Sliding clasp fasteners

Claim 1

THE METHOD OF SIMULTANEOUSLY PRODUCING TWO SLIDE FASTENER TAPES, EACH TAPE HAVING COUPLING ELEMENTS WHICH ENGAGE THE COUPLING ELEMENTS OF THE OTHER TAPE AND ARE DISENGAGEABLE THEREFROM, SAID COUPLING ELEMENTS BEING FORMED BY PROJECTING PORTIONS OF CONTINUOUS MONOFILAMENTARY WEFT THREADS, SAID METHOD COMPRISING THE STEPS OF ARRANGING AT LEAST FOUR SHUTTLES FOR THROWING WEFT THREADS EACH AT A SEPARATE FIXED LEVEL; SUPPLYING FIRST AND SECOND ONES OF SAID SHUTTLES EACH WITH A MONOFILAMENTARY THREAD FOR FORMING SAID COUPLING ELEMENTS; SUPPLYING THIRD AND FOURTH ONES OF SAID SHUTTLES EACH WITH FABRIC-FORMING THREAD; ARRANGING FOUR GROUPS OF WARP THREADS WITH TWO GROUPS FOR EACH TAPE, SAID WARP THREADS BEING ARRANGED WITH THE THREADS OF EACH GROUP ADJACENT TO THOSE OF AT LEAST ONE OTHER GROUP; POSITIONING A WIRE WITH ONE END ANCHORED AGAINST LONGITUDINAL DISPLACEMENT AND THE OTHER END FREE; THROWING SAID FIRST AND SECOND SHUTTLES ALTERNATELY ACROSS SAID WIRE; DISPLACING THE ANCHORED END OF SAID WIRE VERTICALLY BETWEEN SUCCESSIVE THROWS OF SAID FIRST AND SECOND SHUTTLES TO CAUSE SAID MONOFILAMENTARY THREADS TO BE LOOPED AROUND SAID WIRES WITH THE LOOPED PORTIONS OF ONE MONOFILAMENTARY THREAD IN LATERAL ENGAGEMENT WITH THE LOOPED PORTIONS OF THE OTHER MONOFILAMENTARY THREAD; SHEDDING SAID WARP THREADS OF TWO OF SAID GROUPS TO ENGAGE SAID MONOFILAMENTARY WEFT THREADS ADJACENT TO SAID WIRE WHEREBY EACH MONOFILAMENTARY WEFT THREAD IS WOVEN INTO A PORTION OF ONE TAPE WHICH IS ADJACENT TO THE OTHER TAPE; SHEDDING SAID WARP THREADS AND THROWING THE THIRD AND FOURTH SHUTTLES TO FORM THE BASIC FABRIC OF EACH TAPE, ADVANCING BOTH TAPES TO FREE THE INTERENGAGING LOOPED PORTIONS OF SAID MONOFILAMENTARY THREADS FROM SAID WIRE; AND BEATING SAID INTERENGAGING PORTIONS OF SAID MONOFILAMENTARY THREADS TO FORM COOPERATING DEFORMATIONS THEREIN.

Claim 2

THE METHOD OF SIMULTANEOUSLY PRODUCING TWO SLIDE FASTENER TAPES, EACH TAPE HAVING COUPLING ELEMENTS WHICH ENGAGE THE COUPLING ELEMENTS OF THE OTHER TAPE AND ARE DISENGAGEABLE THEREFROM, SAID COUPLING ELEMENTS BEING FORMED BY PROJECTING PORTIONS OF CONTINUOUS MONOFILAMENTARY WEFT THREADS, SAID METHOD COMPRISING THE STEPS OF ARRANGING AT LEAST FOUR SHUTTLES FOR THROWING WEFT THREADS EACH AT A SEPARATE FIXED LEVEL; SUPPLYING FIRST AND SECOND ONES OF SAID SHUTTLES EACH WITH A MONOFILAMENTARY THREAD FOR FORMING SAID COUPLING ELEMENTS; SUPPLYING THIRD AND FOURTH ONES OF SAID SHUTTLES EACH WITH FABRIC-FORMING THREAD; ARRANGING FOUR GROUPS OF WARP THREADS WITH TWO GROUPS FOR EACH TAPE, SAID WARP THREADS BEING ARRANGED WITH THE THREADS OF EACH GROUP ADJACENT TO THOSE OF AT LEAST ONE OTHER GROUP; POSITIONING A WIRE WITH ONE END ANCHORED AGAINST LONGITUDINAL DISPLACEMENT AND THE OTHER END FREE; THROWING SAID FIRST AND SECOND SHUTTLES ALTERNATELY ACROSS SAID WIRE; DISPLACING THE ANCHORED END OF SAID WIRE VERTICALLY BETWEEN SUCCESSIVE THROWS OF SAID FIRST AND SECOND SHUTTLES TO CAUSE SAID MONOFILAMENTARY THREADS TO BE LOOPED AROUND SAID WIRES WITH THE LOOPED PORTIONS OF ONE MONOFILAMENTARY THREAD IN LATERAL ENGAGEMENT WITH THE LOOPED PORTIONS OF THE OTHER MONOFILAMENTARY THREAD; SHEDDING SAID WARP THREADS OF TWO OF SAID GROUPS TO ENGAGE SAID MONOFILAMENTARY WEFT THREADS ADJACENT TO SAID WIRE WHEREBY EACH MONOFILAMENTARY WEFT THREAD IS WOVEN INTO A PORTION OF ONE TAPE WHICH IS ADJACENT TO THE OTHER TAPE; SHEDDING SAID WARP THREADS AND THROWING THE THIRD AND FOURTH SHUTTLES TO FORM THE BASIC FABRIC OF EACH TAPE, ADVANCING BOTH TAPES TO FREE THE INTERENGAGING LOOPED PORTIONS OF SAID MONOFILAMENTARY THREADS FROM SAID WIRE; AND BEATING SAID INTERENGAGING PORTIONS OF SAID MONOFILAMENTARY THREADS TO FORM COOPERATING DEFORMATIONS THEREIN.