Loop-forming assembly for weaving machine

A loop-forming assembly in a weaving machine for weaving a web of surface fastener tape having a multiplicity of warp pile loops formed of loop-forming warp threads on one side thereof, said assembly comprising:

• (a) a lancet unit including a plurality of parallel spaced lancets each extending forwardly between and in parallel to a corresponding adjacent pair of ground warp threads beyond a cloth fell of the machine;
• (b) a leno deflector extending transversely of said lancets between the fell and a harness of the machine, and including a plurality of eyelets through which the loop-forming warp threads are threaded respectively, said deflector being kept free from the lancets and reciprocable in a substantially axial direction thereof so as to deflect the course of the loop-forming threads alternately to one side and then to the other side of corresponding lancets respectively;
• and
• (c) a gate hook unit including a plurality of pairs of spaced gate hook bars disposed immediately downstream of said leno deflector and each pair extending vertically at the opposite sides of the corresponding one of said lancets such that said gate hook bars are kept free from the respective lancets and from said leno deflector, and each pair of gate hook-bars being vertically reciprocable in timed relation to said leno deflector to thereby capture the thus laterally deflected loop-forming warp thread by one of hook portions defined thereon to lower the thread alternately at one side and then at the other side of the corresponding lancet so as to pass the thread over the latter in a staggering fashion to thereby form of the warp pile loops.