Abstract: An apparatus for forming non-woven pile fabric comprises a pair of folding blades which oscillate to form ballows folds in warp threads passing between them. The folder blades are carried on forward ends of supports pivotally hung on pairs of suspension members. One suspension member of each pair is driven from a crank to impart oscillatory motion, while the other is adjustable in effective length to set the travel of the folder blade. Such length adjustment is effected by the upper ends of the suspension members being mounted on adjustable eccentric mountings.

Abstract: Pressure rollers are carried on respective shafts which are slidable in slotted plates towards and away from a machine centreline to define a gap. Measuring means are provided for determining the position of each roller, in the form of a contact probe mounted on each end of each shaft with the probes at either end bearing on opposite faces of a plate of known thickness centred on the machine centreline.