Mechanical Jacquard : Single liftSingle cylinderĤ00= 8 x 50 One needle and one hook for every end in the design: 400 needles, 400 hooks, 400 independent end lifts The knives in turn move up and down hooks to form the shed according to the weave design. It is the connection which controls the up and down movements of the knives. The mechanism consists of levers that connect the main shaft to the knives. The mechanism that links the engine to the weaving machine

Knives, hooks, needles, springs, and card cylinder, endless paper pattern neck-cords, harness cords, mails, and weights (spring or elastomer) Hooks, neck-cords, harness cords, mails, and weights (spring or elastomer)Ī Jacquard machine may be divided into three main parts: The mechanism that links the engine to the weaving machine Knives ( set of knives) needles, springs, card cylinder, and endless paper pattern Three principal motion in the jacquard shedding. Hook is the main lifting element of the jacquard shedding. of hooks can be given to define the size of jacquard, say, 600-hook jacquard. It has twelve horizontal rows of needles placed one above the other with 50 needles in each row, plus a few extra needles. of picks in the weave repeatġ2 is known as short row, 50 is known as long row. The term ‘pitch’ refers to the distance between the needle centers.ĭesign capacity of the jacquard for the control of the ends Number of independent end lifts that can obtained Virtually unlimited for the no. Most of the rest are general purpose types that are comparatively easy to classify.Įnglish pitch (coarse pitch) Mechanical Single lift /double lift Coarse Vienna pitch: 6.82 mm x 6.82 mm or 5.77mm x 5.11 mm French or Continental pitch (fine pitch) Mechanical or electronic Single lift /double lift Vincenzi / Verdol French Laccase pitch: 4.00 mm x 4.00 mm Verdol pitch: 3.00 mm x 3.00 mm Staubli’s UNIVAL 100 Jacquard Grosse’s UNISHED Jacquard Many specialized types of jacquard machine have been developed for weaving particular kinds of fabric, such as terry towels, damasks, and carpets. In jacquard weaving, it is possible to control every warp yarn individually.

Jacquard shedding mechanisms are capable of producing large and intricate weave designs that are beyond the scope of dobby shedding mechanisms.

Digital jacquard design. pdf