US1416344A - Circular weaving machine - Google Patents

Description

C. J. FEUERSTEIN.

CIRCULAR WEAVING MACHINE.' APPLICATION man MAY 26, 1920.

Patented May16,1922.

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APPLICATION FILED MAY 26. 1920.

Patented. May 16,1922.

2 SHEET$SHEET 2.

CORNELIS JACGBUS FEUERSTEIN, 0F ZWQLLE, NETHERLANDS.

CIRCULAR YVEAVING- :MZEGHENE.

Specification of Letters Patent.

Patented May 16, 1%22.

Application filed May 26, 1920. Serial No. 384,488.

To all whom it may concern:

Be it known that l, ConNnLIs dscoe'cs FnUnnsTmN, gentleman, a subject of the Queen of the Netherlands, residing at" Zwolle, in the Province of Overijsel, in the Kingdom of the Netherlands,,have invented certain new and useful Improvements Relating to Circular lVeaving Machines, of which the following is a specification.

This invention relates to circular weaving machines of the type, in which the shut tle is moved by means of an electromagnet drawing rod, the excitation of the electro-' magnet controlling the clutch being dependent on the pattern to be woven.

By my improved mechanism the most intricate patterns may be woven into fabrics in a very simple manner.

According to the invention, each of said drawing rods is provided with a lug which cooperates with the corresponding heddles. Said lug being adapted to engage either a fixed lug on the heddle or the nose of a lever which is pivotally connected to the heddle. Said lever in one of the two extreme positions of the heddle being in position to be attracted by its corresponding electromagnet and the lever being so shaped and having such freedom of movement with respect to the frame guiding the heddles, that when the electromagnct is not excited said lever lies beyond the path of said drawing rod lug. YVhen the lever is excited by the electromagnet or when it is out of the position in which it is not in the path of the drawing rod lug, then its nose is in position to be engaged by the drawing rod lug. Each of the levers is provided with a slot through which a pin passes for securing the lever to the heddle, and by this construction the lever is allowed a. certain amount of sliding movement on its supporting pin.

The invention is described in detail in connection with the accompanying drawings, in which z- Figure 1 is a side elevation, partly in section.

Fig. 2 is a plan View with some of the parts omitted.

Fig. 3 is a vertical cross-section showing a detail on an enlarged scale.

Referring to the drawings, 1 and 2 desig nate the warp beams from which the warp threads are drawn downwardly over the periphery of a disk 3. From the disk 3 the threads are drawn inwardly over the inner face of a ring 1-, and thence downwardly through the eyes 5 of heddles 6. From the heddles the threads pass through an annular throat 7 in which the shuttle moves under the action of the electromagnets 8. Whether the warps, at the moment in which the shuttle passes, are placed at one side thereof or at the other depends on the momentary position of the heddles 6, the latter being reciprocated by means of the drawing rods- 9. These rods are moved outwardly or inwardly by rotatable annular cams 10 which are connected to the inner ends of the rod.'

The cams are mounted upon a rotatable shaft 11 having a fixed bevel wheel 12 which engages another bevel wheel 13 keyed to the driving shaft 14c. By this mechanism the movement of the rods 9 is a controlled periodical one.

This movement however, is only imparted to one or more of the heddles of a corresponding series, when the small electromagnet 15 3) coacting with eachheddle is excited.

"his excitation causes a lever 16, pivoted to each of the heddles 6, to swing by a pin 17 of the heddles, thus bringing a nose 18 of the lever into the path of a lug 19 secured to the rod 9. When under the action of the corresponding cam 10, the rod 9 moves to the left, the heddle 6 is carried along by the nose 18 and the lever 16, first under the influence of the electromagnet 15 and after that by tie guiding surface of the frame 20, is maintained in engagement with the lug 19. When the rod 9, either by means of the cam or a coil spring 21, returns to the right, the heddle is moved, back in that direction by the lug 19 engaging a lug 22 secured to the heddle.

As soon as'the position shown in Fig. 3 is again reached, the nose end of the lever 16 under the influence of the overweight at this end, falls back into a recess 23 of the frame 20, so that the nose 18 sinks flush with or below the upper face of the heddle. The recess 23 has a shoulder 24:, preventing said lever from sliding up the left inclined face of the recess over the influence of the friction between the lug 19 and the heddle, when the rod 9 moves to the left and the magnet is not excited. In order to permit the lever 16 to engage the shoulder 24, pro

vision is made for lost motion between the pin 17 and said lever. For this purpose the pin 17 is passed through a longitudinal slot 25 in the lever.

The distance over which the rods and, eventually also the heddles are reciprocated, is Such that .a warp running through the eye 5 of a heddle, in one extreme position of the heddle is placed at the inner side of the shuttle race and in the other extreme position at the outer side of the shuttle race.

Inview of the large number. of heddles necessary and owing to the fact that each heddle requires a small electromagnet, I prefer not to arrange all the heddles in the small plane, but to distribute said heddles over two or more parallel planes. In the embodiment shown, the heddles are arranged in three planes, which lie one above the other. This number may however, be increased or decreased.

The excitation of the electromagnets 15 depends on the pattern to be woven. This excitation may be obtained in any well known manner, for instance by meansof a drum rotated synchronously with the shuttle and the cams, and a perforated belt running over said drum, each perforation thereof. corresponding with a contact making device for one of the electromagnets.

This arrangement may be such that one end of the windings of all the electromagnets is permanently connected to one terminal ofa generation plant whilst the other terminal of said plant is connected to the metal "drum, and the other ends of said windings are connected to a corresponding number of contacts, sliding over said per forated belt, so that in passing over a perforation, the contact concerned touches the metal drum and the current is transmitted to the electromagnet belonging thereto. The alternative excitation of the magnets may be effected in any other way heretofore known.

What I claim and desire to secure by Letters-Patent is:

. in a circular weaving machine, a number of periodically reciprocated drawing bars, heddles reciprocated by said drawing bars and adapted to guide the warp threads, clutches arranged between the heddles and the drawing rods for connecting said drawing rods and heddles, and electromagnetic operating means for said clutches, each clutch including a lever arranged to fall by gravity to inoperative position upon deenergization of the electro-magnetic means.

2. A circular weaving machine of the kind defined by claim 1 in which each lever is pivotally mounted on a heddle, a lug carried by each of said drawing rods and be ing adapted to engage the lever of the heddle with which it cooperates, and a fixed lug carried by said heddle and engageable with the lug of the drawing rod.

3. A. circular weaving machine including a'series of reciprocating drawing rods provided with lugs, a series of heddles cooperating with said drawing rods and provided with pivoted levers having nose pieces designed to be engaged by said lugs, a fixed lug provided upon each of said heddles and engageable with a lug of one of the drawing rods, an electromagnet designed to excite said lever for moving its nose piece into a position to be engaged by the ing of the draw ng rod, and a guiding surface for each of said heddles provided wlth a depressed portion in which the nose end of the lever may fall for preventing the heddle from moving with the corresponding drawing rod.

l. A machine of the kind defined by claim 3 in which the pivotal mounting of each lever includes an elongated slot located in the lever and a pin carried by a heddle and passing through said slot.

In testimony whereof I have hereunto set my hand this seventh day of May, 1920.

CORNEUS JACOBUS FEUERSTEIN.

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