Gullen Whipple, of Providence, R. I., has invented an improved method of drawing cotton, wool, flax, and other fibrous materials, by means of a revolving toothed or card clothed cylinder and a single pair of drawing rollers, which draw the fibers directly from the teeth of the card cylinder ; the surfaces of the rollers revolving as much faster than the surface of the cylinder as is requisite to produce the required amount of drawing. This mode of drawing produces a more uniform sliver, especially from stock that is of different length as wool and cotton mixed, than the ordinary mode where four or six rollers are useu.