Abstract: An automobile sliding roof, adapted to be alternatively positioned, includes a rigid sliding cover guided with forward and rear sliding shoes on laterally-mounted guide rails in the automobile roof opening, thrust-transmitting cables engaging the rear sliding shoes, pivot bearings on the forward sliding shoes permitting pivotal action of the cover about a horizontal axis extending transversely to the sliding direction, guide blocks secured to the longitudinal edges of the cover into which guide pins mounted on the rear sliding shoes engage and by which the cover, from its closed position, can be pivoted such that its rear edge is above the automobile roof surface or can be rearwardly slid underneath the roof surface.

Abstract: A ventilator is positioned in the opening in a motor vehicle roof so that it can be moved between a closed position sealing the opening and a number of different oblique opening positions. Levers attached to the roof and connected to a shaft pivotally mounted on the cover affect the pivotal movement of the cover at its rear end. A mechanism is provided to selectively disconnect those levers from the roof to enable the ventilator to be fully removed, with the links attached to the ventilator.