Abstract: A threading accessory comprising a belt and two rotatable wheels configured to revolve the belt which has a circumferential groove formed in an outer face thereof and configured to receive and hold a portion of a thread therein. One or more press-wheels are used to engage a portion of the belt passing between the rotating wheels and elastically deform the belt portion to thereby at least partially wrap it about and latch the thread portion inside in the circumferential groove for propulsion by the belt.