US3831253A - Apparatus for making memory storage matrices - Google Patents

Abstract

An apparatus for making memory storage matrices comprises Y coordinate drive wires strung through cores, wire fastening assemblies, a threading member for threading matrices with X coordinate drive wires, a threading mechanism for wiring a digit winding through the matrix cores, which includes a movable positioning mechanism connected with threaded bushings and disposed at an angle to the X wires, and tension devices with clamps, the positioning mechanism being made as a moving roll split into sections with handles having one longitudinal slot and grooves receiving the Y wires, the grooves for the Y wires being in the form of a spiral. The positioning mechanism can also be a vertically movable support positioned at an angle to the X wires and fitted with a means for forcing the Y-wire bundles closer together, comprising two members moving towards each other having teeth secured thereupon. The means for forcing the Y-wire bundles closer together may also be made as tension springs disposed against each Y-wire bundle.

Description

Burkin et ai.

[Ill 3,831,253 Aug. 27, 1974 APPARATUS FOR MAKHNG MEMORY STORAGE MATRICES Inventors: ,iury Alexandrovich Burkin,

Tsvetnoi proezd, 29, kv. 24; Jury Emelyanovicii Seleznev, Vesenny proezd 4a, k.v. 16, both of Novosibirsk, U.S.S.R.

Filed: June 15, 1973 Appl. No.: 370,468

Foreign Application Priority Data Apr. 27, 1972 U.S.S.R 1776225 June 16, I972 U.S.S.R 1797282 US. Cl. 29/203 MM lint. Ci. HOSk 13/04 Field of Search 29/203 MM, 203 B, 203 R,

29/203 DT, 203 D References Cited UNITED STATES PATENTS 9/1967 Der Voo 29/203 MM l/l97l Lima et a1 29/203 MM Primary Examiner-Thomas H. Eager Attorney, Agent, or Firm-l-iolman 8L Stern [57] ABSTRACT An apparatus for making memory storage matrices comprises Y coordinate drive wires strung through cores, wire fastening assemblies, .a threading member for threading matrices with X coordinate drive wires, a threading mechanism for wiring a digit winding through the matrix cores, which includes a movable positioning mechanism connected with threaded bushings and disposed at an angle to the X wires, and tension devices with clamps, the positioning mechanism being made as a moving roll split into sections with handles having one longitudinal slot and grooves receiving the Y wires, the grooves for the Y wires being in the form of a spiral. The positioning mechanism can also be a vertically movable support positioned at an angle to the X wires and fitted with a means for forcing the Y-wire bundles closer together, comprising two members moving towards each other having teeth secured thereupon. The means for forcing the Y-wire bundles closer together may also be made as tension springs disposed against each Y-wire bundle.

9 Claims, 7 Drawing Figures mmsa PAIENIEUAUGZHQN WEEK 3 EFF PAIENIE AUEZYISM WEE? M W 6 APPARATUS FOR MAKING MEMORY STORAGE MATRICES BACKGROUND OF THE INVENTION This invention relates generally to the wiring of apertured cores used in ferrite core matrices and memory cubes using the third conductor, a digit winding for electronic computers, and more particularly it relates to apparatus for making memory storage matrices The invention can be used for wiring any matrices of any storage capacity assembled from cores of any size, including superminiature cores, by conductors of any diameter, including microwire. The invention is suitable for making memory matrices and units with any arrangement of cores at the intersections of horizontal and vertical lines and permits of wiring a digit winding practically for all known topological patterns of matrices, except for a diagonal topology. The invention is also applicable to threading matrices in which drive windings are made up of two or more turns.

Devices for making memory storage matrices are known which mechanize and automate the threading operation.

One known device comprises Y wires threaded through piles of ferrite cores secured in a row to a frame, an aligning element having a longitudinal guide for gripping the cores in succession and arranging them in a row, with a string of ferrite cores curving about the aligning element on one side so that the cores are spaced at regular intervals equal to the lead of the threading spiral, a coiling mechanism with a drive mounted on the butt end of the aligning element, a coiling wire for threading the matrix along the X axis spirally with a lead equal to the distance between the centers of the cores aligned on the aligning element, and an auxiliary roller contacting the wire spiral disposed parallel to the aligning element, the roller being connected to the coiling mechanism drive so that it rotates in a sense opposite to the direction of wire coiling.

The aligning element of this device can be made in the form of a roll with grooves cut therein at a spacing equal to the lead of the threading spiral, while the longitudinal guides for gripping the cores are disposed on the projections and in the recesses ofthe grooves so that the cores are arranged in two parallel lines at a spacing corresponding to the diameter of the threading spiral.

For threading the digit winding directly by a wire coiled into a spiral and for enabling the passage of this winding between the strings of cores, the aligning element of the device can be divided into sections, each having at least two longitudinal guides for gripping the cores and fitted with an individual drive for moving the sections to align the longitudinal guides of different sections.

This known device fails to thread the digit winding by a continuous wire returning from one row to another inside the matrix. Another disadvantage of this device is that the Y wires cannot be arranged in a matrix with spacings other than those of the cores on the aligning element. This disadvantage is particularly important when it is necessary to space the cores in a matrix at intervals less than the core diameter which is typical of modern computers.

Another known device for matrix wiring comprises a special mask which is an apertured sheet with the shape and size of the apertures repeating the shape and size of the cores. The apertures are locatedat places corre sponding to cores in the matrix and turned through precisely 45 towards its rows and lines in conformity with the matrix circuitry. One side of the mask has an adhesive coating so that each aperture becomes a cell with an adhesive-coated bottom for a core. The device also includes an electromagnetic shaking jig. The cores in the mask are threaded by hollow needles with Wires passing inside the needles.

This device has the following disadvantages: the masks and hollow needles are expensive elements calling for high precision in their manufacture. The apertures of the masks which are very difficult in manufacture for the smallest size of cores are not completely filled with cores on a shaking jig. Manual placing of cores into missed cells of the mask appreciably reduces the efficiency of the operation and causes damage both to the mask and to the adjacent cores. Hollow needles for small cores, for instance 0.3x .l7x0.06 mm in size, threaded with only two coordinate, wires, must have an outer diameter of about microns (taking into account the angular position of the core and the aperture space filled by the first wire), while the inner diameter of the needle must be such as to enable insertion through the needle of a wire at least 40 microns in diameter, which is practically next to impossible and with long wires quite unfeasible.

Removal of the adhesive coating and then the entire mask from the threaded matrix also results in damage to the cores, thus reducing the output considerably.

Wiring of a digit winding requires great concentration on the part of the worker and exerts heavy strain on the workers eyes.

The device can be used for making without soldering only matrices of very small storage capacity and is quite unsuitable for threading three wires through superminiature cores with an outer diameter of 0.4 mm or less.

At present, even where threading of Y and X wires is mechanized by some means, threading of ferrite matrices by a digit winding remains a manual operation, which is rendered still more difficult due to the fact that the cores to be threaded are disposed at 45 to the threading wire, which reduces the free space in the core aperture for insertion of the digit conductor approximately five times as compared with what can be achieved.

SUMMARY OF THE INVENTION An object of the present invention is to provide an apparatus for making memory storage matrices with a digit winding or with drive windings made up of two or a plurality of turns which will be simple and reliable in operation and which will minimize strain on the operators eyes when threading ferrite core matrices of large storage capacity and matrices composed of superminiature cores by eliminating soldered connections in a matrix.

The essence of the invention resides in that an apparatus for wiring memory storage matrices comprising Y coordinate wires strung through oores, wire fastening assemblies and a threading member for wiring the matrix by X coordinate conductors, which has, according to the invention, a threading mechanism for wiring a digit winding, including a movable positioning mechanism afiixed to a frame and disposed in direct proximity and transversely to the Y wires, and tension devices with clamps for fixing at least one X wire.

The positioning mechanism of the proposed apparatus can be made in the form of a moving roll with at least one longitudinal slot; the moving roll may also have grooves for the Y wires disposed along the roll in accordance with the arrangement of the Y wires in the matrix being wired.

The moving roll can be split into sections corresponding to places where the digit conductor passes over from one X wire to another inside the matrix, the sections being'provided with handles for turning these sections as required.

The positioning mechanism can be set at an angle to the X wires equal to the minimum angle at which the core can be disposed relative to the wire threading this core, the grooves for the Y wires being made as an at least one-coil spiral with a helix angle corresponding to the angle of the positioning mechanism, the positioning mechanism being connected to threaded bushings.

The positioning mechanism can also take the form of a vertically movable support provided with means for forcing the Y wires closer together, wherein the means for forcing the Y wires closer together can comprise two members moving towards each other and affixed to the vertically movable support, with teeth interspaced between the Y-wire bundles, the teeth of one member being disposed on one side of each Y-wire bundle, and the teeth of the other member being disposed on the other side of these bundles.

The means for forcing the Y wires closer together can also be made as tension springs disposed against each Y-wire bundle and having a plurality of turns equal to the number of the Y wires in the bundle, the spring ends being rigidly secured to the members moving towards each other at the edges of the wire bundles, one end of each spring being affixed to one member and the other end being affixed to the other member.

The vertically movable support can be positioned at an angle to the X wires in the matrix, the angle being equal to the minimum possible angle at which the core can be set relative to the wire threading this core.

The proposed apparatus simplifies the process of making memory storage matrices with digit windings, is suitable for wiring the second turn of the winding in threading matrices with two-turn coordinate windings, can be used for threading toroidal ferrite cores of any size arranged in any matrix formation by wires of any diameter, and makes it possible to wire digit windings in practically all known topological patterns, except for diagonal topology.

BRIEF DESCRIPTION OF THE DRAWINGS The invention can be more fully understood from the following detailed description of preferred embodiments thereof when read with reference to the accompanying drawing wherein:

FIG. 1 is a diagrammatic view of an apparatus for threading digit wires through matrix cores, according to the present invention;

FIG. 2 is a diagrammatic view of an apparatus with a moving roll, according to the present invention;

FIG. 3 is a diagrammatic view of an apparatus in which the moving roll is positioned at an angle to the wires and provided with guide grooves, according to the present invention;

FIG. 4 is a diagrammatic representation of an apparatus with a vertically movable support, according to the present invention;

FIG. 5 is a diagrammatic representation of an apparatus with a means for forcing the wires closer together made in the form of springs, according to the present invention;

FIG. 6 illustrates a core set at a minimum possible angle to the wire; and

FIG. 7 is a diagrammatic fragmentary view illustrating a matrix with complex row-to-row turns, according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The proposed apparatus for making memory storage matrices comprises Y coordinate wires I (FIG. 1) preliminarily threaded through cores 2, wire fastening assemblies 3 to which the wires are fastened with a small tension, and a threading member 4 for weaving the matrices 5 with X coordinate wires 6.

The apparatus also comprises a threading mechanism 7 for threading the cores 2 with a wire 8 used for making a digit winding 9 of the matrix 5. The threading mechanism 7 is positioned between the threading member 4 for weaving the matrices 5 with the X wires 6, and the matrix 5 being wired, and consists of a movable positioning mechanism 10 secured on a frame 1 1, and two tension devices I2 for applying tension to the X wires 6 with clamps 13 disposed at the ends of the same frame 11 for clamping the X wires 6.

The movable positioning mechanism 10 is disposed across the Y wires 1 on one side of these wires (preferably under the wires) and in direct proximity to the Y wires 1.

The tension devices 12 are made, for example, from rubber with clamps 13 in the form of a wire gripping notch on the rubber and are located along the axis of the movable positioning mechanism 10 in proximity to the plane of the Y wires 1.

The positioning mechanism 10 can be made as a moving roll I4 (FIG. 2) having at least one longitudinal slot 15 for the cores 2 threaded with the Y wires 1 and X wires 6.

The moving roll 14 can have grooves 16 (FIG. 3) for the Y wires I, provided on its surface and arranged along the roll 14 in the same pattern as that of the Y wires 1 in the matrix 5 being wired, i.e., at preset spacings both between the bundles 17 of the Y wires 1 and between individual wires inside each bundle 17.

When the matrices 5 are made with the digit conductor 9 passing from one X wire 6 to another X wire 6 inside the matrix 5 (row-to-row turns 18), the moving roll 14 can be split into sections I9, 20, 21, the boundaries between the sections coinciding with the places at which the conductors 9 passes from one wire to another (row-to-row turns 18). In this case, the sections 19, 20, 21 are provided with handles 22 for turning each section 19, 20, 21.

In the above embodiment of the invention, the positioning mechanism 10 (FIG. 1) is disposed at an angle 23 (FIG. 3) to the X wires 6 in the matrix 5, the angle 23 selected such as to be close as possible to the minimum possible angle at which the core can be positioned relative to the wire threading this core. The value of the angle 23 depends on the diameter of the Y wire a, the

inner diameter of the core 2 and the thickness (axial size) of the core 2.

In this embodiment, when the positioning mechanism is made in the form of a moving roll 14, the grooves 16 are helical-shaped (a multiple helix configuration is also possible) with the helix angle corresponding to the angle of the moving roll 14, which roll is in this case mounted in threaded bushings 24 with a mating thread.

In another embodiment of the threading mechanism 7 for threading the cores 2 with the wire 8 of the digit winding 9, the positioning mechanism 10 (FIG. 1) is a vertically movable support 25 (FIG. 4) assembled to the frame 11. The support 25 is a flat sheet disposed near the Y wires 1 without touching these wires and provided with a means for forcing the bundles 17 of the Y wires 1 closer together.

The means for forcing together the wire bundles 17 may comprise two members 26 and 27 moving towards each other which are affixed to the support 25 and disposed across the Y wires 1 with teeth 28 located on the sides of the wire bundles 17. The teeth 28 are disposed on the members 26, 27 so that on the member 26 they are secured on one side of each bundle 17 of the Y wires 1, and on the member 27 so that they come from the other side. The height of the teeth 28 must be less than the height of vertical movement of the support 25.

In still another embodiment, the means for forcing V i together the wire bundles 17 can be tension springs 29 (FIG. 5), one spring for each wire bundle 17, attached with their ends 30. to members 26 and 27 moving towards each other, similar to those in the above embodiment. The number of coils in each spring 29 must be equal to the number of Y wires 1 in the wire bundles 17. The middle coils of the springs 29 are located against the middle of each wire bundle 17, and all the ends 30 of the springs 29 positioned on one side of the wire bundles 17 are rigidly attached to one member 26, while all the other ends 30 are rigidly secured on the other member 27.

The diameter of the springs 29 must be less than the height of the vertical travel of the support 25 so as not to obstruct the movement of the cores 2 threaded by the X wire 6 along the Y wires 1.

In all the embodiments of the positioning mechanism 10 (FIG. 1) with the vertically movable support 25, the mechanism 10 can be set at the angle 23 (FIG. 6) to the Y wires 1, the angle 23 being equal to the minimum angle at which the core 2 can be set relative to the wire threading the core 2.

Now the operating principle of the apparatus for making memory storage matrices or memory units employing the third wire, a digit conductor, for threading through the matrix cores will be considered.

Prior to the wiring operation, the ferrite cores 2 are strung on each of the Y wires 1 (FIG. 1) in a number sufficient for the entire matrix or memory unit. and then the Y wires 1 are arranged on the apparatus and clamped in the fastening assemblies 3 with a slight tension. A wire is inserted into the X wire threading member 4.

Then, the X wire 6 is threaded through the outside core 2 on each Y wire 1, the threaded cores 2 are shifted together with the X wire 6 along the strung Y wires 1 and positioned in the vicinity of the moving roll 14 (FIG. 2) parallel to the roll, where upon the ends of the X wires 6 are secured in the clamps 12 of the tension devices 13.

In this way at least one X wire 6 threaded through the cores 2 is prepared to be threaded with the digit winding 9.

For wiring the digit winding 9 in the matrix 5 with the row-to-row turns 18, only one row of the threaded cores 2 is brought in this position. The circuits of the matrices 5, however, (FIG. 7) may need more complicated row-to-row turns 18 involving a larger number of the X wires 6, for which purpose a required number of the X wires 6 threaded through the cores 2 are shifted close to the moving roll 14 (FIG. 2).

Then, by rotating the roll 14 the slot 15 of the roll 14 is so adjusted that it faces the wires 6 with the cores and the cores 2 can freely enter the slot 15. The roll 14 is fixed in this position to prevent its rotation and moved along the Y wires 1 towards the threaded cores 2 until the threaded cores 2 set as required are engaged in the slot 15, Then the roll 14, still moved in the same direction, is released for rotation and the roll 14 rolls over the Y wires 1 and closes the circuit of the X wires 6 with the threaded cores 2 in the slot 15.

The slot 15 raises the cores 2 above the Y wires 1 and the X wires 6 allowing thereby easy translation of the conductor 8 of the digit winding 9 on one side of the X wires 6 and Y wires 1 passed through the apertures in the cores 2.

After that, two sections of the wire 8 (FIG. 3) are taken, the length of the wires being sufficient for wiring both digit windings 9 in the matrix 5, and the cores 2 engaged in the slot 15 are threaded with these wires starting from the center of the roll 14.

One of the two wires 8 is drawn. through the cores 2 strung on one middle bundle 17 of the Y wires 1, and the other wire 8, through the cores 2 of the other middle bundle 17 of these wires. The threading operation must proceed from the center of the roll 14 towards its ends, the cores 2 of one X wire 6 being threaded with one end of the wire 8, and the cores 2 of the adjacent wire with the other end of the same wire 8. After that, the cores 2 of the outside wire bundles 17 are thread by the transposed wires 8, that is, the end of the wire 8 which has been previously used for threading the cores 2 strung on one X wire 6 in the middle bundle 17 is now employed to thread the cores 2 of the adjacent X wire 6 in the outside wire bundles 17.

The roll 14 is shifted along the Y wires 1 towards the threading member 4 for threading the X wires 6 and both X wires 6 with the cores 2 threaded with the Y wires 1, X wires 6 and the wires 8 will be on the side of the matrix 5. The cores with all the wires (Y wires 1, X wires 6 and wires 8) passed through them are translated along the Y wires 1 and set into position in the matrix 5. The wires 8 of the digit winding 9 are pulled up from the center of the matrix 5 sidewards and threading of the next row of the cores 2 begins.

The cores 2 are threaded with the next two X wires 6, and the digit winding 9 is wired through the cores 2 by the ends of the same wires 8 in the same manner with the only difference being that the wires 8 are now threaded starting from the ends of the roll 14 towards its center. Thus, the digit winding is wired through the cores 2 of four pairs of the X wires 6, each odd pair being threaded with the digit winding 9 from the center of the matrix 5 sidewards, and each even pair, from the sides towards the center of the matrix. The cores 2 of the fifth pair of the X wires 6 are threaded with the wires 8 of the digit winding 9 after transposing the ends of the wires 8 so that the digit windings 9 of the right and left sides of the matrix change places.

Further threading is carried out as described above.

When using the moving roll M with the grooves 116 for accepting the Y wires 1, a preliminary operation before threading consists in laying the Y wires ll into the grooves 16 in line with the wire bundles 117 in the matrix 5. The Y wires ll between the threading member 4; and the roll 14 may not run parallel to each other, however, in the zone of the matrix 5, the Y wires l remain parallel, thus permitting proper accomplishment of all the curves of the digit winding 9.

If use made of the moving roll 14 divided into the sections 19, 20, 21 and provided with the handles 22, first the slot 15 is aligned by the handle 22 so as to form one straight line in all the sections 19, and 21. Then, the roll 14 is handled in manner similar to that of the roll without sections described above with the only difference being that before threading the cores 2 with the wires 8, one X wire 6 in the outside sections 19 and 21 is aligned by means of the handle 22 with the other X wire 6 in the middle section 20, and then vice versa, i.e., the other X wire 6 in the sections 19 and 21 is aligned with the first X wire 6 of the section 20. The wire 8 is threaded through the cores 2 arranged in one straight line in two wire bundles 17 at a time.

When the positioning mechanism 10 is set at the angle 23 to the X wires 6 in the matrix 5 and when the helical grooves 16 in the positioning mechanism and the threaded bushings 24 are used, the cores 2 are disposed normal to the X wire 6 in the slot 15. This provides for a maximum free space in the apertures of the cores 2 for the threading wire 8.

When using the positioning mechanism 10 made as the vertically movable support 25 (FIG. 4) having the means for forcing the bundles 17 of the Y wires 1 closer together, before threading the wire 80f the digit winding 9 through the cores 2, the cores 2 are pushed against the adjacent Y wires 1, and turned through a maximum possible angle to the Y wires 1 where on they are strung so as to form a short tube composed of the rigidly fastened cores 2.

For advancing the threaded cores 2, the support 25 is lowered.

When the means for forcing the bundles l7 of the Y wires 1 closer together comprises the members 26, 27 moving towards each other, the cores 2 are pressed by the teeth under the action of the outside Y wires 1 in the bundles 17 moving in side these bundles 17.

The compressive force is transmitted to the central Y wires 1 in the wire bundles 17 directly through the cores 2 arranged in the slot 15.

If the means for forcing the wires closer together is made in the form of the tension springs 30 (FIG. 5) with the ends 31 secured on the members 26 and 27 moving towards each other, the internally located cores 2 in the bundles 17 of the Y wires 1 are forced together by the middle coils of the spring 30. r

The use of the vertically movable support 25 set at the angle 23 to the X wires 6 in the matrix 5 provides optimum conditions for the translation of the threading wire 8 through the apertures of the cores 2, which, together with a decrease in the length of the threaded bundles l7, simplifies threading of the digit winding 9.

In all the embodiments of the invention, the sequence of operations in threading the digit windings 9, i.e., passing of the threading wires 8 through the cores 2 of the matrix 5, remains as stated above.

The proposed apparatus minimizes strain on the operators eyes in making memory storage matrices, improves the quality of the matrices, is easy in manufacture and reliable in service.

What is claimed is:

H. An apparatus for making memory storage matrices, comprising: a plurality of cores; Y coordinate wires threaded through said cores; wire fastening assemblies for said Y coordinate wires; X coordinate wires; a threading member for threading said matrices with said X coordinate wire; digit winding wires; and a threading mechanism for threading said digit winding wires through said cores of said matrices, said threading mechanism comprising a frame, a movable positioning mechanism mounted on said frame and disposed in direct proximity and transversely to said Y coordinate wires, and tension devices having clamps for fixing at least one of said X coordinate wires.

2. An apparatus as claimed in claim 1, wherein said movable positioning mechanism comprises a moving roll having at least one longitudinal slot.

3. An apparatus as claimed in claim 2, wherein said moving roll has grooves for said Y coordinate wires, said Y coordinate wires being arranged in bundles with sides, said bundles being positioned along said moving roll in accordance with the arrangement of said bundles of said Y coordinate wires in said matrix being wired.

4. An apparatus as claimed in claim 2, wherein said matrix is made having row-to-row turns of said digit winding as it curves from one said X coordinate wire to another, said moving roll being split into sections corresponding to said row-to-row turns of said digit winding between said X coordinate wires inside said matrix, said sections being provided with handles for their rotatron.

5. An apparatus as claimed in claim 4, further including threaded bushings, said movable positioning mechanism being connected to said bushings and disposed at an angle to said X coordinate wires in said matrix, said angle being equal to the minimum angle at which said core can be set with respect to said Y coordinate wire threaded through said core, said grooves for gripping said Y coordinate wires being made in the form of an at least one-coil helix with the helix angle being equal to said angle of said positioning mechanism.

6. An apparatus as claimed in claim 1, wherein said positioning mechanism comprises a vertically movable support having means for forcing bundles of said Y coordinate wires closer together.

7. An apparatus as claimed in claim 6, wherein said means for forcing said bundles of said Y coordinate wires closer together comprises two members moving towards each other and secured to said vertically movable support, said two members moving towards each other having teeth interspaced between said bundles of said Y coordinate wires, said teeth on one of said two members being disposed on one side of each said bundle of said Y coordinate wires, and said teeth on the other of said two members being disposed on the other side of said bundles.

to one of said two members, and the other end being affixed to other said two members.

9. An apparatus as claimed in claim 6, wherein said vertically movable support is disposed at an angle to said X coordinate Wires in said matrix, said angle corresponding to the minimum angle at which said core can be set with respect to said Y coordinate wire threaded

Claims (9)

1. An apparatus for making memory storage matrices, comprising: a plurality of cores; Y coordinate wires threaded through said cores; wire fastening assemblies for said Y coordinate wires; X coordinate wires; a threading member for threading said matrices with said X coordinate wire; digit winding wires; and a threading mechanism for threading said digit winding wires through said cores of said matrices, said threading mechanism comprising a frame, a movable positioning mechanism mounted on said frame and disposed in direct proximity and transversely to said Y coordinate wires, and tension devices having clamps for fixing at least one of said X coordinate wires.

2. An apparatus as claimed in claim 1, wherein said movable positioning mechanism comprises a moving roll having at least one longitudinal slot.

3. An apparatus as claimed in claim 2, wherein said moving roll has grooves for said Y coordinate wires, said Y coordinate wires being arranged in bundles with sides, said bundles being positioned along said moving roll in accordance with the arrangement of said bundles of said Y coordinate wires in said matrix being wired.

4. An apparatus as claimed in claim 2, wherein said matrix is made having row-to-row turns of said digit winding as it curves from one said X coordinate wire to another, said moving roll being split into sections corresponding to said row-to-row turns of said digit winding between said X coordinate wires inside said matrix, said sections being provided with handles for their rotation.

5. An apparatus as claimed in claim 4, further including threaded bushings, said movable positioning mechanism being connected to said bushings and disposed at an angle to said X coordinate wires in said matrix, said angle being equal to the minimum angle at which said core can be set with respect to said Y coordinate wire threaded through said core, said grooves for gripping said Y coordinate wires being made in the form of an at least one-coil helix with the helix angle being equal to said angle of said positioning mechanism.

6. An apparatus as claimed in claim 1, wherein said positioning mechanism comprises a vertically movable support having means for forcing bundles of said Y coordinate wires closer together.

7. An apparatus as claimed in claim 6, wherein said means for forcing said bundles of said Y coordinate wires closer together comprises two members moving towards each other and secured to said vertically movable support, said two members moving towards each other having teeth interspaced between said bundles of said Y coordinate wires, said teeth on one of said two members being disposed on one side of each said bundle of said Y coordinate wires, and said teeth on the other of said two members being disposed on the other side of said bundles.

8. An apparatus as claimed in claim 6, wherein said means for forcing said bundles of said Y coordinate wires closer together comprises back-moving springs having ends, said springs being disposed against said bundles of said Y coordinate wires and having plurality of turns equal to the number of said Y coordinate wires in said bundles of said Y coordinate wires, said ends of said springs being rigidly connected to said members moving towards each other along the edges of said bundles, one of said ends of each said spring being affixed to one of said two members, and the other end being affixed to other said two members.

9. An apparatus as claimed in claim 6, wherein said vertically movable support is disposed at an angle to said X coordinate wires in said matrix, said angle corresponding to the minimum angle at which said core can be set with respect to said Y coordinate wire threaded through said core.

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