US3365765A - Process and apparatus for warping and sizing of short warp threads - Google Patents

Description

Jan. 30, 1968 E. BALTZER 3,365,765

PROCESS AND APPARATUS FOR WARPING AND SIZING OF SHORT WARP THREADS Original Filed Dec. 27, 1963 4 Sheets-Sheet 1 Fig. 7

' INVENTOR: Erich BALTZER BY flmm am I his ATforney Jan. 30, 1968 E. BALTZER 3,365,765

PROCESS AND APPARATUS FOR WARPING AND SIZING OF SHORT WARP THREADS Original Filed Dec. 27, 1963 4 Sheets-Sheet 2 Fig. 2 54 56b 26a 26 E 52 \V IL L v 2 56 52b 26 Fig.3

INVENTOR his Afforney E. BALTZER 3,365,765 PROCESS AND APPARATUS FOR WARPING AND SIZING v OF SHORT WARP THREADS 1963 Jan. 30, 1968 4 Sheets-Sheet Original Filed Dec.

INVENTOR: Erich BALTZER BY 14m 0 5% his Afforney Jan. 30, BALTZER PROCESS AND APPARATUS FOR WARPING AND SIZING OF SHORT WARP THREADS Orlglnal Filed Dec. 27, 1963 4 Sheets-Sheet 4 Fig. 6

INVENTOP. Erich BALTZE R BY mam-u his Attorney United States Patent Ofitice 3,365,365 Patented Jan. 39, 1968 3,365,765 PROCESS AND APPARATUS FOR WARPING AND SIZING OF SHORT WARP THREADS Erich Baltzer, Nordhorn, Germany, assignor to Hergeth KG. Maschinenfabrik u. Apparatebau, Billerbecir, Westphalia, Germany, a firm Original application Dec. 27, 1963, Ser. No. 333,915, now Patent No. 3,247,568, dated Apr. 26, 1966. Divided and this application Mar. 31, 1966, Ser. No. 539,185

Claims priority, application Germany, Apr. 3, 1965, H 55,698 14 Claims. (Ci. 2822) This application is a continuation of my co-pending application Ser. No. 333,915, filed Dec. 27, 1963, now US. Patent 3,247,568, granted Apr. 26, 1966.

The invention relates to an improved process and apparatus for warping of short warp threads, in particular, for the manufacture of fabric in multi-color weaving.

In the process disclosed in my co-pending application Ser. No. 333,915, threads of dififerent colors are wound successively in a single layer. The endless bands thus formed by a group of threads are unwound in a transverse direction after the ends of the wound thread have been glued together. The threads of each loop wound by this process are crossed. Furthermore, the process provides for the simultaneous winding of a plurality of threads.

Although the lengths of the endless bands formed by groups of threads by the aforesaid process can be adjusted, such adjustments are very limited in their scope. Thus the adjustment is made by varying the distance between winding elements. This change of distance does effectuate an adjustment, but only to a very limited extent, namely a reduction in length from a maximum warp length to some smaller length. It is thus only possible to adjust the length of the endless band within the physicial limitations of the apparatus disclosed in my co-pending application, application Ser. No. 333,915. Furthermore, it should be noted that the adjustment can only be made by changing the position of the exterior winding element in the supporting frame with respect to the other Winding element which is a cumbersome operation.

It is a general object of my invention to improve the process disclosed in my co-pending application Ser. No. 333,915 by providing adjusting means for adjusting the warp length of the endless bands formed by groups of threads which do not require a change in position of the winding elements.

In the apparatus disclosed in my co-pending application Ser. No. 333,915 the threads of different color are successively wound in juxtaposition and in one layer. The thus obtained endless warp band is then unwound in a transverse direction. In each of the loops formed around the winding elements the thread is crossed twice. Furthermore, several threads can be wound simultaneously. The thread drawn from a bobbin is wound around the fixedly mounted winding element in endless form by means of a thread guide, the thread being moved on the winding element and progressing thereon automatically in a transverse direction. The thread guides have the shapes of tubules and are either manually or by means of gripping devices transferred from a thread guide support member to the conveyor or device, or are fixedly secured on the conveyor device itself.

It is another general object of this invention to provide an improved apparatus for warping of short warp threads which has automatic means for transferring the preselected thread from a thread guide support member to the conveyor device.

Referring now more specifically to the improved apparatus and process of my invention, I have designed a machine by means of which warps of diiferent lengths can be warped without changing the distance between the axes of the winding elements. The adjustment for the warp lengths is eifectuated by activating and deactivating at will the means for crossing the wound thread after a pre-selected number of loops have been wound around the winding elements. Only those threads are cut which have been crossed. In the event it is desired to obtain a warp that is longer than the peripheral distance around the two winding elements plus the distance ther-ebetween, the thread is wound a pre-selected number of times around the winding elements without being crossed by the crossing means. The latter means are then only activated during the formation of the first and last loop around the two winding elements so that a thread cross is only formed at the beginning and at the end of the warp that is being wound a plurality of times around the two winding elements. Since the warp threads are only cut at the thread crosses, a warp having a length several times that of a single warp loop is obtained, the overall length depending on the number of loops that have been wound without thread crosses. By means of the aforedescribed apparatus it is possible to produce warps of different lengths without having to change the distance between the winding elements, i.e., an apparatus of constant height or width depending on the arrangement of the machine. Thus the adjustment limitations for the warp lengths are exclusively controlled by the size of the apparatus, i.e., its height or width. It is therefore advantageous to make the distance between the winding elements relatively small, since multiples of a single warp loop can be easily produced. This design criteria makes for warping apparatus of relatively small size which results in considerable savings in manufacturing costs and installation space.

The automatic means for transferring the pre-selected thread from a thread guide support member to the conveyor device comprise an arm for each thread of different color which is pivotally mounted in front of one end of the conveyor device. Each of the aforesaid arms has an eyelet at its free end through which passes a corresponding thread. Furthermore, there is mounted on the frame of the apparatus an additional member, provided with an eyelet, at about the level of the pivot axes of the pivotally mounted arms which serves to guide a thread to the automatic transferring means. The endless belt of the conveyor device is provided with a catch hook. By the agency of a rotary magnet or other suitable means a first one of the arms carrying a thread of a pre-selected color is pivoted within the range of the catch hook so that the latter takes up the thread and winds it in loops around the winding elements. When the color of the warp thread is to be changed, the first arm is pivoted back into an inactive position by its rotary magnet so that the corresponding thread can no longer be taken up by the catch book. The arm of the other selected color is then pivoted into its active position wherein the catch hook of the endless belt can take up the newly selected thread. In this manner the change of color of the warp threads for the warp is more securely and efficiently effectuated. The aforedescribed arrangement is not prone to malfunctioning because of its simple operation and construction. Furthermore, the control of the apparatus while operating, has also been simplified.

Several illustrative embodiments of the apparatus and process in accordance with this invention together with additional objects and advantages thereof, will be best understood from the following description of specific embodiments when read in connection with the accompanyiag drawings in which:

FIG. 1 is a schematic elevation of the apparatus for warping short threads according to this invention;

FIG. 2 is a partial cross-sectional view in an enlarged scale of one of the shafts which is instrumental in crossing the threads during the warping operation;

FIG. 3 is a side view of the arrangement in the apparatus illustrated in FIG. 1 of the shafts for crossing the threads;

FIG. 4 is a side elevation illustrating schematically in an enlarged scale the mechanism for guiding the threads to the conveyor device of the apparatus of this invention;

FIG. 5 is a front elevation illustrating schematically in an enlarged scale the mechanism for guiding the threads to the conveyor device of the apparatus of this invention;

FIG. 6 is a side view partially in cross-section of a further embodiment of this invention illustrating a shaft for crossing the threads in accordance with this invention; and

FIG. 7 is a side view partially in cross-section of yet another embodiment of this invention of a shaft for crossing the threads in accordance with this invention.

Referring now specifically to the drawing, there is illustrated in FIG. 1 an apparatus for warping short warp threads which comprises two side frame members 1 and 2 and a transverse bottom support frame member 4. The winding elements 5 and 6 which are embodied as deflection cylinders are rotatably mounted. A plurality of bands 9 are movably mounted on the deflection cylinders 5 and 6 and move in the axial direction with respect thereto. The conveyor device 12 serves to pick up one of the threads 37a, b, c, and winds it around the winding elements 5 and 6. This conveyor device '12 is provided with an endless band 13 that runs around the pair of wheels 14 which are respectively mounted adjacent to the winding elements 5 and 6. The projecting shaft members 26 and 27 are rotatably mounted in the frame member 2 and are instrumental for crossing the threads that are being wound around the winding elements 5 and 6 as will be described in detail below. The shaft members 26 and 27 are provided at their free ends with angular projections 26a and 27a as illustrated in FIGS. 2 and 3. The shaft members 26 and 27 are axially supported in the cylindrical support members 28 which are rotatably mounted by means of suitable bearing means, as for example needle bearings 51 inside a second cylindrical flanged support member 50. A rotary magnet 52 is secured by means of a plurality of bolts 52b on a support plate 53 which is in turn secured by means of a plurality of bolts 54 to the frame member 2 and is respectively axially connected via a flange member 56a to the shaft members 26 and 27. The flange member 56a is connected to the cylindrical support member 50 by means of a plurality of bolts 56b and is axially connected to the shaft 55 of the rotary magnet 52 by means of a wedge key 56.

The control of the rotary magnets 52 for selectively turning the shaft members 26 and 27 is coordinated with the movement of the band 13 and the thread guide secured thereto so that a thread crossing is selectively formed during the winding of the thread about the winding elements 5 and 6. Thus if a warp having the length corre sponding to one periphery around the two Winding ele ments 5 and 6 is to be warped the thread crossing is effectuated during the winding of each loop. If, however, a longer warp is to be produced, that is to say a warp having a length which is a multiple of the length of the aforementioned periphery, an impulse break circuit disconnects the rotary magnets 52 so that the shaft members 26 and 27 are transferred into a neutral position in which no thread crossings can be effectuated. The thread is only crossed at the beginning and at the end of the formation of a plurality of loops, that is to say during the formation of the first and the last loop. Thus, after completion of the multiple run, only the crossed threads are cut and thereby lets 65a, 65b, 65c

a warp having the length corresponding to a multiple of the single one periphery-warp length will have been produced. The control of the rotary magnets 52 can be effectuated by known electrotechnical means .(not illustrated) such as for example electronic circuitry, relays and the like. A preselected program of movements for the shaft members 26 and 27 can be electrically transmitted to the rotary magnets via the aforesaid known electrotechnical means by inserting a punched program card 57 into a receiving slot provided for this purpose in the frame member 2.

The arrangement for changing the threads of different colors is advantageously provided with an endless band 13 on which there is secured a thread guide 58 which is so shaped that it may act as a thread hook. The latter cooperates with the swingable arms 59a, 59b, 59c. In the whole arrangement a sufiicient number of swingable arms are provided so as to correspond to the number of bobbins of thread of different colors 36a, 36b, 36c. Each one of the free ends of the arms 59a, 59b, 59c is provided with an eyelet 60a, 60b, 60c through which a corresponding thread is guided. Furthermore, a corresponding number of stationary eyelets are mounted on the frame member 1 at approximately the level of the pivot axis of a corresponding swingable arm. Each swingable arm 59a, 59b, 59c is provided with a rotary magnet 52a, 52b, 52c whereby each rotary magnet is connected to a separate independently activatable control circuit. A bobbin support stand 63, which may be embodied as a completely separate structure, serves to support a plurality of bobbins of thread of different colors, which are used for warping of short warps of diflerent colors. The support stand 63 is provided with a first group of eyelets 64a, 64b, 64c and a second group of eyeall of which are mounted on one side of the stand 63, and which are instrumental in guiding the threads 37a, 37b, 37c therethrough and through the stationary eyelets 61a, 61b, 61c on the frame 1 from whence they are guided through the eyelets 60a, 60b, 60c of the swingable arms 59a, 59b, 59c The free ends of the threads of different colors are then removably secured, as per glueing, on the movable bands 9 of the winding roller 6, i.e., the winding element.

The swingable arms 59a, 59b, 59c assume the neutral position as illustrated in FIGURES '1 and 4, that is to say in a first position behind the guide roller 14. The threads 37a, 37b, 37c run in this first position at a substantial distance from the endless band '13, respectively the catch hook 58, to the eyelets 60a, 60b, 60c of the swingable arms. Consequently, in this first position the threads 37a, 37b, 37c run substantially along line 66 illustrated in FIG. 4, in which which they can not be taken up by the catch hook 58. If, however, one of the threads 37a, 37b, 37c emanating from one of the bobbins 36a, 36b, 36c is to be wound around the winding elements 5 and 6, the corresponding rotary magnet pivots its swingable arm into a second position indicated by the dot-dash line in FIG. 4 wherein the thread runs along the lines 67, 68 since the free end thereof is secured to one of the bands 9. In this manner the thread is run along line 68 so that the thread can be taken up by the catch hook 58 which is mounted on the moving endless band 13, and is shifted by the latter onto Winding elements 5 and 6. The other threads remain, however, in the position indicated by line 66, in which position the threads can not be touched by the catch hook 58. After the winding operation of a particular preselected thread has been completed, the corresponding swingable arm is pivoted back to its first position by its rotary magnet and another preselected thread can then be swung to the second position by the agency of an other swingable arm and its rotary magnet so that said other thread is then wound around the winding elements 5 and 6. The knotting of the first and second preselected threads of different colors is not required. The Warped threads of different colors thus form a multi-color warp on the winding elements 5 and 6 which can then be removed from the Winding elements 5 and 6 after having been cut at the thread crossings.

A cover 69 mounted adjacent to the guide wheel 14 aids in guiding the thread.

The swingable arms 59a, 59b, 59c are mounted in corresponding slits 70a, 70b, 70c in the frame 1.

There are illustrated in FIGURES 6 and 7 further embodiments of the shaft members 26 and 27 which are instrumental in forming the thread crossings.

The shaft members, one of which is illustrated in FIG. 6 and is designated as 2612, is fixedly, but removably mounted on the frame member 2. The shaft member 26b, which is hollow, is provided at its free end with a tie rod 71 which is axially movably mounted in the shaft member 26b. The tie rod 71 is provided at its free end with a hook 72 which extends into the path of the catch hook 58. There is mounted inside the hollow shaft member 26b a solenoid 74 and a coil spring 73. The spring 73 axially pulls the tie rod 71 toward the frame member 2, whereas the solenoid 74 pulls the tie rod 72 in the opposite direction when activated at a preselected moment. The hook 72 can thus be made to selectively protrude from a slit opening 75 at the free end of the shaft member 261). The hook 72 has at its front top end an inclined surface 76.

The solenoid 74 is activated by a counting mechanism for counting the number of loops of wound threads, The counting mechanism is provided with a photocell (not illustrated) which counts the number of revolutions of the endless band 13 i.e., the catch hook 58. The counting mechanism is connected to a switching mechanism (not illustrated) which alternately activates the solenoids respectively mounted in the upper and lower shaft members which thereby alternately project the hooks 72 into the path of the revolving catch hook 58a. Due to the recipro cal movement of the tie rod 71 the thread is positioned alternately in front and behind the hook 72 on the portion 77 of the shaft member 2612. The thread which is positioned behind the hook 72 remains on the front portion of shaft member 26b which has the slit 75. The thread which is positioned in front of the hook 72 is peeled oft" the portion 77 of the shaft member 26b and thus positions itself behind said shaft member. The same operation takes place at the other shaft member which is also mounted at the same side of the machine. The short catch hook projection 58a of the catch member 58 serves to prevent the thread from prematurely jumping away from the catch hook member 58. The aforesaid catch hook projection 58a cooperates with the hook 72 of the tie rod 71 in a manner that assures that the thread during the reciprocal movement of the tie rod 71 is alternatively positioned in front and behind the hook 72. The threads are transported due to the transverse movement of the bands 9 in the direction of the frame 2 which supports the shaft members. When warps of multiple war lengths are being produced by the device of this invention, the books 72 of the shaft members 2612, arranged one below the other, are alternately reciprocally moved after a preselected number of revolutions of the band 13.

The embodiment of FIG. 7 illustrates a shaft member 26c which, insofar as the tie rod 71, hook 72, coil spring 73 and solenoid 74 are concerned, corresponds substantially to the embodiment illustrated in FIGURE 6. The shaft member 26c is provided at its free end with an axial conical projection 78 from which the hook 72 of the tie rod 71 protrudes. The operation of the hook 72 of this embodiment is similarly controlled by a counting mechanism and a photocell (not illustrated) as well as by an electrically controlled switching mechanism (not illustrated) by means of which the hooks 72 of both the shaft members 260 are caused to alternately be projected forward.

While specific embodiments of the invention have been shown and described in detail to illustrate the application of the inventive principles, it will be understood that the 6 invention may be embodied otherwise without departing from such principles.

What is claimed is:

1. A process for warping in multicolor weaving, comprising the steps of winding successively in a single layer threads of different groups on two winding elements, continuously maintaining a transverse feed on said winding elements during the winding operation, crossing said threads between said winding elements after said threads have been wound a preselected number of loops around said winding elements, and transversely cutting said wound threads at their crossing points into separate thread group bands.

2. A process for warping of short warps in the production of fabric samples in multicolor weaving, comprising the steps of drawing a thread from a bobbin, winding said thread around a pair of winding elements thereby forming a thread group which is wound around said winding elements, automatically continuously feeding said thread transversely on said Winding elements during winding, automatically crossing said thread between said winding elements at preselected intervals during winding of said thread, and cutting said wound thread at its crossing points only into separate thread group bands.

3. The process as set forth in claim 2, including the further steps of swinging a preselected thread automatically into the path of a take-up mechanism, the latter engaging said preselected thread and Winding said thread around said winding elements.

4. The process for warping of short warps in the pro duction of fabric samples in multicolor Weaving as set forth in claim 3, including at least one pair of shaft members reciprocally mounted on a frame and adapted to move into the path of said winding thread, each one of said pair of shaft members being provided with a hook at its free end which is adapted to cooperate with said take-up mechanism in crossing said thread between said winding elements.

5. The process for warping of short warps in the production of fabric samples in multicolor weaving as set forth in claim 4, wherein said pair of shaft members is mounted one below the other in said frame, said hook of each one of said pair of shaft members being axially reciprocally movably mounted.

6. The process for warping of short warps in the production of fabric samples in multicolor weaving as set forth in claim 5, including a solenoid axially mounted in each one of said pair of shaft members and being operatively connected to said hook, and biasing means mounted in each one of said pair of shaft members and operatively connected to said hook, whereby said solenoid axially selectively projects said hook from each one of said pair of shaft members against the action of said biasing means.

7. A machine adapted for warping of short warp threads in multicolor weaving, comprising in combination, a pair of drums operatively mounted in said machine, continuous transverse thread feeding means operatively mounted on said pair of drums for continuously transversely feeding the thread during winding, thread winding and conveyor means mounted adjacent said pair of drums, and adapted to wind in a single layer a thread around said pair of drums, an endless band mounted around said winding and conveyor means, thread takeup means mounted on said endless band, at least one bobbin of thread mounted adjacent to said machine, at least one swingable arm having thread guide means at its free end being mounted on said machine adjacent to said winding and conveyor means, and electric motor means operatively connected to said swingable arm and adapted to pivot the latter toward said endless band, whereby when said thread take-up means on said endless band are revolved by said winding and conveyor means a thread from said bobbin is guided by said thread guide into the path of said revolving thread take-up means and is taken up by the latter means and wound around said pair of drums.

8. The machine as set forth in claim 7, wherein there are mounted a plurality of threads of different colors adjacent to said machine, and wherein for each bobbin of thread of different color there is pivotally mounted on said machine adjacent to said winding and conveyor means a swingable arm having a thread guide means at its free end.

9. The machine as set forth in claim 8, wherein said thread take-up means include a thread hook, and said thread guide means include an eyelet at the free end of each swingable arm through which a corresponding thread passes.

10. A machine adapted for warping of short warp threads in multicolor weaving, comprising in combination, a pair of spaced drums operatively mounted in said ma chine in parallel relationship to each other, continuous transverse thread feeding means operatively mounted on said pair of drums for continuously transversely feeding the thread during winding, thread winding and conveyor means mounted adjacent said pair of drums and adapted to wind in a single layer a thread around said pair of drums, an endless band mounted around said winding and conveyor means, thread take-up means mounted on said endless band and adapted to take-up a thread and wind the latter around said pair of drums, and thread crossing means operatively mounted in said machine between said pair of drums and adapted to cross the thread which is being wound around said pair of drums at preselected intervals.

11. A machine adapted for warping a short warp threads in multicolor weaving, comprising in combination, a pair of spaced drums operatively mounted in said machine in parallel relationship to each other, continuous transverse thread feeding means operatively mounted on said pair of drums for continuously transversely feeding the thread during winding, thread winding and conveyor means mounted adjacent said pair of drums and adapted to wind in a single layer a thread around said pair of drums, an endless band mounted around said winding and conveyor means, thread take-up means mounted on said 8 V endless band and adapted to take-up a thread and wind the latter around said pair of drums, and thread crossing means operatively mounted in said machine between said pair of drums and adapted to cross the thread which is being wound around said pair of drums at preselected intervals, at least one bobbin of thread mounted adjacent to said machine, at least one swingable arm having thread guide means at its free end being mounted on said machine adjacent to said winding and conveyor means, and electric motor means operatively connected to said swingable arm and adapted to pivot the latter toward said endless band, whereby when said thread take-up means on said endless band are revolved by said winding and conveyor means a thread from said bobbin is guided by said thread guide into the path of said revolving thread takeup means and is taken up by the latter means and wound around said pair of drums.

12. The machine as set forth in claim 10 wherein said thread crossing means comprises at least one pair of parallel projecting reciprocally mounted shaft members which are supported at one end in said machine and project between said pair of drums in substantially parallel relationship thereto, each one of said pair of shaft members having a thread hook at its free end for forming the thread crossing between said pair of drums.

13. The machine as set forth in claim 12, wherein said thread hooks of said pair of shafts cooperate with said thread take-up means in forming the thread crossings between said pair of drums.

14. The machine as set forth in claim 12, including a solenoid axially mounted in each one of said pair of shaft members and being operatively connected to said hook, and biasing means mounted in each one of said pair of shaft members and operatively connected to said hook, whereby said solenoid axially selectively projects said hook from each one of said pair of shaft members against the action of said biasing means.

No references cited.

LOUIS K. RIMRODT, Primary Examiner.

Claims (1)

1. 7. A MACHINE ADAPTED FOR WARPING OF SHORT WARP THREADS IN MULTICOLOR WEAVING, COMPRISING IN COMBINATION, A PAIR OF DRUMS OPERATIVELY MOUNTED IN SAID MACHINE, CONTINUOUS TRANSVERSE THREAD FEEDING MEANS OPERATIVELY MOUNTED ON SAID PAIR OF DRUMS FOR CONTINUOUSLY TRANSVERSELY FEEDING THE THREAD DURING WINDING, THREAD WINDING AND CONVEYOR MEANS MOUNTED ADJACENT SAID PAIR OF DRUMS, AND ADAPTED TO WIND IN A SINGLE LAYER A THREAD AROUND SAID PAIR OF DRUMS, AN ENDLESS BAND MOUNTED AROUND SAID WINDING AND CONVEYOR MEANS, THREAD TAKEUP MEANS MOUNTED ON SAID ENDLESS BAND, AT LEAST ONE BOBBIN OF THREAD MOUNTED ADJACENT TO SAID MACHINE, AT LEAST ONE SWINGABLE ARM HAVING THREAD GUIDE MEANS AT ITS FREE END BEING MOUNTED ON SAID MACHINE ADJACENT TO SAID WINDING AND CONVEYOR MEANS, AND ELECTRIC MOTOR MEANS OPERATIVELY CONNECTED TO SAID SWINGABLE ARM AND ADAPTED TO PIVOT THE LATTER TOWARD SAID ENDLESS BAND, WHEREBY WHEN SAID THREAD TAKE-UP MEANS ON SAID ENDLESS BAND ARE REVOLVED BY SAID WINDING AND CONVEYOR MEANS A THREAD FROM SAID BOBBIN IS GUIDED BY SAID THREAD GUIDE INTO THE PATH OF SAID REVOLVING THREAD TAKE-UP MEANS AND IS TAKEN UP BY THE LATTER MEANS AND WOUND AROUND SAID PAIR OF DRUMS.

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