US1786238A - Separating device for intercrossing threads - Google Patents

Description

Dec. 23, 1930. w. HAMMER 1,786,238

SEPARATING DEVICE FOR INTERCROSSING THREADS Filed March 27, 1929 mlllllllnhm l nunmmm nj...l.ll

Patented Dec. 2 3, 1930 UNITEDSTATES P TENT-[OFFIC WILLIBALID HAMMER, or usr'nn, SWITZERLAND, VASSIGNOR TO THE nmivrz. ns'rnn FACTORIES FOR APPARATUS AND MACHINES, IFORMERLY ZELLWEGER LTD., 01:.

USTER, SWITZERLAND SEPARATTNG DEVICE FORINTERCROSSING THREADS Application filed. March 27, 1929, Serial no. 350,324, and in Switzerland March 28, 1928.

- It is known to employ, for instance inknottingmachines for joining warp threads, separatlng devices for intercrossing threads with turnable thread separating spindles which are provided withstop members past which thethread is to be moved, the separating of which threads from the bunch is contemplated. It is usual to form the separating.

. free the feed passage twice during each revo- V luti-on of the spindle. These separating spindles, in that they make a reciprocating turning movement unnecessary, promoting the operation.

Inthe above mentioned constructions, the main difficulties encountered in the separating of threads due. to their binding on each other, for instance it highly sized or flufiy threads are used, have not been taken care of,

so that hindrances'or interruptions in the working process. are liable to occur.

'In accordance with the invention relating to aseparating devicecomprising stop members on rotative separating spindles, the stop .35 members of the separating spindles are slid ingly reciprocated in the longitudinaldirece tion of the separatingspindles bymeans of control members, for the purpose of pushing the rows of threads backwards,-when athread is separated from one of them. 1 V

In consequence thereof, the separating of the threadfrom the row, along its full length, which has been isolated by the separating 'spindles and gripped by .afeed deviceisef 3945. fected and therebya quickand reliable work 1 assured;

ing even with threads of great adhesion is In the drawing an embodiment of this-separating device is shown by way of example:

Flgs. 1 and 2 illustrate the same in two elevatlons taken rectangularly to eachother;

Fig. 3 is a partial View seen from Ain Fig. tshows, on a larg'er scale a longitudinal elevation of a separating spindle, partly in section; I e V Figs. 5 and 6 are sections on the lines VV and VL-Vlin Fig. 4 respectively,

Figs. 7, 8 and 9 serve for explaining the working process.

Under the assumptionthat the separating device which isja modification of a similar device such as described in my previous application Ser. No. 265,716, forms a part of a knotting machine for joining the ends of thethreads' of two warps, four separating spindles 19, 22 are provided for and each time .two separating spindles positioned in thesamevertical plane above each other cooperate with the same war-p. The conical free ends of the separating. spindles 19 and 22 respectively are formed with a single screw thread'll sothat they have the tendency. to work themselves in between the threads confronting the same in the respectivewarp and to move the threads in proper orderto thev right in Fig. l. The threads of each warp are divided into two groups by lease bands 23 passing through bores 3 in the spindles 1.9, 22 which groups cross each other between; the two bands 23 or between thefspindles 19,22 respectively of a warp.

(Figs. 7 9.)' Of the consecutive warp threads one belongs to the one group of threads and the nextto the second group of threads and so on.

which isfixed to a guide member 18 by means of a plate 7 and suitable connecting bolts, which guide member is longitudinally displaceable on the spindle. A plate 9 engages with the guide member 8, which plate interconnects the stop members 6 of two separating spindles 19 or 22 respectively, cooperating with one and the same warp. The two connecting plates 9 of the device are each traversed by a pin 24, which serves for guiding them, when the stop members 6 are displaced. The two pins 2st are carried by a supporting frame 25 which besides is provided with cylindrical extensions 26 which serve as bearings for the separating spindles 19 and 22. The separating spindles 19 or 22 respectively cooperating with the same warp are interconnected by gear wheels 18 and 21 respectively which are driven by means of a bevel gear drive 17 and 20 respectively. The one wheel of the bevel gear drives 17 and 20 respectively is fixed to a shaft 1 1 and 16 respectively, which shafts are driven by bevel gear drives 13 and 15 respectively from shafts 10 and 12 respectively (see Fig. 2). The two shafts 10 and 12 are provided with spur gear wheels 27, which mesh with an intermediary gear wheel 28, causing the two shafts to cooperate whereby the one shaft 10 is driving. On each shaft 10 and 12 is provided a cam 29, the curved groove of which is in engagement with a control lever 30 which is pivoted on a pin 31. Each control lever 30 is linked to the connecting plate 9 for the stop members 6 of the corresponding pair of spindles 19 and 22 by means of a crank lever 32.

During the operation of the device, when the separating spindles 19 and 22 are rotated, their co-related stop members 6 are longitudinally displaced thereon by means of the control lever 30 i. e. they are moved to and fro relatively to the warp threads for the purpose of each time pushing the row of threads back behind the individual thread to be separated therefrom. The two cooperating spindles 19 and 22 consecutively, give a free passage for the thread of the one grou and thereafter for the thread of the other group etc. According to Fig. 7 due to the corresponding position of the stop member 6 on the respective lower and upper separating spindles 19, 22 the passage for the thread a of the two warps is freed, whilst for the thread 6 of each row the passage is blocked when the stop members 6 of the two spindles 19 and 22 are momentarily facing each other in their horizontal position. In the same moment the stop members 6 are advanced towards the respective warp so that, for example, the blocked thread 6 following the separated thread a is moved in' the position indicated in dotted lines in Fig. 1,-whereby naturally the threads following the thread I) in the group are pushed backwards also: then, by means which are not shown, the

separated thread a is removed from the operating zone of the separating spindles. During the backward motion of the stop members 6, the spindles 19, 20 or the stop members 6 respectively take up temporarily a position (as shown in Fig. 8), whereby the passage for the two warps is given free so that the same can again advance in the direction towards the stop members 6. Thereupon, the stop members 6 assume a position shown in Fig. 9 in which they give free passage to the previously blocked thread Z). Now, the aforesaid working process is repeated continuously.

This separating device of simple construction as described assures the isolating of each individual separated thread from the remainder of the threads of the corresponding warp in a reliable manner.

I claim:

1. In a separating device for warp threads comprising, cylindrical separating spindles each having an eccentric part cooperating with a row of warp threads, a stop member on each of said separating spindles adapted to be longitudinally reciprocated on said eccentric part and means for controlling the movement of said step members on said spindies.

2. In a separating device for warp threads comprising, cylindrical separating spindles each having an eccentric part cooperating with a row of warp threads, a stop member on each of said separating spindles adapted to be longitudinally reciprocated along said part, a longitudinal groove formed in each of said separating spindles in said part for guiding the stop member therein, and means for controlling the movement of said stop members on said spindles.

3. A separating device for warp threads comprising separating spindles circular in cross-section each having an eccentric part between its ends and a longitudinal guide slot in said ecentric portion, a stop member for each spindle slidable in its slot, mechanism for continuously rotating the spindles, means to connect the stop members in pairs, and means to reciprocate the pairs of stop members in their respective slots.

4. A separating device for warp threads, comprising cylindrical separating spindles cooperating with a row of warp threads each having a screw thread at one end and an eccentric portion, stop members slidable on the spindles and eccentric portion, and means to continuously rotate the spindles.

5. A separating device for warp threads, comprising hollow cylindrical spindles for receiving a lease band and each having an eccentric portion between its ends, a groove longitudinal of said portion, a stop member slidable in the groove, means to continuously reciprocate the members and means to continuously rotate the members.

6. A separating device for warp threads comprising eccentric cylindrical separating spindles projecting partly into the leased Warp, said spindles associated in pairs, a stop member on each spindle adapted to be longitudinally reciprooated thereon, a guide member for each of said stop members on the spindles,and a connectingplate connecting the guide members 1n pairs to re'clprocate the'stop members with respective spindles.

In testimony whereof I have signed my name to this specification. x

WVILLIBALD HAMMER.

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