Abstract: The capped electric lamp has a metal clamping member which surrounds a longitudinal part of the lamp vessel with a clamping fit and is secured to a metal bushing. The lamp cap has a metal sleeve secured therein which receives the metal bushing with telescoping fit to allow alignment of the lamp vessel with the lamp cap. After alignment, the metal bushing is fixed to the sleeve, for example, by welding. A dimming hood is secured in the aligned state to the bushing. A current-supply conductor extends through a tubular part inside of the lamp cap to a contact member of the lamp cap.

Abstract: The capped vehicle headlight lamp has a solid lamp cap with integral current supply conductors. The first ends of the current-supply conductors form lamp contacts. The current-supply conductors extend parallel to the lamp cap center line and have portions at right angles to the center line and at right angles to each other. The lamp vessel has current lead-through conductors, which are arranged diametrically opposite to each other and extend at least substantially along the center line of the lamp cap. The lamp may comprise a dipping cap, which is connected without a seam to the lamp cap and in whose wall a current supply conductor is included. The invention renders it possible to firmly secure the lamp vessel and the lamp cap to each other in an aligned position, while the construction of the lamp is nevertheless simple and reliable. Furthermore, a conductor not conveying current can be included in the dipping cap.

Abstract: In certain electric lamps, the lamp cap has a rectangular metal sleeve (10), which is fixed around the pinch (3) of the lamp vessel (1). The sleeve (10) also surrounds an insulator body (12), which immovably encloses a contact member (13). The contact member (13) is secured to a current supply conductor (4) of the lamp. In the lamp according to the invention, the insulator body (12) is immovably held in the sleeve (10) by depressions (16) in the corners (14) of said sleeve, which engage a respective recess in the insulator body (12).

Abstract: The capped electric lamp according to the invention has a lamp cap (9) of synthetic material comprising a dish-shaped part (10) having a circular-cylindrical wall portion (11) with an axis (12) and a bottom (13), and further comprising a panel (16) in which contact members (20) are anchored and a sleeve-shaped part (17) which surrounds these contact members. There is fixed in the dish-shaped part (10) a metal sleeve (7) which is telescopically joined at one end (8) with a flanged edge (6) of a metal clamping plate (5) and is connected thereto, while a seal (2) of a lamp vessel (1) is fixed in an opening of this clamping plate.

Abstract: An electrical lamp having a cap of synthetic material. A lamp vessel with a pinch seal is fixedly secured in a metal plate which is welded to a metal sleeve. The sleeve is rigidly secured in a two-part cup-shaped lamp cap which has a mounting flange and a groove for a sealing ring. The lamp cap is formed of first and second bodies of synthetic material which are rigidly connected to each other, the metal sleeve being locked to the first body, and the groove walls being formed by respective parts of each of the bodies.

Abstract: A lamp, such as a replaceable halogen unit for an automotive head lamp, has a transparent vessel pinch seal gripped in a clamping plate which has a circular cylindrical flange. The lamp cap is cup-shaped, and made of synthetic material having electrical contacts passing through the bottom of the cap. The lap vessel is connected to the cap by a metal cup-shaped sleeve, whose bottom is mechanically secured to the lamp cap, preferably by a rivet which also secures a contact in place.

Abstract: In a lamp according to the invention the use of cement for connecting the lamp cap (4) has been avoided by using a split metal ring (8). The neck-shaped lamp envelope portion (2) has recesses (13) in which projecting parts (12) of the ring (8) engage. The ring (8) has lugs (14) which at least initially press against the lower edge (3) of the neck-shaped lamp envelope portion (2). The ring (8) is secured to the lamp cap (4). During assembly of the lamp cap (4) the lugs (14) are deformed. A resilient force thereby induced in said lugs pulls the ring (8) in a direction opposite to the direction in which the lamp cap (4) was moved. As soon as the ring (9) is secured to the lamp cap (4), the resilience in the lugs (14) is of no further significance.

Abstract: Low-pressure mercury vapor discharge lamp having a discharge vessel (1, 2, 3) which contains with mercury and a rare gas and is of such a shape that the ends of the discharge vessel where the electrodes (4, 5) are arranged are in a side-by-side relationship, these ends being connected to a lamp base (8) which has an axially projecting sleeve-shaped wall portion (12) of a cross-section which deviates from the circular and in which at least a starter (13) is included, a respective connecting pin (10, 11) which is shorter than the length of the projecting wall portion being provided on either side of the said projecting wall portion.The projecting portion serves as a locating guide when inserting the lamp base in a holder (15), thereby inter alia preventing damage to the pins, and also serves as a housing for a starter switch (13) and a capacitor (14).

Abstract: A flashlamp unit comprising a supporting member on which at least one lamp is secured with a reflector disposed between the supporting member and the lamp. The part of the reflector nearest the lamp comprises at least one lug which upon elastic bending out of the reflector surface constitutes a passage for the lamp. During assembly of the unit the reflector may be snapped over the lamp.