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Another way spindles are categorised is by the location of the whorl. The whorl, where present, may be located near the top, bottom or center of the spindle. For example a top-whorl drop spindle will have the whorl located near the top of the shaft underneath a hook that allows the spindle to suspend as it is being spun. [10]
The Spinner by William-Adolphe Bouguereau shows a woman hand-spinning using a drop spindle.Fibers to be spun are bound to a distaff held in her left hand.. Spinning is an ancient textile art in which plant, animal or synthetic fibres are drawn out and twisted together to form yarn.
Generally, after this step the yarn is wound to a cone for knitting or weaving. Mule spinning. In a spinning mule, the roving is pulled off bobbins and sequentially fed through rollers operating at several different speeds, thinning the roving at a consistent rate. The yarn is twisted through the spinning of the bobbin as the carriage moves out ...
The charkha works similarly to the great wheel, with a drive wheel being turned by one hand, while the yarn is spun off the tip of the spindle with the other. The floor charkha and the great wheel closely resemble each other. With both, yarn must be held off the end of the spindle in order to twist it, and off-axis to wind the yarn onto the ...
The spindle is driven and the traveller drags behind thus distributing the rotation between winding up on the spindle and twist into the yarn. The bobbin is fixed on the spindle. In a ring frames, the different speed was achieved by drag caused by air resistance and friction (lubrication of the contact surface between the traveller and the ring ...
Drop-stitch knitting is a knitting technique for producing open, vertical stripes in a garment. The basic idea is to knit a solid fabric, then (deliberately) drop one or more stitches (i.e., draw a loop out from the loop below it, and so on repeatedly), producing a run (or ladder ) in the fabric.
The standard US spindle shaft is 1 + 3 ⁄ 4 in (44 mm), with 3 ⁄ 4 or 1 ⁄ 2 in (19 or 13 mm) on small shapers and 30 mm on European models. Most spindles are tall enough to accommodate more than one cutter head, allowing rapid tooling changes by raising or lowering desired heads into position. Additional spindles can be fitted with pre ...
The spindle speeds may be calculated for all machining operations once the SFM or MPM is known. In most cases, we are dealing with a cylindrical object such as a milling cutter or a workpiece turning in a lathe so we need to determine the speed at the periphery of this round object.