Mechanism for moving work fabric for embroidering by a sewing machine

A mechanism adapted for holding and moving a work fabric to be embroidered by a sewing machine, including a pair of first crank and slotted cross-head mechanisms, each of said first crank and slotted cross-head mechanisms comprising a crank and a slot in a common cross-head, said crank of each of said first crank and slotted cross-head mechanisms being a sliding fit respectively in said slot of each of said first crank and cross-head mechanisms, said cranks being apart from revolution axes thereof at an identical distance from the axes respectively, said slots of said first crank and slotted cross-head mechanisms being in parallel with each other, a second crank and slotted cross-head mechanism, said second crank and slotted cross-head mechanism comprising a crank and a slot in said common cross-head, said crank of said second crank and slotted cross-head mechanism having a sliding fit in said slot thereof, said slot of said second crank and slotted cross-head mechanism being at right angle to said slots of said first crank and slotted cross-head mechanisms, a frame adapted for holding said work fabric in tensioned condition and being rigidly connected to said common cross-head, and means for attaching said mechanism contiguously to a bed of the sewing machine.