Abstract: An apparatus for placing in order the servicing sequence of storey calls of an elevator system, comprising storage elements for storing the storey calls, storage transmitter means for controlling the storage elements, a scanner for scanning the storage elements, and a respective further storage element operatively associated with each storey being serviced. Each such further storage element has a first input connected with the related storage element serving to store a storey call and its output is connected by means of a logic circuit with a blocking device blocking infed and stored storey calls during a servicing period corresponding to at least one revolution of the scanner. A second input of each such further storage element is connected with the output of a release device freeing the blocked storey calls after completion of a servicing period in order to accomplish storey servicing during the following servicing period.

Abstract: An apparatus for selecting an elevator cabin at a transportation installation, especially an elevator system, for direct travel of an elevator group, controlled by means of a group control, possesses additional storey call transmitters and storey call storages. The storey call storages are connected with a call blocking device having infed thereto a first signal train or sequence produced during scanning of the storey call storages. The call blocking device possesses further inputs, to which there is infed information blocking already allocated calls, so that at its output there appears a second signal train or sequence no longer containing the allocated calls. This output is connected with a respective input of call allocation devices operatively associated with the elevators. The call allocation devices are operatively interconnected with one another by means of a switching circuit.

Abstract: An apparatus for selecting a storey call at a transportation installation, especially an elevator system, which contains storey call storages and a scanning device which continuously scans the storey call storages and produces a signal sequence containing the stored storey calls, as well as possessing a selector which signals the location of the elevator cabin. Upon coincidence of the elevator cabin location and the scanner position there is produced a coincidence signal which, in conjunction with an information signal signalling the operating state of the elevator cabin, is delivered to a selector circuit. Both signals act by means of a first NOR-gate and a storage upon a second NOR-gate of the selector circuit. Storey call signals which have been selected from the signal sequence produced by the scanner device and ordered in accordance with the time sequence of their input are delivered to a further input of the second NOR-gate.