Vereinigte Baubeschlagfabriken Gretsch and Co. Gmbh

Gretsch-unitas Gmbh Baubeschlage

Gerhard Schroder

Fritz Feucht

Dieter Mauckner

An arrangement for controlling the closing sequence of two wings of windows, doors, and the like, especially smoke or fire protection doors, which are closable by means of a door-closing device each. The two wings are a moving wing to be opened first and a resting wing to be opened subsequently, so that projecting edges of the doors which face each other come into contact with each other in the correct sequence. A control device is actuated primarily by the slide rollers of the door-closing device of the resting wing when the resting wing is opened. With the use of a control lever and a sliding member displaced by the control lever toward the axis of rotation of the resting lever, a locking member is pivoted into the return end region of the guide roller of the door-closing device of the moving wing. This locking member locks the final closing movement of the moving wing until the resting wing has been closed. The sliding member is maintained with the aid of a locking device in a swung-out position until the resting wing has again been closed. The guide roller of the door-closing device of the resting wing releases the locking device.

Arrangement for controlling the closing sequence of two wings of a door,

An arrangement for mounting a door closer to a stationary or movable door frame. The door frame is provided with a channel rail having longitudinally extending undercut grooves which form transverse guide tongues. Guide projections provided on the door closer are adapted to be received in the undercut grooves so as to be disposed behind the guide tongues. At least one thumbscrew is supported at the door closer and arranged so as to press the guide projections against the guide tongues to thereby mount the door closer at the channel rail.

Door closer mounting arrangement

A pivot bearing arrangement comprises a door closer, a door rotatable relative to the door closer, a shaft journal rotatably supported in the door closer, a journal extension connected in the axial direction for rotation with the shaft journal, the free end of this journal extension connected with the door, wherein the shaft journal and the journal extension are guided so that they are mutually nonrotatable. The improvement comprises mutually facing end surfaces on the shaft journal and on the journal extension provided in a conforming manner, axially aligned threaded bores provided in the mutually facing end surfaces of the shaft journal and of the journal extension, and a threaded pin inserted at either of its ends into one of the threaded bores.

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Tiefenbronn, Germany

Gerhard Schroder