Abstract:
A plastic base assembly for a ''''circline'''' fluorescent lamp is molded in two segments that are secured in enclosing relationship with the sealed ends of the envelope solely by means of a snapinterlock effected between a pair of depending lugs on one of the segments and a pair of mating recesses in the other segment. The base segment having the locking lugs is molded in such a way that the side walls of the lugs define a locking angle that is smaller than the mold release angle and thus permits the base segment to be readily stripped from the molding die without damaging or otherwise impairing the ability of the lugs to effect a strong mechanical interlock with the other base segment. Rotation of the base relative to the lamp envelope is prevented by a nodal projection on the enclosed end of the envelope that is located between stop means molded into the inner surface of one of the base segments. Alternatively, the ends of the lamp envelope can be provided with metal end caps one of which has a tang that is disposed between the stop means defined by the base structure.
Abstract:
An electroluminescent display device is provided, in which a substrate of the display is comprised of character electrodes, external connecting means for facilitating connections to external apparatus and a plurality of interconnecting means between the character electrodes and external connecting means. The character electrodes, interconnecting means and external connecting means form one integral unit, with the display device itself being a monolithic structure.
Abstract:
An arc lamp construction in which the lamp envelope portion surrounding the main body portions of the arc electrodes is spaced therefrom to define a cylindrical gap and in which a packing member is disposed in the cylindrical gap to support the electrodes. The packing member is elastic, or radially deformable, to prevent cracking of the envelope as the gap width changes with temperature, and is thermally conductive to allow the transfer of electrode heat across the gap to the envelope.
Abstract:
A GAUZE ELECTRODE FOR VIDICON ("PLUMBICON") HAVING A DIAMETER OF 15 MM. OR SMALLER. A MAXIMUM LIGHT TRANSMISSION OF THE GAUZE ELECTRODE IS OBTAINED BY FIRST ETCHING COPPER GAUZE WHICH IS MANUFACTURED BY ELECTRODEPOSITION TO A LIGHT TRANSMISSION OF 70% AND THEN SECURING IS BY DIFFUSION AT APPROXIMATELY 2/3 OF THE MELTING TEMPERATURE OF THE MATERIAL OF THE GAUZE BETWEEN TWO COPPER-NICKEL RINGS. THE WIDTH OF THE RINGS IS SMALLER THAN 15% OF THEIR ORIGINAL OUTSIDE DIMENSION.
Abstract:
A method of making an electric lamp comprises the steps of forming a metal foil lead-in conductor blank of U-shaped configuration having the free ends only of its two leg portions etched to feather the edges thereof completely therearound, connecting a filament to the tip ends of the etched leg end portions of the blank, sealing the neck end of a vitreous envelope around the etched leg end portions of the foil blank while leaving the other or bight end thereof projecting outwardly of the envelope from the pinch seal, and then severing the foil blank at its bight end into two separate foil lead-in conductors spaced apart from one another. An electric lamp made by this method may have the projecting outer end portions of the two foil lead-in conductors folded back around the same one or around opposite ones of the flat sides of the pinch seal.
Abstract:
A PLURALITY OF ELONGATED TUBULAR ELECTRON TUBE ELECTRODES ARE DISPOSED INTO NESTED RELATIONSHIP ON A JIG WITH BOTH THEIR LEADING AND TRAILING ENDS BEING DISPOSED RELATIVELY RAMDOMLY WITH RESPECT TO ONE ANOTHER. THE TRAILING ENDS ARE GATHERED INTO A PREDETERMINED ARRAY AND A FIRST SPACER PLATE IS MOUNTED THEREON TO FIX THE ORIENTATION OF THESE ENDS. THE ELECTRODES ARE THEN REMOVED FROM THE JIG, INVERTED, AND
MOUNTED ON A JIG WITH THE FIXED ENDS CLOSEST TO THE JIG AND THE OTHER ENDS PROJECTING THEREFROM. THE PROJECTING ENDS ARE THEN GATHERED AND A SECOND SPACER PLATE IS MOUNTED THEREON TO FIX THEIR ORIENTATION.
Abstract:
A NOVEL METHOD FOR MAKING A DISCHARGE DEVICE, PARTICULARLY A HIGH VOLTAGE RECTIFIER, WHICH COMPRISES AN ANODE AND A CATHODE ENCLOSED IN A GLASS ENVELOPE WITH CONDUCTIVE LEADS SEALED THROUGH THE ENVELOPE FOR MAKING ELECTRICAL CONNECTION TO THE ANODE AND CATHODE. AT LEAST ONE OF THE LEADS COMPRISES A HOLLOW TUBULAR MEMBER HAVING A CLOSED END CONTAINED IN THE ENVELOPE AND AN OPEN END SEALED TO THE ENVELOPE AND FORMING A FEMALE SOCKET FOR ELECTRICAL CONNECTION THERETO.
Abstract:
AN ALIGNING JIG AND METHOD OF OPERATION TO PRECISELY ALIGN THE G1 AND G2 ELECTRODE APERTURES OF AN ELECTRON GUN IS DISCLOSED. A ALIGNING MANDREL IS POSITIONED IN ONE APERTURE AND ADJACENT THE OTHER AND ROTATED TO VIEW MISALIGNMENT. THE SUPPORTING CYLINDER IS THEN MANUALLY DISTORTED TO PRODUCE APERTURE ALIGNMENT.
Abstract:
THE MOUNT STRUCTURE FOR AN ELECTRIC INCANDESCENT LAMP IS MADE BY FIRST BENDING A LENGTH OF ALEAD-IN WIRE INTO A HAIRPIN-SHAPED WIRE PREFORM WITH ITS BIGHT END PREFERABLY OF GREATER SPAN THAN THE ADJACENT LEG PORTIONS, FUSIONSEALING A GLASS BEAD AROUND THE ADJACENT LEG PORTIONS OF THE HAIRPIN-SHAPED WIRE PREFORM TO TIE THEM TOGETHER, AND THEN MOUNTING A FILAMENT ON THE BIGHT PORTION OF THE HAIRPIN-SHAPED WIRE PREFORM AND SEVERING THE BIGHT PORTION AT A REGION BETWEEN ITS CONNECTIONS TO THE FILAMENT TO DIVIDE THE HAIRPIN-SHAPED WIRE PREFORM INTO TWO SEPARATE LEAD-IN WIRES WITH THEIR SEVERED ENDS OUT OF CONTACT WITH ONE ANOTHER. THE BIGHT FORMING BENDS IN THE LEAD-IN WIRES OF THE MOUNT HAVING A CLOSE SLIDING FIT WITH THE INNER WALL OF THE TUBULAR LAMP ENVELOPE TO CENTER THE MOUNT THEREIN.
Abstract:
METHOD OF MOUNTING A HEATER IN A TUBULAR CATHODE HAVING A CLOSED END IN SUCH A WAY AS TO ASSURE A UNIFORMITY IN THE POSITIONS OF THE HEATERS IN SEVERAL CATHODES AND TO PREVENT CHIPPING AND LOSS OF THE INSULATING COATING ON THE HEATER DURING THE MOUNTING OPERATION. THE METHOD INVOLVES ATTACHING THE ARMS OF A U-SHAPED TAB MEMBER UNIFORMLY TO UNCOATED POTIONS OF THE HEATER LEGS TO PROVIDE A CONVENIENT MANUAL ENGAGEMENT MEANS AND TO RESTRAIN THE LEGS FROM FLARING OUTWARDLY INTO ENGAGEMENT WITH A SHARP EDGE OF THE OPEN END OF THE SLEEVE THROUGH WHICH THE LEGS ARE EXTENDED IN FORMING A HEATER-CATHODE ASSEMBLY. AFTER THE HEATER AND A PORTION OF THE LEGS THEREOF OF THE HEATER-TAB ASSEMBLY HAVE BEEN INSERTED IN THE CATHODE, THE ARMS OF THE U-SHAPED TAB MEMBER ARE WELDED TO HEATER SUPPORT STRUCTURES MOUNTED ON TWO GLASS RODS, AND THE TRANSVERSE PORTION OF THE TAB MEMBER IS REMOVED.