Abstract: A striker assembly for operating the printing hammer in a high speed impact-type line printer. The assembly is a simple, low cost unit having a minimum of components. The striker body is of one-piece molded construction having a head and neck portion. An armature backstop is carried in the head portion which may be externally adjusted for printer character alignment during operation of the line printer by exerting pressure on the head portion with resulting flexure of the neck. The backstop is self-aligning during such adjustment. The striker assembly is mounted to permit adjustment of printed character density during operation of the line printer.

Abstract: A letter feeder including a pair of belts mounted perpendicular to each other for transporting letters positioned thereon, a rotating brush roller and a control assembly both selectively movable to a position to stop a letter being transported by the belts and to separate double letters a selectively operated stop member for controlling the movement of letters from the feeder and a plurality of sensing members for selectively operating the brush roller, the control assembly and the stop member.