| 摘要 |
An articulated framework especially for retractably supporting a typewriter in a desk, said framework including bracket members for being fixed to a desk within a recess provided therein for receiving the typewriter and each bracket member having a pair of parallel links pivoted thereto with a typewriter support platform pivotally connected to the other ends of the links for movement in parallelism with itself between working and retracted positions. Each bracket member is provided with a connecting flange laterally offset therefrom which is fixed to the desk and the pairs of links are interconnected to move in unison. Counterbalancing spring means are provided to counterbalance the weight of the typewriter and arresting means are provided for restraining the links while supporting the platform in extended position. |
