US2645705A - Floodlight having sealed beam lamps focused to form a specific light pattern - Google Patents

Description

July 14, 1953 5 RUTLEDGE 2,645,705

FLOODLIGHT HAVING SEALED BEAM LAMPS FOCUSED TO FORM A SPECIFIC LIGHT PATTERN Filed March 7, 1951 2 Sheets-Sheet l y 4,1953 H. E. RUTLEDGE 2,645,705

FLOODLIGHT HAVING SEALED BEAM LAMPS FOCUSED TO FORM A SPECIFIC LIGHT PATTERN Filed March 7, 1951 2 Sheets-Sheet 2 INVEN TOR, f/dr/y [1' ga /@096.

Patented July 14, 1953 FLOODLIGHT HAVING SEALED BEAM LAMPS FOCUSED TO FORM A SPECIFIC LIGHT PATTERN Harry E. Rutledge, Pittsburgh, Pa.- Application March 7, 1951, Serial No. 214,367 (01. 240-3) 1 Claim.

This invention relates generally to lighting units and more particularly to lighting units for illuminating areas around gasoline stations, depots andthe like.

The light comprising this invention is particu-.' larly advantageous for use in lighting service stations, parking lots, railway yards, transfer depots and the like. i

The principal object of this invention is the provision of a light arranged when supported high in the air and focused to provide a continuous light pattern that will provide substantially good light intensity at a material distance and also adjacent the bottom of the pole.

.Anotherobj'ect is' the provision of a focused flood light providing a continuous light pattern whichextends from adjacent the base of the light outwardly flaring and with .little loss of light upwardly. V

. Another object is the provision of. the light composed of light bulbs of different foci "so that the lightbeams created thereby will produce a light pattern of uniformfintensity in-partsof the pattern. I

Another object is the provision of the'light composed of a plurality of sealed in automobile type headlight beams for producing a controlled focus light beam and a general spotlight beam for producing relatively long and narrow light areas,

, pose of exemplification without limiting the invention or claims thereto, certain practical embodiments of the invention wherein: i

Fig. 1 is a front elevation of a fixed focus light comprising this invention having two automobile type. sealed in headlamps above and two spotlights below.

Fig. 2 isasectionalview taken along the line 22 of Fig. 1. i

Fig. 3 is a front elevation of a fixed focus light having a cluster of three light bulbs, the uppermost being a sealed in automobile type headlight .and the lower two being sealed beam spotlights. Fig. 4 is a sectional view taken along line 4--4. ofFig;3. M

Fig. 5 is a front elevation of an individually adjustable cluster of lights as shown in Fig. 3.

Fig. 6 is a side elevation of the structure shown in Fig. 5.

Fig. 7 is a plan view of a light pattern substantially that produced by the structures of Figs. 3 to 5.

Fig. 8 is a front elevation of a light unit with two focused automobile type sealed in headlights mounted in fixed focus with two spotlights independently adjustable on the sides of the unit.

Fig. 9 is a top planview of Fig. 8.

Fig. 10 is a plan view of the light pattern substantially that produced bystructures of Figs. 1 and 8.

Referring to Figs. 1 and 2 of the drawings a iioodlight I comprises a'casing 2 having an integral and downwardly open swivel socket 3 for mounting on the top of a pipe or pole as indicated The housing 2 is provided with a front panel 5 having a plurality of socket openings 6, I, 8 and 9 for receiving the light bulbs 10, I I, I2 and H. The light bulbs I 0 and II being the automobile type headlight sealed in beamswhereas the light bulbs l2 and I3 are ordinary sealed in spotlights. The recessed opening for the headlights lil and II must be constructed to mount them so as to extend their beams outwardlyand somewhat downwardly from the high position on the pole 4. Neither of these lights can be rotated on their axis from the position shown as thebeam issuing from each of these lights is verycated at 45 and extend in conical shape back to the lamp as indicated in Fig. 7.

These light patterns are determined sockets in thefront panel 5 in combination with the fixed focus of the glass forming the light bulb as both of these lights are sealed in beams. However in order to utilize their beam pattern to advantage they. must be mounted in such a way as to direct their beams to a predetermined fixed focusrelative to each other in order to obtain the desired light pattern. The light pattern such as shown in Fig. 7 can be obtained from a structure such as shown in Figs. 3 and 4 and a light pattern of Fig. l is somewhat similar, although the two automobile type headlights l0 and H produce an overlapping pattern as shown in Fig. 10. When employing two lamps, they are usually not as large or produce as much light as one would emby the vided with a screw base.

ploy in a single lamp I! as shown in Fig. 3 in combination with the two small spotlights i8 and 19 which produce the pattern of Fig. '7

I The same type of a pattern as shown in Fig. 7 may also be produced by the structure as illustrated in Figs. and 6 wherein the automobile type light 29 is mounted in the same relative positions with respect to the sealed in spot beams 2| and 22'.

In the light structure as shown in Figs. l andZ the automobile headlight bulbs l6 and II have a pronged male base 23 that may be connected with the female asbestos electrical socket g4 permanently wired to the control switch.

All of the sealed in automobile type headlights have an annular shoulder 25 around their outer perimeter which is beyond the light path. The socket openings in the face of these set-focused light housings not only properly set each focused lamp but permitthe shoulder 25 to be substantially'flushwith the face of the front panel. A wire bail 26'has hooked ends 27 passing through the holes in the front panel on opposite sides of each lamp Iii, H and I7 and extends around the shoulder 25 to the loop 28 which is fastened by the screw 29 to the front panel. The hooked ends 21 act as hinges and by removing the screws 29 from the panel the bails carrying the screws will hinge downwardly to allow the lightbulb to be removed; A bracket 30 is secured to the back of the housing 2 for supporting the screw sockets 3| for the lights I2 and i3 wh'ich'are pro- As indicated the wires maybe connectedto supply electrical energy to all four of the lights in the unit. I

V In the structures, as shown in Figs. 3 and 4,

the hood 32 is provided with a face plate or front panel 33 and has the socket openings 34, and 36 to receive the light bulbs I1, l8 and I9, respectively. This hood likewise is provided with a downwardly open swivel socket 3 for receiving the pole 4. Thebracket 30 supports the lights i8 and i5 and is secured to the hood 32 in a manner similar to that previously described. The socket openings 34, 35 and 35 are. properly positioned relative to each other to direct the focused lamps and produce the pattern shown in Figf'l. By mounting these lamps one can depend on this prefocusecl'structure and merely adjust and position the whole unit in the direction and position desired. Y I

In the structure, as shown in Figs. 5 and 6, the'unit is mounted on the socket 31 arranged to be inserted over the pole 4 and secured thereto.

' This light unit has a transverse cross arm 38 which is formed integral with the socket 3'! and is hollow to receive the wires therein. An upwardly extending bracket arm 48 is likewise formedintegral with the cross arm 33 and is proof these lamps. Aside from being able to adjust these lamps independently they can be made to produce substantially the same pattern as the I the pole.

, having downwardlysloping back and sides joined structure shown in Figs. 3 and 4, although it is 4 that is maintained by the fixed light unit of Figs. 1 and 3.

- The structure of Figs. 5 and 6 enabled one to focus his own lights and the three-leaf cluster structure is provided for this purpose. If these individual lights are not carefully adjusted on their swivel sockets the resulting light pattern will be inefficient and it Will not provide the proper illumination that could be obtainable from this structure if properly set.

Referring to Figs. 8 and 9 the lamps i9 and l l are mounted in asmall housing 3% in the same manner and in the same relative position as that disclosed in Figs. 1 and 2. The housing d8 may be much smaller in size since it does not have to be deep enough to contain the lamps i2 and I3.

Howeverthe setting of the lamps prefocuses them maximum efficiency from the lighting unit. It

is difficult toproperly direct the lamps of Figs. 5

and 6, but it would be more diificult if there were four focused lights as in Figs. 1 and 8. The wide elliptically shaped beams are guided by the sock ets in the faceplates ofthe units, and, thus, pro vide the maximum efficiency froin'these lamps, v In each of the structures the use of the automobile headlight type bulbs closely coupled with ordinary spotlights provides a dual focus light unit that produces a light pattern of higher efficiency than any other known lighting fixture for this purpose. These dual focused lights in each lighting structure produce a pattern wherein the focused upper. lights spread over an-area which is. substantially elliptical and at a distance from The smaller spotlights are likewise focused and supply the illumination from the bottom of the pole'to the light pattern of the focused lights. The spotlights do nothavethe intensity of the automobile type'focused lights and .the broad beams of the latter are-more suited to light up areas remote of the supportup those areas'inwardly adjacent thereto. The socket openings pre-position the broad focused beams and the socket openings together with the screw base direct the focus of the spotlight beams. .The glass reflector bulbs of both types of lights focus their beams but the fixture utilizes these foci to formulate a dual focused light pattern which provides a material advantage in lighting up areas.

'While, for clarity of explanation, certain pre-j ferred embodiments'of, this invention have been shown and described, it is to be understood that this invention is capable of many modifications, changes in the construction and arrangement maybe. made therein and certain parts may be employed without the conjoint use of other parts and without departing from the spirit. and scope with a bottom, mounting means on said hood to support the light in the air, a panel on the light for illuminating m of front of said hood and having a plurality of seat means in upper and lower tiers to receive light means providing small circular light pattern mounted in said lower tier, socket means mounted in said hood to receive the base of said spotlight bulb means, said seat means and said socket meansdirecting a combined light pattern with the wide elliptical light pattern of the headlight bulb means covering the outermost area and the circular light pattern of the spotlight bulb means intersecting the near side of the elliptical light pattern to form a predetermined light pattern of substantially uniform light intensity. HARRY E. RUTLEDGE.

References Cited in the file of this patent UNITED STATES PATENTS Name 7 7 Date Rutledge Jan. 6, 1942 OTHER REFERENCES Publication, Rutledge Island Flood Lights No. 1949, Rutled e Equipment Co., 334 Boulevard of Allies, Pittsburgh, Pa.

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