges of the Tissue due to a larger number of binding knots compared to the middle tissue part, in particular in the case of multiple-bonded tissues, grow. An even bigger disadvantage is that with every shedding, while the warp threads move from the upper shed to the lower shed, the binding thread must execute a movement downwards first and then upwards, which increases the requirements to the mechanism. This shortens the time it takes to keep the subject open, which is special is disadvantageous in fast-running looms.

The disadvantages of this known device, which produces a very simple pearl weave, is eliminated by another known device (Austrian patent specification 190S75), in which one is synchronized with a Sheet moving subframe two reciprocating reciprocating perpendicular to the chain direction Bars are arranged, which carry the warp threads, and with another sheet of the harness the loom is connected to a carrier for the binding thread. With this device a fabric strip made in which two warp threads cross each other in a wave shape and in opposite directions run and a third chain thread attached to the shafts of a loom Device for producing a pearl weave of the free end of the weft thread on the edge of the fabric

Applicant:

Sdruzeni podniku textilniho strojirenstvi, Chrastava (Czechoslovakia)

Representative:

Dipl.-Phys. Dr. W. Junius, patent attorney, Hanover, Abbestr. 20th

Named as inventor:

Vladimir Svaty, Reichenberg;

Miloslav Rina,

Jirikov, Rumburk,

Lubomir Taticek,

Reichenberg (Czechoslovakia)

Claimed priority:

Czechoslovakia July 12, 1958 (3704)

Incorporation of weft threads between itself and the other two warp threads is provided and at between the two crossing points of the warp threads as well as at the crossing points themselves a weft thread is tied in. Such a fabric strip should also be used by the device according to the invention getting produced.

This known device for producing such a fabric strip is not only in production complicated, but also in operation. It's not exactly easy to set up, this system is not easy to use for binding the inner edges in the manufacture of cut goods. The drive of the mechanism that periodically displaces the warp threads has so far not been satisfactory been solved because it is complicated and prone to failure. Another disadvantage of the systems listed is also the use of closed shafts, which carry the device for the pearl binding and which do not allow the chains to be changed easily.

The object of the invention is to address the disadvantages of those last described and mentioned at the outset Device through constructive completion

709 6W221

to avoid kommniing and daniii improvement. DL ¹ : - is essentially achieved in this way. that there is a pair of scissor-like scissor-like angular love for each of the two ropes of the wedges and the needles opposite each other on a common pin! arranged adjustably, the emc: leg is directed upwards and on the after de: "trowel to the knocked end possesses a thread guide for the leno thread and the other Sclien- and the other leg 5" or 6 " according to the Ketie 'Ii uerieniei The two scherenani "jimcordn ·« .-- I angle levers 5. 6 are spread apart, so that a mouth is formed between the two after the chain to gerichicien legs 5 ". 6". Each bearing pin 7 is fastened in a Malterstück 8, which is adjustable on an additional half shaft 9 in the longitudinal direction. These shear-shaped angular gables 5. 6 are on the upwards cerichteien

kei nacii of the chain is directed too. that these ic thighs 5 '. 6 'to the; after the chain zn a'ogeboge-

Schenkcl form a resilient mouth in which a Bolt bearing; isi. and that the two bolts each Pair of angle jacks] are connected to each other by a rod that is within two fiich- \\ ccT.se! perform a back and forth motion.

As a result, a very simple drive has been created which, due to its simplicity, is not susceptible to interference is :, a simple change of the blades gesiaitei and is also very easy to operate and set up. Can easily be done by moving the bolt on the rod and by moving the angle lever the device to another Fabric width can be adjusted.

A very favorable storage of the two bolts Gnawing rod can then be reached when the rod carrying the two bolts is in transverse bores the bearing pin of the angle lever is guided.

The drive is expediently done in this way. that for the reciprocating movement of the two bolts carrying Stance a cam disk driven by the loom via a linkage is provided, whereby for power connection between the rod via the linkage and the cam disk is a spring is arranged.

NEN end provided with thread guides 10 that are similar are, as with the needle 1 of the first part. For a needle there is one in each end of the angle lever Thread guide required. The total number of

ii thread guides determine the possible number Threads of pearl weave.

With each stroke of the half-shaft 9 (arrow SS) , the angle levers 5, 6 of one and the other pair are alternately pivoted against each other (arrow 5). so that the warp threads guided in the thread-guiding 10 cross one another. With the mutual movement of the shaft 4 and the half-shaft 9, the needle 1 goes with the guided thread between two threads of the scissor-shaped angular

= 5 levers 5. 6 through. The movement of the scissor-shaped Angle lever 5, 6 always happens at the time in which the needles 1 are out of range the angle lever 5. 6 are located, so that is when the threads in the angle levers 5, 6 the lower part of the shed and the thread in needle 1 form the upper part of the shed.

The movement of the angle levers 5, 6 is brought about by the linear movement of a rod 11, on which two bolts 12 are adjustable so attached

These special designs of the object _{35 s} j _{n (} j. That each bolt 12 is in the resiliently expandable part of the invention, which is the mouth of one of the two pairs of levers. This rod

11 is guided in a transverse bore of the pin 7 of the angle lever 5. 6, their movement is controlled by a Cam disk 16 via a lever 14 of a Ge

are labeled, enjoy, since these are genuine subclaims, patent protection only in connection with the main claim.

In the drawing, the subject matter of the invention is ₄₀ stänses 13. 14, which is rotatable about a pin 23 hand of a Ausführungsbeispisles shown. It and ^ in its one arm carries a roller 15, as well

by a pull rod connecting the other lever arm of the lever 14 to one end of the rod 11 13 derived. Pressing the roller 15 of the

at
show;

A device according to the invention fell in Elevation.

Fig. 2 is a plan view of FIG.], Partially in the ₄₅ lever 14 on the cam disk 16 is done by means

Cut, and

F i g. 3 is a side view of FIG. 1 on average.

The device for forming an edge in a fabric with cut weft threads consists of: of two parts.

The first part is formed by needles 1 with threading openings 2, the position of which is identical to the position of the thread loops (not shown). The needles 1 are connected on both sides of the chain edges with the aid of a spring 17 which is connected at one end to the half-shaft 9 and at the other end to the rod 11. This spring 17 pulls the rod 11 to the right, and the cam disk 16 acts against its pull. The cam disk 16 is driven in any conventional manner. z. B. by means of gears, chain and the like.

The longer angle lever 5 must of course be shaped in such a way that when pivoting ters 3 adjustably in a continuous groove 22 to 55, the angle levers 5 and 6 lift the shaft 4 which can be moved at a shorter angle in the direction of the arrow S. _ä! 6 reinforced leno thread through the longer one. For a device on an edge, angle lever 5 is not hindered,
a needle is required, but several pairs of angle levers 5 and 6 can also be used

rere needles in accordance with the number of; _n one and the same working position drawn, the thread guides in scissor-shaped angle levers 5.6 6c of the current position of the roller 15 at the Nokdes second part described below, per kenscheibe 16 and the position of the bolt 12 between according to the requested edge width, be present. the scissor-shaped parts 5 ", 6" of the angle jack] 5

The second part is made up of two pairs of scissors -and 6 corresponds. To press the angular arranged angle lever 5, 6 of which lever 5, 6 on the bolt 12 is a spring 20 which a pair of levers each at the height of the two goods with one end in the part S ″ of one of the winrands is arranged. The angle levers 5, 6 of each lever lever 5 and with the other end in the part 6 " The pair are rotatably mounted on a pin 7 so that the second angle lever 6 is suspended. Against that the one leg 5 'or 6' is upward twisting is dit rod 11 by a step

Claims (3)

24 secured on the bolt 12. These deposits penetrate into a groove 25 in the holder pieces 8. When the roller 15 moves onto the raised part of the cam disk 16, the lever 14 is pivoted around the pin 23 in a counterclockwise direction, which results in the bolt 12 being displaced to the left by the rod 11 from the position shown in FIG. 1 Has. This movement causes both angle levers 6 to pivot to the right and both toggle levers 5 to pivot simultaneously to the left, whereby the chain threads which are guided in their thread guides 10 cross over. Such an arrangement of the entire device is very simple, both for operation and especially for setting up. It enables a quick adjustment for a given chain width in a simple manner. The position of the edge device is achieved by simply loosening the tensioning screws 18 and by shifting one or both of the holding pieces S to the given chain width and by tightening the tensioning screws 18 again. Since the bolts 12 are fastened on the rod 11 independently of the holder pieces 8 of the scissor-shaped angle levers 5, 6, they can also be brought into the required position by simply loosening the retaining screws 19 and secured in this position by tightening the retaining screws 19 again . The position of the needles 1 on the holder 3 can also be changed in the groove 22 with the aid of screws 21. Another advantage of the device is the fact that the fastening of the device on the special half-shaft 9 enables a new chain to be laid without removing the pearl shaft, which remains permanently on the machine. The device works so that after! With the weft thread the shed begins to close, but the crossing of the edge threads guided in the angle levers 5, 6 must be completed before the shed is changed. The crossing takes place in such a way that the cam disk 16 drives either with its larger diameter or with its smaller diameter on the t5 roller 15 of the lever 14, the second arm of the lever 14 with the help of the pull rod 13 the rod 11 and that on it attached bolt 12 moves to the left or to the right. The scissors-shaped legs 5 ″, 6 ″, which are pulled together by the spring 20, open when the bolt 12 moves in the direction of the pin 7 and in the opposite direction to the movement of the bolt 12 they close again. As a result of the alternating opening and closing of the legs 5 ″, 6 ″ of the angle levers 5 and 6, the threads guided in their thread guides 10 are crossed over with respect to the threads guided in the threading openings 2 of the needles 1. The needle 1 with the thread mounted on the shaft 4 then passes between two threads guided in the angle levers 5 and 6, whereupon the compartment is opened again and the next weft thread follows. As the shafts continue to move, the needle 1 moves upwards with the shaft 4 and thereby moves away from the angle levers 5, 6 on the half-shaft 9. The weft thread is thrown again and the second crossing of the edge threads is carried out. This is how the three-thread pearl weave is created. Patent claims: 1. Attached to the shafts of a loom for creating a pearl weave of the free end of the weft thread on the edge of the fabric, in which one or more needles for guiding binding threads are arranged adjustable on one shaft on both sides of the chain and the other shaft with one Half-shaft is provided for guiding leno thread, characterized in that the half-shaft (9) has a pair of adjustable angle levers (5, 6) mounted on a common pin (7) on both sides of the chain and opposite the needles (1) , one leg of which is ( ', 6' 5) directed upwards and has, at which, after the chain cranked end of a thread guide (10) for the leno thread and the other leg eat ", 6" directed) to the chain as is that these legs (5 ", 6") form a resilient mouth in which a bolt (12) is mounted, and that the two bolts (12) of each pair of angle levers (5, 6) with one another are connected by a rod (11) which performs a back and forth movement within two subject changes. 2. Apparatus according to claim 1, characterized in that the two bolts (12) carrying Rod (11) is guided in transverse bores of the bearing pin (8) of the angle lever (5, 6). 3. Device according to claims 1 and 2, characterized in that for reciprocating movement the rod (11) carrying the two bolts (12) one via a linkage (14, 13) from Loom-driven cam disk (16) is provided, for the frictional connection between the rod (11) via the linkage (14, 13) and the cam disk (16) a Spring (17) is arranged. Considered publications:
German Patent No. 165,265;
Austrian patent specification No. 190 S75. 1 sheet of drawings 709 619/221 7. 67 © Bundesdruckerei Berlin