Abstract: A method for determining and correcting positional errors or deviations which occur when measuring the position of a point in space, or when positioning to a point which has a specific position in space, where the position refers to a specific coordinate system, such as a rectangular coordinate system. The method comprises making a comparison between a multiple of measured values and at least one reference, and determining a correction on the basis of this comparison, wherewith a positionable member, such as a contact probe, a tool holder or corresponding device (1, 13) is moved to a given position in space during the measuring or positioning process. The method is particularly characterized in that the reference consists of a geometry of known kind, and in that the measured values are correlated to a geometry of known kind, this correlation being used to calculate corrections for the coordinate axes of the system. There is also an apparatus for carrying out the method.

Abstract: A service box for deposit of valuables for a subsequent feed down through a delivery aperture to a vault or safe chamber. The service box has an insert aperture with a lockable insert aperture closure. The service box below the insert aperture has a fixed base projecting approximately halfway to the back wall and providing the delivery aperture and includes an inner box formed by a roof, side walls and back wall, with open front and open base. The inner box is mechanically reciprocable and a scraper, fixed on a side of the inner box near its open end, reciprocates with the inner box back along the service box fixed base. A sliding hatch which slides horizontally is located below the service box fixed base for closing and opening the delivery aperture, being connected to the inner box by linkage so movement of the sliding hatch and of the inner box is in opposite directions. An electric motor is used to reciprocate the inner box and the sliding hatch.

Abstract: A motor-driven rail-vehicle with a drive system including an electric motor and drive wheels is provided with an oscillation sensing member which senses oscillations within a pre-determined frequency range of an electrical quantity of the drive system, such as the armature current or voltage, and forms a signal representing such oscillations. This signal is compared with a signal corresponding to a predetermined threshold value, and the tractive force of the motor is reduced in response to an increase of the oscillation amplitude above such threshold value.

Abstract: For counteracting slipping and skidding in a motor-driven rail vehicle, the acceleration of the driving wheel is sensed and is used to control the torque of the driving motor. The arrangement includes a device which is responsive to an absolute value of the acceleration which exceeds a predetermined first value to reduce the torque, and to a decrease in the absolute value of the acceleration to a second value to increase the torque. The torque reducing arrangement reduces the torque at a predetermined rate until a low first torque value has been reached, then reduces the torque at a lower rate until the predetermined second low acceleration value is reached, and thereafter increases the torque, the reverse of this procedure is followed when increasing the torque.

Abstract: In a motor-driven rail vehicle, an arrangement is provided for sensing oscillations in the drive system occurring in a predetermined frequency range, and to reduce the torque of the motor if the oscillation amplitude sensed thereby exceeds a predetermined threshold value.