Abstract: A machining device includes a toolholder (24) displaceable in three coordinates (X, Y, Z) perpendicular with respect to one another by means of three linear guides (23, 15, 28) and associated drives (25, 19, 30) on a frame of the device. The device is characterized in that the frame (1, 8) of the device is of an essentially U-shaped configuration and that the toolholder (24), retained in a shape-mating fashion, is displaceable on a carriage (23) extending transversely to the legs (1a, 8a; 1b, 8b) in the first coordinate direction (X) and the third coordinate direction (Z). This carriage, retained in a shape-mating fashion with its ends (22) on the legs (1a, 8a; 1b, 8b) of the frame, is displaceable along the legs in the second coordinate direction (Y). Preferably, the frame of the device consists of a U-shaped supporting stand (1) and of a rotary stand (8) having a U-shape and being swivelable thereon, the toolholder (24) being displaceable on the rotary stand in the three coordinate directions.

Abstract: A portable apparatus including a four-legged support that is equipped with adjustable support bases. The apparatus also includes a centering mechanism that includes rotatable eccentric discs, and a modified rotating unit, the rotating arm of which is provided with an adjustment mechanism that is equipped with a sensing device, and with a tracing device that is equipped with various copying templates and is coupled with a machining or processing tool for machining the rim of a flanged, flat, dished semi-ellipsoidal head in preparation for a welding seam connection with a tubular member to produce a circular cylindrical reaction vessel. The apparatus is installed in the upwardly open head coaxial to the axis of the latter. During each rotation of the rotating arm, the machining tool experiences a feed movement and an adjustment movement that is corrected for the geometry of the workpiece or head.

Abstract: The transfer of impact force from a mechanically, pneumatically, or hydraulically driven knock or impact-beating device, which is mounted externally of a container that receives dust-laden, hot, and/or contaminated gases, onto bearing or cooling surfaces which are installed within the container, and which are to be intermittently cleaned. The impact force is indirectly transferred via the container wall to a striker which is pressed against an inner wall of the container by a resilient power accumulator. Preferably, the striker has a mass equal to that of the knocking element of the knock or impact-beating device. Pursuant to one embodiment of a device for effecting transfer of the impact force, the striker disposed within the container is guided within a connector-like inlet of the container body. The cover part associated with the inlet has a central bore and, on that side thereof facing the interior of the container, has a projection which coaxially surrounds the bore.