| 摘要 |
<p>In a shuttle box with two plates (1, 2) forming the bottom thereof and a fixed guiding wall (4), a resiliently- mounted swell (6) is arranged, opposite the fixed wall (4), constructed as a bar with deep saw cuts (21) at uniform intervals over at least 3/4 of its length to act as a flexible member with stiff extensions (22, 23). Spring force is applied to each of the end pieces and to the flexible portion of the bar. The swell (6) is made of bonded plywood with vibration-damping properties. <IMAGE></p> |
