DE26125C - Device for changing shuttle for mechanical looms - Google Patents

Description

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IMPERIAL

PATENT OFFICE.

CLASS 86: Weaving.

In the specification and claim of patent no. 19689 set out how the contactor box movement takes place with the aid of the box lifter, which with its gearing engages in the teeth, thumb, etc. on the box girder. An arm sits on the box lifter a double pulley, around which a chain is wrapped, each end of which goes through Roller lever with a. Zugexcenter is connected, while Gegenexcenter with roller lever and spring counteracts the load of the contactor boxes and so at the same time the Zugexcenter relieved.

This arrangement proves to be extremely useful, but it becomes cumbersome and complicated for a larger number of shooters to change. A so-called switch lever B is therefore attached to the box lifter A for such multiple changes. Fig. 1 shows the same. This switch lever is moved by a third eccentric for each side of the chair, so that the two in PR No. In 19689, one more stroke eccentric is added and a third d is attached to transport the movements from the drive side of the chair to the other via the eccentric shafts cc ¹ , FIGS. 1, 2 and 4.

The shift lever B is connected to the third eccentric by pull rod G and pull member G ^]. It swings around the pin e attached to the arm E of the box girder A. The double pulley D is used on its extension pointing downwards, the chain ends of which are connected to the tension eccentrics as before. This train pushes one lateral extension / against the contact nose lam arm E, while the other lateral extension v, provided with a support plate F , is covered by the chain or rod link G ¹ and placed in a position corresponding to the train and pressure, ie However, there is a fixed limit through a nose y on the arm E. The switching lever B now makes all the movements of the box lifter A up to the fourth box, only then does it come into effect. When lifting the eighth box, the lowest last tooth of the tooth segment on box lifter A, Fig. 1, must come into effect, and the arm / switch lever is pulled by the associated eccentric to the pivot point of box lifter A and lies there against the Nose y on. This position is shown in Fig. 5 (at the same time, however, the replacement of the double pulley and the chain by a toothed wheel and toothed loop is incidentally made). In order to reach the position for the eighth box or for another of the boxes above 4, the double pulling role has to decrease accordingly or, if it goes down from 8, to tighten it to lower numbers. For the support of the link G ^: the tie rod G on F, it should be noted that one of the two bolts of the same always falls into the pivot point of the box lifter A. The tension member G ¹ moving the shift lever must be of the same length as the movement of the shift lever on the bolt / is. While the lugs χ y limit the movements of the switching lever, the lug χ also serves to ensure that the box lifter A follows the movements of the switching lever when these are caused by the double pulley D.

Claims (1)

Fig. 8 shows the use of the box lifter A with switching lever B for a large number of changes (18-fold). The system is the same, only because of the necessity that the 18 contactor boxes are set up in the form of a revolver and the toothed rack is replaced by a link chain Z guided in a groove / which encompasses the revolver box and rotates when the box lifter A pulls. A rope arrangement J ³¹ and spring P exert the counter-pull here. To adjust the box in the most precise way, the lever Hh is attached, which engages in the wedge-shaped lugs Hh ι, of which one is attached for each box. The movement of Hh is conveyed by the push rod Hh 4 by means of the swing arm Hh 3 and the pull rod Hh 5 from the eccentric lever Hh 2. The eccentric is adjusted accordingly on the main crank axis. In Fig. 3 the box lifter A is shown in such a way that the movement is transmitted from it to the turret by chain or wheels. The return movement by means of a spring tension occurs as in FIG. 8. The double tension roller D is guided on a slide Dz in the support D 3. The rack on the carriage D 2 transfers the movement by means of wheel Ai to the box lifter A. The double pull rollers DeDe can also be guided in the support, like the double pull roller D ₁ and this can also be pulled by means of racks on both sides instead of chains. Each of the trains abcd is connected to the lever of a three-part two-stroke eccentric. If one gives α twice one part, that is two parts of movement, so much to lift the second and third from the first box, which needs no movement; further b twice 3 parts, thus 6 parts movement; then c twice 10 parts, i.e. 20 parts movement, and d twice 30 parts, i.e. 60 parts movement, one can change at will with 89 contactor boxes. The addition of a gear lever then doubles that number of boxes. The importance of the double pull rollers, the two-part two-stroke eccentric and the gear lever comes to the fore most extensively in this construction. All these variations in construction for changing shooters with switching lever can be used for both sides of the chair. The more the number of boxes grows and the change in movement increases, the greater the safety of these facilities of the individual movements. There are therefore facilities provided, soft Enter securely and trigger the pulling movement in the event of greater resistance. In Figs. 6 and 7 safety devices are shown for releasing the pulling movement if the resistance is greater than normal due to some disturbance in the movement of the contactor boxes. (Attention is drawn to the fact that these devices can also be used to drive shooters). The lateral spring tension of the two lever members kk and the steepness of the surfaces ii together prevent sliding into the position k 1 as long as the resistance encountered by the pull rod h is normal. In Fig. 7 the same device, designed as a pull rod, is shown. Eccentric and lever m, Fig. 6, are used to move the knife for the shooter change on chairs with propulsion on the right chair wall. In PR No. 19689 it is lever e or pull rod e ¹ , which can be provided with such a device. Godfather ν τ claim: A device for shuttle change on mechanical looms, in which the number of positions of the box lifter A, which is determined by the means of patent no. 19689 protected device can be achieved, by adding a further position, that the pull roller D is connected by a turning piece B with the arm E of the box lifter A , and that the pieces B and E by means of a tie rod G and link G ₁ transferred train from the position shown in Fig. 1 in the position of FIG. 5 can arrive. For this purpose I sheet drawings.