| 摘要 |
303,139. Stoll, A. Dec. 29. 1927, [Convention date]. Rocking seats.-A tilting seat 1 is pivoted at 4 to a supporting pillar 3, and its motion is resisted by the spring 9 acting upon a plate 6 with which engages bars 10, 11 carried by the seat supports 2. The tension of the spring may be adjusted by means of the hand wheel 8. In the modification shown in Fig. 4, the seat can move in all directions. |
