Patent ID: 7475531

Claim:
A drafting device for drafting fiber bundles, comprising: a bottom roller, and twin-type delivery top rollers opposed to said bottom roller; an apron surrounding each of said top rollers, said aprons defining a clamping surface with said bottom roller for fiber bundles, said aprons having a circumferential cross-sectional shape; a deflection member associated with each said top front roller around which said aprons run, said deflection members formed as an integral component of a rigid holder; and wherein said deflection members are disposed away from said clamping surface at spacing interval between a deflection surface of said deflection members and an axis of said top rollers so as to establish a running path for said aprons that results in a slight deformation of said circumferential cross-sectional shape of said aprons such that said aprons bow outward in said running path between said top rollers and said deflection members and are subjected to substantially only tractive tension resulting from said aprons attempting to assume said circumferential cross-sectional shape.