Abstract: A high pressure metal halide discharge lamp of the sodium-scandium type which has the maintenance thereof improved by the addition of a small quantity of lead metal powder. The lead metal powder is added to the discharge sustaining fill in an amount of from between about 0.4 and 1.2 wt. % of the total amount of discharge sustaining fill.

Abstract: A high-pressure sodium vapor discharge lamp of improved color including in combination a specified arc length to power input, a predetermined sodium to mercury amalgam ratio, heat shields surrounding each end of the arc tube and an improved end cap to arc tube seal, which combine to increase the sodium vapor pressure and provide a lamp of greatly improved color.

Abstract: An improved composite emission material for use in the electrodes of high intensity (HID) lamps comprising a reacted mixture of barium zirconate and strontium zirconate wherein the ratio of barium to strontium is from between 9:1 to 1:1 and is preferably 4:1. The improved emission material has a lower vapor pressure, higher melting point and a reduced processing time as compared to prior art emission materials.

Abstract: A combination mounting bracket and support pipe for mounting a luminaire or the like to a vertical pole is disclosed. The combination mounting bracket and support pipe includes a curved tubular support pipe having an elongated slot in one end thereof which slips over the head of a thru-bolt extending through the vertical pole. A U-shaped clamp is welded to the support pipe above the elongated slot and secures the combination to the pole by a pair of lag screws which extend through the clamp and into the pole.

Abstract: A recessed interior fluorescent luminaire construction including a reversible interior ballast housing which adapts the luminaire for either four lamp or three lamp construction with the lamps lying in a horizontal plane above and parallel with the luminaire refractor. This construction further provides for minimal luminaire height and therefor requires minimal plenum space.

Abstract: An asymmetrically mounted recessed lighting fixture which includes an integral appearance frame about the bottom edge thereof which underlies and conceals the ceiling support framework from view. The lighting fixture includes an undercut or recessed portion in one sidewall which permits mounting of the luminaire on the ceiling support framework without removal of the appearance frame which underlies and conceals the ceiling support framework.

Abstract: An improved arc tube end seal and the method of forming that seal in a high pressure sodium discharge lamp is disclosed. The method includes precoating the refractory metal end cap with a slurry of metallic silicon and baking the end cap prior to accomplishing the bonding of the end cap to the arc tube with a conventional sealing frit.

Abstract: Sintering aids are disclosed which inprove the sintering of emission materials in high pressure discharge lamps. The sintering aid is a eutectic composition of at least one of barium oxide-tungsten oxide (BaO--WO.sub.3), calcium oxide-tungsten oxide (CaO--WO.sub.3), or strontium oxide-tungsten oxide (SrO--WO.sub.4)and is mixed with the emission material in quantities of about 2 to 50 wt.% sintering aid and 50 to 98% emission material. Preferably, the sintering aid is present at between about 5 and 10 wt.%.

Abstract: An improved method for sealing off the refractory metal exhaust tubulation of the ceramic arc tube employed in the high pressure sodium discharge lamp. The method involves a single four-directional crimp of the tubulation to form an X-shaped cross-section and the subsequent electrical resistance tip-off of the tubulation while it is disposed in an inert gas atmosphere at a pressure which is higher than the pressure of the rare gas atmosphere within the arc tube and tubulation and is also above atmospheric to insure all oxygen is flushed from the area of the melting.

Abstract: A method for securing an electrode to the electrode holder in a high pressure sodium discharge lamp and resulting article, which method, involves spot welding a thin niobium, tantalum or titanium wire across the flattened end of the electrode holder and thereafter spot welding the electrode rod to the electrode holder perpendicular to the axis of the thin wire to provide a strong bond between the electrode and the electrode holder.

Abstract: An improved arc tube end seal and the method of forming that seal in a high pressure sodium discharge lamp is disclosed. The method includes precoating the refractory metal end cap with a slurry of metallic silicon and baking the end cap prior to accomplishing the bonding of the end cap to the arc tube with a conventional sealing frit.

Abstract: A combination space dividing wall panel and fluorescent lighting fixture wherein the fluorescent lighting fixture is mounted a predetermined distance above the upper edge of the wall panel by a pair of lighting fixture support posts having inverted U-shaped saddle-like members overlying the upper horizontal edge of the wall panel. The support posts extend into threaded apertures in the underside of the lighting fixture and are variably rotatably positionable therein to provide for either linear alignment of the U-shaped saddle members or an angular relationship therebetween to accommodate interconnected angularly related wall panels as the lighting fixture base support.

Abstract: A combination support bracket and self-adjusting wedge for mounting and supporting objects on the upper edge of planar panels of varying thicknesses. The support bracket includes an inverted U-shaped saddle member which overlies and surrounds the upper edge of the panel and a self-adjusting wedge member is mounted within the saddle member adjacent one of the side walls thereof and is vertically slidable to vary the spacing between the wedge member and the opposite side wall of the saddle member to thereby accommodate panels of varying thicknesses.

Abstract: The invention relates to a starting and operating device, including an intance in the ignition circuit, for a high pressure discharge lamp, especially for a high pressure mercury vapor discharge lamp with metal halide additive, having at least one starting electrode positioned near one of the main electrodes within the discharge vessel. The starting electrode and the main electrode remote from the starting electrode are bridged by an electric circuit externally of the discharge vessel which comprises a current-interrupting and/or current-limiting electrical component. This arrangement of an auxiliary electrode within the discharge vessel of a high pressure discharge lamp brings about a reduction of the supply voltage required for initiation of the discharge which is particularly desirous in the case of high pressure mercury vapor discharge lamps containing metal halides.

Abstract: A support panel for an inner cabinet storage system adapted to support a plurality of shelves, trays or the like within a larger storage cavity. The planar support panel is provided with a plurality of spaced horizontal slots on each face thereof for slidably receiving the shelves, trays or the like and includes at its top edge outwardly directed hook-shaped members which hang the panel from complementary ledges on the top wall of the storage cavity. The panel further includes a pair of spaced cam members which are journaled within the panel and extend through slots in the bottom of the panel. The cam members are rotatable to change the effective height of the panel and thereby secure the panel within the larger storage cavity.

Abstract: An improved end-forming machine for fluorescent lamp tubes which employs a single main splined shaft to drive both indexing units in unison while having the facility to accommodate all standard commercial glass lamp tubes which may vary in length from 96 inches to 14 inches. Additionally, the tooling for each indexing turret is always maintained in the same relationship with its associated turret for all turret spacings.

Abstract: A non-exposed drawer lock for locking a drawer to its surrounding case. The drawer front is flush with the edge of the work surface with the lock completely hidden from view. A spring urged slidable locking bar is mounted to the drawer case which permits the drawer to be opened slightly while still in a locked configuration thus exposing the lock to thereby permit the drawer to be unlocked and opened completely.

Abstract: A locking mechanism for locking a backless wall mounted cabinet or the like to a wall panel or partition having a pair of spaced slotted standards thereon adapted to receive a plurality of equidistantly spaced linearly aligned hook-shaped tabs on the rearward edges of the cabinet side walls. The locking mechanism includes a locking tab having a pair of spaced detents thereon, which locking tab is slidable from a first position adapted to enter the slots in the slotted standard with the hook-shaped tabs to a second position which locks the hook-shaped tabs into the slotted standard. A spring-urged locking pin is constructed and arranged to retain the locking tab in its second position.

Abstract: An arc discharge lamp of the ceramic arc tube type wherein the mounting hardware for the arc tube at the end remote from the lamp base is significantly reduced in mass to eliminate an excessive heat sink characteristic and an expansion accommodating mounting is provided for the arc tube adjacent the base end of the lamp at the juncture of the base lead-in conductor and the arc tube lead.

Abstract: A high pressure, mercury-vapor (HPMV) discharge lamp of the additive type having a discharge sustaining filling which includes between 0.5 and 2.5 mg. of bismuth iodide (BiI.sub.3) per cubic centimeter of arc tube volume, a mercury charge of about 3.0 mg. per cubic centimeter of arc tube volume and a small quantity of inert ionizable starting gas whereby a substantially continuous radiation spectrum is achieved.