| 摘要 |
331,075. Duesenberg, F. S. Jan. 28, 1929, [Convention date]. Torsional vibrationdampers. - A damper for the crank-shaft of a high-speed multicylinder engine comprises vessels containing liquid such as mercury constrained to rotate positively with the shaft, and acting by momentum and centrifugal force as a yielding damping medium As shown, liquid containing cylinders 10 ane bolted in balanced relation to one of the crank. webs a remote from the engine flywheel. The cylinders are closed by screw-caps 14, and house cylindrical sleeves 17 carrying baffles 18. Each cylinder is filled to about 94 per cent capacity through an aperture closed by a gasketseated screw-plug 19 and the liquid content is readily variable. In a modification, the aperture and plug 19 are omitted, the liquid being housed in a sealed container rigidly held in the cylinder by the screw-cap 14. This container, which is sealed by welding and is without baffles, is replaceable by one holding mone or less liquid. In a further modification, a pair of cylinders is bolted to each side of the web, which is embraced by flanges joining individual cylinders of each pair. No baffles are provided and liquid is introduced into each cylinder through a screw-plugged diagonal aperture at its lower end. |
