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Award Winning Grassroots Innovation - Modification in Jacquard Loom for Weft Thread Insertion
Jacquard loom is a mechanical loom used for preparing textiles with intricate designs. Weft threads are the woolen threads which are inserted in the warp yarn pattern to produce a variety of designs which are done by tying knots at particular intervals. These knots can go as high as hundreds in numbers depending on the complexity of the design on the fabric and so can take hours of time in handling the weft thread insertion. For the weavers on Jacquard looms, this task becomes quite tedious and time consuming. Moreover, when the gap between the weft thread designs are less, weavers find it difficult of slide their fingers around it to handle it.
Deepak Bharali of Assam, India has developed an attachment for the Jacquard loom which makes the task of inserting the weft threads fast and easier. The device can be mounted on any Jacquard loom and it consists of three components – base frame, magnet bearing shaft and specially designed bobbin.
Advantages of the Jacquard loom attachment
With this attachment, the jacquard loom does automatic selection and lifting of the warp threads and inserts the weft thread between them using the coordinated movement of magnet fitted shaft, the base frame and the magnet sensitive bobbins.
Thedevice reduces the time of traditional weft insertion to one third and it also reduces the drudgery involved.
It boosts the productivity by 60 percent and also produces fabrics of better quality. It also reduces the production cost significantly and even unskilled workers can now produce intricately designed fabrics using this modified Jacquard loom.
Recognition and support for the grassroots innovation
National Innovation Foundation (NIF), a nonprofit autonomous body under the Department of science and Technology, Government of India, has recognized this grassroots innovation and has awarded it in its biennial national competition for unaided green grassroots innovation and traditional knowledge. NIF is also supporting the innovation financially and is taking help from Indian Institute of Technology, Guawahati in refining the design and technology of the device.
Confederation of Indian Industry (CII) in collaboration with Department of Industrial Policy & Promotion (DIPP) & Indian Intellectual Property Office, Government of India has conferred Deepak Bharali with the "GE India innovator of the year" award in April, 2011 for this innovation.
About the Author
Ashish Kumar is a student at Indian Institute of Management, Ahmedabad. He writes articles on grassroots innovations and other related topics.
To know more about the working details of Jacqaurd loom attachment, Please visit
WARP & WEFT