| 摘要 |
The projectile housing is made with thin-wall section at least in the central third of the housing. In addition, internal projections are provided on the housing walls in order to support the thin-wall section of the housing on the clamping arms of the weft thread clamp. In one embodiment, the thin-wall section may be formed by a sleeve which is joined in opposite ends to the remainder of the projectile housing. Alternatively, the sleeve may extend to the rear end of the housing while being supported on enlarged jaws located on the ends of the clamping yarns.
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