| 摘要 |
<p>The arrangement comprises a two-armed movable lever, which is swivel-supported on the loom and which is held by a warp thread, found in a stretched state and guided through a yarn guiding eyelet on the one movable lever arm, countering the effect of a spring means, which engages on the lever arm that is free of eyelet, and which is in a regulating position, which compensates the alternating tension on the warp thread, with the movable lever closing an electric circuit when brought into signal position as a result of the unstretched or missing warp thread. Thereby, the movable lever arm comprises a spring wire, the eyelet-free lever arm of which, stands in the regulating position of the movable lever on a stop, and of which the carrying arm, with the eyelet, bends under increasing tension in the direction of withdrawal of the warp thread, and, it must be added, that at least one further stop is disposed in the deflection path of the arm carrying the eyelet, in order to vary the deflection characteristics thereof.</p> |
