Counter device especially for protecting officials in post offices and the like

摘要

Counter device especially for protecting officials in post offices and the like, which device comprises at least one fixed window pane and two movable hatches which are arranged at some distance from one another and which can be opened when large items are handed over, which hatches are displaced with the aid of means operated by a pressure medium and switched in such a way that, when the first hatch is opened, the second hatch is closed and this second hatch is opened again only after the first hatch is virtually closed.