DE460068C - Device for shedding in mechanical looms - Google Patents

Description

Device for shedding in mechanical looms. With mechanical Looms are known to have a common drive for shedding and pattern formation (for example through the loom crankshaft). The one in that direction known drives are the modern demands of the fast running mechanical looms don't do it justice. On the other hand, the older devices Special facilities are required to remove the cards from the stool boards during of turning to remove. The turning starts much too early, while it is only may take place when the compartment is almost closed. In another case it will be the footrest plates are moved by eccentrics, with half an eccentric rotation for it is necessary to lift the sinkers; at the beginning of the decline of the eccentric the sinkers are also lowered immediately without the stool sinkers being supported will.

The new device also uses a common drive for Subject and pattern formation in a manner adapted to the high number of tours, in such a way that from the gotiten crank drive for the shedding linkage with the help of a specially mounted rocker arm derives the drive for a second linkage which acts on the pattern device.

The linkage driven by the crank for the shedding is with regard to the dead center position against the crank linkage for the means for selecting the shafts, Sinkers o. The like. Offset in such a way that after the beginning. that of the crank on the shedding linkage transferred movement only the dead center position of the drive means for the second linkage he follows. In this way it becomes clear that, for example, when using the jacquard machine with the formation of a new compartment of the cylinder the needles in the read Location for a while.

The following figures serve to explain the invention in more detail.

Figs. I to 3 show an embodiment when used on the jacquard machine.

Figs. I and 2 are front views, with Fig. I showing the position with the compartment open and Fig. 2 with the compartment closed.

This includes Fig.3 as a top view in relation to Fig. I.

Figs. 4 and 5 relate to a version in use on the Crompton dobby with roll card device.

Fig. 4. is a rear view. Fig. 5 is a side view.

Figs. 6 and 7 show a version when used on the Crompton dobby with cardboard device.

Fig. 6 is a rear view. Fig. 7 is a side view.

For the sake of clarity, only those parts of the chair are shown in all illustrations represented by dashed lines, which are useful for understanding the invention required are. As for the execution according to Figs. I to 3, the following is to be said.

The chair frame is denoted by i. In the chair frame is .the Crankshaft 2 is supported on which the drive wheel 3 is attached. This drive wheel carries the crank pin .i on which the crank rod 5 is rotatably seated. These The crank handle engages the lever by means of the hinge pin 6; at who on the wave 8 is attached, which is rotatably mounted in. The bearings 81 and 8 =. With the lever ; the double arm lever 9 is firmly connected. The bolts are attached to this lever io and i i .the tie rods 12 and i aasgeelte, which i11 known way with the The bottom plate and the knife basket linkage are connected. So it is through the rotation of the crankshaft 2 causes the double arm lever 9 to oscillate back and forth.

In the end position of the lever 9 according to Fig. I, the tie rods have 12 and 13 causes the opening of the compartment, while in the end position of the Doppelarnihebels according to Fig. 2 the compartment was closed with the aid of these rods. Accordingly the crank pin takes its lowest in the position according to Fig. i and in the position its uppermost position according to Fig.2.

According to the invention, a double arm lever is now on the frame bolt 14 15 rotatably mounted. At 16, the Zylin.derwandzugstange engages at one end of this lever 17 of the jacquard machine articulated. At the other end .des double arm lever 15 engages at 18 the handlebar i9, the other end of which is rotatable on the crank pin 4 is antiged.

In this way, the drive of the jacquard machine is direct derived from the impetus for the means of specialist training. Finds a readjustment (with regard to advantages or lag) with regard to the one gear instead of by the crank pin 4 is adjusted in its slot 41, so it is also at the same time the other gear is automatically regulated in exactly the same ratio.

The pivot pin 18 is now moved so that in the highest position of the crank pin 4. (see Fig. 2) its center point with that of the bolt 18 lies approximately in a straight line which goes through the center of the crankshaft 2. In this position the jacquard machine is closed and the cylinder must Select the needles using the sample card that will be used to form the new one Subject come into question. When the new subject re-emerges, the cylinder must die As is well known, hold needles in the read position for a while. That’s through the aforementioned arrangement of the pivot pin 14 is taken into account, namely when rotating of the drive wheel 3 carrying the crank pin 4 in the direction of that shown in FIG Arrow, the center of the crank pin only passes the dead center position when the center of the crank pin in the straight line indicated by dash-dotted lines has arrived which goes through the bolt 18 and the center of the crankshaft 2. That implies that the rods 12 and 13 move up and down again for the purpose of shedding, while the cylinder remains at the needle step for a certain time and accordingly Holds the needles in the read position for safe jaquard machine operation to enable.

In the lowest position of the crank pin ¢ according to Fig. I, a straight line passing through the center point of the crankshaft can be laid through the center points of the bolts 6 and I. This is: it is the position where the compartment is open, i.e. where the shooter is driven through the compartment. In this position, the cylinder movement of the jacquard machine does not need to stand still, but in this position the cylinder is turned forwards in a known manner by the turning hook.

With regard to Figs. 4 and 5, the following should be said. On the crankshaft: 2 the crank disk 2o is seated, which carries the crank pin, which here is again adjustable in a slot 41. The crank pin carries the known articulated piece 21 (see Fig. ¢) with the pull rod 22. This pull rod is articulated by means of the bolt 23 with the knife crank 24 are omitted in the drawing), I moved to bring about the opening of the stool 25 ..

According to the invention, the link 26, which is articulated to the rocker arm 28 at 27, is also connected to the crank pin 4. This rocker arm is carried by the frame pin 29. The tie rod 3o, from which the dobby is operated, is still fastened with one eye on the bolt 27. This pull rod engages the articulated lever 32 at 31. The articulated lever 132 and the reversible lever 135 are attached to the reversing shaft 33, which is rotatably mounted in the adhesive machine walls 34. The turning lever is connected in a known manner to the turning fork 36, the turning hook 37, the cylinder shaft 38 and the lantern 39. The cylinder shaft carries the roll card, which works in a known manner with the Schemelpla.tinen, 1o.

Here, too, the crank is used to drive the Means for shedding is used, the drive for the dobby is derived directly. Here, too, the compartment is open in the lowest position of the crank pin .1, whereby but with the dobby closed - i.e. in the uppermost position of the crank pin .l, 3er Xartenzylinder is turned with its roll card.

In the execution according to Fig. 6 and; If the cylinder of the dobby is not turned by the turning device, but here the known stool sinkers are moved by a special device because the cardboard cards are not strong enough. to lift the relatively heavy stool plates 4.o immediately. Here the articulated lever 32 is rotatably arranged on the bolster pin .lz and is connected to the knife lever .1z, knife .43 on the frame pin 4 4. by means of the pull rod 4 5, so that the knife ¢ 3 swings out exactly as in the case of the one described above. Setup according to Figs. 4 and 5.

On the rack bolt. 4.6 are the plate levers 4 .; with the boards .l $ arranged, which raise the stool sinkers, l0 as soon as the knife is in the direction of the arrow drawn in. Fig.6 is moved and through the cardboard cards with their Needles. are known to have been associated with these knives.

Here, the movement already described becomes due to the upward and downward movement Pull rod 22 by a known linkage of the cylinder through the shaft knife movement put into action.

The in Figs. 6 and; The position of the crank pin shown corresponds to 4. the position with the compartment open. Here, too, the common drive is the means used for shedding with the means for pattern formation.

Here, too, the frame bolt 29 is moved so that when closed Dobby position: g the cylinder is turned at the right time and continue to move the knife .43 so that it is in its lowest position remains in place for a long time in order to avoid shaft defects.

Claims (1)

PATENT APPLICATION: cHL: i. Device for shedding in mechanical looms, in which a common drive for shedding and pattern formation takes place from the loom crankshaft, characterized in that the drive for a second rod is derived from the known crank drive for the shedding rod with the help of a specially mounted rocker arm, which is on the pattern device acts. _. Device according to claim i, characterized in that the shedding linkage (5 to 13) driven by the crank is offset from the crank rod (i4. 5 to 13j transferred movement only the dead center of the drive means for the second linkage (14 to ig) occurs.