Abstract: In a method and device for applying and subsequently drying a coating on a hin rigid board, the board is conveyed in vertical position, either hanging from or standing on the conveyor. The boards are clamped at one marginal zone, which preferably extends in a direction of horizontal advance. In a coating unit applicator rolls are positioned on both sides of the path of the boards. The applicator rolls rotate on vertical axes. The coating liquid is fed to the applicator rolls by vertical slot orifice nozzles. In the drying zone nozzles and heaters for drying the coating are arranged symmetrically to treat both surfaces uniformly and to stabilize the vertical position of the boards. The method and device are particularly useful in applying a light sensitive coating to basic materials in the production of printed circuit boards.

Abstract: An annular seal assembly disposed between a shaft surface and a surrounding ousing, for example, a seal assembly for an aft-stern tube seal of a sea-going vessel, comprises a nonrotating annular seal element having a circumferentially segmented construction, the segments having overlapping ends. An inflatable annular member, concentrically disposed between the housing and the seal element, sealingly supports the seal element on the shaft surface at the same time providing some freedom for radial vibrating movements to accommodate shaft-eccentricities and radial vibrating movements of the shaft. The seal assembly includes means to admit a controlled pressurized fluid into the inflatable member. The pressurized fluid may be the outboard sea water or any water or air under pressure. The pressurized fluid is so controlled as to maintain a narrow clearance between the shaft surface and the segmented seal element for a lubricant, regardless of seal wear and variation in the pressure head of the fluid.

Abstract: A shaft sealing assembly containing a liquid lubricant uses an arrangement hich can accommodate shaft-eccentricities and vibratory movements which cause radial deflections of the shaft, without impairing the efficiency of sealing of the assembly. The assembly is of a type using a housing in which two flexible sealing rings are spaced apart from each other and mounted to be stationary on the shaft, at least one sealing ring being supported by a mounting ring. The mounting ring is capable of radially being displaced within the housing, when there is shaft-eccentricity, or when radial vibratory movements of the shaft occur. The mounting ring is nonrotatably supported from the inside of the housing by a resilient annular wall made of a sealing material. The arrangement comprises at least one inner annular chamber containing the liquid lubricant, and at least one outer annular chamber disposed radially outside the mounting ring, the two annular chambers being provided with a connecting fluid passage.

Abstract: A seal assembly for rotating shafts particularly for sterntube seals for ps comprises two slide rings mounted in a receiving ring and pressed against a counter-ring by means of the surrounding sea-water. Between the slide rings an annular space is formed into which a liquid medium is let. The outer slide ring being a hydrostatic seal is lifted by the liquid medium in the annular space against the force of a spring in the receiving ring so that a small amount of the liquid medium leaks out to lubricate the slide rings and to prevent entering of abrasive particles. The inner slide ring is a hydrodynamic seal and is urged into contact with the counter-ring by the hydrostatic head of the sea-water surrounding the seal assembly. The receiving ring is guided in the housing or on the shaft with some clearance so that the faces of the slide rings can maintain a position parallel to the counter-ring.

Abstract: A stern tube bearing for vessels is sealed off in a leakproof aft seal asbly which comprises at least one annular chamber between axially spaced sealing elements. The annular chamber is filled with a liquid for lubricating the sealing elements. The liquid is circulated in a circulation system through a separating tank. The head of the circulated liquid is lower than the head of a lubricant in the stern tube bearing which again is lower than the lowest possible head of the sea-water surrounding the aft seal assembly. Any sea-water or dirt entering into the annular chamber will be removed out of it by the circulated liquid and separated from it in the separating tank which can be provided with devices for supervising the circulation system. A forward seal assembly of the stern tube bearing may be included in the circulation system.

Abstract: A rudder arrangement for ships comprises a rudder blade having a horizontal ivision to form an upper and a lower rudder blade. Each rudder blade is controllable as a separate rudder blade via a rudder shaft and an associated rudder machine.

Abstract: An offshore lift platform comprises a platform proper with a plurality of pport legs arranged shiftable. Each leg is retained through the intermediary of latch hole rows arranged in horizontal and vertical spacings and advance means climbing in increments in that at the platform in the spacing of the latch hole rows upper and lower latches are arranged above one another. The lower latches are stationarily positioned at the platform. The upper latches are arranged height-adjustable relative to the platform via a positioner and are interconnected via a ring. The ring is formed by individual segment-like ring portions which are pivotally connected to one another. Each ring portion receives an upper latch. The lower latches are arranged height-adjustable via positioners.

Abstract: A stabilizing device for a ship comprising two rotors housed one within the ther for rotation in opposite directions and positioned on each side of the ship. The rotors are axially movable relative one to the other to permit the outer rotors to be alternately put into and out of action. Guide elements disposed downstream of the rotors and covering parts may be provided to reduce resistance to water flow.

Abstract: A supplementary jib for a floating crane having a derricking main jib is racterized in that the hinge (bearing) of the supplementary jib is located in proximity or coincides with the hinge of the main jib. The main jib is incorporated in the crane system by virtue of compression struts and guy ropes meeting at the head of the main jib.

Abstract: A floating crane comprises a main jib which can be deposited on deck and fed by a luffing rope about a hinge working in bearings that can be moved along a horizontal track on the deck of the floating pontoon.

Abstract: A method of and a device for extinguishing burning gases forming by evapoion of a low-temperature liquid gas stored in tank spaces and ignited upon entering atmosphere by random effects is described. The method and device include means for introducing a hydrocarbon (halone) such as difluorochlorobromomethane or trifluorobromomethane or mixtures thereof as an extinguishing agent into burning low-temperature gases underneath the root of the flame for achieving a chemical reaction with the burning low-temperature gases.

Abstract: An a.c.-fed temperature measuring bridge in the form of a balanced Wheatse bridge containing a temperature sensor R(.theta.) which, depending upon the measured temperature .theta., generates an output voltage which is balanced by a variable voltage y provided by ohmic ratio arms in such a way that if the sensor R(.theta.) has a non-linear characteristic, there will still be a linear relationship such that .theta. = const..sup.. y, the inventive feature being that the fixed ratio arms of the balanced Wheatstone bridge are formed by an inductive potential divider and that for correcting the non-linearity of the sensor the voltage across the variable ohmic ratio arms is a predetermined ratio (O.sub.3) of the voltage feeding the bridge.

Abstract: A seal for a rotating shaft, especially for the stern tube seal of a ship, ith at least one radial sealing ring bearing in sealing manner against the shaft or a shaft bush, or at least one reserve sealing ring mounted on a support, which can be moved by axial displacement of the support into a working position on the shaft, wherein the support is arranged so as to be axially movable in guides on parts of the housing of the seal and is provided with a chamber for receiving a pressure medium, especially a hydraulic medium, for moving the support to bring the sealing ring (reserve sealing ring) into a working position on the shaft.

Abstract: A compensating bridge circuit is used for measuring physical quantities dctly. The circuit comprises an unbalanced Wheatstone bridge having a quantity-dependent voltage at an output thereof. An ohmic potential divider circuit produces a divisional voltage for compensating the quantity-dependent voltage. The divider circuit includes two resistances one of which is variable. An input voltage is fed to the Wheatstone bridge and a supply voltage is provided to the potential divider circuit. The supply voltage is composed of the bridge input voltage and the divisional voltage whereby, when the circuit system is balanced, the relationship between an input quantity x and a balancing quantity y is linear.

Abstract: An apparatus for homogeneously joining together the cut surfaces of a seag ring of elastic material, which has been cut open radially on one side, particularly for stern tube seals in ships, utilizing a body member and segment provided with apertures corresponding to the contours of the sealing ring and utilizing clamping means for fastening the ends of the sealing ring, the cut surfaces of which have been provided with an adhesive, the body member receiving the ends of the divided sealing ring being made in the form of a shaped body divided in the radial direction of the sealing ring, with its parts being relatively movable towards and away from one another in a substantially tangential direction.

Abstract: Valuable materials, such as manganese, are extracted from the sea bed by pelling through the sea a buoyant body which floats on the sea and carries equipment for extracting the material from the sea bed. A pier connected to the body affords moorings for transport ships which receive the extracted material and conveyor devices associated with the pier deliver the material directly into the ships. The transport ship or ships provide part of the propulsion force for the buoyant body.

Abstract: A shaft seal of the kind in which at least two sealing rings are spaced at axially from one another on a rotatable shaft or on a bush fastened to the shaft is provided between the sealing rings with one or more deflectors which are spaced from the sealing rings and are engageable with the shaft or bush and act to deflect and whirl liquid lubricant circulating between the sealing rings so as to improve circulation of the lubricant and lengthen the life of the seals.