| 摘要 |
A tight end detector for tufting machines is disclosed which includes a modular switch bar assembly, a switch contact forming PC board thereon having a conductive stripe, insulating strip, a leaf-metal electrical contact member having parallel contact finger formations overlying the conductive stripe of the PC board and a thin cover layer overlying the bar, PC board, insulating strip, and electrical contact member to provide a wear surface against which yarn ends of the tufting machine may bear.
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