| 摘要 |
Castor with a brake device and of the kind having two wheels mounted on a common axle extending through an intervening partition a bore having therein to receive the castor pivot rod. The wheels are retained on the axle by means of a locking member engagng the hubs from below and behind a flange on the hubs. By spring action the locking member is pressed against the hubs for braking the wheels and is released by increasing the load on the pivot rod. |
