DE46841C - Electrical storage device for mechanical looms - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

, CLASS 86: weaving.

Patented in the German Empire by ig. June 1888.

The invention relates to an electrical parking device for mechanical looms of various types, in which a shuttle turns the weft back and forth between the warp threads moved here; but this device is particularly suitable for looms with several shuttle gates, such as B. for ribbon and belt weaving and for the production of narrow fabrics.

The purpose of the device is to automatically stop the loom, either as soon as the Weft thread in one of the shooters has almost run out or breaks, or if one or tear several warp threads.

When operating such looms with several shuttle gates, the attention of the Webers tense to the utmost in order to keep all the gun coils filled and at the same time also to watch the warp and the weave properly. Despite the greatest vigilance it often happens that one or more bobbins run idle or a chain thread is torn is, after which the whole chair must be put down until the chain or warp thread reattached resp. a new bobbin is attached. It doesn't just create it Loss of time, but also yarn waste and defects in the fabric.

The present parking device consists of one in action by an electromagnet set disengagement for the loom drive belt; the electromagnet is automatically excited by the shooter generated electric circuit as soon as a weft ripens or is missing, or almost has leaked, or if a chain thread breaks.

In the drawing, FIG. 1 shows the parts of a ribbon loom belonging to the clarification of the invention in a side view; Fig. Ι a shows the drawer with the electromagnet and its armature. Fig. 2 shows in a top view one end of the sash together with a part of the loom frame, from which the connection of the sash with the storage bar or belt disengagement can be seen. Fig. 3 is a front view of the loom with the upper part omitted; Fig. 4 is a top view of the drawer with riflemen in the punctured working position; Figure 5 is a rear view of the drawer with the electrical connection to the shooters. Fig. 6 shows in plan and in the end view a shuttle for ribbon weaving with a metal spool, with which contact is made when the weft thread has almost run out. Fig. 7 shows in plan and in the rear view a similar shooter with a wooden reel on which wire is wound. Fig. 8 is a rear view of a shooter with a wire device which shuts off the stream when a chain thread breaks. Figures 9 and 10 are side and longitudinal sections of a metal coil. Fig. 11 shows the mutual position of the rifle, the reed, the chain and the rearing. Fig. 12 shows the organs belonging to the invention in their context, independent of the other parts of the loom. _:

The frame of the ribbon loom consists here, as usual, of the side walls aa ¹ , which are connected by longitudinal beams bb . The upwardly extended side walls carry at the upper end the articulated rods c c ¹ , the lower end of which is attached to the drawer d; this drawer swings back and forth through the crank e ¹ sitting on the shaft f and the connecting rod e.

In the loom indicated by the drawing, for example, a plurality of shooters A are used, which are guided in the path g of the drawer. These parts are all known.

The shooter A, FIGS. 6 and 7, has a cutout in the middle into which the firing coil h is inserted; the same is ^{rotatable on its axilla 1} , and the weft thread is dispensed under the required tension, which is established by the resilient tongues i . The end of these tongues or tension wires i , wound around a pivot, is fixed in the body of the shooter, the other free end lies with elastic pressure on the circumference of the bobbin and approaches the core of the same, the more the thread is dispensed and the bobbin becomes thinner . This core or middle part of the coil consists either entirely of metal, Fig. 6, or of wood with a metal covering, Fig. 7.

In the back of the shooter metal plates kk ^l are embedded, which cut off in a plane with the shooter surface; these plates protrude into the shooter with a pin or screw. In Fig. 6, one of these pins touches the wire i, the other touches the coil axis h ¹ . As long as the weft thread of the bobbin covers the metallic core of the same, the tongue i has no contact with the latter; However, as soon as the thread has been released so far that the core is no longer covered, Fig. 6, a metallically conductive connection is established by applying the wire i to the core, which through the metal coil h and its axis h ¹ to the other metal plate k ^J leads, manufactured.

When using a wooden reel, FIG. 7, the electrical circuit can be established by using two metal tongues i , each of which is conductively connected to one of the metal plates kk ^1; the wooden core of the coil h is either wound with fine metal wire or covered with a metal sleeve. As soon as the thread has been released so far that both tongues i press on the metal, the conductive connection between them and the two plates k and k ^{1 is} established.

At one end of the loading d an electromagnet C is attached, which is included in the circuit of a battery -D set up at a suitable point, whose lead wires y at the same time include the contact device m η , Fig. J 2. The latter ordered ■ from a rotatable rod m at the back of the drawer; on this rod there are a number of fingers η , arranged in pairs, FIGS. 4, 5 and 12; one finger of each pair is connected to the positive, the other to the negative pole of the battery. The free ends of the fingers or wires η are bent over towards the ark and enter it; at the given time they then lay against the metal plates kk ^{1 of} the 'shooters A for a moment, as long as the latter are not in motion. For this purpose, a periodic rotation of the rod m is brought about by an arm 0 which descends from one end of the rod and which strikes a stop o ¹ attached to the machine frame when the drawer swings against the goods tree.

Since the shooters slide back and forth in their path, their metal plates kk ¹ come into brief contact with their fingers η each time they return. As long as there is no metallically conductive connection between the plates kk ^{1 of} the contactor, there is also no electrical circuit when the fingers η η are touched. If, however, the weft thread of a coil is released so that the resilient tongue or tongues i get in contact with the coil and a conductive connection is established between the plates kk ¹ , the contact of the metal fingers η and plates kk ^{1 of} the protector closes the battery current and the electromagnet C immediately attracts its armature ρ . The latter is rotatably attached to the drawer about a pin and is usually ^{held in contact with the magnet by a spring jj 1} , Figs. 2 and 12. The front end of the anchor ρ is hook-shaped and usually slides on one when the drawer hits Arm of the angle lever H over, which is rotatably attached to the machine frame. The other arm of this lever H is connected to the release rod K in the joint; this rod is stored in suitable guides on the front of the loom and easily accessible to the weaver, as is customary. The other end of this release rod K is connected to the parking fork u in such a way that the displacement of the rod K in its guides pushes the drive belt from the drive pulley onto the loose pulley of the shaft f. As long as the armature ρ is withdrawn by the spring p ¹ , as in FIG. 12, the hook cannot engage the lever arm H; However, this is established immediately as soon as the weft thread runs out, the contact η η kk ^l and current circuit established and the armature attached by the electromagnet.

Claims (1)

is pulled. When the drawer falls, the angle lever H, grasped by the armature ρ , then swings around its pivot and pulls the rod K , causing the belt to be disengaged and. the movement of the loom is stopped. It can be seen that this shutdown takes place before the thread is completely has run off the bobbin, so that the tissue remains in the best order and a new one Coil can be inserted into the shooter without adding or impacting the tissue to assign something to the latter. have to. The shutdown in the event of a chain thread breaking is effected in the following way: At the rear of the gate there is an arched wire w , one end of which has an eyelet around the pin of one plate k or k ¹ , while the other end protrudes slightly over the surface of the gate and forms a spring coil \ of which two branch off over lying bends ^ ¹ , each of which can be engaged with the pin protruding from the shooter, Fig. 8. In this figure, the wire is shown in its normal position; the plates kk ¹ have no connection to one another. If the wire w is now pulled down from a torn or tangled chain thread, as described later, the spiral % comes into contact with the contact plate k and is held in this position by the upper bend ^ ¹ . As soon as the fingers η η touch the same, the conductive connection between the two plates kk ¹ causes the electric circuit, and the attraction of the armature ρ by the electromagnet and the release rod K is attracted to shut down the loom, as previously described. The operation of this device can be seen from Fig. 11, in which a warp thread is shown as torn and entangled with the other threads. This entanglement increases as the harness goes up and down, until the tension of the torn thread depresses the wire tv as it passes through the guard and the electrical circuit is closed by contact with the fingers η η . It remains to be described how the shutdown takes place when the weft .drains, as it often happens. The following facility has been set up for this purpose: L JL ¹ , Fig. 7, are flexible wire spirals, as they are often used to tension the slack weft thread. When there is no thread on the bobbin, these springs retract into their hole in the shuttle so that only the rings / / at the front end of the spirals are visible. The inner ends of the spirals are conductively connected to the contact plates kk ¹ by wires qq, and the mouths I ¹ of the holes containing the springs L JL ¹ are metal-enclosed and conductively connected to one another, e.g. B. by a metal strip Z ² . If the thread breaks, the springs " LL ¹ " snap back and the rings II lie firmly against the metal eyelets I ¹ ; the conductive connection between the contact plates kk ¹ is thus established. As long as the thread runs normally from the bobbin , its tension pulls the rings 11 towards each other and away from the muzzle eyelets I ¹ , as can be seen from Fig. 7. The thread goes from the bobbin h first through a glass ring, then through both rings / / and only then runs out of the shooter as indicated in dotted lines in Fig. 7. Pa ten τ - An s ρ au.CH: An electric shut-off device for looms, which comes into effect automatically as soon as the weft thread in one of the shooters has almost run out or broken off, or if a warp thread is torn, and which consists in the fact that one is in the circuit of an electric battery at the same time on each return a contactor with the same coming into contact contact device (mn) and also an electromagnet attached to the drawer is included, the armature of which is attracted and then moves the release rod (K) when the shop hits and stops the chair as soon as the electromagnet is excited by an electric circuit, which the latter is effected by, that on the firing itself either by the end of the weft from the bobbin, or by breakage of the weft, or by pressure of the torn or intricate chain thread, a metallically conductive connection between the two, by the pole fingers (nn) of the contact device touched points (kk ^l ) is produced. - In addition 3 sheets of drawings.