| 摘要 |
<p>The automatic device for ten-pin bowling skittles (7-9) allows them to be raised individually towards the back when hit and to set them up again. Each skittle is suspended from a fixed frame (1) by a transversal axle (16) and can pivot backwards and forwards. Each skittle is joined, by a curved rod (11), to a counterweight (12), above and behind the axle, which pivots forwards when the skittle is hit. A transversal bar (22, 23, 24), in front of the rods, pivots concentrically to the skittle axle and is guided by T-shaped bars pivoting on the frame and moved by a cable (31).</p> |
