| 摘要 |
An elevator tongue for connection to the forward end of a farm implement having wheels at its rearward end, the tongue having cooperating elements respectively affixed to the vehicle and attachable to a tractor, and being relatively movable, when released to do so, in a forward and rearward direction, movement in one direction being operable to lower the forward end of the implement to rest on the ground, and movement in the opposite direction being operable to raise the forward end of the vehicle from the ground to a normal transport height.
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