US1678325A - Arrangement for directly reproducing on fabric the required pattern - Google Patents

Description

- July 24,1928.

E. A. BUTIN ET AL ARRANGEMENT FOR DIRECTLY REPRODUCING ON FABRIC TEE REQUIRED PATTERN Fil ed Aug. :5, 1925 2 Sheets-Sheet 1 PIC-5.2.

July 24, 1928. 1,678,325

A. BUTIN ET AL ARRANGEMENT FOR DIRECTLY REPRODUCING 0N FABRICTHE-REQUIRED PATTERN Filed Aug. 5, 1925 2 Sheets-Sheet 2 III/III. V III/III Wham; fz zVel wow Patented July 24, 1928.

UNITED STATES PATENT OFFICE.

EMILE ACHILLE IBU'IIN AND LOUIS GIRARD, OF LYON, FRANCE.

ARRANGEMENT FOR DIRECTLY REPRODUCING ON FABRIC THE RE QUIRED PATTERN.

Application filed August 3, 1925, Serial No.47,952, and in France August 7, 1924.

This invention relates to warp shedding mechanism for looms of the type employing jac uard needles, each of which is operated by an electric solenoidthrough contacts moving over a pattern drum having insulating and conducting portions thereon. The object of this invention is to provide an electrlcal'ly operated mechanism, which can be applied to existing looms upon the removal 'of the usual pattern card.

According to one object of the invention,

each jacquard needle is operated by a swinging member through a spring loaded sliding rod, -the reverse end of which is bent to form a hook to be engaged by a forked lever controlled by the armature of a solenoid when this latter is energized by the circuit being completed through one or more feelers contacting with the pattern painted in conducting material upon an insulating drum or band. capable of occupying one of two or three positions.

According to a second object of the invention, the warp shedding'mechanism for looms is adapted for weavin patterned-velveteens and at this efiect, t e solenoid circuit is controlled by two needles of unequal length, ,whose oints of contact are separated in'i the cylinder by the angle rotated at each movement of the pattern drum, the c finder being ca able 0 occupying one of three positions, t e first in which no contact is made, the second in which contact is constructed in accordance with our invention showing the hook operating mechanism and the pattern cylinder of the design in one position.

Fi re 2 is a similar view of the same no showing the hook operating mechanism and thepattern cylinder in another position.

Figure 3 is a similar view of the same showing the hook operating mechanism and p the pattern cylinder in another position. Figures 4, 5, 6 and 7 are diagrams illusvis made when the member a is travelling in '6 on the end of the rod 6 and in the direction' of the arrow 0 the engagement takes place directly by the member a bearing against a shoulder on the rod 6.

In its backward and forward movement the rod 1) comes in contact with projections forming stops on a lever e pivoted at e. When the movement is taking place in the direction of the arrow 0 the lever e is forced against the electromagnet f forming part of an electric circuit hereafter described and remains in contact if a current is flowing, if not'it falls away by its own Weight. 7:.

If the solenoid is energized when the member a moving in the direction of the arrow 0 presses the needle-b against the lever e, this latter remains in contact with the solenoid when the member a commences to move in the direction of the arrow 0 and the hooked end of this .lever e prevents the needle 6 from travelling back with the member a, the member a continuing its movement and compressing the spring a3. (Fig. 3.) The needle h of the hook it is therefore not ushed over and a pile thread is brought to t e surface.

If, however, the solenoid is not energized the lever e falls away therefrom owing to its own weight when the member a starts to travel in the direction of the arrow 0 and the needle H of the hook it is pushed by the needle bout of the way of the grifie bar and no ile thread is brought to the surface.

he electric circuit of the solenoid comprises a cylinder 9 of conducting materialconnected to the frame, and on which is represented the pattern as described hereafter.- w y Velveteens are generally woven .on six staves and therefore after every six picks of the shuttle, and thus after each complete cycle. formed in each of two pieces of fabric this cylinder rotates a predetermined amount. It also undergoesa vertical move ment at right angles to its axis.

The cylinder 9 is contacted by a double feeler z for each jacquard hook it the two needles 2, a? lying on two different tangents,

of the drum, and this is effected set at the angle rotated by the cylinder every six picks, for example, and approximatel vertically above the axis g of the cylin er 9 Of these two needles one i is longer than the other 2' The double feeleris necessary for weaving velveteens to ensure that parts at the end of a pattern are not missed, and for this purpose two additional picks are inserted, after the feeler 2' has left the patterned ortipln y t e feeler i which is still in contact therewith.

One terminal of solenoid f is thus connected to a double feeler z and through it to the machine frame and the other to the second pole of a source of electric supply not shown in the drawings.

The pattern cylinder or feeler i being in contact with'a conducting or pattern portion 9 while the feeler i is in contact with insulating portion 9 current flows through the magnet f and the lever e is attracted by and held by the magnet and engages and holds the rod 6 as in Figure 2, allowing the jacquard needle h to be operated upon by the griife bar andpile threads to be brought to the surface. .The pattern drum remains in this position for two picks and then drops to the middle position in which only the feeler z" is in Contact with the drum but still on a pattern portion 9 so that current continues to flow while a further four picks. are inserted, thus coinp leting six picks of pile for the pattern.

he drum then drops to its lowest position in which both feelers i i are out of contact therewith and is rotated through a predetermined angle, to bring the insulating portion into position and again raised to its highest position.

As the weave changes from forming the pattern pile to forming ground work solely inhe operating mechanism is disposed as folows:

The pattern cylinder or drum g is at its highest position, the feeler 2' in contact with the insulating portion 9 but the feeler z? is in contact with the pattern portion 9, current therefore still flowing through the mag net while a further two picks are inserted. The pattern cylinder, then drops to the middle position, the feeler 2' remaining in contact with the insulating portion, but the shorter feeler z? coming out of contact with the attern portion,'therefore current ceases to ow through the ma et and'the pile is not brought" to the sur ace, and a further four picks are inserted. The groundwork is then woven without pattern and the pile thread left floating beneath;

The drum a ain drops to its lowest position in which oth feelers z", i are out of contact therewith and is rotated through a predetermined angle, being then raised to circuit I when said six icks made.

highest position and a further cycle of T e ground work is then woven without pattern and the pile thread left floating beneath, the positions of the various operating members being as follows: The drum or cylinder 9 is in the raised position and the feels i fare in contact with the insulated portion g thereon and no current flows through the solenoid, the pile'pattern thread that again no current fiows'through the soledrum 9 is at its. highest position as shown in Figure 3, the

noid. The cylinder remains in this position while. a further four picks are inserted. The drum then drops to its lowest position in which both feelers 2' 2' are out of contact therewith (as in Figure 2) and is rotated through a predetermined angle, being then raised to its highest position and a further cycle of six picks made. v

The invention has begn described with reference to a loom for weaving velours but this arrangement may be equally well applied to single fabric looms in this case the feeler is single, the cylinder rotates a suitable amount member when the latter is in another position, an electric circuit including an electromagnet with which said armature is assoc1 ated, a circuit closer for said circuit includmg a' contact point, and a movable pattern carrying element provided with a pattern in card form, and an insulating background therefor, said contact point closing said therewith.

2. Apparatus for tracing patterns for pattern comesfin contact.

' Jacquard looms comprising an'oscillating element, a jacquard needle controlling sliding element arranged. for movement corre-' sponding to that 0 said oscillating. element, a pivotally mounted lever having an armaing providedwith means for engagement by said sliding member when the latter is in one posltion'and for release by said sliding mem er when the latter is in another posi- 1 25 ture, said lever and said sliding element beand provided at its rear end with a hook arm, a pivotall mounted lever having an armature, said ever being provided with a I bifurcated portion in which the booked and of said sliding element operates for engagement of said lever when said member is in one position and for release of said lever when said member is in another position, an electric circuit including-an electromagnet with which said armature is associated, a circuit closer for said circuit includin a pair of spaced contact polnts of different engths,

' and a movable pattern carrying element provided with a attern in card form, and an insulatin bac ground therefor, said contact points c osing said circuit when said pattern comes in contact therewith.

4. Apparatus for tracing patterns for Jacquard looms comprising an oscillating element, a jacquard needle controlling sliding-element arran ed for movement correspondin to that 0 said oscillating element,

a pivota ly mounted lever having an armature, said lever and said sliding element being provided with means for engagement by said sliding member when the latter isin one osition and for release'bypaid sliding mem er when the latter is in another position, an electric circuit including an electromagnet with which said armature is associated, a circuit closer for said circuit ineluding a pair of spaced contact points of 7 different lengths, and a pattern carrying element provided with a pattern in card form comprising electrically conducting por-- tions and electrically insulated portions, said contact points closing said circuit when said patterns comes in contact therewith.

'5. Apparatus for tracing patterns 'for 3 Jacquard looms comprising an oscillating element, a jacquard needle controlling sliding element arran ed for movement correspondin to that 0 said oscillating element, a pivota ly mounted lever having an armature, said lever and said sliding element being provided with means for engagement by said sliding member when the latter is in one.

osition and for release by said sliding memer when the latter is in another position, an electric circuit including anelectromagnet with which said armature is associated, a circuit closer for. said circuit including a pair of spaced contact points of difierent lengths, and a-pattern carryin element provided with a pattern in card orm comprising electricall conducting portions and electrically insu ated rtions, said contact points closing said circuit when said pattern comes in contact therewith, said pattern carrying element comprising a cylinder arranged for step by step rotation and also for movement toward and from said contact points, and the space between said contact points being equal tothe angle of each partially rotative movement of said 0 linder.

EMILE ACHILLE LOUIS GIRARD.

UTIN.

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