The invention relates to a method of producing scaffolds, especially ladders. In order to provide a construction solely made of an insulant material, the rails (5) and the rungs (1) of a ladder according to the invention are wholly made of reinforced plastic and are joined to each other by means of a polymeric cold junction method. Thereby a hole (18) is provided on the side of the rail (5) and a suitable amount of a mineral or fiber reinforced monomer mixture (2) is added therein, whereafter the rung (1) is positioned thereto and the resultant whole Is turned upside down, the monomer mixture being polymerized by means of heat, a catalyst and/or an accelerator. So the monomer mixture flows around the junction of the rung (1) and the rail (5), polymerizing therein and forming a tight joint between the rung and the rail.

The invention concerns a vibration damper (1) for rails (3) of a railway, resting on sleepers (4) which are situated at a certain distance (10) from one another, which damper (1) is designed to be fixed to said rails between two successive sleepers (4), whereby said damper (1) comprises at least one damping element (7) which must be placed against the rail flange (3a) and/or the top side of the rail foot (3b) of the rail (3), so that the far end (6) of the damping element (7) which is turned away from the rail (3) can freely vibrate.

The device (1) comprises a base (2), carrying a servo motor (3) and attached to the frame of a machine center. A carriage (6) with a vertical shaft (8) on top can be moved on two telescopically arranged rails (4,5) joined horizontally to the base (2). The tool holding elements (16,17) are positioned at the upper end of the shaft (8) and can be fixed with a locking unit (18). A control plate (12) is located at the second rail (5) acting in combination with a guiding roll (10) in order to facilitate a swivel motion of the tool carrier (15).

A frame structure consisting of two compound units provided with mutually facing grooves undercut on either side, in which the first compound unit can be attached in a desired position to the second compound unit via a detachable coupling which comprises a turning part which can be turned from the outside manually via a handle about its longitudinal axis by about 90 DEG into its coupling or decoupling position, and which in its coupling position positively engages by means of a T-head at its one end in one of the two grooves and by means of anchoring means at its other end in the other of the two grooves and can be locked in this coupling position by means of an anti-rotation device. To connect the two compound units to each other without special tools, but above all to be able also to detach them from each other again, it is proposed according to the invention that the anchoring means comprise a punched part which is arranged longitudinally displaceably in the one groove and bears the turning part which is freely rotatable relative to it and that the handle comprise a resilient element connected securely against rotation to the turning part, which element in decoupling position extends in relieved state or under only slight stress between the two compound units and in coupling position engages under bending stress behind a holder.

It is structured in the form of a bearing sheet made up of a series of profiled plates (1), which run from the ground to the roof, grooved, to form trays with a U-shaped section, which are attached by their central branch to the front edge of the floor slabs and whose side branches (2) serve as supports and spacers for an exterior sheet (7), which forms the exposed face of the front wall, using modular pieces (9) that are mounted on strips (10) suitably attached to the front edge (3) of the trays (1), or panels that are directly secured to those edges if there are no strips. The respective layers (6) of insulation and soundproofing material lie at the bottom of the trays (1), which are still at a considerable distance from the exterior sheet (7), forming a ventilated chamber that also runs from the floor to the roof, while the internal face of the bearing sheet (5) adapts to the insertion of another insulating and soundproofing layer (13), an inner sheet (12), which takes the form of a self-supporting back made up of panels composed of plaster sheets on a galvanised steel structure.

The floor part has intermediate parts (3) that connect a bottom plate and a top plate (2a). The intermediate parts are continuous in two directions that are transverse to each other, for defining girders with the plates for bearing span in both directions. The intermediate parts define passages for connecting the cavities defined by girders, with each other in one direction. Independent claims are also included for the following: (a) a building having a floor built up from concrete floor parts (b) a method for manufacturing a concrete floor part.

A coating apparatus (100) and coating method include a device for conveying an object (W) to be coated; a coating device (4) which is disposed in a vicinity of a conveyed surface of the object (W), and which discharges a coating liquid, and which forms a bridge of the liquid between the device (4) and the object (W) which is conveyed by the device for conveying an object to be coated, and which coats the liquid on at least one surface of the object (W); and a gas stream blowing device which, immediately after starting of coating, blows out a gas from a direction substantially opposite to a object conveying direction, toward a portion of the object where coating starts.

A machine for machining panels comprises: a worktable (1) consisting of a fixed supporting portion (1a) and a portion (1b) which is mobile, in both directions, along a direction of feed (A) and designed to allow the panel (2) to be cut to slide; a machining tool (3) positioned on the fixed portion (1a) and partially projecting from the table (1); a supporting frame (4) for the panel (2) to be machined, attached to the mobile portion (1b) and projecting from the table (1); the frame (4) also comprises a lower portion (5), at a fixed angle to the direction of feed (A) and supporting an upper portion (6) for supporting the panel (2), which can be positioned at an angle, in both directions, to the direction of feed (A) and means (7) connecting the upper portion (6) to the lower portion (5), inserted between the upper portion (6) and the lower portion (5) of the frame (4) in such a way as to allow rotation with stable angular positioning ( alpha ) in the position defined by the upper portion (6).

1. A vibrating grinding machine with a container (1) for receiving the mass to be vibrated and a generator of vibrations (2), characterized in that the container (1) comprises at the bottom (3, 3') a discharge device (14) for the mass to be vibrated, on which is disposed a free internal jacket (10), the bottom being concave, convex or flat-shaped in the region of the discharge device.

A device for preparing and ejecting polymeric cement made from at least two pre-packaged components comprises a tubular vessel including a first axial end wall having a closed outlet, and a second axial end wall having an aperture. A first starting component of the polymeric cement is present inside said tubular vessel near the first axial end wall. A hollow shaft extends through said aperture of the second axial end wall. A piston element comprises a closed container filled with a second starting component of the polymeric cement. The piston element is selectively lockable to the shaft. The container has a bore and is slidingly engaged upon said shaft. An agitator element is secured to one end of the shaft. Furthermore opening means for providing an opening in the closed container are provided. The hollow shaft is provided with a gas permeable filter means.