Abstract: A split nut with an outer body and an inner body formed of two jaws for gripping a threaded rod. The outer body has an inner surface defining tapered axial channel and includes a separator between the jaws to guide the jaws against an inner surface of the tapered axial channel. The inner surface can be circular in cross section and the outer body can also have an outer surface be circular in cross section. A lock is arranged to lock the jaws in an axial position at which the jaws are sufficiently close to force the jaws into threaded engagement with the threaded rod. The lock can also lock the jaws in an additional axial position at which the threaded rod can be moved freely axially between the jaws. The lock can comprise a locking pin movable within the outer body into respective slots corresponding to each locking position.

Abstract: A split nut with an outer body and an inner body formed of two jaws for gripping a threaded rod. The outer body has an inner surface defining tapered axial channel and includes a separator between the jaws to guide the jaws against an inner surface of the tapered axial channel. The inner surface can be circular in cross section and the outer body can also have an outer surface be circular in cross section. A lock is arranged to lock the jaws in an axial position at which the jaws are sufficiently close to force the jaws into threaded engagement with the threaded rod. The lock can also lock the jaws in an additional axial position at which the threaded rod can be moved freely axially between the jaws. The lock can comprise a locking pin movable within the outer body into respective slots corresponding to each locking position.

Abstract: A releasable self-locking device which may be installed upon a central shaft (such as a hexagonal shaft), such that it can freely slide along the shaft in a first direction, but provides releasable locking engagement along the shaft in a second direction. The use of such a releasable self-locking device in combination with a hexagonal shaft as a bushing removal and bushing installation tool.

Abstract: A brake assembly machine for forming a hem in sheet metal has a top bar and a bottom bar opposite the top bar. The top bar and the bottom bar can move towards one another to hold sheet metal therebetween. The brake assembly machine also has an angle foot movable to a proximity of a bending bar that moves about a bending bar axis and includes a bending face. As the bending bar moves about the bending bar axis, the bending face of the bending bar can move closer to the angle foot and before the bending bar bending face contacts the angle foot, the angle foot moves to avoid contact with the bending bar.

Abstract: A brake assembly machine for forming a hem in sheet metal has a top bar and a bottom bar opposite the top bar. The top bar and the bottom bar can move towards one another to hold sheet metal therebetween. The brake assembly machine also has an angle foot movable to a proximity of a bending bar that moves about a bending bar axis and includes a bending face. As the bending bar moves about the bending bar axis, the bending face of the bending bar can move closer to the angle foot and before the bending bar bending face contacts the angle foot, the angle foot moves to avoid contact with the bending bar.