D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
D01H—SPINNING OR TWISTING
D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
D01H5/22—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by rollers only
D01H5/24—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by rollers only with porcupines or like pinned rotary members