| 摘要 |
Two gate sides are pivoted within a base for substantial parallel swinging movement towards and away from one another by means of a handle on one support post of the components. A cross-over chain at the other ends of said support posts transfers movement of one gate side with the other. The handle incorporates a locking mechanism which is disengaged when the handle is lifted for gate side movement but is engaged when the handle is lowered thus maintaining the gate side lock in position.
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