DE182397C - - Google Patents

Description

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IMPERIAL

PATENT OFFICE.

The invention consists in a net tying machine for tying a fish net or Weaver knot.

Net knotting machines in which this type of knot is formed are already known but their movements are comparatively complicated, and experience shows that they do not tie the knot so perfectly, as is possible by hand, or

ίο if the knot is satisfactory, so is that quantitative performance of the machine inadequate.

The main drawback of most machines of this type is that they remove the warp threads not energize at the right time and in the right way. If a single device, for example a Tree, applied to tension the whole chain at once, so finds an uneven one Stretching of the chain takes place because of the amount of stretching in the individual threads and even in the individual Parts of one and the same thread is different. To avoid this, one already has suggested that each thread be tensioned individually by springs. Here is the permanent Tension sometimes too small and sometimes too big.

Another drawback with these machines is that the one used to generate a Mesh required passage either by moving the chain thread bobbins or, when coils are not needed, by unwinding the chain boom is caused. The first-mentioned method involves moving a heavy mass over a considerable distance, while the second method requires the use of guide tubes to guide the warp threads to give the hooks so that they form a loop. Since applying a Tree for the warp threads a different stretch of the individual threads is not Takes into account, irregularities arise in the formation of knots.

Another disadvantage in these known machines is that the boats must be moved sideways in the comb for each weft to the weft threads to tie the knot on the right side of the warp threads. These Movement complicates the machine so that it is easily disordered.

According to the present invention, these inconveniences are now to be avoided. the Chain thread bobbins are carried by a fixed platform and used for manufacture The amount of thread length required for each row of stitches is determined by a special take-off device withdrawn from the coils. Each thread is loaded with one or more weights, which are placed as required or can be hung up to provide the tension needed during some movements only when necessary to bring about and to change in size.

The spool carriages are moved back and forth in fixed combs in the radial direction.

moves away, with each shuttle always remaining in the same row because there is none on the side Movement is needed.

A net knotting machine of the type indicated is shown in the drawings, in which Fig. ι part of the rear view, Fig. 2 part of the floor plan of the machine represents. The other figures are drawn to a larger scale and

ίο interpret:

Fig. 3 is an end view, Figs. 4, 5 and 6 are parts of cross-sections along lines 4-4, 5-5 and 6-6 of Figures 1 and 2. Figures 7-14 are schematic pictures showing, in different positions, the parts involved in the Knot formation "are involved.

The individual parts of the machine are appropriately supported by four parallel frames, two end frames α α and two inner frames a ¹ a ^l . Between the frames α ¹ α ^Λ intermediate frames a ² can be arranged for guiding and carrying. In the frame α and a ¹ some of the thumb shafts and levers are mounted, which give the working parts carried between the frame a ¹ a ^{1 their movement.} Details of these parts are drawn in FIGS. 3, 4, 5 and 6.

The drive shaft b (Fig. 3) drives through a

Translation of the shaft c , which extends lengthwise through the entire machine and in turn is coupled ^{with three thumb shafts c 1} c ² c ^3.

The warp thread bobbins d (Fig. 5) are mounted on a bench which extends under the machine in the space between the frame a ^l a ¹ . The thread d ¹ of each bobbin runs through a hole in a guide rail d ² via a take-off and clamping device d ³ d ^l , through a hole in the rail ^{d 5} , under the rail d ^% , through a hole in the rail d ⁷ and via rails d ^s and d ⁹ to the knot-tying devices described below.

D between the rails ⁵ and d ° d between the rails ⁷ and d ^s and further between the rails d ^s and d ^9, the thread passes through the eye of a tension weight e and e ¹ and e of two weights. ² The tension weights e always hang on the thread to compensate for the decrease in tension. The weights e ¹ and e ² are used to tension the thread at certain times when making the knot; as long as they do not have to meet these gave up, they will ff by the rails' ^two supports extending under the set of weights out corresponding to the number of warp threads. These rails move vertically up and down, for which purpose each end of each rail is supported by pieces ff and slides in suitable guides f attached to the frame a ^2. The pieces f are hinged to one end of levers g which have their pivot point on the frame a ¹ in g ¹ and which are moved by the thumbs g · ² on the shaft c ³ . A lever g is drawn in Fig. 6 in the position which these levers have when the rail f ^{1 has} arrived at the upper end of its aisle. The pieces f are hinged to .. levers h , which have their pivot points in h ¹ on the frame a ^l and are influenced by the thumbs h ² on the shaft c ² . Since the purpose of the weights e ¹ and e ² is to tension the thread at a certain time, any other equivalent device which acts on each thread in the same way can be used. The machine can also be made to operate with a reciprocating tree tensioning all the threads equally, but this arrangement is not as effective as one in which each thread is tensioned individually.

If you follow the chain thread further, it runs, after it has been guided over the rail d ⁹ , through the eye of a needle i, from where it bends vertically upwards in order to run over an intermittently rotated roller k that supports it a second roll k \ which is in frictional contact with the first, whereupon the thread and the finished net are wound onto the roll k ^1. The axis of the roller k is mounted at Ic ² (Fig. 3) in brackets on the frame a ¹ , while the axis of the roller k ¹ rests in guides k ³ , which are provided in an upward extension of said bracket. This axis extends so far through the guides that a lever k * on either side of the machine is able to grasp the axis of the roll Ic ¹ and lift it out of the guides in order to remove the roll when it is full. Instead of the procedure shown here of removing the finished network, any other known method can be used.

A row of needles i, the number of which corresponds to the number of warp threads, is carried by a bar i ¹ which extends from one frame a ¹ to the other and is attached at each end to a piece f ² , which extends both in the longitudinal direction of the Rail is freely movable as perpendicular to it in the horizontal plane, whereby it is guided through slots in the frame a ¹ (Fig. 3). The movement at right angles to the longitudinal direction of the rail is derived from the thumb z ' ³ on the shaft c ¹ (Fig. 3), which act on the levers 2 ⁴ , which in turn are rotatably attached to the frame a ¹ at P; the

Return takes place through the springs z ⁶ . The movement in the longitudinal direction of the splint goes on a thumb i ⁷ . on the cross shaft / back, which is driven by a bevel gear on shaft c (Fig. I and 2 right); this thumb acts on one end of a lever z ⁸ , which swings on the transverse shaft Z ¹ , and the other end of which is connected to the rail z ¹ by the piece i ' ² . The backward movement of the rail takes place by means of the spring j attached to it and the frame α (left in the same figures).

Opposite the row of needles i in a slightly higher level there is just such a row of pins m, which are attached to a rail m ^l , which makes a movement similar to that of the rail i ¹ , but at a slightly different pace than immediately should be dealt with. This movement is based on a device which ^{is similar to that described when considering the rail z '1} , as can be seen from the consideration of FIGS. 1, 2 and 3 without further description.

Above the needles i and the pins m are two combs n which are carried by the frames α ^λ α ² by means of the pieces n ¹ . These combs are similar to those used on lace machines; they form paths for matching bobbin carriages 0, which are similar to the lace machine bobbin carriages and which carry the weft threads. The moving ^{rails o l} for the reel carriages, which hold all the reel carriages in order to drive them through the chain, are carried by levers o ² , which are operated by a system of levers o ³ o ⁴ o ⁵ , of which o ^{5 are} on the shaft o ^x sits, and other levers o ^{6 are} carried, which have their pivot point in the frame α . The levers on the front of the machine are moved by thumb o ⁷ on shaft c ¹ , and those on the back by thumb o ⁸ on shaft c ¹ .

The frames a ¹ have vertical guides p ' ² (Fig. 3) in which two sliders are attached. The lower of them forms a bearing for the end of a rail q ¹ (Fig. 5), which carries a number of fingers q , the number corresponding to the needles i. This rail is connected to a guided rod q ' ² and receives a vertical up and down movement by members q ^x (Fig. 4), which are connected to the levers q ³ , which in turn have their pivot point on the frame a ^l and be moved by thumb q * on shaft c ⁸ .

The upper slide is with a rail ^? ¹ connected, namely by links p ³ and lever p ^x , which rotate around points on the frame-r men α ¹ and are moved by thumb j> ⁵ on the shaft c ³ . The rail p ¹ is thus moved up and down. She wears a number of fingers p, the number of which corresponds to the number of needles i.

The extreme positions of the rail p ¹ are drawn in full and dotted lines in FIG. 5; just above the row of fingers, when the rail j>'is at its highest position, there is a rail r which guides the net.

In a plane immediately below the row of fingers ρ there is a row of fingers s (FIG. 5), the number of which also corresponds to the number of needles i. These fingers are carried by a rail s ¹ which is suspended from the shaft s ³ with rods s ^2. This shaft is set in motion by links and lever arms s ^x (FIG. 6) by virtue of the levers s ⁴ , which rotate in points s ⁵ on the frame a ¹ and are moved on the shaft c by thumb s ^e . In the direction of its axis, this shaft s ^{1 is moved} by a lever t centered in a bracket t ¹ , the upper end of which ends in a fork and grasps the shaft s ^{3 behind a collar.} The lower end of the lever t , however, is ^{coupled by the links i 2} t ³ (see FIG. 1) to the upper end of a lever if ⁴ , which rotates on the shaft Z ¹ (Fig. Ι right) and its lower end is moved by a thumb disk i ⁵ (Fig. 2 right) on the shaft /. This thumb disk is ^{forced to follow by a spring i 6} - on the rod s ³ (Fig. 1).

Now that the main parts of the machine have been described, there is no need to explain how they work together to form the knot. It should be said in advance that the weft threads are guided from the bobbin carriage between the fingers s behind the rail r and over the roller k , where they are held together with the warp threads.

The following can be seen from the schematic figures (FIGS. 7 to 14). The needle bar z 'first moves in its longitudinal direction either to the right or to the left in order to bring the warp threads across the path of the fingers q and ρ , which path is common to both rows when the rails q ^l or p ^l go down. The position of the parts is then drawn as in FIG.

The rail q ¹ now goes down and pulls the thread into an open loop while it guides the fingers, which are slightly bent downwards, between the needles, whereupon the needles and fingers assume the position shown in FIG. 8 with respect to one another. Simultaneously or immediately thereafter, the rail ρ ^λ goes down, and the fingers p, the

Claims (3)

are curved upward, also pass between the needles i and the position of the parts with respect to one another is that shown in FIG. Now the rail z1 returns to its original position to bring the needles across the tracks of the fingers ρ, whereupon the rail p1 goes up. The position is now that shown in FIG. 10 and the thread has been drawn out into a second open loop. The splint i1 now moves at right angles to its longitudinal direction in order to bring the needles i through the plane of movement of the fingers ρ and q between these fingers and thus to close the loop. The position of the parts with respect to one another is now as shown in FIG. 11. After the rail / 2 has been pulled down to cause the weights e2 to tension the threads, the next movement is the passage of the shuttle through the loop shown in FIG. This movement of the shuttle is associated with a forward swinging of the rail s1, which has the purpose of giving the weft threads a guide by means of the fingers s; at the same time the rail m1 moves at right angles to its longitudinal direction and brings the pins m alongside the warp threads, so that the position shown in FIG. 13 occurs. When the shuttles have passed through the loops, and before they return, the bar sl goes back to the initial position and the bar m1 moves in its longitudinal direction to the left or right, depending on what is required, whereby the chain thread as far after the the other side of the loop is pushed back so that the weft thread wraps around the warp threads when the shuttle goes back through the loops. The rails ml and i1 return to their original positions and the rail fx goes down to allow the sutures to be tensioned by the weights. Finally, the rail q1 goes up and is immediately turned a little in its bearings, whereby the threads from the. Slip your fingers q and the knots are drawn tight around the finger by virtue of the tension exerted by the weights e1 and e2. Immediately after this is done, the swinging bar s1 is swung forward alongside the warp threads to facilitate the task of bringing the warp threads into position for the next series of movements. The splint remains in this position only until the knots have been removed from the fingers ρ; it goes back as soon as the needles i1 have made their movement to the right or left, so that the plane of movement of the rails p1 and q1 and the fingers ρ and q remain free for the following movements. 14 shows the last process in tying the knot. After these individual processes have taken place, the roller k is rotated through the necessary angle in order to pull the knots off the fingers ρ and to complete the knotting process; at the same time the net is wound onto the roll k1. Godfather NT-A ν Proverbs: 1. Netting machine with two rows of threads, one of which is moved back and forth from the weft thread row withdrawn from shuttle bobbins by the loops formed from the other thread row, the chain threads, characterized in that each chain thread of two pins (q and p) in opposite directions Directions first pulled out to two open loops and by moving the guide needles (i) the chain threads are laid perpendicular to the direction of movement of the two pins to form a closed loop, whereupon, after the bobbin carriage has been passed through the chain thread loop, each chain thread is shifted to the side with a finger (m) takes place, according to which the bobbin carriage, when it passes back through the loop in the same plane, loops around the chain thread and thus forms the knot. 2. Net knitting machine according to claim 1, characterized in that after formation of the loop every chain thread is put under tension by a weight, and that after the knot has been formed the The knot is tightened by an additional weight. 3. Net knotting machine according to claim 1, characterized in that all nodes are knotted on the same row of pins (p) and pulled off this row of pins by a roller (Ic). For this purpose 2 sheets of drawings.