A wiper bar assembly consisting of a number of wiper arms (6, 7) radiating from a hub (1, 2) sweeps over the screen beds (36).

A multiple hearth furnace comprises a gas cooling system for its central shaft (20) and its rabble arms (26).

A multiple hearth furnace comprises a rabble arm (26) with a tubular structure (120, 124, 186) and a solid plug body (110).

A wiper bar assembly consisting of a number of wiper arms (6, 7) radiating from a hub (1, 2) sweeps over the screen beds (36).

The moveable portion may for example comprise a moveable drive 10 portion, a scraping blade or an arm.

A scraping device, comprising such a scraping tool is also provided.

Said stripping element is provided with a stripping lamella that is mounted on a lamella support and leans in a stripping manner against the belt band in the stripping position.

The first scraper removes the oil and it falls back towards the second scraper.

The cutting edge includes at least one wiper edge (77”) and the side surface includes at least one wiper surface (75”) provided behind the wiper edge.

The scraper lip rests with a scraper edge (26) on the other of the two machine parts (12, 14).

A multiple hearth furnace comprises a gas cooling system for its central shaft (20) and its rabble arms (26).

Each scraping surface (20) has a scraping edge at an angle of about 70° to the axis.

The invention refers to a scraping device (1) for an agricultural implement comprising a carrying arm (9) with a fastening part and a tool-carrying part.

Each of the scraping vanes has a scraping edge (54) directed radially away from the elastic core.

The invention relates to a stripper unit (44) and to a hydraulic working apparatus (40) having a stripper unit (44).