Abstract: A group control for elevators in which the allocations of the individual cars of double cars in an elevator group to stored floor calls can be optimized with respect to time, and newly occurring floor calls can be assigned immediately. A computing device is provided for each elevator to calculate operating costs of each car corresponding to the waiting and delay times of passengers at the floor and aboard the car with regard to each floor. The operating costs are reduced if unidirectional calls exist on the calculation floor and on a directly adjacent floor, and/or if coincidences of car calls and such floors occur. The operating costs of the two cars of a double car are compared with one another and the smaller costs are stored in a cost memory. During a cost comparison cycle, the operating costs of all elevators are compared with one another floor by floor via a comparator, whereby an allocation instruction is stored in an allocation memory of the elevator with the smallest operating costs.

Abstract: The load-weighing apparatus faultlessly detects even smallest load variations in the lower load range. For this purpose wire strain gauges are mounted at structural parts or components of the elevator car and these structural parts or components are subjected to bending under the load to be weighed. The wire strain gauges are interconnected to form a bridge circuit. An amplifier circuit is connected at the output side of the bridge circuit and has a higher gain in the lower load range. When an input voltage corresponding to a predetermined load occurs at the amplifier circuit, the gain of the amplifier circuit is switched to a lower value. It is thus possible to detect loads throughout a greater range of loads.

Abstract: To each panel is associated a panel suspension and guiding arrangement which comprises rollers cooperating with at least one guiding rail and through which the panel is slidably supported on the door frame. An extension of the guiding rails laterally beyond the door frame is avoided, in closing position of the door, through the provision of the panel suspension and guiding arrangement which is constructed to comprise a fixed guiding rail along which moves at least one roller movable with the panel, and a guiding rail movable with the panel and displaceable over a roller fixed in position. Such an arrangement facilitates the transportation, the handling and the mounting of doors, namely fully equipped landing doors, whether they be of the central opening or telescopic panel type.

Abstract: With this set or reference value transmitter which is controlled by a set or reference value clock pulse generator or transmitter regulation of the running-up or acceleration of electric motors, such as asynchronous motors, can be kept under control also in the upper rotational speed ranges of the motor by adapting the displacement path-reference value characteristic curve to the displacement path-actual value characteristic curve. For this purpose the reference value transmitter comprises a correction member, by means of which the displacement path-regulation deviation is supervised in such a way that if the greatest displacement path-regulation deviation associated with the maximum power of the adjusting or positioning members is exceeded, the clock pulse frequency of the reference value clock pulse transmitter is reduced proportionally to the excess.

Abstract: The transport installation comprises a reception station and a transport vehicle between which a load can be displaced in a horizontal plane by movement of the vehicle. To avoid the necessity of raising the transport vehicle or of having recourse to an auxiliary vehicle, an endless conveyor, extending in the direction of displacement of the transport vehicle is provided at the reception station. The endless conveyor comprises a horizontal portion for receiving the load and this portion is preceded by a downwardly inclined portion intersecting the horizontal plane along which the load can be transported. At least one drive wheel, co-operating with a corresponding drive element carried by the transport vehicle, is provided at the reception station for driving the endless conveyor at the same time as the transport vehicle.

Abstract: By means of the group control the average time losses for the passengers resulting from the waiting time at the floors and the return travel time are minimized. Therefore, the number of entering stops causing a minimum of time losses is determined per elevator car on the basis of calculations. The number of entering stops is stored in monitoring or control counters by means of which the allocation of down hall calls is limited to the number stored for each car. The down hall calls are combined by means of a switching circuit to form groups of chronologically inputted or incoming hall calls of a volume corresponding to the number of hall calls respectively stored in the monitoring or control counter. In the case of an increase in the hall calls, the earliest group of hall calls is first increased and the latest group of hall calls last.

Abstract: The lift landing door frame arrangement contains horizontally adjustable lateral caulking or sealing elements arranged at uprights of the door frame and a vertically adjustable top caulking or sealing element associated with the topside of the door frame. To avoid retouching due to the caulking elements at the time of placement of the lift landing door frame arrangement and to avoid the formation of gaps in the door frame after placement, each lateral caulking element comprises a rectangular sheet metal panel of a length which exceeds the height of the door frame. Each lateral caulking element engages with and is fixed to the interior of the related upright. Each lateral caulking element is also guided for simultaneous vertical and horizontal adjustment at a guide plate carried by the related upright. The vertically adjustable top caulking element is constituted by a U-shaped sheet metal strap which is disposed astride the front parts of the door frame and is laterally guided thereat.

Abstract: With this circuit arrangement a plurality of control commands can be inputted into a microcomputer system by means of only a single input channel and the microprocessor is relieved of the operation of scanning the peripherals for detecting the presence of control commands. By means of a release or enabling signal the microprocessor signals its preparedness for receiving interruptions, and the release or enabling signal activates a scanning and comparator unit arranged between an interrupt requirement input of the microprocessor and a peripheral unit. Thereafter the scanning and comparator unit scans control command transmitters grouped together in the peripheral unit and characterized by an address and compares the switching state thereof with a switching state which is stored under the same address. If the two switching states are different, there is generated an interrupt requirement or requisition and the stored switching state is adapted to the switching state of the control command transmitter.

Abstract: The guiding apparatus comprises substantially rectangular rail holders and L-shaped rail holders. Main and follower travel rails or tracks are supported by such rail holders and there are provided side plates at which there are mounted the rail holders, the side plates being supported upon a carrier frame. These rail holders are provided at their attachment or fastening side with at least two respective centering protuberances or nubs or the like which engage into corresponding centering openings provided in the side plates to which the rail holders are fastened. The rail holders possess, at their rail contact side, a dovetail clamping device which, in cooperation with a dovetail profile or section extending along the underside of the travel rail or track, to reliably and easily releasably holds the travel rails and the rail holders by virtue of a clamping action which is exerted at all sides of the dovetail profile.

Abstract: The multiprocessor system enables rapid comparison of results determined from input data at the individual microprocessors. During a first phase of the comparison the results which are to be compared are transferred from the individual microprocessors to counters in connection logic components each of which is associated with an individual microprocessor. During a second comparison phase which is started by activating a comparison line to which all the connection logic components are connected via a bus driver, the counters are simultaneously started to count for periods of time each of which corresponds to the result which has been transferred to the respective counter. The comparison line is deactivated by the counter with which the longest counting period is associated. For the purpose of determining the deactivated state, the comparison line is connected to respective inputs of the connection logic components.

Abstract: A transfer apparatus wherein the conveyed loads, which need not absolutely possess a square or rectangular cross-sectional area or configuration, are received by or delivered from a transport vehicle, without the load itself having to experience a tilting movement, when it departs, for instance, from a stationary chain conveyor and is taken-over by the chain conveyor of a displacement carriage. The gap between the stationary chain conveyor and the chain conveyor mounted upon the transport vehicle is bridged by the laterally movable displacement carriage. The related chain drive serves for moving the conveyor chains of the chain conveyor and the displacement carriage. An alternately effective brake-locking device controls both movements. With blocked conveyor chains the displacement carriage, depending upon the direction of rotation of the drive motor of the chain drive, moves laterally in one or the other direction until reaching a related lateral stop or impact member.

Abstract: The equipment for maintaining the spacing of track-bound vehicles (1) shall prevent collisions of the vehicles (1). For this, light emitters radiating rearwardly and laterally in desired directions are provided at the rear on the vehicles (1) and light receivers receiving from in front and from the sides in desired directions are provided at the front on the vehicles (1). A drive control reduces the speed of a vehicle (1) with increasing received light intensity, i.e. with decreasing spacing from the vehicle (1) travelling immediately ahead. The equipment is usable for floor conveying plants with vehicles (1) travelling at small spacings one behind the other. An embodiment of the equipment is suitable for vehicles (1) travelling forwardly and rearwardly. A further embodiment of the equipment is suitable for vehicles (1) on neighboring travel paths. Special measures are provided for compensation of the influences of ambient light.

Abstract: A light barrier is restricted to detecting blockage in a limited, constant region before the closing edges of a lift cabin-twin door. Two light emitters or transmitters are displaceably arranged in the door sill and are operatively associated with entrainment elements fastened to the lift cabin doors. The light emitters are synchronously displaced with light receivers mounted at the upper edges of the cabin doors. To increase reliability of operation, the lower edges of the lift cabin doors are provided with cleaning devices which clean the light exit locations of infrared luminescent or light-emitting diodes forming the light emitters during every opening and closing operation. Thus, the cleaning device of one door is arranged to clean the infrared luminescent diode of the light emitter of the other door and vice versa.

Abstract: A contact-controlled capacitive switching means utilized as a floor or cabin calling transmitter for lifts or the like is designed such that travel or drive commands for the lift are prevented from being generated by the action of heat or, if generated, from being further transmitted to a lift control system. Therefore, a thermal circuit breaker is interconnected between an actuating element, such as a contact button and a coupling member connected to an input of an oscillator. The thermal circuit breaker may be mounted directly at the contact button or at a mounting plate carrying the contact button. A further thermal circuit breaker is interconnected between an output of the switching means and a connection terminal of a signal transmitting line of the lift control system.

Abstract: In the design of electrical switchboards or control panels or the like there are employed push buttons for the actuation of a switch for performing a desired control function or operation. There is disclosed a push button containing a solid or rigid front impact flange member and a rear impact cam or detent which is arranged at the tip of a tongue-like spring member or resilient tongue and possesses an inclined guide surface. The push button can be mounted in the cover plate of an assembled switchboard or control panel or the like, without the need for any auxiliary tools, and is positively self-retained thereat without there being required access to the rear side of the cover plate or to the interior of the switchboard panel. A spring-biased support member of a switch arranged rearwardly of the cover plate presses the push button at its near impact surface against the rear side or face of the cover plate and retains such in the desired rest position.

Abstract: An apparatus for controlling the access of a plurality of microprocessors at a data line. The microprocessors are connected by interface components or blocks, logic switching circuits and bus drivers with two lines or conductors. An access request or demand of a processor initiates a signal change at the first line. This signal change causes the transformation of data which is specific to the processor into a delay or a priority signal, upon the occurrence of which there is accomplished a signal change of the second line. As a function thereof there appears at an input of the interface component a signal change which is indicative of the availability of the data line. Upon simultaneous occurrence of access requests or demands of a number of processors the signal change of the second line is brought about by that processor whose priority signal possesses the smallest delay.