Abstract:
A method of manufacturing an electric discharge tube or an electric lamp starting from a vessel wherein a closed holder is placed which is provided with a quantity of one or more substances to be introduced into the vessel. Subsequently, a desired gas atmosphere is brought about in the vessel and the vessel is closed. Finally the holder is opened by means of current passage through a heating element present in the vessel. The heating element is connected to the ends of an electric conductor placed in the vessel, for example, a coil, between which ends an electric voltage difference is profuced by means of induction with the aid of a current-conveying primary coil placed outside the vessel.
Abstract:
An improvement in an arrangement for the introduction of materials into a closed electric discharge vessel. The arrangement includes a closed holder containing preselected material to be introduced into the vessel and a secondary coil element placed in contact with the holder which element includes a heating wire for decomposing the wall portions of the holder. The heating wire is activated by the induction of current in the secondary coil by a primary coil which is external to the electric discharge vessel. The invention encompasses improvement in the shape of the holder and the positioning of the holder. A particular embodiment of the invention involves constricted portions of the holder which cooperate with lugs extending from a strip-shaped secondary coil section. This arrangement effects substantially improved positioning of the holder after the materials within the holder are released into the vessel.