| 摘要 |
The disclosure describes an apparatus to move, individually and at a controlled rate, sawlogs and tree stems from a first multiple feeding station to a second station situated at a higher level than that of the first station; it comprises a frame and two sets of movable plates, both extending in parallel vertical planes. A system of levers is connected to the two sets of movable plates so as to serve as support and to supply them with a trajectory defining an arc of a circle. A rotary motor, a drive lever and a link cooperate to provide this trajectory with a sinusoidal-type acceleration.
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