Device for suspension of air filter bags

A device for suspending a filter bag in an air filtration plant, comprising:

• an elongated screw for attachment to the bag end,
• a socket receiving said screw and having means adapted to be attached to and dependent from a supporting member,
• a segment pivotally carried by said socket and having a plurality of teeth engageable with the threads of said screw, said segment being received through an opening in said socket, and
• means carried by said socket for yieldingly biasing said segment for movement of its teeth through the opening into engagement with said screw thread enabling axial movement of said screw in one direction with said segment yielding against the bias of said biasing means to the passage of said screw in said one direction and preventing movement of said screw relative to said socket in the opposite axial direction, said engagement between said screw and said teeth lying on one side of a line normal to the axis of said screw and passing through both said pivot and the axis of said screw when said segment both enables and prevents movement of said screw relative to said socket in the opposite axial directions respectively.