| 摘要 |
The device comprises a toothed strap with saw teeth , which is fixed, at one of its ends, to the boot and carries a sliding U-piece on which a ratchet cooperating with the toothed strap is pivotably mounted. Above these teeth , the ratchet has a groove inside which the bar of a buckle integral with another part of the boot is engaged. The U-piece is provided with two hook-shaped recesses located opposite the groove . The hinging pin of the buckle, which at the same time acts as a tensioning lever, engages inside a groove . The ratchet pin is subject to a small degree of strain and accidental opening of the buckle due to pressure on the end of the latter is prevented. |
