| 摘要 |
369,245. Indiarubber springs. LORD, H. C., 361, West 5th Street, Erie, Pennsylvania, U.S.A. Nov. 13, 1930, No. 34163. Convention date, Nov. 18, 1929. [Class 108 (iii).] An elastic support for a vibrating element such as an engine is adapted to interpose comparatively small resistance to movements of limited range in various-directions transverse to one another, but to introduce high resistance to movements beyond the limited vibration range. The arm 19 of the engine of a motor vehicle is supported from the frame 23 by an annular rubber support 10 vulcanized to inner and outer sleeves 9, 11 preferably so as to be in radial tension. The outer sleeve is secured in the end of the arm 19 while the inner sleeve is mounted on a bolt 22 fixed to the frame 23. Small vibrational movements of the engine support 19 transversely of the bolt 22 are comparatively free, but larger movements are largely resisted when the collars 17 engage the thin layer of rubber at the upper and lower ends. The rubber sleeve 10 is so shaped in relation to the collars 17 that contact between the two occurs normally round their inner peripheries close to the sleeve 11. Small vertical vibrations thus take place freely, but larger vibrations upwards or downwards are abruptly checked when the clearance between the outer parts of the collars and the rubber is. taken up. Specification 297,315, [Class 108 (iii), Springs &c.], is referred to. |
