Structure Of Spinning Heald Machinery
The major components of the loom are the fine yarn heald wireframe, heald, harnesses (shafts in two or four), shuttle, reed, and takeup roll. In the loom, yarn processing includes shedding, picking, and battening.
Looms are generally known as either vertical or horizontal. Horizontal looms are easier to dismantle, thus popular in the weaving of tribal rugs. Vertical looms are used in commercial, city, and village weaving. There are many different
types of looms with several shapes and mechanics, but the basic purpose is to hold the threads under tension to facilitate the interweaving of threads.
1. Shedding is the raising of part of the warp yarn to form a shed, which is the vertical gap between the raised and the unraised warp yarns. The heddle frame is a rectangular frame of the loom to which a series of wires with harnesses
are attached.
2. Picking is when a single thread of the weft crosses the warp over and over to fill up the gap. In North America, the process of a “pick” is referred to as “filling yarn.” A weft is threaded through the warp using a "shuttle."
During the Industrial Revolution, John Kay’s "flying shuttle," also known as the “wheeled shuttle,” accelerated the production of cloth. Not only did it allow a single weaver to weave wider fabrics, but it can also be mechanized in
automatic machine looms. It became possible to make cotton yarn of sufficient strength to be used as the warp in mechanized weaving. Later, artificial or man-made fibers such as nylon or rayon were employed.
3. Battening is the process of pressing down the weft after the shuttle moves across the loom. The portion of the fabric that has already been formed but not yet rolled up on the takeup roll is called the fell.
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