US1714951A - Warp-separating machine - Google Patents

Description

y 28, 1929- I s. s. c. FLEISCHER 1,714,951

WAR? SEPARATING MACHINE Filed Nov. 14, 1927 VIII/VII Patented May 28, 1929.

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SVEND SIG'URD CHRISTIE FLEISCHER, OF ,OEARLOTTENLUND, NEAR COPENHAGEN,

, DENMARK.

WARP-SEPARATING MACHINE.

Application filed. November 14, 1927, Serial No. 233,248, and in Germany Novemberfii), 1926 My invention relates to thewarp separating operations when preparing for weaving, and has for its object to produce a warp separatingmachine able to be applied to the loom proper or to warptying or twisting in machines or like machines, and by'means of which the reaching in operations are always performed in a quickand flawless manner and independent of the warp qualities.

A main feature of my invention consists in providing a selecting member of a hook like or similar shape moved in a suitable mannerto and fro in the cross direction'of thehung up row of threads, and advanced in the direction of this row, which advancing is always performed in verysmall steps corresponding only to a fraction of the least thread thickness coming into consideration. Consequently, the selectingmember is moved several times toand fro for each .thread to be individually caught and presented for further operation whereby any simultaneous catching of two or more threads or of another thread than the extreme one, is pre vented. v

A further feature of my invention consists in providing means for suitably prepositioning the threads for the selecting memher so as to lie. regularly side by side without overlying each other, thus always enabling the selecting member to catch the very eX treme thread only. I

A further feature of my invention consists in providing meansfor preventing the,

accidental automatic return of the selecting member after the latter has caughta thread until the caught and presented thread has been removed.

In order to have my invention fully'understood, I have diagrai'nmatically represented it on the accompanying drawing'by way of an example.

i Fig. 1 is a'perspective view of a warp separating machine according to the invention and mounted on afixed screw spindle.

Figs. 2 and 3 show the selecting member in its outer and inner positions respectively.

Figs. i and 5 show the arresting of the selecting. member after having caught a thread. 7

Fig. 6 shows a modified detail of the ma chine.

According to Fig. 1 the machine consists of a suitable housing 6 mounted upon a screw spect, are means for'so spindle 7 mounted in a stand or frame of any suitable shape not shown on the drawing.

Within the housing 6 there. are. suitable means for having the housing stepwisely advanced along the spindle 7. As an example. 31 have shown a ratchet wheel 8 forming a nut on the screw. spindle, and axially secured to the housing by a fork like-or another suitable member 9, which ratchet wheel is engaged by a pawl 10 on a rocking arm 11.

p The rocking movement of the arm 11 is caused by some suitable motor such as an electromagnet or (301101" the llke 12 for the one direction and a spring or the like 13 for the other direction.

However, in l eu of the coil or the like there may be'mounted 1n the said stand or frame of thefscrew spindle'l', and parallel to the latter, another spindle or'a shaft'TO, turned 1n a constant manner by outer means, and which shaft actuates the rocking armll by a cam-disc 120 or likemeans slidably but not turnably mountedon it. A

As these and equivalent alterations of the details belonging to the advancing of the housing will beeasily understood without further explanation they are not shown on the drawing. i g

It do not confine myself to any special means for advancingthe housing along the spindle, but what I wish to cover in this reperforming the step; wise advancing that the length of every step as before mentioned, corresponds only to a fraction of the smallest thread thickness coming into consideration. For this purpose the screw spindle 7 and the ratchet wheel 8 may 7 be provided with suitablenumbers of threads.

and teeth respectively, or I may apply an y other suitable means of known kinds. A bar 14, slidably mounted in the housing 6 in the cross direction of the advancing 'movement or nearly so, 1S moved to and fro by means of the rocking arm 11 engaged by a pin or the like 15 on the bar.

A hook like selecting member 16 is turnably mounted on the outer end of the bar 14 and held in itsnormal position, shown in Figs. 1, 2 and 3, by means of a spring 1?,

I have shown the selecting'member 16 as a crank lever, the one arm of which forming a hook 18, is nearly perpendicular to the bar 14, whilethe'other arm 19 is allel to it. Near the latter arm 19 and fixed nearly par- 22 fixed to the housing 6.

I thread 251, the selecting member is regularly side by side. 1

to the housing 6 there is a member 20 for preventing the automatic returning of the selectwhich member 20 will be more particularly described in the following.

At a certain distance from the selecting member the bar 14 carries an arm 21 protruding in a bent plate or thread tensioner The front edge 23 of the arm 21 passes somewhat over the front edge 24 of the thread tensioner 22 when the selecting member 16 enters its outer position as shown in Fig. 2.

he tensioning edge 24 for the threads 25 is preferably oblique so as to tension the threads to some extent during the advancing of the housing 6 along the thread row. VVhenever the arm 21 orits front edge 23 which may be parallel to the tensioning edge 24, enters its outer position shown in Figs. 2, 4 and 5, it repeatedly hits upon the somewhat tensioned threads 25, which hereby become properly separated from each other so as to lie Thus the thread 250 being always the very extreme one, is quite free so asto be properly 18, when reached by it.

caught by the hook is then brought'in the The caught thread "desired reaching in or presenting position 251 of Figs. 4 and 5.

Simultaneously therewith and owing to the pressure exercised by the tensioned turned against its spring 17, the arm 19 thereby touching the above mentioned member 20 serving to keep th hook 18 in its presenting position. According to Fig. 1 I have shown the member 20 provided with a contact 26 and a contact 27 placed along a part of the path of the rocking arm 11 for effecting the normal closing and breaking of the circuit of the electromagnct or coil 12. The current from the positive terminal passes through the coil 12 to a connection between the contacts 26 and 27. v The current to the negative terminal passes either through the contact 27 or through the bar14 and the arm 19 and the contact 26 to the arm 11. \Vhen the bar 14 is cast forwards through the momentary closing of the circuit at 27, and the arm 19 now touches the parallel contact 26 the current through the coil 12 will then be re-established and hence, the selecting member will be held in its outer position against the action of the spring 13. As soon as the caught thread 251 which has hitherto held the crank lever 16, 19 in the position of Fig. 5 is removed it will be turned by its spring 17 owing to the action of the oblique slide against which the spring acts so as to break the current at 26. The spring 13 thendraws the bar back thus enabling the recommencing of the normal advancing and the to and fro movements of the selecting member into catching the next thread.

111g member when having caught a thread,

. instance the front end 28 as In lieu of or in combination with a cont-act act mechanically as a stop or an arrester engaging a suitable part of the member 20 for shown in Fig. 5. The automatic returning of the bar 14 is then prevented. even in case of mechanical .drlvmg of the machine for instance a driving by means of the before mentioned cam disc 120 or the like.

Of course I do not confine myself to the described means for arresting the selecting member but what I wishto cover is any means for keeping the: individually caught thread 251 presented until removed-for fur ther operation.

Vhat I claim'is: 1. A machine for individually presenting one by one the threads-of a suspended row of threads, comprising a movably selecting member, separate means for moving the said member to and fro in a cross'direction to the row of threads, one of said means comprising a spring, means for advancing the said member in the direction of the row in small steps corresponding to a fraction of the thread thickness", and means for preventing the return of the selecting member by the action of the spring, after having caught a thread so as to be properly presented until such thread has been removed. 1 t Y 2. A machine for individually presenting one by one the threads of a suspended row of threads, comprising a screw spindle parallel to the row of threads, a housing movably! mounted on the said spindle, a bar slidably mounted in the cross direction of the spindle and protruding from the housing, a-selecting-member turnably mounted on the protruding end of vancing the housing in small steps along the screw spindle, and means for moving the bar and the selecting member to and fro in a cross direction.

3. A machine for individually presenting one by one the threads of a suspended row of threads, comprising a screw spindle parallel to the row of threads, a housing movably mounted on the said spindle, a bar slidably mounted'in the cross direction of the spindle and protruding from the housing, a selecting the said bar, means for admember turnably mounted on the protruding end of the said bar, means for advancing the housing in small steps along the screw spindle, means for moving the bar and the selecting member to and fro in a cross direction, and means for pre-tensioning the threads to be caught by the selecting member.

4. A machine for individually presenting one by one the threads of a suspended row of threads, lel to the row of threads, a housing movably mounted on the said spindle, a bar slidably mounted in the cross direction of the spindle and protruding from the housing,a'selecting comprising a screw spindle paralmember, turnably mounted on the protruding end of the said bar, means for advancing the housing in small steps along the screw spindle, means for moving the bar and the selecting member to and fro in a cross direction, a thread tensioner outside the housing for pre-tensioning the threads to be caught by the selecting member and a member mounted on the said bar and coacting With the said thread tensioner for properly separating the pre-tensioned threads.

5. A machine for individually presenting one by one the threads of a suspended row of threads, comprising a screw spindle parallel to the row of threads, a housing movably mounted on the said spindle, a bar slidably mounted in the cross direction of the spindle and protruding from the housing, a selecting member turnably mounted on the protruding end of the said bar means for advancing the housing in small steps along the screw spindle means for moving the bar and the selecting member to and fro in a cross direction, and means for arresting the selecting member in the presenting position When turned by a caught thread. 7 In testimony whereof I hereunto aflix my signature.

SVEND SIGURD CHRISTIE FLEISCHEK

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