US2562063A

US2562063A - Floodlight having divergent angular hood faces with hood lamp apertures and lamp sockets in coaxial alignment

Info

Publication number: US2562063A
Application number: US713619A
Authority: US
Inventors: Harry E Rutledge
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-12-03
Filing date: 1946-12-03
Publication date: 1951-07-24
Anticipated expiration: 1968-07-24

Description

July 24, 1951 H. E. RUTLEDGE 2,562,063 FLOODLIGHT HAVING DIVERGENT ANGULAR HOOD FACES WITH HOOD LAMP APERTURES AND LAMP SOCKETS IN COAXIAL ALIGNMENT 4 Sheets-Sheet 1 Filed Dec: 5, 1946 fiuly 24, 1951 H E. RUTLEDGE 4 Sheets-Sheet 2 2,52,3 FLOODLIGHT HAVING DIVERGENT ANGULAR noon FACES WITHHOOD LAMP .APERTURES AND LAMP SOCKETS IN COAXIAL ALIGNMENT Filed Dec; 5, 1946 1951. H. E. RUTLEDGE FLOODLIGHT HAVING DIVERGENT ANGULAR HOOD FACES WITH HOOD LAMP APERTURES AND LAMP SOCKETS IN COAXIAL ALIGNMENT 4 Sheets-Sheet 3 Filed Dec. 5, 1946 ENTOR.

I V M 24, 1951 H. E. RUTLEDGE 9 9 FLOODLIGHT HAVING DIVERGENT ANGULAR HOOD FACES WITH HOOD LAMP APERTURES AND LAMP SOCKETS IN COAXIAL ALIGNMENT Filed Dec 5, 1946 V 4 Sheets-Sheet 4 Patented July 24, 1951 FLOODLIGHT HAVING DIVERGENT .ANGU-UH LAR noon FACES wrrn noon LAMP.

APERTURES AND LAMP SOCKETS IN C- AXIAL ALIGNMENT V a Harry E. Rutledge, Pittsburgh, Pa; Application December a, 1946, Serial No. 713,619

This invention relates generally to lighting units and more particularly to flood lighting units for illuminating areas around the base of the light and in projected areas extending therefrom.

The floodlight comprising this invention is particularly advantageous for use in lighting service stations, parking lots, railroad yards, transfer depots and the like.

' The principal object of this invention is the provision of a floodlight arranged when supported in the air to provide a continuous light pattern from the base of its support outwardly.

Another object is the provision of a floodlight providing a continuous light pattern which extends substantially uniformly from the base outwardly.

Another object of this invention is the provision of a floodlight providing a clover leaf light pattern.

Another object of this invention is the provision 1 Claim. (01. 240-3) i of a floodlight composed of a plurality of sealed beam lights which combine to form a predetermined light pattern.

Another object is the provision of a floodlight composed of a series of sealed beam lights which do not depend on separate reflectors that constantly require cleaning to maintain lighting efflciency.

Another object is the provision of a floodlight that has a continuous maximum lighting efficiency.

Another object is the provision of a floodlight .having a plurality of controlled beams which combine to provide an improved light pattern of greater intensity than a floodlight of materially greater wattage. Other objects and advantages appear-inth'e following description and claim.

A practical embodiment illustrating the princi- {ples of this invention is shown in the accomfpanying drawings wherein:

Fig. 1 is a prospective view of the hood or casing :of the floodlight comprising this invention.

Fig. 2 is an enlarged sectional view of the fioodlight with a portion of the hood removed and the sealed beam floodlights in position.

Fig. 3 is a sectional view taken on the line 3-3 of Fig. 2. I

Fig. 4 is a top plan view of the complete floodlight.

Fig. 5 is a front elevation of the complete flood- The hood has sir; faces which make it substantially a hexahedral figure but only two of the opposite faces are substantially parallel with each other, namely, the under face [3 and the top face M. The general contour of the base member I l is in theshape of that of a triangular prism, the

ends l5 and I6 of which are substantially parallel and the top I4 is disposed at an angle greater than fromtheback' ll. The front of the base member ll opens downwardly and is bounded on the sides and along the top with the offset flange l8 arranged to receive the corresponding edges of the cover member [2, thus providing an overlapping joint that'prevents the elements from entering into the hood when mounted in the proper position as indicated in Fig. 1.

The cover member I2 is also substantially of triangular prism shape having its sides 20 and 21' slightly converging toward the front of the hood. 'The front face of the cover member is divided into three section faces 23, 24 and 25, each of which are disposed in angular relation to each other. The

end sections

23 and 25 slope away from the center section 24 as indicated in Fig. 6. To bring the three sections together under the flange l8 along the upper edge of the top M of the base member, the front face of the cover I2 is provided with an angularly disposed face 26 which mates with each of the

sections

23, 24 and 25. The cover member I2 is secured to the base member II by means of the screws 21 passing through the flange l8 on the ends of the hood.

The three front faces 23, 24 and 25 of the hood cover member I2 are provided with annular seats dependent part of the cover or it may be cast therein when the cover is formed. Since the seat 31 is disposed downwardly and forwardly and since the

seats

33, 34 and 35 are each disposed at an angle to one another and to the seat 37, these seats provide means for properly locating the electric lamps that they are arranged to receive.

The base member H is provided with a strap light bracket 'member 38' shown in Figs. 2 and 3 arranged to be secured to the ends l5 and It by the bolts 39; 'Ifhis'b'racket is provided with three intermediate sections or seats indicated at 40, 4|

and 42 which sections are disposed in planes substantially parallel with the plane of the

respective sockets

33, 34 and 35 in the front face of the cover member l2.

Electric light seats

43, 44 and 45 are secured to the bracket 38 on each of the sections 40, 4| and 42 and the centers of these 3 electric light sockets are disposed axially with the center of

theseats

33, 34 and 35:0f the "'ilrorlt of the cover member '12.

Owing to the fact that the three faces 23, 24 and 25 on the front of the cover member 12 slope downwardly and rearward-1y toward the bottom face 13 and are also disposed at an angle to each other, the electric lamp 45, arranged to 'be inserted in the electric socket 44 with its outer perimetral edge being received and held by the seat 34, places the beam of light from this lamp at a slightly higher elevation than the beams coming from the electric lamps 41 and 4.8,, which may be seen in Fig. 2. Thus the alignment of the bracket together with the electric light sockets mounted thereon, .cooperatesw'ith the sockets in the front .face of the "hood member 12 toiproperly a'lign-eachbeam of light for produc- "bracket 50 by means of the spacer 53 and the bolt 54 which properly locate the "light socket 5.! relative to the seat 3! in the .face 13 ofthe cover member 1'2. It is preferable not to secure'the outer end of the bracket 50 to the base member II but to allow it to be :free so that it may flex and insure proper alignment between the'lig'ht seat tl and the socket 3"! when the .light'bulb' 52 is screwed home and the glass bulb thereoifengages the inner perimetral surface of the seat 31. The

seats

33, 34,, 35 and '3'] are arranged so that they may receive different sizes of adapters for the purpose of inserting sealed beam light bulbs of different shapes and wattages. In the structure shown

thesealed beam lamps

4B, 41, 48 and '52 are projector floods of 150 watts or greater and arranged to operate .from a .11'5'volt circuit. As previously stated the shapes and sizes of these socket members may be changed to accommodate larger or smaller light bulbs having considerably more wattage.

The back I] of the hood base member is provided with a hollow swivel clamp member 55 having a central opening arranged to receive the bolt 56 for securing the hood to the socket ,member '51. The engaging faces of this clamp member are serrated as indicated at 58 to properly adjust the hood member at any desired angle. The socket member 5.! .has a hollow threaded bore 59 arranged to be screwed .or otherwise attached to the top of the pipe section 50 for the purpose of mounting the floodlight and for carrying the wires to the electric light sockets therein.

The light shown is preferably positioned approximately 15 to 17 feet in the air to produce the light pattern illustrated in Fig. '7.

As shown in Fig. '7 the floodlight hood I is mounted on the top of the post 160 and produces a clover leaf pattern wherein the lamp 52 provides an intense circle of light '61 around the 5 base and to the forward side of the floodlight. The lamp 52, being preferably of higher wattage than the other three lamps, provides a highly illuminated surface on the ground directly below 4 the floodlight. llhe beam of the central light 46 .produces the extended central pattern '62 which intersects the perimeter of the beam pattern BI and extends materially therebeyond. The

beams

63 and 64 of the

side lights

41 and 48 also intersect the pattern BI and the adjacent pattern 62. However the beams of light produced by each "of the lamps overlap one another to form a continuous light pattern, the general configuration of which is in the shape of a fourleaf clover.

In this manner a single fioodlight fixture may be arranged to properly illuminate a considerably large area and owing to the fact that the lamps are of the sealed .beam type they require -Very little service as they may be washed by means of 'a hose from the ground when they are not in service. Other types 'of lighting fixtures of this character employing separate reflecting surfaces must be cleaned frequently in order to obtain the proper light efiicien'cy which they are designed to produce. Thus the floo'dlight comprising this invention provides a material "improvement in the art.

I claim:

A floodlight fixture comprising a hood having three faces on the front thereof, the end'fa'ces of the three being symmetrically disposed at diverging angles relative to the center face, 'a face on the lower side of the portable hoodd'irected downwardly and forwardly at an angle to each of the three faces, an annular seat defining an opening in each face to be engagedby a floodlamp glass bulb larger in diameter than said annular sea-t, an electric socket to receive the base of .a lioodlamp for each face, and means to mount each electric socket within the hood on the same axis as that of the corresponding annular seat of each face to hold the glass bulbs against their seats making them coact to produce .a predetermined .floodlight pattern when the floodlamps are lighted.

HARRY E. .RUTLEDGE.

REFERENCES GIT-ED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,606,200 Williams Nov. 9., 19.26 1,634,694 Smith July "5,. 1927 1,685,609 McClure Sept. 25., 1928 1,954,591 Keith et al. g. Apr. .10., 1934 2,081,790 Braun e May 25,1937 2,134,551 Enfield s Oct. .25, 1938 2,211,258 Delfel l Aug. .13, .1940 2,225,401 Levy Dec. 17, 1940 2,336,016 Jayne et .al. Dec. 7, .1943 2,387,804 lvfiskella Oct. 30, .1945 2,418,283 Wilson Apr.- 1 19$? 2,419,643 Hudson Apr. .29, 1947 FOREIGN PATENTS Number Country Date 456,897 Germany June 19,1928 519,494 England Mar. 28,, 1940 799,980 France Apr. 20, 1936