Chamber for abrasive powder descaling the surface of a strip

Claim 1

A chamber for abrasive powder descaling of the surface of a strip comprising two halves of said chamber with means for closing said halves, sealing, drawing the halves apart along a plane of abutment along which the two halves mate, and departing of at least one half from the abutment plane, the chamber including at least two mechanisms for compacting the abrasive powder, each having two shafts secured in supports in different halves of the chamber with levers connected to hydraulic power cylinders for turning the shafts, CHARACTERIZED in that each means for closing, sealing and drawing the two halves of the chamber apart along the abutment plane comprises a ring secured on the support of one of the shafts of the mechanism for compacting the abrasive powder capable of turning by said hydraulic power cylinder relative to the support and having two cams separated by a slot and arranged at a side of the support of the other shaft of the same mechanism for compacting the abrasive powder, said support provided with two annular recesses divided by a slot to receive the cams, the lever of the shaft whose support is used for accomodating the ring having a pusher capable of movement by a drive to the slot between the cams.