DE145562C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

By the patent 96513 looms are known in which the The expired bobbin in the shooter is replaced by a fresh bobbin without it being necessary

.5 is to stop the loom with the shuttle with a self-threading device is provided.

With such looms the one from the fresh shuttle to the yarn store or feeder leading thread at the first snap of the shuttle after changing the bobbin into an elongated open thread channel which forms part of the threading device forms, enter under a horn at the outer end of the canal. When the shooter snaps back, the thread is then turned into you by the horn Slit in and down to the fade eye on the side of the shooter, a device being made to prevent the thread from flying out of the channel impede. But if the thread misses the first time the shooter snaps into the Channel so that it is withdrawn over the top of the coil in the shooter, so when the shooter snaps back, the direction of the action exerted on the thread Turn the other way around. The thread is withdrawn from the head end of the bobbin and will break, leaving a fresh bobbin in the Protection must be used, which is associated with loss of time and other disadvantages is. These disadvantages are avoided by the subject matter of the present invention. As a result of this is namely in the time of the bobbin exchange between the weft of the fresh bobbin and the The shooter's thread unwinding device before the shooter leaves the shooter box is quickened, an immediate interaction causes the thread of the fresh bobbin at the right moment the shooter movement after the shooter has been replaced brought to run by the shooter in a proper manner will. This facility is described in more detail below.

Fig. Ι and 2 are cross sections through part of the loom, different positions of the working parts illustrative. Fig. 3 is a top plan view of the yarn run-off end of protection. Fig. 4 is a longitudinal section taken on line 4-4 of Fig. 3. Fig. 5 and 6 are cross sections in the line 5-5 of Fig. 3 with respectively closed. open Thread passage. Fig. 7 is a detail. Figure 8 is a perspective of the thread run-off end of protection.

In Fig. 1 and 2, the drawer A ³ slotted at 10, the contactor box B ^x , the stop C ² and yarn storage F are from a known device, the latter being rotatably tapped on pin α on the stand A ⁷ attached to the chest tree A ⁱ⁰ . As is known, the weft ends coming from the ends of the bobbins on the yarn store F are held at their extreme ends, and the garril store brings in a spool as it rotates

Claims (2)

Position to be inserted into the shooter by the feeder f ^l, in that the feeder engages the head of the spool while the tip of the same is gripped by the downwardly directed fork piece 22 attached to the feeder f ^{l on the arm 21.} The replacement of the old spool for a new one is done in a known manner by rotating a shaft d ^l in the direction of arrow 65 (Fig. 1), creating a pawl m ¹⁵ , which on the pin m ¹² on the downward part / ^{3 of} the feeder aufgezapft is rotatable, is swung into the path of the stop C ^2, as shown in FIG. 2 can be seen, in which position a new coil b -and brought into the shooter elapsed coil has been removed by the slot 10. The shooter S has an opening s ^] (Fig. 3) for receiving the bobbin b, which is held at its head end in the shooter, so that the free end of the new bobbin is held next to the run-off end of the thread in the shooter. At this end of the drain, the shooter is provided with a drain device consisting of a molded piece 80 (FIG. 7) which ^{sits with a pin 81 in the bore s 2 of} the shooter (FIG. 4). The downwardly tapering side walls 83, 84 of this shaped piece 80 have. Bulges 83 *, 84 *, under which the thread lead-through 82 is formed (Fig. 5- and 6). 85 and 86 are vertical slots in the side walls (Fig. 7); on both sides of the slot 86 in the side wall 84 tabs 87 are formed in which a bolt 91 is mounted on pin 90, which usually rests on a pin 89 (FIG. 5). Under this bolt, a piece of felt 88 is inserted in a countersink (FIG. 7) of the shaped piece 80, which tensions the thread of the weft yarn while it passes between the piece of felt and the bolt 91. Sitting on the shooting wall, connected to it by a rivet 95 (Fig. 8), is one with a slot 96 provided spring 97 (FIGS. 3 and 4), the upper part of which in a finger 93 runs out, the tip of which is bent inwards and into a slot 92 of the bolt 91 engages (Fig. 4 and 6). The usual position of the resilient upper part 98 of the Spring plate 97 shows' Fig. 5, in which the bolt 91 is in the rest position. When a coil is inserted, i.e. when the feeder f ^l goes down (FIG. 2), the upper part 98 of the spring is pressed outward by the stop 75 attached to the fork piece 22, so that it moves into the position shown in FIG. 6 is the position shown. The pawl 91 is thereby swung upward by the finger 93, whereby it enters an intermediate space 840 (FIG. 8) provided on the shooter body S , and the end of the weft yarn of the new bobbin enters the thread guide 82. If the stop 75 is then taken up again and the spring 97 is released, the same will spring back into the position shown in FIG. 5 and the latch 91 will press the thread against the piece of felt 88 before the shooter has snapped. At the beginning of the shooter's first shot, the thread of the newly inserted bobbin, the end of which is still held on part of the feeder, only passes through the guide 82 at the same height as the axis of the bobbin. Even during this first shot, the thread usually passes through the passage 102 (FIGS. S and 6), which is formed between the horn-like projections 99 and 100 of the molded piece 80, in such a way that the projection 99 projects beyond the projection 100, so that the passage is not perpendicular, preventing the re-exit of the thread (Figures 3, 5 and 6). In the second shot, the thread, when it has entered this passage 102 during the first shot, is drawn around the end 106 of the horn 103, which is also formed on the fitting 80 (FIG. 7) and passes through the drain formed between the pin 105 and the horn end 106 eye s * in the leadership s ^h . If the thread does not get into the sequence guide s ⁵ either, the operation of the loom is neither interrupted nor stopped, because the thread then slides over the bolt 91 with the same ease as through the sequence guide s ^r> . A screw s ⁶ (Fig. 4) holds the fitting 80 in position, and a pin 104 is used to keep the thread level with the run-off end of the bobbin. - If the shooter suddenly stops at the end of a shot, the thread between the bobbin and bolt 91 is thrown forward in a loop. This loop cannot cause a thread break here, as is often the case with other designs, because it will simply lie over the bolt or, if it is longer, which very rarely happens, it will be placed on horn 99, which protrudes beyond the passage 102, so that the noose cannot enter it. The sling is then pulled out again during the next stroke. Patent-A ν Proverbs: I. Device for preventing thread breakage for looms with automatic Weft spool replacement, characterized in that when a full spool is fed in, one in the shooter ordered holding device (91) guiding the running thread triggered and is moved back to the original position before the shuttle is released, so that it is the The thread of the fed bobbin is detected in order to prevent the thread from being drawn from the discharge end to secure the coil. 2. Device according to claim 1, characterized in that the shooter a rotatably mounted bolt (91) is provided which transversely across the inner The end of an elongated thread channel (82) lies in the shooter and automatically when the fresh bobbin enters the shooter is raised in order to let the thread withdrawn from the same enter the channel, whereupon the latch is immediately lowered again to hold the thread in the channel, so that the same is pulled under the bolt will. 1 sheet of drawings.