U.S. Philips Corporation

Peter Engler

Wendelin Weber

Heinrich Durr

Hermann Richter

Burkhard Goerke

Dieter Nerbas

A stylus printing head comprising a number of electromagnets which operate the printing styli and which are clamped on a conical carrier by means of a clamping device. The carrier comprises cradle-shaped, resilient supports for each of the electromagnets. The resilient supports compensate for differences in expansion of the electromagnets, the carrier and the clamping device in reaction to temperature variations occurring. The resilience of the supports is obtained by means of slots in the carrier which enable the use of a plurality of carriers in the same printing head.

Stylus printing head comprising electromagnets on resilient supports

A matrix printer comprising a fanned arrangement of printing wires. Near their bearing points the printing wires are guided through openings in tag portions bent out of the plane of a strip-shaped porous member containing a lubricant. Lubricant is thus applied to the printing wires by contact between the printing wires and the edges of the openings adjacent their bearing points. The described method of lubrication results in a substantial prolongation of the service life of the printing wires as well as of the bearings.

Matrix printer comprising lubricated printing wires

A tape driving device in which the tape is helically wound around an axially displaceable cylinder. On rotation of the cylinder one end of the tape is taken up and the other is unwound at the same angle with respect to the cylinder. A remote guide roller is adapted to be locked in at least two positions to produce slack in the tape, which permits controlling a functional structure mounted on the carriage without affecting the movement of the carriage.

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Siegen, Germany

Peter Engler