Pivoting device for turbine housings of open-end spinning machines

Claim 1

An open-end spinning machine, which includes: a turbine housing open at its upper end, a spinning turbine journalled in said turbine housing, a housing means for an opening-up roller, said housing means being arranged above and closing up said turbine housing when said turbine housing is in its position of operation, a pivot shaft extending in the longitudinal direction of said machine at a level lower than said turbine housing, said turbine housing being movable relative to said pivot shaft from a first position in which said turbine housing is in engagement with said housing means successively along a straight first path in the axial direction of said turbine housing and along a curved second path around said shaft and vice versa, guiding means projecting from said housing means and extending in axial direction of said turbine housing while slidingly engaging a portion of said turbine housing for guiding the same along said straight first path, crank drive means connected to said turbine housing, control lever means connected to said crank drive means and operable to cause said crank drive means to move said turbine housing away from said housing means along said first path and to disengage said turbine housing from said guiding means, and means responsive to said turbine housing having disengaged said guiding means at the end of said first path to lock said crank drive means and to establish a rigid connection between said turbine housing and said control lever to thereby permit movement of said turbine housing along said second path about said pivot shaft.