Abstract: In some embodiments, a roll for use in a rotary manufacturing system includes a cylindrical contact section that extends along a roll axis and may include a contact surface, an end face, a channel section, and a core section may have a core wall and a core shaft. The channel section may include a first wall and a channel shaft, and the channel section may define a channel between the first wall and the channel shaft that encircles the channel shaft and the roll axis. The channel may have an inner face, an outer face, and a channel end. The channel section and the core section may be attached to each other.

Abstract: A snib mechanism for a door latch assembly includes a body, and a rotary member disposed in or on the body and adapted to be engaged and rotated with a door knob spindle. A snib member is mounted on the body for movement between a snibbing position in which the first rotary member is snibbed against rotation and a freeing position in which the first rotary member is free to rotate with the door knob spindle. The body includes a cover plate and the mechanism further includes press-button means associated with the snib member. The press-button means is exposed through an opening in the cover plate and is manually operable by pressing inwardly of the cover plate to set the snib member at the snibbing position.