FORM 2
THE PATENT ACT 1970
(39 of 1970)
&
The Patents Rules, 2003
COMPLETE SPECIFICATION
(See section 10 and rule 13)
1 TITLE OF THE INVENTION
ADVANCED ELECTRONIC JACQUARD MACHINE FOR TEXTILE WEAVING LOOM AND METHOD THEREOF

DESCRIPTION
TECHNICAL FIELD
This invention pertains to jacquard machine for textile weaving loom. Especially it is related to electronic jacquard machine wherein technical advancements are invented in the various parts of jacquard machine such as main shaft drive mechanism, eccentric cam and wheel mechanism, swinging arm mechanism, pull rod assembly, knife lifting mechanism, electronic harness selection device (electronic module) mounting system, leno thread lifting mechanism and machine setting & calibration system.
BACKGROUND
Food, cloth and shelter are some of the basic requirements of the civilized human being. A cloth that we wear has to pass through multiple processes and machines. Fabric is made from the fibres by processing the fibres through multiple processes such as spinning, weaving and processing. Weaving is the process wherein one set threads are arranged in longitudinal direction which is called warp and another set of yarns called as weft which are passed in traverse direction through the sheds formed by warp yarns.
Shedding, picking and beating are three basic mechanisms in any weaving machine. Shedding means formation of shed wherein one set of warp yarns are lifted upward and another set of warp yarns are pulled downward. Picking is the mechanism wherein the weft yarns are inserted through the formed shed. Beating is the process wherein

newly inserted weft yarn is pushed into the cloth fell i.e. at the edge of the already woven fabric.
Shedding mechanism is the mechanism which decides the design of fabric. The yarn which is pulled upward during shedding mechanism comes on the surface of the fabric. Heald frames are used to give the movement to the warp yarns. The heald wires are mounted on the heald frames, heald wires has eyelet at the centre; warp yarn is passed through the eyelet of the heald wire. The movement of the heald frame decides the lifting and lowering of the yarn associated with the respective heald frame.
Lifting and lowering of the heald frames are decided by the drive mechanism of the heald frame. In case of plain fabric wherein two sets of yarn are woven by alternate lifting and lowering of the heald frame, in this case two heald frames are sufficient, however for practical ease four heald frames are used; shedding tappets are used for lifting and lowering of two or four heald frame.
In case of design such as twill and sateen, multiple shed formations is required, for this purpose dobby shedding mechanism is used. Dobby with average capacity can handle 12 to 24 heald frames, this helps to weave little difficult fabric pattern.
In case of complicated design such as design of flower or peacock, the jacquard machine is used for shed formation. Jacquard is the machine which is usually mounted above the weaving machine and it does not have heald frames, but has heald wires (harness). Heald wires has eyelet at the centre. Warp yarns are passed through the heald wires.

Jacquard has a mechanism which facilitates the lifting and lowering of the individual heald wire.
Many researchers including the textile machine manufacturers were working in this field where they are trying to develop the jacquard with higher speed, higher efficiency and easy design change; they have developed various techniques to achieve the desired goal. Following are some of the devices available in this field:
Document US3504711A discloses jacquard machine for weaving loom, wherein warp yarn is passed through heddles. Hooks are connected to heddles. Knives are used for raising selected hooks and heddles. Selection of needle to be raised is decided by cylinder and card mechanism, it comprises a plurality of card chains each containing a plurality of perforated cards wherein cards are perforated depends on the design to be woven on fabric; these cards are made up of cardboard material. One card contains lifting pattern for one shed/weft. As number of shed pattern increases, the number of card increases. This type of jacquard machine requires huge space to mount the punched cards on the loom; the main advantage of this type of jacquard is that, the style/design change is time consuming; to change the design of the fabric the user has to make new set of punched cards. Further, the working speed of this type of jacquard is very slow.
Document CN211227525U discloses electronic jacquard wherein electronic jacquard harness selection devices are used. Electronic jacquard harness selection device comprises electromagnetic mechanism to engage the hook; said device is connected to

microprocessor based controller. The design is uploaded in the controller; based on the design the particular electromagnets gets activated which engage the needle hook in upper position, finally this results in the lifting of particular warp yarn. This type of Harness selection devices are much sophisticated and user friendly.
Document CN209412411U discloses electronic jacquard machine conjugate cam driving mechanism. Electronic jacquard harness selection devices are used in this jacquard. Machine comprises cam box, swinging arm and link mechanism to drive the knife. Two conjugate cams and rocking follower is used to give the drive to the knife. This driving mechanism has multiple disadvantages such as frequent maintenance, difficulty in maintenance, missing design, high level of noise and vibration.
The techniques disclosed in the prior art are not successful due to various shortcomings in their techniques. The present invention describes the electronic jacquard machine wherein technical advancements are invented in the various parts of jacquard machine such as main shaft drive mechanism, eccentric cam and wheel mechanism, swinging arm mechanism, pull rod assembly, knife lifting mechanism, mounting system for harness/needle lifting electronic module, machine setting & calibration system and leno thread lifting mechanism. The technical advancement of present invention enhances the performance of the jacquard machine by reducing the noise, lowering the maintenance, lowering the breakdowns, decreasing the design miss, easy maintenance and easy resetting & calibration. The

present invention is simple, cost effective, efficient and durable in comparison with the technique available in the prior art.
SUMMARY
The following simplified summary provides a basic understanding of some aspects of the claimed subject matter. This summary is not an extensive overview, and is not intended to identify key/critical elements or to delineate the scope of the claimed subject matter. Its purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented below.
Invention is related to Jacquard machine for textile weaving loom which comprises a main shaft, a first eccentric wheel mechanism, a second eccentric wheel mechanisms, a swing arm assembly, a pull rod assembly, a knife drive mechanism, a knife, an electronic harness selection device, a electronic harness selection device mounting mechanism; a leno mechanism and a proximity sensor mechanism.
The main shaft, two eccentric wheel mechanisms, four swing arm assemblies, eight pull rod assemblies, four knife drive mechanisms, a harness selection device mounting mechanism, two leno mechanisms and one proximity sensor mechanism are connected mechanically. The main shaft of jacquard machine is mounted on a bottom frame with help of a first side frame, a second side frame and a main shaft mounting mechanism; two parts of the main shaft are joined with the help of the shaft joint, main shaft of the jacquard is connected to a crank shaft of weaving loom by transmission means such as chain

sprocket drive; the knife drive mechanisms are connected with the swing arm assemblies through pull rod assemblies.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of the jacquard machine.
FIG. 2A is a right hand side view of the jacquard machine connected to crank shaft of the weaving loom.
FIG. 2B is a front view of the jacquard machine connected to crank shaft of the weaving loom.
FIG. 3 is an exploded view of the jacquard machine.
FIG. 4 is a front view of the jacquard machine.
FIG. 5 is a back view of the jacquard machine.
FIG. 6 is a top view of the jacquard machine.
FIG. 7A is a left hand side view of the jacquard machine at Zero degree position.
FIG. 7B is a right hand side view of the jacquard machine at Zero degree position.
FIG. 8A is a left hand side view of the jacquard machine at 90 degree position.
FIG. 8B is a right hand side view of the jacquard machine at 90 degree position.

FIG. 9A is a left hand side view of the jacquard machine at 180 degree position.
FIG. 9B is a right hand side view of the jacquard machine at 180 degree position.
FIG. 10A is a left hand side view of the jacquard machine at 270 degree position.
FIG. 1 OB is a right hand side view of the jacquard machine at 270 degree position.
FIG. 11A is an exploded view of the first eccentric wheel mechanism.
FIG. 1 IB is an exploded view of the second eccentric wheel mechanism.
FIG. 12A is Top view of the cam
FIG. 12B is prospective view of the cam
FIG. 12C is front view of the cam
FIG. 12D is back view of the cam
FIG. 13 is an exploded view of the swing arm assembly
FIG. 14 is an exploded view of the pull rod assembly
FIG. 15A is an exploded view of the knife drive mechanism
FIG. 15B is a perspective view of the knife
FIG. 15C is a cross-sectional view of the knife

FIG. 16A is an exploded view of the electronic harness selection device mounting mechanism
FIG. 16B is an exploded view of the electronic harness selection device mounted on electronic harness selection device mounting mechanism
FIG. 16C is a perspective view of the electronic harness selection device mounting mechanism without CL card.
FIG. 16D is a perspective view of the electronic harness selection device mounting mechanism with CL card.
FIG. 17A is a cross-sectional view of the shaft joint
FIG. 17B is a perspective view of the shaft joint
FIG. 18 is schematic view of electronic connection
DETAILED DESCRIPTION
Various embodiment(s) of the invention will now be described in more detail with reference to the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiment(s) set forth herein.
Terms such as "left side", "right side", "front side" and "back side" are used in the specification. The reference of these terms can be made through the drawings, especially Fig. (1), wherein arrow (A) indicates the right side, arrow (B) indicates the left side, arrow (C) indicates the

front side and arrow (D) indicates the back side. Specification is drafted in such a way that, the person is standing at point arrow (C) facing towards the machine and first chain sprocket (3) is at the right hand side of the person.
Figure 1-18 illustrates the jacquard machine for textile weaving loom. The jacquard machine specifically related to the electronic jacquard machine (1). Jacquard machine (1) is installed on the weaving loom (not shown in the drawing) in over head manner. Drive to the jacquard machine (1) is supplied from the crank shaft (5) of the loom. Main shaft (2) of the jacquard is connected to the crank shaft (5) of weaving loom by transmission means such as chain sprocket drive. Main shaft (2) of the jacquard (1) drives the first eccentric wheel mechanism (10) and second eccentric wheel mechanism (11). These eccentric wheel mechanisms (10 and 11) drives the knife drive mechanism (33, 34, 35 and 36; Refer Figure-8A and 8B). Electronic harness selection devices (Referred as "module (175")) are installed on the Electronic harness selection device mounting mechanism (41; Refer Figure 16D and 1). Knifes (75) are passed between two facing modules (175). Harness (81) of the module (175) is connected to heald wire; warp yarn is passed through the heald eye of the heald wire. Knife drive mechanism (33, 34, 35 and 36) moves knifes (75) in vertically upward and downward motion. As per the design fed in to the control system of the jacquard, modules (175) engages the module hooks lifted by the knife which result in the lifting of harness (81) which finally results in lifting of warp yarn and formation of shed for insertion of weft yarn.

Figure 2A illustrates the chain drive mechanism to drive the main shaft (2) of the jacquard (1). First chain sprocket (3) is installed at one end of the main shaft (2) of the jacquard machine. Second chain sprocket (4) is installed at one end of the crank shaft (5) of the weaving loom. First chain sprocket (3) is mechanically connected to the second chain sprocket (4) by means of chain (176). First chain tensioner (45) is installed on one side of the chain (176) and second chain tensioner (46) is installed on another side of the chain (176) to adjust the tension in the chain (176). Ratio of tooth on the first chain sprocket (3) to tooth on second chain sprocket (4) is 2:1. In preferred embodiment, 38 tooth sprocket is used as a first chain sprocket (3) and 19 tooth sprocket is used as a second chain sprocket (4). In another preferred embodiment, 32 tooth sprocket is used as first chain sprocket (3) and 16 tooth sprocket is used as second chain sprocket
(4).
Refer Figure-3 and 4; components of the jacquard machine (1) are installed on bottom frame (6). First side frame (14) and second side frame (15) are mounted on the bottom frame (6) with the help of the frame fixing means (82) such as nut and bolts situated at the bottom side of the frames (14, 15). First side frame (14) and second side frame (15) are connected with each other with the help of frame fixing rods (42, 43, 44, 83 and 85).
Main shaft (2) is mounted at the bottom level of machine with the help of first main shaft mounting mechanism (7), second main shaft mounting mechanism (86) and third main shaft mounting mechanism

(87). First main shaft mounting mechanism (7) is provided at one end of the bottom frame (6). Second main shaft mounting mechanism (86) is provided at the bottom of first side frame (14). Third main shaft mounting mechanism (87) is provided at the bottom of second side frame (15). Main shaft mounting mechanisms (7, 86 and 87) are bearings. In one of the preferred embodiment first main shaft mounting mechanism (7) is a ball bearing especially UCFC 208; second main shaft mounting mechanism (86) and third main shaft mounting mechanism (87) are roller bearing especially NJ 2209.
Figure 11A to 17B illustrates the sub-assemblies of the jacquard machine (1) in detail.
Figure 11A illustrates the first eccentric wheel mechanism (10) in detail. Main shaft (2) is inserted through the hole (98) of the cam (89). Radial bearing (90) is mounted on the periphery of the Cam (89). Radial bearing (90) is ball bearing, preferably 6024 ZZ bearing. Cam
(89) along with the radial bearing (90) is inserted in the big hole (100) of the big lever (88). Lever pin (98) is surrounded by the bearing (97). Bearing (97) is roller bearing preferably NUP 2305 bearing. Lever pin
(90) surrounded by bearing (97) is inserted in the small hole (101) of the big lever (88). Narrow end of the first connecting plate (91) is placed on one side of the small hole (101) of the big lever (88); washer (94) is placed between first connecting plate (91) and bearing (97). Narrow end of the second connecting plate (92) is placed on another side of the small hole (101) of the big lever (88); washer (95) is placed between second connecting plate (92) and bearing (97).

Narrow end of the connecting plates (91 and 92) is fixed by inserting screws in the holes of lever pin (98), especially alien screws are used for fixing. Lever joint block (93) is fixed between broader ends of the two connecting plates (91 and 92) by inserting screw in the five holes provided on the broader end of the connecting plates (91 and 92) and lever joint block (93), preferably alien screws are used for fixing. Hole at the centre of the lever joint block (93) and hole at the centre of broader end of the second connecting plate (92) facilities the insertion and fixing of top drive shaft (16) (refer figure-3). In one of the preferred embodiment length of big lever (88) is around 797 mm.
Figure 1 IB illustrates the second eccentric wheel mechanism (11) in detail. Main shaft (2) is inserted through the hole (99) of the cam (65). Radial bearing (66) is mounted on the periphery of the Cam (65). Radial bearing (66) is ball bearing, preferably 6024 ZZ bearing. Cam (65) along with the radial bearing (66) is inserted in the big hole (102) of the small lever (67). Lever pin (74) is surrounded by the bearing (73). Bearing (73) is roller bearing preferably NUP 2305 bearing. Lever pin (74) surrounded by bearing (73) is inserted in the small hole (103) of the small lever (67). Narrow end of the first connecting plate (68) is placed on one side of the small hole (103) of the small lever (67); washer (71) is placed between first connecting plate (68) and bearing (73). Narrow end of the second connecting plate (69) is placed on another side of the small hole (103) of the small lever (67); washer (72) is placed between second connecting plate (69) and bearing (73). Narrow end of the connecting plates (68 and 69) is fixed by inserting screws in the holes of lever pin (74), especially alien screws are used

for fixing. Lever joint block (70) is fixed between broader ends of the two connecting plates (68 and 69) by inserting screw in the five holes provided on the broader end of the connecting plates (68 and 69) and lever joint block (70), preferably alien screws are used for fixing. Hole at the centre of the lever joint block (70) and hole at the centre of broader end of the second connecting plate (69) facilities the insertion and fixing of bottom drive shaft (17) (refer figure-3). In one of the preferred embodiment length of small lever (67) is around 692 mm.
Figure 12A, 12B, 12C and 12D illustrates the design and construction of the cam (65 and 89) in detail. Fixing clip is mounted on the cylindrical projection (104) on the cam (65, 89) to firmly fix the cam (65 and 89) on main shaft (2). Figure 12C illustrates the design of the cam, the offset (C) between the axis of main shaft and central axis of cam (65 and 89) is l/4th of diameter of the cam (65 and 89). Least radial dimension (B) of cam (65 and 89) is l/3rd of the greatest radial dimension (A) of the cam (65 and 89). In the preferred embodiment, diameter (D) of the cam is about 120 mm, greatest radial dimension (A) is about 90 mm, least radial dimension (B) is about 30 mm and the offset (C) between the axis of main shaft (2) and axis of cam is about 30 mm. Dimensions of cam (89) installed in first eccentric wheel mechanism (10) and cam (65) installed in second eccentric wheel mechanism (11) are same.
Figure 13 illustrates construction of swing arm assembly (105), it comprises front swing arm (47) and back swing arm (48) and joint block (49). Front swing arm (47) has hole (107) at one end to facilitate

the insertion of the top drive shaft (16) or bottom drive shaft (17); at other end of the front swing arm (47), the slot (109) is provided to mount pull rod assembly (30, 33, 110 and 112; refer Figure-7A and 7B). Back swing arm (48) has hole (106) at one end to facilitate the insertion of the top drive shaft (16) or bottom drive shaft (17); at other end of the back swing arm (48), the slot (108) is provided to mount pull rod assembly (31, 32, 111 and 113; Refer Figure 7A and 7B). Multiple small holes around hole (107) of front swing arm (47), around hole (106) of back swing arm (48) and around central hole of joint block (49) are provided to insert screw for fixation. In preferred embodiment alien screws are used for fixation.
Figure 14 illustrates construction of pull rod assembly (118), it comprises top holder (58), bottom holder (59), stud (60), bearing (61), hex pin (63), bearing (62) and link pin (64). Bearing (61) is placed inside the hole/circular groove (114) of the top holder (58). Bearing (62) is placed inside the hole/circular groove (115) of the bottom holder (59). One end of stud (60) is inserted in the hole (116) of the top holder (58) and another end of the stud (60) is inserted in the hole (117) of the bottom holder (59). Hex pin (63) inserted through the central hole of the bearing (61) to fix the top holder (58) in the slot (109) of front swing arm (47) (Refer figure 13) or in the slot (108) of back swing arm (48). Link pin (64) is passed through the central hole of the bearing (62) to connect bottom holder (59) with the front plate (50) and back plate (51) of knife drive mechanism (123) (Refer figure 15A). Top holes (119 and 120) on front plate (50) and top holes (121 and 122) on back plate (51) are used to connect bottom holder (59)

with knife drive mechanism (123). Diameter of top holder (58) is bigger than the diameter of bottom holder (59), In preferred embodiment, bearing 6205 is used as a bearing (61) and bearing 6204 is used as bearing (62). Stud (60) has adjustable nut to adjust the distance between top holder (58) and bottom holder (59). During maintenance, the length of the stud (60) is adjusted to easily realign the knife drive mechanisms.
Figure 15 A illustrates knife drive mechanism (123); it comprises front plate (50), back plate (51), top link (52), bottom link (53) and side roller (54 and 55). Top link (52) is hingedly connected to bottom link with the help of circlip pin (57). Top of the top link (52) is hingedly fixed to front plate (50) and back plate (51) with the help of series of bottom holes (124) on front plate (50) and series of bottom holes (125) on back plate (51), and link pin (126). Knife (75) (Refer fig. 3, 15B & 15C) is inserted through the knife slot (127) provided on bottom link (53). Side roller (54) is fixed at one end of both front plate (50) and back plate (51) with the help of slot (128) on front plate (50) and corresponding slot on back plate (51), and link pin (56). Side roller (55) is fixed at another end of both front plate (50) and back plate (51) with the help of slot (129) on front plate (50) and corresponding slot on back plate (51), and link pin. In one of the preferred embodiment, top link (52), bottom link (53), side rollers (54 and 55) are made up of Nylon 66 material.
Figure 15B, 15C illustrates the shape of the knife (75). Knife (75) has substantially "I" shape. It has substantially "V" shaped cut at the top

(177). Top "V" shape engages the hooks of the module (175). Knife
(75) is designed in particular shape as shown in Figure 15C to reduce
the weight of the knife (75) without compromising the required
quality (Strength). Knife (75) is made up of metal. Weight of the knife
is in the range of 1.1 to 1.5 Kg. In one of the preferred embodiment,
knife (75) is made up of aluminium metal and weight is
approximately 1.3 Kg.
Figure 16A, 16B, 16C and 16D illustrate the construction and design of the Electronic harness selection device (Module (175)) mounting mechanism in detail. Bracket holder (77) is fixed mechanically on the inner side of the one of the side frame e.g. second side frame (15). Bracket holder (78) is fixed mechanically on the inner side of the another side frame e.g. first side frame (14). Module mounting bracket
(76) is placed on the respective aligned slots of the bracket holders (77
and 78). Module mounting brackets (76) are fixed in the slots of the
bracket holders (77 and 78) by mechanically fixing bracket fixer (79)
on bracket holder (77) and bracket fixer (80) on bracket holder (78).
During the maintenance of module, the module mounting bracket or
module can be repaired by disengaging the bracket fixers (79 and 80)
with ease; this substantially reduces the maintenance downtime.
Refer Figure-16B; module (175) is placed in between two module mounting brackets (76), modules (175) fixed mechanically in between two module mounting brackets with help of clips (130 and 135), spring (131), washer (132) and LN screw (133); "U" shaped clip (135) is used at the extremely placed module mounting brackets (76) and

rectangular shaped clips (130) are used at other module mounting brackets (76). CL card (134) is mounted on the groove available at top of the module (175), refer figure 16B and 16D for better understanding.
Electronic harness selection device/module (175) is a device which comprises electromagnetic selection system, pulleys and harness. It is available in the market. In one of the preferred embodiment, M5 module is used as a Electronic harness selection device/module (175) along with the compatible CL card.
Figure 17A and 17B discloses shaft joint (9) which is used to join the main shaft. During transportation of the jacquard machine or during maintenance of the machine the longer main shaft has various disadvantages such as additional cost and chance of bending. To avoid this, the main shaft (2) is designed in two parts. These two parts (shafts) are joined by using shaft joint (9). One end of the one shaft is inserted in the central hole (136) of shafting joint (9) through one side (137) of central hole (136), and one end of the another shaft is inserted in the central hole (136) of shafting joint (9) through opposite side of the central hole (136). The shaft ends inserted inside the shaft joint (9) are fixed mechanically with the help of screws and holes present at the circumference of the shaft joint (9).
Figure 18 discloses the overview of the electronic connection; power supply (179) i.e. SMPS is connected to the Distribution card (178), distribution card is connected to the Display device (180) and CL card (134) with the help of wires (e.g. Wire bus). Distribution card consist

of ICs, microprocessor and other electronic component. Display device comprises display, mother board (microprocessor), memory, and slot for pen drive from which design of the fabric is loaded into the system.
Following paragraphs describes the integration of the various sub-assemblies of the jacquard machine. Refer figures, especially Figure 2B, 3, 7A, & 7B, 10A and 10B for better understanding of the invention.
Main shaft (2) of the jacquard machine receives the drive from the crank shaft (5) of the weaving loom at the point of first chain sprocket (3). Main shaft (2) of jacquard machine is mounted on the bottom frame (6) with help of the first side frame (14), second side frame (15) and main shaft mounting mechanism (7). Proximity sensor mechanism (8) is mounted on the main shaft (2) to sense the rotational position of the main shaft. Two parts of the main shaft are joined with the help of the shaft joint (9).
First eccentric wheel mechanism (10) and second eccentric wheel mechanisms (11) are installed on the main shaft (2). At the bottom of machine, main shaft is passed through the hole (98) of the cam (89) of the first eccentric wheel mechanism (10). Further, Main shaft is passed through the hole (99) of the cam (65) of the second eccentric wheel mechanism (11). Length of the big lever (88) of first eccentric wheel mechanism (10) is bigger than the length of the small lever (67) second eccentric wheel mechanism (11). Difference between the

length of the bigger lever (88) and length of the small lever (67) is around 100 mm.
At right side top of the machine, first connecting plate (91), lever joint block (93) and second connecting plate (92) (figure 11 A) of the first eccentric wheel mechanism (10) is connected to the top drive shaft (16). Refer figure-3, 7A and 7B, Right side top swing arm assembly (18) is installed on top drive shaft (16) at place between first eccentric wheel mechanism (10) and first side frame (14). On opposite side i.e. left side of the machine, the Left side top swing arm assembly (20) is installed on the top drive shaft (16).
At left side top of the machine, first connecting plate (68), lever joint block (70) and second connecting plate (69) (figure 1 IB) of the second eccentric wheel mechanism (11) is connected to the bottom drive shaft (17). Refer figure-3, 7A and 7B; Left side bottom swing arm assembly (21) is installed on bottom drive shaft (17) at place between second eccentric wheel mechanism (11) and second side frame (15). On opposite side i.e. right side of the machine, the Right side bottom swing arm assembly (19) is installed on the bottom drive shaft (17),
Refer Figure 7A, 7B, 10A and 10B; Right side top front swing arm (22) is connected to the front side of the Right side outer knife drive mechanism (34) with the help of the Right side front long pull rod assembly (30). Right side top back swing arm (23) is connected to the back side of the Right side inner knife drive mechanism (33) with the help of the Right side back long pull rod assembly (111).

Left side top back swing arm (26) is connected to the back side of the Left side outer knife drive mechanism (36) with the help of the Left side back long pull rod assembly (32). Left side top front swing arm (27) is connected to the front side of the Left side inner knife drive mechanism (35) with the help of the Left side front long pull rod assembly (112).
Right side bottom front swing arm (24) is connected to the front side of the Right side inner knife drive mechanism (33) with the help of the Right side front short pull rod assembly (110). Right side bottom back swing arm (25) is connected to the back side of the Right side outer knife drive mechanism (34) with the help of the Right side back short pull rod assembly (31).
Left side bottom back swing arm (28) is connected to the back side of the Left side inner knife drive mechanism (35) with the help of the Left side back short pull rod assembly (113). Left side bottom front swing arm (29) is connected to the front side of the Left side outer knife drive mechanism (36) with the help of the Left side front short pull rod assembly (33).
Refer Figure 4, 10A and 1GB, First set of knifes (146) are connected to the Right side inner knife drive mechanism (33) on right side and on the left side same set of knifes (146) are connected with Left side outer knife drive mechanism (36). Second set of knifes (147) are connected to the Right side outer knife drive mechanism (34) on right side and on the left side same set of knifes are connected with Left side inner knife drive mechanism (35) . In one of the preferred

embodiment, first set of knife comprises 6 knifes and second set of knife comprises 8 knifes.
Refer Figure-3; the side frames (14 and 15) provide the guide path for vertical movement of knife by arranging the series of vertical strips (76). Large window/cut on side frames (14 and 15) is converted into guide path for knifes by using vertical strips (76). In one of the preferred embodiment, vertical strips (76) are made up of hylam material. Hylam material is used to reduce the friction and damage to the knife during movement of the knife.
Refer figure -3, 6 and 15A, two side rollers (54 and 55) are available on every knife drive mechanisms (33, 34, 35 and 36), one at front side and another at back side. Stoppers (37, 38, 39 and 40) are installed on the side frames. Stoppers (37, 38, 39 and 40) are in contact with the side rollers of the knife drive mechanisms (33, 34, 35 and 36). Front right stopper (37) is in contact with the front side roller of the Right side inner knife drive mechanism (33) and Right side outer knife drive mechanism (34). Back right stopper (38) is in contact with the back side roller of the Right side inner knife drive mechanism (33) and Right side outer knife drive mechanism (34). Front left stopper (39) is in contact with the front side roller of the Left side inner knife drive mechanism (35) and Left side outer knife drive mechanism (36). Back left stopper (40) is in contact with the back side roller of the Left side inner knife drive mechanism (35) and Left side outer knife drive mechanism (36). Stoppers (37, 38, 39 and 40) are installed to avoid

sideways movement of the knife drive mechanisms (33, 34, 35 and 36).
Refer figure 3, 4 and 6; Right side leno mechanism (12) is installed on extreme right end on the Bottom drive shaft (17). Left side leno mechanism (13) is installed on extreme left end on the Top drive shaft (16). Both leno mechanisms (12 and 13) has a rectangular plate, wherein at the centre of the plate the hole is provided for the mounting the plate on the respective drive shaft (16 or 17). Small holes are provided at both extreme ends of the said strip to pass the leno thread through it.
Refer figure 3 and 4; proximity sensor mechanism (8) is mounted on the main shaft (2) to sense the rotational position of the main shaft. Two tappets (141 and 142) with 90 degree offset are installed on the main shaft (2). Sensors (140) are provided at the bottom of the tappets to sense the position of the tappets.
Figure 7A, 7B illustrates the setting and calibration of the jacquard machine. Position of cams on both eccentric wheel mechanism (10 and 11) shown in the figure -7A & 7B is considered as a "Zero position". For the purpose of calibration and setting of the jacquard machine multiple setting holes are provided on cams, swing arms and side frames. Cam (65) of second eccentric wheel mechanism (11) is in 180 degree opposite to the position of cam (89) of First eccentric wheel mechanism (10). During calibration at zero position, calibration hole (143) on cam (89) of First eccentric wheel mechanism (10) matches with respective top calibration hole (among three holes)

available on first side frame (14); at the same time bottom calibration hole (145) on all Right side swing arms (22, 23, 24 and 25) shall match with the respective central calibration hole (among three holes) available on first side frame (14); further calibration hole (144) on cam (65) of second eccentric wheel mechanism (11) matches with respective top calibration hole (among three holes) available on second side frame (15); at the same time bottom calibration hole (145) on all Left side swing arms (26, 27, 28 and 29) shall match with the respective central calibration hole (among three holes) available on second side frame (15).
During running condition of the weaving loom crank shaft (5) of weaving loom rotates continuously. As second chain sprocket (4) is installed on crank shaft (5) of loom, the second chain sprocket (4) rotates with the rotation speed of the crank shaft (5) of the weaving loom. Second chain sprocket (4) drives the first chain sprocket (3) with the help of chain (176), this result in the rotation of the main shaft (2) of the jacquard machine. First eccentric wheel mechanism (10) drives the top drive shaft (16) and second eccentric wheel mechanism (11) drives the bottom drive shaft (17). Eccentric wheel mechanisms (10 and 11) convert rotary motion of the main shaft (2) into oscillatory motion.
Figure 7A, 7B illustrates zero degree position, at this position all swing arms of the all swing arm assemblies are at equal level, hence all set of knifes (146 and 147, figure-4) are at middle level. Semicircle arrow shows the direction of the rotation.

Figure 8A and 8B illustrates 90 degree position, at this position Right side top front swing arm (22), Right side bottom back swing arm (25), Left side top front swing arm (27) and Left side bottom back swing arm (28) moves upward, which lifts Right side outer knife mechanism (34) and Left side inner knife mechanism (35) which result in lifting of second set of knifes (147); at the same time Right side top back swing arm (23), Right side bottom front swing arm (24), Left side top back swing arm (26) and Left side bottom front swing arm (29) moves downwards, which lowers Right side inner knife mechanism (33) and Left side outer knife mechanism (36) which result in lowering of first set of knifes (146); Semicircle arrow shows the direction of the rotation.
Figure 9A and 9B illustrates 180 degree position, at this position all swing arms of the all swing arm assemblies are at equal level, hence all set of knifes (146 and 147, figure-4) are at middle level. Semicircle arrow shows the direction of the rotation.
Figure 10A and 10B illustrates 270 degree position, at this position Right side top front swing arm (22), Right side bottom back swing arm (25), Left side top front swing arm (27) and Left side bottom back swing arm (28) moves downward, which lowers Right side outer knife mechanism (34) and Left side inner knife mechanism (35) which result in lowering of second set of knifes (147); at the same time Right side top back swing arm (23), Right side bottom front swing arm (24), Left side top back swing arm (26) and Left side bottom front swing arm (29) moves upwards, which lifts Right side inner knife

mechanism (33) and Left side outer knife mechanism (36) which result in lifting of first set of knifes (146). Semicircle arrow shows the direction of the rotation.
The foregoing description along with the examples and the drawings of the invention has been presented describing certain operable and preferred embodiments. It is not intended that the invention should be so limited since variations and modifications thereof will be obvious to those skilled in the art, all of which are within the spirit and scope of the invention.

I/We claim:
1. Jacquard machine (1) for textile weaving loom: comprises; a
main shaft (2), a first eccentric wheel mechanism (10), a second
eccentric wheel mechanisms (11), a swing arm assemblies (18,
19, 20, 21), a pull rod assemblies (30, 31, 32, 33, 110, 111, 112
and 113), a knife drive mechanisms (33, 34, 35 and 36), a knife
(75), an electronic harness selection devices (175), a electronic
harness selection device mounting mechanism (41); a leno
mechanisms (12 and 13) and a proximity sensor mechanism (8);
main shaft (2) of the jacquard (1) is connected to a crank shaft (5) of weaving loom by transmission means such as chain sprocket drive; the knife drive mechanisms (33, 34, 35 and 36) are connected with the swing arm assemblies (18, 19, 20, 21) through pull rod assemblies (30, 31, 32, 33, 110, 111, 112 and 113).
2. Jacquard machine according to claim 1, wherein main shaft (2) of the jacquard (1) is driven by chain drive mechanism with the help of a first chain sprocket (3) and a chain (176); chain tensioners (45 and 46) are installed on both sides of the chain (176) to adjust the tension in the chain (176); ratio of tooth on the first chain sprocket (3) to tooth on second chain sprocket (4) is 2:1.
3. Jacquard machine according to claim 1, wherein the first eccentric wheel mechanism (10) and the second eccentric wheel mechanisms (11) are installed on the main shaft (2); the first

eccentric wheel mechanism (10) is connected to the top drive shaft (16); a right side top swing are assembly (18) and a left side top swing arm assembly (20) are installed on top drive shaft (16); second eccentric wheel mechanism (11) is connected to the bottom drive shaft (17); a left side bottom swing arm assembly (21) and a right side bottom swing arm assembly (19) are installed on bottom drive shaft (17);
4. Jacquard machine according to claim 1, the offset (C) between
the axis of main shaft and central axis of cam (65 and 89) is
l/4th of diameter of the cam (65 and 89); least radial dimension
(B) of cam (65 and 89) is l/3rd of the greatest radial dimension (A) of the cam (65 and 89); preferably the diameter (D) of the cam is about 120 mm, greatest radial dimension (A) is about 90 mm, least radial dimension (B) is about 30 mm and the offset
(C) between the axis of main shaft (2) and axis of cam is about 30 mm; dimensions of cam (89) installed in first eccentric wheel mechanism (10) and cam (65) installed in second eccentric wheel mechanism (11) are same.
5. Jacquard machine according to claim 1, wherein at knife drive
mechanism comprises front plate (50), back plate (51), top link
(52), bottom link (53) and side rollers (54 and 55); Stoppers
(37, 38, 39 and 40) are installed on the side frames; Stoppers
(37, 38, 39 and 40) are in contact with the side rollers of the
knife drive assemblies (33, 34, 35 and 36); top link (52), bottom

link (53), side rollers (54 and 55) are preferably made up of Nylon 66 material.
6. Jacquard machine according to claim 1, wherein cross-section of Knife (75) has substantial "I" shape, knife (75) has substantially "V" shaped cut at the top (177); Knife (75) is made up of metal, weight of the knife is in the range of 1.1 to 1.5 Kg; Preferably, knife (75) is made up of aluminium metal and weight is approximately 1.3 Kg.
7. Jacquard machine according to claim 1, wherein first set of knifes (146) are connected to the Right side inner knife drive mechanism (33) on right side and on the left side same set of knifes (146) are connected with Left side outer knife drive mechanism (36); Second set of knifes (147) are connected to the Right side outer knife drive mechanism (34) on right side and on the left side same set of knifes are connected with Left side inner knife drive mechanism (35); preferably first set of knife comprises 6 knifes and second set of knife comprises 8 knifes.
8. Jacquard machine according to claim 1, wherein pull rod assembly (118) comprises top holder (58), bottom holder (59), stud (60), bearing (61), hex pin (63), bearing (62) and link pin (64); stud of long pull rod assembly is longer than the stud of short pull rod assembly; during maintenance, the length of the stud (60) is adjusted to easily realign the knife drive mechanisms.

9. Jacquard machine according to claim 1, wherein Right side leno mechanism (12) is installed on extreme right end on the Bottom drive shaft (17); Left side leno mechanism (13) is installed on extreme left end on the Top drive shaft (16).
10 Jacquard machine according to claim 1, wherein the side frames (14 and 15) provide the guide path for vertical movement of knife by arranging the series of vertical strips (76); Large window/cut on side frames (14 and 15) is converted into guide path for knifes by using vertical strips (76), vertical strips (76) are preferably made up of hylam material.
11. Jacquard machine according to claim 1, wherein Electronic harness selection device mounting mechanism (41) comprises module mounting brackets (76), bracket holders (77 and 78), bracket fixers (79 and 80); during the maintenance of module, the module mounting bracket or module can be repaired by disengaging the bracket fixers (79 and 80) with ease; this substantially reduces the maintenance downtime; module (175) is placed in between two module mounting brackets (76), modules (175) fixed mechanically in between two module mounting brackets; CL card (134) is mounted on the groove available at top of the module (175); preferably M5 module is used as a Electronic harness selection device/module (175) along with the compatible CL card.
12.Jacquard machine according to claim 1, wherein proximity sensor mechanism (8) is mounted on the main shaft (2) to sense

the rotational position of the main shaft; Two tappets (141 and 142) with 90 degree offset are installed on the main shaft (2), Sensors (140) are provided at the bottom of the tappets to sense the position of the tappets.
13. Jacquard machine according to claim 1, wherein holes are provided on cams, swing arms and side frames for the purpose of calibration and setting of the jacquard machine, settings are done at zero position; Cam (65) of second eccentric wheel mechanism (11) is in 180 degree opposite to the position of cam (89) of First eccentric wheel mechanism (10), during calibration at zero position, calibration hole (143) on cam (89) of First eccentric wheel mechanism (10) matches with respective top calibration hole (among three holes) available on first side frame (14); at the same time bottom calibration hole (145) on all Right side swing arms (22, 23, 24 and 25) shall match with the respective central calibration hole (among three holes) available on first side frame (14); further calibration hole (144) on cam (65) of second eccentric wheel mechanism (11) matches with respective top calibration hole (among three holes) available on second side frame (15); at the same time bottom calibration hole (145) on all Left side swing arms (26, 27, 28 and 29) shall match with the respective central calibration hole (among three holes) available on second side frame (15).
14.Method of lifting knife of jacquard machine: comprises steps;

A. At zero degree position, all swing arms are at equal level,
hence all set of knifes (146 and 147) are at middle level.
B. At 90 degree position Right side top front swing arm (22),
Right side bottom back swing arm (25), Left side top front
swing arm (27) and Left side bottom back swing arm (28)
moves upward, which lifts Right side outer knife mechanism
(34) and Left side inner knife mechanism (35) which result
in lifting of second set of knifes (147); at the same time
Right side top back swing arm (23), Right side bottom front
swing arm (24), Left side top back swing arm (26) and Left
side bottom front swing arm (29) moves downwards, which
lowers Right side inner knife mechanism (33) and Left side
outer knife mechanism (36) which result in lowering of first
set of knifes (146);
C. at 180 degree position, at this position all swing arms of the
all swing arm assemblies are at equal level, hence all set of
knifes (146 and 147, figure-4) are at middle level.
D. at 270 degree position, at this position Right side top front
swing arm (22), Right side bottom back swing arm (25), Left
side top front swing arm (27) and Left side bottom back
swing arm (28) moves downward, which lowers Right side
outer knife mechanism (34) and Left side inner knife
mechanism (35) which result in lowering of second set of
knifes (147); at the same time Right side top back swing arm
(23), Right side bottom front swing arm (24), Left side top
back swing arm (26) and Left side bottom front swing arm

(29) moves upwards, which lifts Right side inner knife mechanism (33) and Left side outer knife mechanism (36) which result in lifting of first set of knifes (146).