PURPOSE: To obtain the long-sized material feeder which is small in size and simple in construction.

CONSTITUTION: A sliding contact part 22 with which the long-sized material 2 comes into contact is formed on a moving base 4 and a clamping member 30 supported oscillatably around a supporting shaft 28 orthogonal with the long-sized material 2 is provided on the moving base 4. A clamping member 34 facing the sliding contact part 22 is formed to the clamping member 30 contactably with the long-sized material 2. Further, the contact point thereof is provided forward of the supporting shaft 28 in a forward moving direction. The clamping member 34 is rotated and energized in the contact direction around the supporting shaft 28. The clamping member 34 is oscillated by the friction force at the contact point 36 when the moving base 4 is moved forward. The long-sized material 2 is held and fed by the sliding contact part 25 and the clamping part 34.