Abstract: A thermal printer with a printing head is described for the printing of differently thick print media, especially label course or the like, in which opposite the printing head constructed as a pressure beam there lies at least one transport roller, and the medium to be printed is led through the input gap between printing head and transport roller. So that differently thick print media, especially label courses, can be printed with little wear on the printing head, the invention provides that the pressure beam is made liftable and lowerable.

Abstract: A thermal printer with a printing head is described for the printing of differently thick print media, especially label course or the like, in which opposite the printing head constructed as a pressure beam there lies at least one transport roller, and the medium to be printed is led through the input gap between printing head and transport roller. So that differently thick print media, especially label courses, can be printed with little wear on the printing head, the invention provides that the pressure beam is made liftable and lowerable.

Abstract: For recirculating the exhaust gas of an internal combustion engine, a recirculation line is provided which leads from the exhaust side to the intake side of the engine. A valve for controlling the recirculation rate is disposed in the line, and in order to prevent the formation of condensates in the line on the exhaust side when the valve is closed, a flushing line is provided which leads from the line segment on the exhaust side to a location point having lower pressure as compared with the exhaust side.

Abstract: A device for metering liquid yellow phosphorus into a rotating ball mill for the production of red phosphorus therein includes a stationary outer tubular structure surrounding an inner tubular structure rotatably mounted therein. A valve having a valve rod associated with it is installed within the inner tubular structure near its end close to the ball mill. A plug provided with a central bore receiving the valve rod is installed within the inner tubular structure near its end remote from the ball mill. A bellows surrounds a portion of the valve rod inside the inner tubular structure, the bellows being tightly connected to the plug and valve rod.

Abstract: The disclosure provides an electrolytic cell sealed in gas-tight and liquid-tight fashion. The cell is comprised of a box-shaped cell tank open at its top and provided with at least one intake duct, at least one overflow duct and at least one discharge duct. A cover is placed on the cell tank and two opposed flanges receiving electrode supporting frames are secured to the inside of the cell tank near the upper end thereof. A chemically resistant and electrically insulating coating is applied to the inside of the cover and cell tank and a plurality of semi-circular recessed grooves spaced apart from each other are formed in the upper rim portion of at least one of the side walls of the cell tank, the recessed grooves receiving semi-circular current beams projecting outwardly.

Abstract: The invention relates to a process for separating seminoble and/or noble metals from an aqueous solution having compounds of these metals dissolved therein by subjecting the solution to reaction with red phosphorus. More particularly, the solution is conveyed through a zone containing a layer of granular red phosphorus particles with a size of 0.01 to 10 mm, which may be used in admixture with active carbon.

Abstract: An arrangement for the web edge control comprises a web edge feeler having a sending and receiving nozzles arranged respectively below and above the side edges of the web which is moved includes a motor pump unit for generating the supply air and the fluid pressure for a control diaphragm drive. The control diaphragm drive comprises a diaphragm which is shiftable by pressure changes to operate an adjusting device for shifting the web for example by tilting its rotatable roller support or by shifting the support to one side or the other. The diaphragm is provided with a differential pressure so that one side is admitted in a zero position with the same pressure as the other side during a time at which the sending and receiving nozzles are partially covered by the web edges up to a desired degree for the zero position setting.