| 摘要 |
Crimper. …<??>There is provided between the two strands of each conveyor (17, 17') of a pair of conveyors a sealed box (22, 22'), of which one large face arranged substantially in contact with a working strand of this conveyor is formed from a perforated rigid plate (23, 23'). Means (26, 26') are provided for feeding compressed air into each box (22, 22'). This air, escaping by way of the perforations of these plates (23, 23'), generates an air cushion between each plate and the active part of the conveyor (17, 17'), the effect of this being to reduce considerably the sliding resistance of this conveyor (17, 17') on this plate (23, 23'). …<??>This arrangement appreciably decreases the tensions in the conveyors, thereby making it possible to crimp wider mats without disadvantage and to simplify the construction. …<IMAGE>… |
