Filament drawing frame with variable roller-pair spacing

In a filament drawing apparatus comprising:

• a support;
• at least two pairs of rollers spaced apart on the support in a travel direction, whereby filaments to be drawn pass in the direction between the rollers of both pairs;
• a drive having at least two output shafts and including transmission means for rotating the shafts at different speeds, one of the shafts being connected to one of the roller pairs, the other roller pair being displaceable on the support in the direction relative to the one roller pair;
• an input gear mounted on the other output shaft;
• an output gear mounted on one of the rollers of the other roller pair and diplaceable therewith in the direction;
• and
• an intermediate gear meshing with and interconnecting the input and output gears, whereby rotation of the other output shaft is transmitted from the input gear through the intermediate gear and output gear to the one roller of the other roller pair;
• the improvement comprising:
• an input link having one end pivoted at the other output shaft and an opposite end;
• and
• an output link having one end pivoted at the one roller of the other roller pair and having an opposite end pivoted on the opposite end of the input link, the intermediate gear being mounted and rotatable on the opposite ends of the links.