US1329280A - Lighting-fixture - Google Patents

Description

A. A. WOHLAUER.

LIGHTING F IXTURE. APPLICATION FILED MAY 24. 1918.

1,329,280. I Patented Jan. 27, 1920.

I Inverzfar M M, 0;. mm

By Aflorne s 0M W (Pm ALFRED A. WOHLAUEZELDF NEW YORK, N. Y.

LIGHTING-FIXTURE.

Specification of Letters Patent.

Patented J an. 2'7, 1920.

Application filed May 24, 1918. Serial No. 236,357.

To all whom it may concern:

Be it known that I, ALFRED A. VVOHLAUER, a native of the Kingdom of Germany, who have applied for citizenship in the United States, and am residin at New York, in the county and State of. ew York, have invented a certain new and useful Improvement in Lighting-Fixtures, of which the fol lowing is a specification.

My invention relates .to the device described in my United States Letters Patent No. 1235951 issued August 7,1917, and is designed as an improvement thereon. The

shade holder therein described is designed to be us'ed for supporting a reflector and a globe ball-or other shield for the source of light.

My present invention has for its object to simplify the construction of said' device, and to increase the efficiency of the lighting unit by forming one of the holding devices so as to cause it to form a baffle plate.

My means of accomplishing the foregoing objects may be more readlly understood by having reference to the accompanying drawing, which is hereunto annexed and is a part of this specification, in which:

Figure 1 is a vertical sectional view of my improved device applied to a lighting unit of the type to which it is applicable. Fig. 2 is a fragmentary detail view show-. ing the Fig. 3

As shown 1n the drawings, my invention comprises an upper and outer dllSl'wShlBld.

and ventilator 3, which is provided with a central neck or stem 4, the walls of which are provided with threads 5, which are adapted to engage threads 6 formed onthe neck 7, of the shade holder proper. This holder is provided with a flange 8, which as shown, is in-the shape of an inverted cone and terminates in a downwardly depending circumferential flange 9, which is adapted to engage a lip 10, formedon the ball or globe, which. incloses the lighting unit.

A plurality of thumb screws 11, are rovided to hold the globe 12in position. he neck of the globe 12 is provided with a shoulder 13, which is adapted to receive an annular lip 14, formed around a central opening of the reflector 15. In assembling the lighting unit, the reflector is first place on the manner of assembling the structure.-

shows a modified form of construo- .tion.

upon the shoulder13, formed on the upper part of the globe 12. The depending flange is then placed over thelip 10, and the thumb .screwsv 11, are tightened up in position.

The. shield and ventilator3, is then screwed down upon the threads '6, until its lower, edge engages the top wall of the reflector 15, as clearly seen in Fig. 1;

v A plurality of openings 16, are formed on the neck or stem of the shade holder globe12, th e annular lip 14, resting proper, for ventilating purposes and serve to carry away the heated air produced byxthe light source which is'permitted to escape through openings 14, formed in the shield and ventilator 3.

. .In Fig. 3, I have shown a m0difieol form s of construction, in which I-provide a supplemental plate 18, which is fitted to' and coincides with the configuration of'the baffle plate 8. This plate is preferably provided with. an' enamel which is baked on, thus affording a Very satisfactoryreflecting surface which noticeably increasesthe light redirected to the. working plane.

Having described my invention, what "I regard as new and desire to secure by Letters Patent of the-UnitedStates, is: 1. A reflector and globe holder, comprising a ventilating :cap, having a neck with threads formed thereon, a globe holder.

mounted in said neck, the lower portion of which is flanged outwardly forming a baflie' plate of inverted conoidal shape, terminating in' a downwardly depending flange, a secondary enamel baflle plate which is fitted to and coincides with theinverted conoidal flange, meansmounted in said downwardly depending flange to hold a globe.

, 2. A reflector and globe holder, compristhreads in the neck. of the ventilating cap,

the lower portion of said lobe holder being flanged outwardly forming-abaflle plate of inverted conoidal shape, terminatin in a downwardly depending flange, a secon ary enamelbaflle plate which is vfitted-to and "ing a ventilating cap, having a neck with too coincides with the inverted conoidal flange,

means mounted in said downwardly depending flange to hold a globe. a

3. A reflector and globe holder formed of an upper member, having a central cylinhaving a central cylindrical portion, having threads formed on the walls thereof, which are fitted to and coincide with the threads formed on the cylindrical portion of the dust and ventilatlng guard, the lower por-' tion of the cylindrical part of the globe holder being flanged outwardly forming a baffle plate of inverted conoidal shape, which terminates in a downwardly depending flange, a globe having a reduced neck adapted to fit the inside of saiddownwardly depending flange, a shoulder on said globe,

a reflector resting on said shoulder, and

means mounted in the downwardly depending flange to engage the neck of the globe. I

'In testimony whereof I have signed'the 20 foregoing "specification.

- ALFRED A. WOHLAUER.

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