US2286851A - Fluorescent lamp - Google Patents

Description

lamp and connec the present em Patented June 16, 1942 Lowenberg, New York, N. Y. Application December 9, 1940, Serial No. $69,302

2 Claims. (01. 240-81) The present invention relates to portable fluorescent lamps and its object is to provide a lampv particularly adapted for. draftsmen, designers, colorists, and for those purposes requiring the throwing of fluorescent light from various angles and positions upon objects somewhat closely associated with the fluorescent source of light. The basis of the invention isthe formation of a reflector and fluorescent lamp carrier independently of the transformer, the, mounting of the same upon a flexible goose neck rising from a base-mem ber which encloses the transformer and is rendered stable by the weight of the latter and that of the base member, that the reflector with the lamp carried thereby may be moved independently of the transformer over a wide range of positions relative to the transformer and toward and from the work under preparation or examination without movement of the transformer.

The invention will be described with reference to the accompanying drawing, in which:

Figure 1 is a view in an embodiment of the invention, being shown by dotted lines.

Figure 2 is a view similar elevation.

certain elements to Figure 1 in front Figure 3 is a transverse sectional elevation on, I the line 3-3. Figure 2.

Figure 4 is a fragmentary vertical section on the line 4-4, Figure 3.

Figure 5 isa top plan view of the reflector, the ting elements being shown in dotted lines, the goose neck connection being shown in full lines and connected to the reflector to the left of its center construction in Figure 2.

Referring to the draw a transformer enclosing former being indicated by dotted lines at 2. 1n ent base member I is formed as a box having a bottom closure plate is to which are attached depending supporting feet 3. At the top of the box is a switch member 4 con- 1 have shown at l -trolling the wiring which is shown diagrammatically at 5.

The top of the of four wires 5 comprising two cathode and two anode wires, one set,to wit, a cathode and an anode wire being required for each contact end of the fluorescent lamp. Secured to the top of the box and surrounding the wire aperture therein is a tubular connector 8 for a flexible goose neck I which is of the same structural formation as the customary Bx electrical conduit in comthe arrangementbeing such,

' may carry'a connector of reflector 9. In Figures mon use, but which in practice will bev made up with a decorative plating or coating as, for example, with a chromium plating or an enamel the goose neck I the latter 8 secured to the back wall 1 and 2 the point of connection between the goose neck and the re- At the upper end of flector is at the center of the latter. The reflector may be'of any suitable formation as to the position and relation of its reflecting surfaces for the fluorescent lamp ill carried thereby. The back wall 92: of. the reflector is apertured to receive side elevation illustrating two spaced contact posts ll earni spaced contacts I! for the cathode and anode post leads l3 of the fluorescent lamp l0. At the rear of wall 8.1: each contact post is formed with a right angular extension I i1: apertured to receive a screw bolt l4, the latter passing through wall 91: and through a cap plate l5 which encloses the posts and the wiring therebetwee'n, the cap plate being held in position by nuts l6 threaded on screw bolts ll as shown more particularly in Figure 3. Each of the right angular extensions Ila: of posts it receives cathode and anode conductor screws for appropriate cathode and anode wires 5, the conductor screws being indicated at H, Figure 4.

In' the construction of Figure 5, theconnection between the goose neck I and the reflector is toward the left hand end of the latter and by means of any suitable ball or universal connection indicated at l8. Such ball connections are as compared with the base membenthe transwell known in the mechanical art and do not require specific description or illustration. There are certain advantages in the structure of Figure 5. For example, the major area of the fluorescent lamp may be brought down toward the work by swinging the reflector downwardly without changing the position of-the goose neck, and a greater range of angular adjustment is permitted.

By means of the invention, may be conveniently employed in all cases where it is required that articles on a supporting table be illuminated for examination or work with the fluorescent rays thrown upon the respective article from various angular adjustments of the lamp quickly and easily obtained without changing the position of the relatively heavy transformer and whilst maintaining the full stability of the device.

a A further and more important use of themvention is in connection with sewing machines.

Thus the lamp may be carried by a bracket secured to the sewing machine head and the position of the reflector with the fluorescent lamp carried thereby may be quickly adjusted to throw a fluorescent lampfluorescent rays in accordance with the particular nature of the sewing machine and conditions of general illumination.

assess:

,. ray-reflecting carrier and lamp held thereby may Having described my invention, what I eieun flexible goose neck carried :by the casing, cathode and anode wires leading through the goose neck to the transformer, a ray-reflecting carrier at the outer end of the goose neck, cathode and anode posts within the reflector, one at each end-thereof, each post being formed with a right angular extension aperture to receive a screw bolt,'the angular extension of the posts extending rear wardly of the reflector, a longitudinally extending housing at the rear of the reflector, bolts passing through the reflector and the angular extensions of, the posts and secured to the housing, contacts carried by the posts within the reflector and connected to said wires, the wires being led through the said housingand a fluorescent lamp held by the reflector and having contact leads engaging said contacts, whereby the relatively to the transformer.

be moved to various positions relatively to the transformer.

2. In fluorescent lamps, a transformer and a ray-reflecting fluorescent lamp carrier having cathode and anode contacts for engagement with the cathode and anode leads of a fluorescent lamp, a hollow flexible carrier intermediatethe transformer and the ray-reflecting carrier and supporting the latter upon the transformer and conductor wires. leading from the transformer through said hollow flexible carrier and to the contacts of the ray-reflecting carrier, the point 01' connection between the flexible hollow carrier and the ray-reflecting carrier being near one end of the latter and the means of connection being a universal swivel iormed as a conduit and enclosing protection medium for the conductor wires led through the hollow flexible carrier and leading to the contacts 01 the ray-reflecting carrier, whereby the ray-reflecting carrier and lamp held thereby may be moved to various positions DAVID HESS.

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