US1480189A - Electric-light fixture - Google Patents

Description

STATES WALTER E. WALSH, OF WINTHROI, AND HOWARD C. JONES, 0F

' MASSACHUSETTS.

PATENT OFFICE.

wn'rnazrown,

ELECTRIC-LIGHT FIXTURE.

Application filed March 17, 1922. Serial No. 544,450;

T 0 all whom it may concem:

Be it known that we, WALTER E. WVALsH, a citizen of the United States, residing at -Winthrop, in the county of Sufiolk and State of Massachusetts, and HOWARD C. J ONES, a citizen of the United States, residing at Natertown, in .the county of Middlesex and State of Massachusetts, have invented new and useful Improvements in Electric-Light Fixtures, of which the following is a specification.

The objects of our invention are first, to provide a fixture of novel construction for incandescent electric lamps, which construction is adapted to difiuse and predetermine the direction of the rays of light, to increase the volume of light on the working plane, and to prevent eye strain and annoyance from glare. Secondly, to provide a simple and compact structure for these purposes.

The essential feature of our invention is the employment of one or more opaque rings shaped like the frustum of a cone, surrounding the lamp, and in close proximity thereto.

Referring to the accompanying drawing in which like numerals of'reference indicate corresponding parts in the various figures thereof, Fig. 1 is a vertical section of the preferred form of our invention, showing certain portions of the lighting fixture in elevation. Figs. 2 and 3 are vertical sections respectively of modifications of our invention, showing certain portions of the lighting fixture in elevation.

Referring to Fig. 1, 4 is an ordinary electric lamp supporting holder found in common use, and containing a lamp socket; 8 is a downwardly reflecting member of familiar form, and secured to the holder 4 by bolts 7, or in any other suitable manner. Adjustably secured to the holder 4, by means of thumbscrews 6, or in any suitable way, is a translucent glass or other glass globe such as is well known to the trade. Any desired type or form of globe, bowl or shade may be employed interchangeably, and of any size which is suflicient to enclose the lamp and the requisite parts of our invention. 9 is an incandescent electric lamp the neck of which extends through the reflector 8, into a suitable soclret in the holder 4. By means of a plurality of chains 10, secured to the holder 4, through the reflector 8, two rings 11 are suspended. Any means of suspension,

it is obvious, may be employed without departing from our invention.

The rlngs 11 are opaque or substantially so, made preferably of metal, and possessin light-reflecting surfaces. The upper conica ring is inverted so that the narrowest space between it and the bulb 9 is at the lower edge, while the space between the bulb 9 and the lower ring 11 is at its upper edge. The lower edge of the upper ring 11 and the up per edge of the lower ring slightly overlap, leaving a narrow space between the edges for the passage of light. The rings 11 are connected together by a strap 13, which ter-.

minates at its upper end with a flange through which the chain- 10 extends, and

supports the strap 13, and in turn the rings 11 to which the strap 13 is secured.

The height of the rings 11 may be regulated by the length of the chain, but the preferred position is to have the juncture of the rings 11' in about the same horizontal plane as the extremity of the filament of the lamp. It is obvious that the rays of light below the filament will be deflected downwardly by the lower ring; 11, and the rays above the extremity of the-filament will be directed up wardly, and'that by reason of the rings 11 and the globe, no inconvenience from glare will be felt from any direction.

We have discovered that conical rings but slightly larger in diameter than the bulb, the smallest diameter of the ring not exceeding the diameter of the bulb more than one inch, and preferably not more than a half inch, will accomplish all that has been heretofore attained in the diffusion and predetermined direction of light by reflectors of great size, and extending widely beyond the bulb. We are able, thereby, to house all the parts of our device within a globe of small area, resulting in simplicity and economy of construction, and a lighter and more attractive fixture.

In Fig. 2 the essential features of our invention are the same as shown in Fig. 1, but modified structurally, so that both rings 11 have their smallest diameter downward, thereby deflecting the rays upwardly. Also the translucent globe 16 is shown of small dimensions, and supported by the straps by which the rings 11 are suspended, the straps terminating at their lower ends in a tongue 15, which springs and fits into the groove 21, on the inside edge of the globe 16.

It is to be understood that the globe I6 is not necessarily to take the place of a larger outside globe or shade, for the latter may be used, and generally lwould'be used there with. It is obvious that when an enameled bowl lamp is used, the globe 16, shown in Fig. 2, can be dispensed with.

In Fig. 3 we have shown but one conical ring 11, and that with its smallest diameter ow t t reby deflec ng t e i ht 1 P- wardly. The globe 6 v and' its met d of support are the same as shown in Fig. 2, andprovide aj compact, neat and efiic'ient device, although the form shown in Fig. is susceptible, of a greater variety of results in the difiusionan'd direction of; light. It is evident that the conical rings be made of a great, variety of widths and angles of inclination, enablin one to 01 c strate or difi fse the. light at will with out subjectiiig: the user to a disagreeable glare, and at the same time to maintain all the parts of the fiiiturewithin a proximately a smallarea.

In some instances it is desirable to' use more than two eonical rings, especially where a lamp of large size is employed and we do not limit our invention to any particular number of conical rings,but include therein any number that may suit the occasion, and. therefore specify a plurality.

What we claim and desire to secure by Letters Patent is; V J

p 1, In an electric li-ghting fixture the combination of an electric lamp and two trusteconcial rings surroundingthe same and in close relation thereto, said rings being supported one above the other, the lower ring flaring downwardly and outwardly and the upper ring flaring upwardly, the upper edge oi the lower ring overlapping the lower edge of the upper ring, said rings being separated by a small annular space.

2. In an electric lighting fixture the combination of an electric lamp, a reflector above the 1 same, and two frusto-conical rings surrounding said lamp and in close relation thereto, said ringsbeing supported one above the other, the lower 'ringflaring downwardly and outwardly and the upperring flaring upwardly, theupper edge of the lower ring overlapping the lower edge of the upper ring, said rings being separated by a small annularspa'ce.

3. .In an electric lighting fixture the combination of an electric lamp, a reflector above the same, and two frusto-eonical rings surrounding said lamp and in close relation thereto, said rings being supported one above the other, the lower ring flaring downwardly and outwardly-and the upper ring flaring upwardly, the upper edge oi the lower ring overlapping the loweredge of the upper ring, said rings being separated by a small annular space and enclosed within a globe. 7 i 3 In testimony whereof we have hereunto set our hands in presence of two subscribing witnesses, this third day of 'March; 1922.

WALTER E. WALSH.-

HOWARD G. JONES: Witnesses:

' A. G- SU A z M; Sullivan.

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