Metal working – Plural diverse manufacturing apparatus including means for... – Slide fastener or slide fastener element
Patent
1981-04-29
1983-09-20
Briggs, William R.
Metal working
Plural diverse manufacturing apparatus including means for...
Slide fastener or slide fastener element
29408, 29766, B23P 1904
Patent
active
044047223
ABSTRACT:
An apparatus for forming an element-free gap or space section in a pair of continuous slide fastener stringers. In the apparatus, a support table has a guide groove for receiving the pair of fastener stringers along a longitudinal path. A pair of guide plates is disposed one on each side of the guide groove and extends thereover toward each other to define with the guide groove a guide channel. A pressure pad is vertically movable around a stationary die in the support table for clamping with the guide plate a pair of tapes. A punch has a sharp cutting edge so that, as the punch is moved toward the stationary die, the cutting edge enters a relatively small clearance between adjacent tape edges to cut a chain of interengaged coupling elements only at tape-side leg portions while the pair of continuous slide fastener stringers is simply placed in and along the guide channel. An ejector is disposed beneath the punch and is upwardly movable together with the punch to pull the cut coupling elements out of stitches holding the coupling elements to the tapes while the latter are clamped between the pressure pad and the guide plates without pulling the tapes laterally apart from each other.
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Briggs William R.
Yoshida Kogyo K.K.
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