US1567879A - Loom - Google Patents

Description

Dec. 29, 1925. r

B. C.-A. VORSTER LOOM Filed April 10, 1924 Patented Dec. 29, 19.25.

UNITED v STATES PATENT OFFICE.

BASTIAAN CAREL AueusT vonsTEn, 0E AMSTERDAM, NETHERLANDS, AsSIeNon To sYNDIoATE SoLTmAN c. s., or AMSTERDAM, NETHERLANDS, CONSTITUTED BY MYSELF; GERHABD' soLTMAN, 0E LONNEKER; HUIBERT SOER, ANToN JOSEPH xoENnAAD enoND, AND CARL ADOLF ELIAS, or AMSTERDAM, NETHERLANDS.

LOOM.

Application filed April 10, 1924. Serial No. 705,681.

To all whom it may concern:

Be it known that I, BASTIAAN OAREL AU- eus'r VoRs'rnn, subject of the Queen of the Netherlands, residing at Amsterdam, Province of North-Holland, Kingdom of the Netherlands, have invented certain new and useful Improvements in or Relating to Looms, of which the following is a specification.

In the Dutch specification Nr. 24:18? a method for continuously Weaving textile fabrics is disclosed in which the weft thread which is supplied from a stationary hank is passed by a main shuttle as two threads, one above the other through the lease and is locked in the selvage by means of a tensioned anchor thread which is fed from the secondary shuttle, the latter being movable in an additional shuttle race arranged substantially' at right angles to the lay of the main shuttle.

According to this specification the double weft thread is first passed over the anchor thread, which from the selvage of the fabric extends to an auxiliary shuttle or pirn, lying at the rear side of the lay whereupon the lay is moved forwards and simultaneously the auxiliary pirn is passed forwards between the two weft threads after which the lay with the main shuttle is moved backwards, the'shuttle is returned to the feed side of the loom, the anchor thread is returned to its initial position and the lease is changed successively.

The object of my present invention is an improved shuttle for carrying" into effect the method above referred to, such shuttle being characterized in that it is provided with a slot extending through the total height of the body of the shuttle and substantially over the total length thereof.

According to a further feature of the present invention the slot is arranged at the front side of the vertical longitudlnal plane of symmetry of the shuttle. The invention is hereinafter described with reference t the annexed drawingin which- Figure 1 shows a perspective view of the main lay of a loom for carrying out the method referred to;

Fi ure 2 is a plan view of theauxiliary shutte or pirn;

Figure 3 shows on an enlarged scale mechanism for operating the auxiliary shuttle;

Figures 4 and 5 show respectively a side and end elevation of one of the boxes of the auxiliary shuttle; and

F i ure 6 is a perspective view of the main cloth beam not shown. So far the loom is completely identical to'ordinary looms.

According to the invention a second stationary shuttle race 8 is provided, substantially at right angles to the main lay one end of said race being secured to the breast beam 7 and the opposite end being secured to a rod 9 mounted on the frame of the loom. The auxiliary shuttle race 8 is provided with two boxes 10, 11 for the auxiliary shuttle 12 which in Figure 2 is shown in plan view. The auxiliary shuttle 12 contains a supply of yarn wound on a pirn 13, which through the medium of a disc 14 is acted upon by a spring 15 of regulable tension by means of which therotating movement of the pirn 13 and therefore the paying-out of the thread is controlled. The auxiliary shuttle 12 is provided with three eyelets 16, 1'7, 18 through which the thread passes to the selvage at the corresponding edge of the fabric. s As shown in Figure 3, illustrating the means for operating the auxiliary shuttle 12, each box 10 or 11 of'this shuttle contains a picking member 19 or 20 having a slot which accommodates the upper extremities of the picking rods 21 and 22. For

the sake of clearness the latter arenot shown I in Figure 1, but more particularly illustrated in Figure 3. The picking rods are pivotally connected at their lower ends, to a beam 23 in the frame of the loom and they pass through slots 24, 25 in the shuttle race 8. V

The two picking rods 21 and 22 are interconnected by means of a tension spring 26,

each ro'd being provided with a pin 27,28 co-operating with a catch 29, 30 for locking and releasing the picking rods as hereinafter described. The horizontal arm of the catch 29, is provided with a projection 32 and by means of a spring 33 is connected to a fixed part of the machine. A clownwardly projecting arm of the catch 29 is connected to a lever 35 by means of a chain 34 or other flexible member the said lever )GlIlg pivotally connected to the frame of the loom by a pin 36 and carrying a lateral arm 37 which through the medium of a roller 38 rests against one of two cams 40 and il keyed on the shaft 39. The roller 38 is held in contact with the periphery of the cam 40 by means of a spring 42 engaging the lower arm of the lever 35, the other end of the spring being connected to a fixed part 43. The second cam 11 in the same way co-operates with a roller 4 1 carried by the arm 15 of a second lever 46 on the opposite side of the shaft 39 such lever being pivotally mounted on av pin a7 and acted upon by a spring 48 in such a way that the roller His always held in contact with the eccentric 11. The upper arm of the lever 46 moreover is connected by a short chain 4.9 or the like to a downwardly projecting arm of the catch 30 mounted on the pivot 50 of the rod 9. The catch 30 is also provided with a projection 51 and is normally held down by a spring 52.

The boxes 10 and 11 of the auxiliary shuttle race 8 on one side thereof are each provided with a slot 53 (Fig. 4) through which projects a block 5 1 carried by a small blade spring 55 secured to the. outer face of the box in such a manner that the auxiliary shutter 12 is resiliently held in the boxes. The left hand box 10 is further provided with two beak-shaped projections 56, 57, the object of which will appear from the following description of the operation of the loom, as also the object of the projections or arms 58, 59 secured to the lower face of the main lay 1.

The shuttle 5 shown in Fig. 6 is different from the shuttle ordinarily used in that it is of relatively great length (say 40 cms.) and is provided with a relatively narrow slot 60 extending through the total height of the body of the shuttle and substantially over the total length thereof, such slot being preferably arranged on the front side of the vertical longitudinal plane of symmetry of the shuttle. Through this slot the weft thread 61, taken from a stationary cop or hank 62 which is of relatively arbitrary dimensions, is passed, the thread preferably being guided by a roller 63 through the opening 6 1. It is obvious that the weft thread 61 may also be guided in any other way and suitable tension devices may be provided. The object of the longitudinal slot 60 in the shuttle 0 will be hereinafter explained.

The operation of the loom is as follows:

The main shuttle 5 is thrown from left to right and during this movement carries with it the weft thread 61, one end of which is locked in the left hand selvage of-the fabric, so that when such thread reaches the other side of the loom it is double. The auxiliary shuttle 12, at the beginning of the operation, is held in the front box 10 of the auxiliary shuttle race 8 (Fig. whereas the pins 27, 28 of the two picking rods 21 and 22 engage the locking projections 32 and 51 of the catches. The spring 26 is by that time extended. hen the shuttle 5 has travelled part of its way, the cam 40 is rotated and thereby the lever 35 is moved rearwardly in such a way that the projection 32 releases the picking rod 21 and the auxiliary shuttle 12 is thrown to the rear end of its shuttle race 8 where it is received in the'box 11 and held therein by means of the spring 55. The thread 13of the auxiliary shuttle 12 Which is incorporated in the selvage, then lies eX- tended across the path of the main shuttle 5 which passes over this thread, so that the two weft threads 61 are both above the looking thread 13.

The lay 1 is now moved forward, so that the double weft thread is temporarily beaten up and the front picking rod 21 is pushed behind the projection .32 by the projection 58 of the lay 1, whereas the spring 26 is again extended. The two weft threads 61, by the forward movement of the lay 1 are spread by the .projections56. and 57 whereas through the medium of the cam 41, the lever L6, the chain 49 and the catch 30, the picking rod 22 is simultaneously released, so that the auxiliary shuttle 12 is thrown forward and passes between the two weft threads 61. During the return movement of the lay 1 the rear picking rod 22 is again pushed behind the projection of the catch 30 and the spring 26 is extended. On account of the fact that the auxiliary shuttle has been passed between the two weft threads 61, the thread 13 of the auxiliary shuttle is looped around the lower weft thread so that when the main shuttle 5, during the return movement of the lay, is returned to the feed side of the loom, said lower thread is locked and the main shuttle 5 moves along the upper weft thread, which thereby is drawn loose from theapexof the lease. During the subsequent forward movement of the main lay thedouble weft thread is definitely beaten up, whereupon the lease is changed. All parts are then in their initial position, so that a new series of move ments may be started.

Owing to the fact that the main shuttle according to the invention is, provided with a longitudinal slot instead of a bore for the weft thread, there is the advantage that,

when the main shuttle is in the left hand box, as shown in dotted lines in Fig. 1', the weft thread which in this case lies in the right hand extremity of the slot, also on account of the relatively great length of the main shuttle, only forms a short loop and need not pass through the box to the left hand extremity of the shuttle. This prevents the threads from getting entangled in the box at the beginning of the next-movement of the main shuttle. Moreover on account of the fact that the slot is not in the middle of the shuttle, but lies near the front edge thereof, the weft thread at the beginning of the next movement of the shuttle, is prevented from lying at the wrong side thereof, which would cause the formation of a turn in the thread.

What I claim is:

1. In a continuous Weft loom, a shuttle of the character described, characterized by the shuttle and substantially over the total length thereof.

2. In a continuous weft loom, a shuttle as claimed in claim 1, characterized by the fact that the slot is arranged at the front side of the vertical longitudinal plane of symmetry of the shuttle.

3. In a continuous Weft loom, a shuttle provided with a thread-carrying slot extend-t ed through the entire width of the body of the shuttle and over a major portion of the length thereof.

4. A shuttle as claimed in claim 3, characterized by the fact that the slot is arranged at the front side of the vertical longitudinal plane of symmetry of the shuttle.

5. In a continuous weft loom, a shuttl provided with a thread-carrying slot extending through the entire width of the body of the shuttle and over about two-thirds of the length thereof. 7

In testimony whereof I affix my signature.

EASTMAN CARE]. AUGUST VORSTER.

Certificate of Correction.

It is hereby certified that the name of the assignee Soetman in Letters Patent No. 1,567 ,879, granted December 29, 1925, upon the application of Bastiaan Carel August Vorster, of Amsterdam, Netherlands, for an improvement in Looms, Was erroneously written and printed as Soltman, Whereas said name should have been written and printed as Soetman, as shown by the records of assignments in this oflice; page 2, line 40, for the word shutter read shuttle; and that the said Letters Patent should be read With these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 23d day of March, A. D. 1926.

[SEAL-1 M. J. MOORE,

Acting Oawwnissz'oner of Patents.

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