(57) A yarn splicer (310) having a closable pneumatic chamber (320) which is permanently
open at each end so as to receive the yarns to be spliced from opposite ends, discrete
yarn rolling means (361, 362 (361', 362')) arranged on either side of the splicer
adjacent each end of the chamber to engage the running portion of a respective yarn
in the chamber, and yarn gripping means (326, 327, 328) also disposed at either end
of the chamber to engage the respective loose ends of the yarns. Actuation of the
splicer results in a prescribed rolling action on the yarns in a direction to completely
detwist them, and deactivation results in an equal and opposite action on the yarns
so as to restore the original twist.
The preferred arrangement has a biased lost motion linkage between the actuation means
and the chamber- mechanism which provides a drive to the rolling means and gives an
over-twist to the yarns during detwisting and which recovers the over-twist as well
as restoring the original twist at the termination of the splice.
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