Abstract: A sight installation device, comprising a body having a notch which is capable of receiving a pistol slide with a sight receiving groove, the notch possessing a first and a second lateral sidewall, and an at least one horizontal brace abutment. The sight installation device's body also has at least one guide channel proximate the notch, in which a pusher bit is longitudinally slidable and configured so as to contact a sight element directly in line with the pistol slide's sight-receiving groove. The sight installation device also possesses a drive screw configured to engage an opening in the body proximate the guide channel, the drive screw engaging the opening and configured to engage the pusher bit.

Abstract: A support for a trapeze or other structure (such as a sling) that depends from a rail, said rail extending over a bed (usually a hospital bed) or other patient-support device. A carriage (which might be called a trolley) is provided for selective movement along a conventional rail, from one end to the other. Alternatively, the carriage is held static, where it provides a stable “anchor” for a trapeze and the person who is pulling downward on the trapeze. The static condition is initiated by the action of pulling downward on the trapeze, causing the carriage to bear against the rail with what may best be described as a “gripping” action. Switching between free movement along the rail and braked movement is automatic, and involves only a downwardly directed force on the carriage, which force may be supplied by an attending nurse or the patient.