Abstract: A wire printer including a group of substantially straight and parallel printing wires or needles guided at their front ends for longitudinal movement towards and away from a printing station. Each of the printing wires is at its rear end connected to one end of an electromagnet armature the other end of which is supported by a flat spring. The armature cooperates with an electromagnet core provided with a winding. The core as well as the armature consist of strips of magnetic material. The core strips as well as the flat springs are mounted on at least one common rod engaging holes in the rear ends of said core strips and flat springs. The front end of each of the flat springs lies clear of the armature strip and serves, in combination with a stationary rest, to provide a force tending to move the front end of the armature strip away from the core strip.

Abstract: A wire printer including a group of substantially straight and parallel printing wires or needles guided at their front end for longitudinal movement towards and away from a printing station. Each of the printing wires is at its rear end connected to one end of an electromagnet armature the other end of which is supported by a flat spring. The armature cooperates with an electromagnet core provided with a winding. The core as well as the armature consist of strips of magnetic material. The core strips as well as the flat springs are mounted on at least one common rod engaging holes in the rear ends of said core strips and flat springs. The front end of each of the flat springs lies clear of the armature strip and serves, in combination with a stationary rest, to provide a force tending to move the front end of the armature strip away from the core strip.

Abstract: Apparatus for applying characters to packages or other objects advanced through a marking station. The characters, which each consist of a pattern of points or spots, are applied by the discharge of ink onto the object from a plurality of nozzles arranged in a row extending transversally of the direction of advancement of the object. Each of the nozzles is connected through a solenoid valve to a source of pressurized ink. The solenoid valves are controlled by a pattern generator which at predetermined intervals selects solenoid valves to be activated and causes a simultaneous opening pulse to be supplied to the solenoid valves selected. The height of the characters can be varied by means of switch means whereby one or the other of two groups of solenoid valves, corresponding to two groups of nozzles in said row, is rendered available for the selection.