Roving Frame


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Roving Frame

 

a machine used in spinning to form roving. Depending on the type of fiber and the thickness of the roving, these machines may vary in the working principle of the drafting devices, the dimensions of the flyers, spindles, and bobbins, and the method of forming the roving (by twisting with a spindle or by rubbing). In a cotton roving frame, for example, the sliver is supplied from sliver cans, passes around a feed roller, and is fed to the drafting device. It then passes through an eyelet, a hollow leg, and the pressure finger of the flyer, which is mounted atop the spindle, and is then wound onto a bobbin in the form of roving. Spindles may have rotation speeds up to 800 rpm. In the French system of spinning wool, the roving is formed by means of rubbing sleeves.

References in periodicals archive ?
TABLE-I Medium High Operational Grade Yarn Grade Yarn Sequence Ne Ne Slubbing Frame 6s to 8s -- Intermediate Frame Upto 15s -- Roving Frame Upto 36s 12s to 30s Jack Frame No.
Nevertheless, most, if not all, of the spinning mills in Pakistan, operating ring spinning frames, spin yarn from roving produced on roving frames.
This un-named lad is seen oiling the roving frames in one of the weaving sheds.