Abstract: In order to achieve the situation where a pivotably mounted structural part, under the action of an adjusting force, is made to move indeed automatically but merely with braking and damping action, and thus at a reduced speed and with reduced kinetic energy, provision is made for the hinge which mounts the structural part to be equipped with a pivot brake, of which the braking force applied over the pivoting distance is smaller than the adjusting force and is adapted to the progression of the adjusting force over the pivoting distance. In selected regions, the braking force of the pivot brake may be greater than the adjusting force, in order to retain the structural part in these regions. The braking work performed by the pivot brake is advantageously calculated so as to absorb 20% to 25% of the adjusting work performed by the adjusting force.

Abstract: In order to keep the braking moment in doors with a pivoting brake for the continuously progressive braking moment variation with different inclinations of the pivoting axis of the doors to the vertical within a determined range, rules given for calculating said braking moment, especially in relation to the braking moment thereof causing the door to be unintentionally closed and for an advantageous variation of said braking moment over a door pivoting angle.

Abstract: In order to permit a fast, precisely centric fastening of rotating tools, such as drills or milling tools in clamping sleeves, of such clamping sleeves or of workpiece holding devices, such as clamping chucks 4 in spindles 1 of turning machines, respective holding surfaces 9/10, 23/24 are provided in the respective parts to be connected with one another with profiles 11, 12, 25, 26 which are coordinated with one another in pairs and which each have at least two wedges 13, 15. The wedges rise over imaginary cylindrical reference surfaces 14, 16 radially toward the outside and inside and each drop again steeply onto the reference surfaces and are offset in the circumferential direction by identical angles and have a joining gap in a joining position.

Abstract: A process for fastening at least one part, such as a cam, gear wheel, disc, etc., onto a shaft in a torsionally resistant manner. The process includes a combination of features, including threading the part with a mating play onto the shaft, the part seating on the shaft with a seating surface which has a profile of a plurality of curved spline surfaces which are preferably offset by the same angles around the circumference and gradually rise up inwards over a cylindrical reference surface and fall back down again onto the reference surface. The process also includes the feature of eliminating the mating play between the shaft and the part and the feature of turning the part relative to the shaft into an intended position for fastening after eliminating the mating play. The torque required for turning the part into an intended angular position can be measured and can serve as a check to determine if a desired frictional engagement has been achieved.

Abstract: In order to fasten parts, such as cams, gear wheels, and discs, in a torsionally resistant manner on a hollow shaft, it is proposed to expand the shaft by pulling an expanding drift through the shaft after threading on the parts, which are provided with slight mating play, and consequently to establish at least frictional engagement between the shaft and the parts. A particularly secure connection can then be achieved when the bore of the parts is provided with a profiling into which the material of the shaft displaced by the expanding drift is pressed. Expansion of the shaft may be performed in stages by using an expanding drift having a staged increase in its effective diameter or successively using a plurality of expanding drifts of respectively larger effective diameter.

Abstract: A top bar for carding machines formed from an elongated hollow cold drawn annealed profile. The annealing relieves any stresses developed in the profile during the cold drawing and a dimensionally stable top bar results therefrom.

Abstract: A top bar for carding machines formed from an elongated hollow cold drawn annealed profile. The annealing relieves any stresses developed in the profile during the cold drawing and a dimensionally stable top bar results therefrom.