US1970829A

US1970829A - Floodlight

Info

Publication number: US1970829A
Application number: US643568A
Authority: US
Inventors: Jacob H Wise
Original assignee: Individual
Current assignee: Individual
Priority date: 1932-11-21
Filing date: 1932-11-21
Publication date: 1934-08-21
Anticipated expiration: 1951-08-21

Description

J. H WISE FLOODLIGHT Aug 21,. 1934-.

Filed NOV. 21, 1932 2 Sheets-Sheet l A TTORNEYS Patented Aug. 21, 1934 UNITED STATES PATENT OFFICE Claims.

provide a visor in connection with the reflector v 0f the flood-light which confines the light irrespective of the position to which the flood-light reflector has been adjusted.

Another object of the invention is to suspend the lamp in the reflector by a means which permits the adjustment of the lamp to correct errors in the installation of the flood-light.

With the above objects in view, and any others which may suggest themselves from the specifica tion and claims to follow, a better understanding of the invention may be gained by reference to the accompanying drawings in which- Fig. 1 is an elevation of the novel flood-lamp;

Fig. 2 is a plan view, partly broken away;

Fig. 3 is an enlarged section on the line 3-3 of Fig. 2;

Fig. 4 is an enlarged section on the line 4--4 of Fig. 1; and

Fig. 5 is an elevation of a detail.

In the installation of flood-lights of the type mentioned, a post is used from which the floodlight extends in the nature of a bracket. Some installations provide means for adjusting the angle of the bracket whereby to direct the illumination to the best advantage or to points particularly desired, in which event the incandescent lamp used in the reflector is caused to assume a corresponding angle. As the lamp is designed to be used in pendent vertical position, it will be apparent that the tilting of the lamp away from that position will induce the tungsten filament wires in the lamp to sag in time and to break, shortening the life of the lamp considerably. It has therefore been my intention to make the novel flood-light adjustable in such ways as to permit the use of the lamp in the prescribed position whereby to function as long as possible.

In carrying out the invention, a specific reference to the drawings indicates the supporting post for the flood-light at 10, the same being hollow and receiving at its upper end a base 11 for the bracket or fixture 12 of the flood-light. The base 11 is fitted with a head-piece 11a, and the bracket also receives a cap 12a, both of these mountings being preferably fitted by friction.

The bracket is extended with the bell-like hood 13 of the flood-light, the same having horizontally perforated ears 13a at the front to receive 2. lug 14 carrying the reflector 15. The latter is thus pivotally hung from the hood 13 of the bracket 12, and it will be understood that by adjusting the swing of the reflector up or down, the illumination or reflection may be cast to points of best advantage or eificiency.

The flood-light lamp is indicated at 16, and the socket therefor at 17. The socket receives a ring 18 around it, the, ring having upwardly extended lugs 18a which are secured upon the socket by screws 18b, thus fastening the ring to the socket. The ring has oppositely extended trunnions 19 which reach to the sides of the hood 13 and receive thumb-screws 20 from the outside, the shanks of the thumb-screws passing through bores 131) made in the side walls of the hood 13. It will be understood that the trunnions 19 permit the lamp 16 to be swung forwardly or rearwardly; and the thumb-screws 20 are tightened to fix the position to which the lamp has been adjusted. The feed wires 21 extend from the socket of the lamp through the bracket 12 to be joined by splicing 2111, or any other suitable method, with the main supply leads 22 rising through the post 10. It will be seen at this juncture that the cap 12a may be removed for the inspection or repair of the socket or wires 21, and the head-piece 11a may also be removed when it is necessary to make the splicing 21a or inspect the same.

The reflector 15 has an upward visor extension or shield 15a inside the hood 13 which functions to confine the light within the hood and reflector when the latter is swung down a number of degrees.

The swinging adjustment of the reflector is fixed by a simple expedient involving a hasp 23 hingedly attached to the reflector at 23a. The hasp is longitudinally slotted, as indicated at 23b, to allow the shank 24a of a carriage bolt 24 mounted in the back wall of the hood 13, to pass through the slot and to receive first a washer 25 and a wing nut 26. The contiguous surfaces of the said back wall and the hasp are in the form of tooth-racks 27 which may mesh at any height to which the hasp is set in conformity with the angular adjustment of the reflector 15.

It will be seen from the above description that the angular adjustment of the reflector is accomplished independently of the position of the lamp 16. The bracket 12 may be swung laterally to any desired position by means of the base 11, which has an internal bead 11b resting on the upper edge of the post 10, a set screw 28 serving to fix the base to the post at the proper position. In case the post is so erected that the lamp assumes a somewhat inclined position in a forward or a rearward direction, it will be seen that the thumb-screws 20 may be slightly loosened to set the lamp in the proper or vertical position, and again tightened to make this position permanent. Thus, the novel flood-light has the advantages that its light may be cast as desired,

and that its lamp is adjustable to function in the proper position and thus have a long period of use.

I have included an internal reflector 29, secured to the regular reflector by screws 30, for concentrating the light of the lamp along a medial path.

I claim:

1. A flood-light comprising a hood, a lamp mounted therein, a reflector depending from the hood and swingably connectedat one side to the latter, the wall at the opposite side of the hood being made with a vertical tooth-rack, a hasp rising from the reflector and made with a tooth-rack adapted to mesh with that of the hood, and means to secure the hasp at any point of vertical adjustment to maintain the reflector at a desired angle relative to the hood.

2. The structure of claim 1, said means comprising a screw passing from the angle through a vertical slot in the hasp, and a securing nut externally of the hasp to make the latter fast.

3. A flood light comprising a hood, a lamp mounted therein, a unitary reflector surrounding the lamp pivotally connected to the hood, said reflector having a shield within the hood, means for movably adjusting the reflector and shield relative to the lamp and hood about the pivotal connection, said shield in all positions of adjustment cooperating with the-lamp to confine the light therefrom within the hood and reflector.

4.. A flood light comprising a hood, a lamp movably mounted within the hood for lateral adjustment with respect thereto, a reflector surrounding the lamp pivotally connected at one side to the hood below the lamp mounting, securing means between the hood and reflector opposite the pivotal connection, said means comprising a part secured to and vertically movable with the reflector and a stationary cooperating member on the hood.

5. A flood light comprising a hood, a lamp socket carrying a lamp movably mounted within the hood including oppositely arranged trunnions extending from the socket through the hood, means externallyof the latter cooperating with the trunnions for holding the lamp in adjusted position, a reflector pivoted to the hood, and surrounding the lamp, a shield secured to the reflector extending into the hood beneath the trunnions, and means for securing the reflector and its shield in its pivoted position with the shield cooperating with the lamp to. confine the light therefrom within the hoodand reflector.

JACOB H. WISE.