| 摘要 |
The present invention is directed to a device for positioning planks or other articles which are to be set on a framework. The invention includes a platform having feet to stabilize the platform with respect to the framework. A connecting rod, a guide brace and a platen are all pivotally attached to the platform. The connecting rod has a proximal and distal end. The distal end of the connecting rod is attached to an end of the guide brace as well as the platen. The opposite end of the guide brace is pivotally attached to the platform. The proximal end of the connecting rod is pivotally attached to a handle assembly which in turn is pivotally connected to the platform. A rotational torque applied to the handle is transmitted by the handle assembly to the connecting rod which in turn causes the platen to apply a force to the plank or other article to be bent. An optional anti-reverse mechanism is pivotally attached to the platform and is biased into engagement with the connecting rod so that the connecting rod can be held in place and the handle assembly released when the plank or other article is to be set.
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