| 摘要 |
A lever is pivotally connected to the upper part of a loom frame on a horizontal axis and carries a roller at one end that normally is held by the lever in a predetermined central position and that supports an upper cable that carries a pulley at each end. A lever cable hangs from the other end of the lever and supports a vertically movable floating member. An intermediate cable hangs from each pulley and the four ends of these two cables support four vertically movable harnesses. With a four harness loom, treadles below the harnesses are connected by cables to the harnesses and the floater in such a way that no matter which treadle is depressed the height of the shed will always remain the same.
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