U.S. Philips Corporation

Johannes Feenstra

Hermanus N Tuin

Jan G Peelen

Wilhelmus C Meerman

Antonie Schrederhof

Marius A Klop

Paulus Jozef Verhappen

Antonius Johannes Van Tienen

Petrus Theodorus Bastings

A bundle of parallel glass tubes (27) is passed through openings (29) in parallel alignment plates (5) which divide the bundle into a central portion (31) in a zone between the two alignment plates and two end portions (33) beyond this zone. Subsequently, the tubes are softened by heating and the central portion of the bundle is constricted. Subsequently, the central portion is embedded in a moulding compound which, when set, forms two coupling pieces (1) for printing heads, which coupling pieces can be separated from one another along a separating plane (37) which extends parallel to the alignment plates. Thus, important parts of at least two printing heads are manufactured simultaneously.

Method of manufacturing printing heads for ink jet printers

Method of and apparatus for manufacturing optical fibers in which a preform is heated in a furnace which is provided with a graphite heating element and a fiber is drawn from the heated preform. The fiber is subsequently cooled, provided with a coating, and, after drying of the coating, the fiber is wound onto a reel. For applying a coating to the fiber, the fiber is passed through a nozzle which has a polygonal nozzle opening.

Coating apparatus for manufacturing optical fibers

A method of and a glass furnace for the melting of a raw batch of glass, in the form of pellets distributed in a thin, uniform layer over a glass melt by a rotor arranged in the roof of the glass furnace, with air being injected into the glass melt. The melting process is accelerated and the homogeneity of the glass melt is improved.

Method of melting a raw bath and a glass furnace for performing the

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Eindhoven, Netherlands

Johannes Feenstra