Abstract: A subminiature incandescent lamp having a tubular bulb with a flattened ps portion effecting closure of the bulb having a pair of lead-in wires sealed therethrough. The lead-in wires extend exteriorly of the bulb and are re-entrant into the press portion of the bulb to form two U-shaped loops, the sides of each of which touch throughout their length, and with the loops bent back about opposite sides of the flattened press portion.

Abstract: An incandescent lamp is disclosed in which the lamp mount is replaced with a mount which is attached to a molded glass disc having pins extending therethrough. The disc is attached to the bulb by way of a solder glass seal and the base is welded to the pins.

Abstract: External cylindrical current conductors of an electric lamp are torpedo-shaped at the end which is welded to a metal foil in a pinch seal of the lamp vessel.The torpedo-shaped part has a length which is at least equal to the diameter of the cylindrical part, while the diameter of the torpedo-shaped part at a distance from the cylindrical part of 0.9 times the cylinder diameter is at most equal to half the cylinder diameter.Also when comparatively thick external current conductors, approximately 1.5mm diameter, are used and at a high temperature of the pinch seal, the lamps will withstand cracking. The welded joint of the conductors to the metal foil is stronger than in known lamps.

Abstract: The support means for a press-sealed single-ended tubular incandescent lamp comprises support wires which are embedded in the press seal and protrude from the edge thereof, substantially orthogonal to the axis of the lamp.

Abstract: An incandescent lamp-reflector unit having a metal reflector in which, for increasing the reflecting surface, the neck aperture of the reflector is maintained as small as possible, is not flash-over-safe due to the small distance between bare parts of the neck of the reflector and the contact pins of the lamp. The unsafety is removed by causing the said distance to be larger than the smallest distance of the pins and the neck of the reflector by means of an insulating envelope of the pins and/or an insulating coating on and near the end face of the neck of the reflector.

Abstract: A multihundred watt incandescent projection lamp has a continuous coiled filament in a rectangular area in front of a reflector, the filament comprising folded segments two of which extend substantially parallel from two lead wires into the envelope of the lamp. The coil end turns of the filament telescope over the lead wire ends which comprise the sole electrical supply, the sole support for the filament and also for the reflector.

Abstract: An infrared tubular incandescent lamp provided with a cap assembly and current supply lead at each pinched end of the lamp vessel. The caps are not electrically conductive and are heat sinks. Each cap assembly includes a formed ceramic member enclosed by a cap with a good heat conductive mass embedded between each pinched lamp seal and its surrounding metal cap. A luminaire for this lamp is provided which contains means resiliently engaging the lamp cap so as to form a heat sink.

Abstract: A dual filament lamp is installed in its cooperating socket without the use of intermediate base, cement or bulb stem. The elimination of the intermediate elements improves the ability to manufacture lamps having precise filament alignment with respect to their sockets.

Abstract: An improved wedge-based lamp and method of manufacture are disclosed in which conductive leads and an exhaust tube are positioned and held in the pinch end of a flared section of glass tubing. After one or more filaments are attached to the leads and accurately positioned relative to the pinch end, an envelope is fastened to the flare to enclose the filaments and the lamp is exhausted or filled with inert gas(es) via the exhaust tube.

Abstract: A mechanically assembled base is disclosed in which the insulator portion comprises an undercut for supporting the portion of the base shell holding the insulator in place.

Abstract: Coiled incandescible filament which principally comprises tantalum carbide has coiled end portions thereof overfitting relatively thick tantalum carbide members, with the inner surfaces of the overfitting coils welded to the relatively thick members. Electrical connection and support for the filament is made to the relatively thick, overfitted members, rather than the fine, brittle filament. In order to effect the weld between the overfitting coils and the relatively thick members, the coils and relatively thick members are first overfitted as metals and then carbided, with diffusion welds therebetween formed during the carbiding process.

Abstract: An electric lamp having a light-transmitting envelope, such as a glass bulb, secured to a plastic base having a symmetrical wedge-lock portion. Lead-in wires from the glass bulb are threaded through channels in the plastic base and extend alongside the wedge-lock portion to form contacts without soldering.

Abstract: A glass screw base of a bulb is provided with a first channel for accomodating solder filling used for mechanical locking of the glass base to a metal screw shell. A second, narrow channel is made in the base to receive a lead wire and direct it to the rim of the shell whereupon an electrical contact is established by a minimal amount of solder and solder flux.

Abstract: An electric lamp assembly for use in sealed beam lighting units comprises a sealed envelope containing a light source mounted in an integnally flanged cap. Electrical supply leads pass through hermetic seals in the cap, and means are provided which support the light source in a predetermined position relative to the cap flange.

Abstract: A miniature wire lamp is cemented into a ceramic holder such that the filament is precisely located with respect to the holder.

Abstract: A lamp includes a sealed envelope with an integrally formed base so as to form a single unit. An illuminating filament is enclosed within the sealed envelope and leads connected to the filament pass through a stem contained within the envelope. An electrical cord is passed through the base and attached to the leads. An embodiment of the lamp further includes a loop filament, and a magnet positioned in proximity to the envelope.

Abstract: A miniature indicating lamp with a base made of synthetic material for insertion into a socket. The lamp is provided with an upper hollow-cylindrical glass portion, and a base which has a bottom portion in the form of a flat plug. A separating wall extends parallel to the axis of the lamp and has bores on both sides of the wall. Connecting wires are inserted in the bores and extend into the upper hollow-cylindrical glass portions. The bores and connecting wires are substantially at the center of the bottom portion of the base, and grooves communicating with the bores, provides access to them.

Abstract: An electric incandescent lamp and method of manufacturing same in which two filaments stretched in frames are arranged. The frames are coupled together by a brace having a central portion which is incorporated in the exhaust tube seal in the upper wall of the lamp envelope.

Abstract: An electric lamp having a light-transmitting envelope, such as a glass bulb, secured to a plastic base having a symmetrical wedge-lock portion. Lead-in wires from the glass bulb are threaded through channels in the plastic base and are bent around the wedge-lock portion to form contacts without soldering.

Abstract: The invention relates to a headlight as well as an incandescent lamp which is suitable for being arranged in a reflector by means of which an anti-dazzle beam is produced. For that purpose the headlight and the incandescent lamp comprise a filament and a cap of which two edges extend along the filament. The distance from at least one of the edges to the longitudinal axis of the filament at the area of the end of the filament which is remote from the rear end of the reflector is larger than in any other place along the axis of the filament.

Abstract: An improved miniature size electric lamp is disclosed wherein an outer wire lead of the lamp is flattened and adhesively bonded to the inside rim of the base shell with an electrically-conducting basing cement. A method of manufacture for said lamp construction is also disclosed wherein the flattened section of the wire lead is aligned to lie in a plane approximately tangent to the envelope wall of the lamp prior to positioning the lamp envelope for assembly to the base shell. A layer of electrically-conducting basing cement is located around the periphery of the base shell to provide improved electrical contact between the side wire lead and the base shell. An insulating cement is applied to the remaining eyelet contacting wire lead at the glass to metal junction and extends a sufficient distance along the lead to electrically insulate this wire lead from the electrically conducting cement.

Abstract: A halogen incandescent lamp comprises a lamp envelope which is sealed by one or two pinch seals in which one or more foils and conductors welded thereto are sealed and in which pinch seals means are present which form a cavity adjoining the points of the weld of the foil to a conductor.

Abstract: The Solder Sealed Light Bulb utilizes a solder exhaust port seal and lead seal combination. Solder glass, or metal solder may be used for the seal material. Evacuation is accomplished in a vacuum furnace. The bulb assembly is evacuated thru the openings at the solder plug, the application of heat liquefies the solder, and surface tension causes the openings to close. Upon cooling, a high vacuum seal is obtained.

Abstract: In a tubular, double ended electric incandescent lamp in which the filament comprises coiled segments spaced from each other, the filament coiled segments are electrically connected by means of skip space wire sections coiled at each end thereof, which are threaded onto the filament segments.

Abstract: The invention relates to a normal incandescent lamp having a coiled filament throughout its length, whose secondary winding in a turn near the ends of the filament secured to the current supply wires exhibits a larger pitch than the winding of the central part of the filament.