Abstract: The invention relates to a device for aligning overlapping ends of metal strips, particularly contact bands for photovoltaic solar cells, wherein the end of one of the metal strips is bent back. The device has an advance, displaceable first alignment element for aligning the upper end of one metal strip and a trailing, displaceable second alignment element for aligning the bent end of the other metal strip, and a contact element for the first alignment element and a contact element for the second alignment element. In this manner, a rapid and simple mechanical automated alignment of the overlapping ends of metal is made possible.

Abstract: The invention relates to a glass ceramic mass containing at least one oxide ceramic containing barium, titanium and at least one rare earth metal Rek; and at least one glass material containing at least one oxide with boron, at least one oxide with silicon and at least one oxide with at least one bivalent metal Me2+. The glass ceramic mass is characterised in that the glass material contains at least one oxide with bismuth, especially bismuth trioxide. The oxide ceramic is especially a microwave ceramic of formula BaRek2Ti4O12, Rek being neodymium or samarium. The composition of the oxide ceramic remains essentially constant during the sintering of the glass ceramic, enabling the material properties of the glass ceramic mass, such as permittivity (20–80), quality (800–5000) and Tkf (±20 ppm/K) to be specifically predetermined. The glass ceramic mass is characterised by a densification temperature of under 910° C.

Abstract: The invention relates to a glass ceramic mass containing at least one oxide ceramic containing barium, titanium and at least one rare earth metal Rek; and at least one glass material containing at least one oxide with boron, at least one oxide with silicon and at least one oxide with at least one bivalent metal Me2+. The glass ceramic mass is characterised in that the glass material contains at least one oxide with bismuth, especially bismuth trioxide. The oxide ceramic is especially a microwave ceramic of formula BaRek2Ti4O12, Rek being neodymium or samarium. The composition of the oxide ceramic remains essentially constant during the sintering of the glass ceramic, enabling the material properties of the glass ceramic mass, such as permittivity (20-80), quality (800-5000) and Tkf (±20 ppm/K) to be specifically predetermined. The glass ceramic mass is characterised by a densification temperature of under 910 ° C.

Abstract: A rolled-up bale formed of straw, hay or the like is covered with a plastics netlike band which has an end portion partially overlapping the periphery of the bale and self-held on that periphery because the rough outer particles of the straw bale penetrate the mesh of the netlike band.

Abstract: A system comprises individual units (11, 12, 13, 14, 15, 16) with independent conveying means, which convey work carriers (19) on which are arranged a plurality of workpieces (53). The units do not have mechanical drive connections and can be freely connected or combined with one another. On their sides, the work carriers (19) have teeth, in which engage the pinions on the units. On some of the units, these pinions have a freewheel, so that the relatively long work carrier from the previous unit can engage wtih the following pinion, without the drive already running, or without overrunning the same. The assembly system has buffer units (12) for the intermediate storage or work carriers, conveying units (14) for rectilinear conveying, pivoting units (15) for pivoting the work carriers (19) into a different running direction, as well as work carrier units (13, 16), working without or with indexing and provided for assembly and machining by automatic machine tools or assembly machines or manually.

Abstract: This invention relates to an improvement in a roll crusher which crushes loaded material by impact and pressure, comprising a crusher housing, a loading hopper, a rotatable roll holding impacting tools, and fixed or adjustable crushing bars mounted to the crushing wall of the crusher housing, the improvement comprising two mutually oppositely rotatable rolls, each independent of the other and adapted to crush the material, mounted together with two oppositely located crushing walls in one common crusher housing, and a roof-like chute means mounted above a gap between the two rolls and adapted to distribute the material in the hopper and feed it to crushing regions.