Abstract: A displaceable inclined hoist has conveyor cars which can be moved up and down along two tracks by cable lines driven by windlasses, where the tracks together with the windlasses are located on a support construction, which is mounted in the region of its upper end around a horizontal axle on a displaceable support structure. The support construction can be pivoted in the perpendicular plane with the aid of a drive where the pair of tracks, which have different track gauges, lie one above the other in their middle region and lie in one plane in their end regions. The pairs of tracks lying one above the other, together with the support construction, have a separation distance from each other which provides clearance for the passage of the conveyor cars.

Abstract: A bucket wheel cutting device with two cutting wheels for a floating dredge with suction tube conveyance, has its suction tube arranged to end in two suction chambers separated by a central partition, one of the cutting wheels being provided at each of the two sides thereof. The suction chambers can be closed alternately, relative to the suction tube, by means of an adjustable flap.

Abstract: Roller-path system for the transportation of persons and goods, having an endless tread-plate band reversed around a horizontal axis as well as either a freely supported or a roller supported traction chain and self-supporting tread plates, each plate having two pull and two drag support-rod parts arranged close to the slate corners, respectively, opposite each other, where these plates can either directly support themselves, freely supporting rollers and the pull support-rod parts in addition to the traction chain, or can indirectly support themselves, having the pull support-rod parts mounted in traction chains with intermediate rollers and fork-shaped tread-plate resting elements which are attached by drag support-rod parts. The support-rod parts are provided as replaceably arranged system-adaptable pull and drag bolts.

Abstract: A multi-function directional handle with control elements mounted for turning in both directions is arranged as a single structural unit, in which unit an axially supported control spoke with hand-grippable, individually movable control levers at its ends is provided adjustably fixed in a position within the region of grip in front of the driver's seat of a construction machine. The control levers each define an opening, wherein finger-displaceable dump lever is mounted in each such opening, the axes of swing of the control and dump levers extending, approximately parallel, to the pivot axes of the controlled tool parts, and the direction of turn of the human control movements agreeing with that of the movements controlled.

Abstract: Person-conveying device of quiet operating design having a step-belt or pallet belt which is guided in guide rails by transport chains with step-chain or pallet-chain rollers as well as chain-guide rollers, the points of contact of the step-chain or pallet-chain rollers with the travel surface being spaced from the lateral guide surface of the guide rail.

Abstract: Method and apparatus for the remote-controlled connecting or separating of two coupling parts each of which is provided with mechanical form-lock elements and with control-line connectors, one of which parts is provided on the working tool and the other on the dipper stick or the like of a hydraulic excavator, which parts can be connected in force-locked manner by a hydraulic-mechanical locking device, each connecting or separating process comprising two successive individual processes.

Abstract: Arrangement for swinging an attachment holder for the equipment of a hydraulic excavator around an axis perpendicular to the platform plane of the upper carriage, in a working direction parallel to the longitudinal direction of the excavator chassis. The lower part of the boom is vertically swingably fastened to the attachment holder which in turn is pivoted to the upper carriage by two radial links which are mounted at each end for turning around a vertical axis. The upper carriage is pivoted to the chassis. Furthermore the attachment holder is operatively connected to an active setting member. It is the pivoting of the carriage relative to the chassis together with the pivoting of the attachment holder relative to the carriage which enables the movement of the attachment holder in a working direction parallel to the longitudinal direction of the excavator chassis.

Abstract: Tread plates having two grousers for chain-driven vehicles, in which the grouser development in the region of the bolted connection to the carrier chain has radii of curvature and the distance within a linearly developed region between two grousers is approximately equal to the distance between the outer tread grousers of the region of linear chain travel.

Abstract: An autowalk with individual step segments with a lower return travel coarse therefor, in which an elastic bridge closing the gap between step plates is provided between every two adjacent step segments.

Abstract: A power shovel comprises a boom which is supported on an undercarriage and can be lifted and lowered. A hydraulically operated shovel mechanism is mounted at a front end of the boom before pivoting about a horizontal axis. The shoveling mechanism carries a pivotable shovel and at least one cable pulley. A cable hoisting gear engaged with the boom is operable to move the boom. A cable of the cable hoisting gear is trained or reeved on the cable pulley of the shoveling mechanism so that the shoveling mechanism can be moved by the hoisting gear with movement of the boom.

Abstract: Heavy breaking giant excavator having a mining system with the following components: a boom having a feed chute and conveyor equipment at one end thereof; and sifting, crushing, and transfer equipment at the other end thereof, and a dipper boom arrangement is disposed on the end of the vertically supported, swivellable boom onto which mined material is fed. The dipper boom has a limited hydraulic capacity dipper disposed thereon.

Abstract: A safety device for passenger transporter systems for the prevention of the wedging in of foreign bodies, with a switching element, the latter serving to stop the transporter system, the switching element to be actuated from within the stationary part of the intake by means of horizontally moveable comb segments and/or a rotatably arranged carrier plate, the switching element comprises a switch which is operatively actuated via an angle lever, the latter being moved by means of a switch rod. One of the legs of the angle lever is connected with a push rod which can actuate the switch, the push rod being biased by means of a compression spring. The passenger transporter system upon displacement of at least one comb segment and/or upon lifting of the carrier plate as a consequence of pivoting about a pivot point is stopped by actuation of the switch by means of pivoting of the angle lever.

Abstract: A device for the paraxial kinetic control of a boom that can be swivelled perpendicular to the rotatable platform of a mobile lifting machine wherein there is provided at least one coupling rocker which is pivotally mounted on the boom and provides a pivotal connection for a plurality of points of application of force, two points of application of force being linked to the platform of the lifting machine.

Abstract: A sluing mechanism driven by one or more electric or hydraulic motors, for excavating or bulk handling machines comprises a pivotable discharger boom mounted on a rotary support or turntable, and a coaxially pivotable superstructure carrying further equipment. The sluing drives of the two coaxially pivotable parts of the machine are connected to each other in such a way that upon pivoting the superstructure, the discharger boom does not follow this pivotal motion. The sluing drive of the discharge boom is designed as a superposed gear and connected to a drive motor for separately sluing the discharger boom. The turntable is provided with a second discharger sluing gear which is driven by a motor having a weaker characteristic than the drive motor or motors for sluing the superstructure. The characteristic of the motor driving the second discharger sluing gear may be adjustable.

Abstract: A method and apparatus for controlling the horizontal motion of a double articulated crane comprises determining the angle about a common axis between a base member pivotally mounted on a crane post and a head member carrying a load application point on an outer end thereof. The angle can vary from 0.degree. to 360.degree.. A desired movement direction value is then set on a direction selector movable on a direction indicator. The value corresponds to a target position for the load application point. The desired movement direction value is adjusted by small increments to reach the target however. The desired movement direction value is broken up into two components, one aligned with the axis of the head and the other aligned with a perpendicular axis. The values of these two compartments are calculated as a function of the sin or cos of an angle of misalignment between the longitudinal axis and the direction of the selector.

Abstract: A two-speed transmission with hydraulic actuation of the shifting operations under load for hydrostatically operated work machines, particularly caterpillar-track excavators, having a planetary gearing provided with double planet gears, and having packs of discs which are arranged coaxially around the axis of the sun gear of the planet gearing and which act as a clutch or as a brake, respectively. The planet carrier of the planetary gearing is formed as a flywheel and the shifting step of the transmission which serves for starting the work machine is shifted by means of compression springs, and the parking brake, biased by springs, connects the clutch and the brake non-rotatably relative to the housing of the transmission.

Abstract: A hydraulic excavator, with a boom lower part, a boom upper part and a stick, for conversion to operation using a gripper with large ranges of action and lifting heights. A connecting piece which rigidly connects the boom upper part and the boom lower part is fastened to the boom upper part, and is formed with an eye. A hydraulic cylinder which serves to actuate the stick is swingably mounted on the eye by means of a bolt.

Abstract: A hydraulic steering assistor, which can be switched off, for a vehicle with a hydraulic pump, an electric motor and a relay, which vehicle is driven by an electromotor, runs on wheels and is actuated by means of a drive control. By means of a switch disposed in the drive control, the motor of the hydraulic pump for the steering assistor is turned on through a time relay (having an activatable delay time) and another relay, and during the rotation of the armature shaft of the electromotor of the vehicle the time relay receives pulses from a pulse generator in the electromotor preventing the activation (initiation) and thus expiration of the delay time, and the pump driving motor for the steering assistor is stopped only after the absence of the pulses while in the neutral position, causing activation of the time relay and then after expiration of the delay time, by means of the drive control and opened switch.

Abstract: A steering gear with pitmans arm, steering tie rod and steering gear connecting rod for a vehicle with optionally hydraulically boosted, mechanical steering or purely hydraulic steering, and a hydraulic pump, driven by the drive engine, being connected via conduits and a flow regulating- and pressure limiting-valve to a directional control valve from which, on the one hand a line extends to a steering mechanism which is actuated from the steering gear via a cardan shaft and from which lines extend to a two-directional control valve which is connected with the hydraulic cylinders of the front axle and, on the other hand a line extends to a steering valve which is actuated by means of the steering gear and the cardan shaft, oil under pressure flowing either through a line to the directional valve connected with the cylinders for the front axle or through a line to the directional valve connected with the rear axle.

Abstract: A device for placing escalators in and out of operation and having a system comprising safety switches, actuating elements and signal bodies. An outwardly swingable flap is provided having a rear side facing an interior of the escalator. Actuating elements for starting and stopping the escalator and monitoring elements are fastened on the rear side of the flap.