Abstract: The invention relates to a machining method for the machining of a workpiece (1) by means of a machining apparatus, including a control and/or regulating unit and a program-controlled data processing unit as well as a manipulator with a machining tool (2) for the manufacture of a three-dimensional structure (3) by machining the workpiece (1) in the region of a curved guide surface (4).

Abstract: A prosthesis which is affixed to at least one tooth can be extracted from the mouth of a patient by an implement employing two discrete substantially disc-shaped jaws which are to be bonded to spaced-apart portions of the external surface of the prosthesis by a rapidly setting adhesive. The jaws are permanently or separably connected to spaced-apart portions of an endless cable or to the end portions of a cable of finite length, and the cable is engaged by a follower of a tool which is used by a dentist to pull the cable and to thus detach the prosthesis from the at least one tooth. The adhesive can be polymerizable in response to exposure to light (such as ultraviolet light) which is transmitted thereto through the jaws by an optical conductor.

Abstract: The apparatus for forming and applying a substantially strip-shaped powder layer onto a weld seam of a can body, comprises a spray head including a spray chamber. A powder supply device supplies a powder composed of powder particles transported by a carrier gas and in the form of a substantially bundled powder jet into the spray chamber of the spray head. The spray chamber is provided with a spray opening which is open towards the weld seam and is located opposite the weld seam. Structure is provided for establishing a pressure in the spray chamber which is lower than the pressure of the surrounding stmosphere to ensure retention of the bundled powder jet entering the spray chamber and to prevent formation of a spray cloud of the powder particles of the bundled powder jet composed of the powder transported by the carrier gas.

Abstract: In order to apply a strip-shaped powder layer onto the inside of a can body to cover a welding seam of the can body in a controlled manner, the can body is moved in a predetermined direction over a spraying head transporting the powder, due to the kinetic energy imparted thereto by a moving air current, to an elongated opening of the spraying head. This elongated opening flow communicates with a spray chamber of the spraying head and is located opposite the welding seam of the can body. While the can body moves past the spraying head there is formed a strip-shaped powder layer at the welding seam without any cloud formation of the powder in the spray chamber.

Abstract: A guide rail serves for bringing together the edges of blanks of sheet metal rolled to form cylinders. The guide rail contains curved guide slots for the sheet metal edges. The guide slot bases are planar and converge toward the exit end of the guide rail. The sheet metal edges guided in the curved guide slots tend--after a first weld point has been made--to translate toward one another due to their innate elasticity.

Abstract: A strip-shaped powder layer is applied onto a weld seam of a container so that powder/gas mixture is supplied into a chamber having a lower pressure than in the surrounding atmosphere, is statically charged there, and partially applied onto the seam.

Abstract: A can fabricated from sheet material or stock of small thickness contains a can body comprising closely adjacently situated circumferential beads of high precision and mutual parallelism which impart high strength to the can body in both axial direction and radial direction.An apparatus for forming precision beads on cans formed of sheet material or stock comprises two cylinders rolling-off upon one another and provided with ribs. The cylinder, forming the inner tool, is provided with recesses or gaps in the ribs which are positioned vertically above one another to form axially parallel beads.

Abstract: A can formed of a thin-walled material, especially sheet metal or metal plate, whose can body is provided with beads extending essentially in axial direction and circumferential direction for the purpose of increasing the strength of the can bodies. In particular, these are provided primary beads extending in a first direction, and protuberances or raised portions forming auxiliary beads extending essentially perpendicular to the primary beads flow into or continuously merge with the primary beads.

Abstract: A method and apparatus for beading the bodies of metal containers, wherein container bodies are rolled between an inner tool and an outer tool, for instance inner and outer rolls, in order to increase their strength. To prevent sliding of the container at the inner and outer tools the container body is coaxially retained with respect to the inner tool. The outer tool is then radially moved, during the beading operation, towards the inner tool, and then the outer tool is rolled upon the inner tool and the intermediately disposed container body.

Abstract: In an apparatus for applying a protective substance to a welding seam of a metallic sleeve, including a frame, a container disposed within the frame holding a protective substance, a drivable applicator roller disposed in the container at least in part contact with the protective substance and applying the protective substance to the seam of the metallic sleeve within a substance transfer region, and wherein the sleeve moves towards, past and away from the applicator roller, comprising in combination therewith, a stripper disposed within the transfer region on each side of the seam removing any excess substance leaking away laterally from the seam.

Abstract: An apparatus for applying a protective coating to the inside of the welded seam of cans. When fabricating cans which are provided at their inner surface with a protective coating it is necessary, following the welding operation, to apply to the region of the welding seam the then missing part of the protective coating. Prior techniques were unable to achieve any optimum application of the seam-coating which would reliably cover the welded seam. If the fabricated cans are particularly intended for use for canned foods this then is dangerous to the health of the user. With the apparatus of the invention the protective coating is applied by means of a driven applicator roll to the welded seam. By suitably selecting the outer or jacket surface of the roll and a scraper as well as the rotational speed of the roll it is possible to optimize application of the protective coating.