US1443748A - Lighting fixture - Google Patents

Description

Jan. 30, 1923. I 1,443,748

W. R. KAHNS ET AL. I LIGHTING FIXTURE.

FILED MAR. 28. 1922.

e to the shell in any suitable manner.

Patented Jan. 30,1923.

UNITED STATES PATENT ort-fica.

WALTER B. KAHNS AND KARL KELLER, OF BROOKLYN, NEW YORK, ASSIGNORS T0 J. H. WHITE MANUFACTURING COMPANY, or BROOKLYN, NEW Yonx, A conrona- TIoN or NEW Yoan.

LIGHTING. FIXTURE u Application led March 28, 1922. Serial No. 547,355.

To all whom, it may concern:

Be it known that we, WALTER R. KAHNs and KARL 'KELLmg citizens of the United States, .both residing at the borough of Brooklyn in the county of-Kings, city and State of llew York, have jointly invented an Improvement in Lighting Fixtures, of which the following is a specification.

Our invention relates toportable cluster lighting fixtures, one object being to provide for the adjustment of the lamp sockets to positions of various angles whereby the lamps nay be positioned with respect to shades of various depths; another object being to provide means whereby the -shades may be raised or lowered; also for facilitating the wiring.

The details of construction andoperation of the fixture are hereinafter particularly described. l

In the accompanying drawing:

Figure 1, is an elevation of a lighting fixture embodying our invention, the stem being broken away, and the lamps and shade being shown in an position by broken lines;

Fig. 2. is a sectional view in larger size showing the interior of the shell with the lamp sockets and tubular stem partly broken away, andv Fig. 3 is a sectional view taken on the broken line 3-3 of Fig. 2.

Similar reference characters indicate like parts throughout the several figures.

Referring to the drawing, 10 indicates a shell formed of sheet brass, or other suitablev material, and provided with a removable cap 11.` This cap may be removably connectd e prefer to employ headed pins 12, on the rim of the shell, with bayonet slots 13, on the rim of the cover or cap for this purpose.

The shell 10, is provided with aV central boss 14 on its bottom, through which there is an opening; 15 denotes a tubular stem connected at its upper end with the bottom of the shell and supporting the' same. 16 denotes a yoke within the shell; This yoke has a central horizontal portion 17, comparatively flat, and. provided with an openingof like diameter with the opening in the boss 14, on the shell and in alignment therewith being seated in the bottom ofthe shell.

The extreme upper end 'of the tubular stem- 15, is somewhat "reduced in thickness forming an annular shoulder 18, adjacent its top upon which lthe boss on the bottom of the shell is seated, that portion of the stem above said shoulder passing through the openings in the boss and yoke, and being upset over the top surface of the central horizontal portion ofthe yoke; whereby the yoke, shell and stem are rigidly secured together. They may in addition be further secured together by solder if desired.

There is an annular rib 19, formed upon the shell 10, adjacent its upper end, leaving a corresponding annular'l groove 20 inside the.

shell. The rib 19, forms a seat for-the bottom edge of the removable cap 11.

The yoke at each side of its horizontal portion 17 is extended upwardly in oppositely 'curved directions, the end of each curved portion being sprung into the annular groove 20, insidel the shell 10.

Each of these curved portions of the yoke 16, is provided with a longitudinal slot 21.

On each side of the shell 10, in alignment with the curved arms of the yoke, there is provided an opening 22, of a size to receive and fit the rounded ends 23, of the lamp sockets 24.

25 'denotes two hollow exteriorly threaded studs, one` projecting slidably through each of the longitudinal slots 21 in the arms of the yoke 16, towards the side openings 22, in the shell. 'These studs are connected at their inner ends to guide clips 26, which bear upon thev inner surfaces o f thecurved arms of the yoke 16, and have theirends at each side of said arms bent at right angles as at 27, in such manner thatthese` guide clips are slidable over the inner surface and outer edges of the curved arms and carry the studs 25 with them. The studs 25 are connected to the guide clips 26, through an opening inthe clips, the innerv ends of the 'studs being somewhat reduced in thickness and they may be further secured by solder.

These threaded studs 25 are s'crewed into the interiorly threaded nipples 28, on the lamp sockets 24, drawing the rounded ends 23', of the socketswithin the side vopenings 22,y in the shell 10.

Qwingto the studs 25 being slidable 1n -hole in the tube 30, adjacent its upper end the slots. 21 of the curved armsl of the yoke 16, it will be readily understood that the lamp sockets 24 may be adjusted to any desired angle with respect to the shell 10, and that by screwing the sockets upon the studs 25, until the rounded ends 23, of the sockets' bind within the openings 22, in the shell, the sockets will be securely held in the desired position. v

When'it is desired to alter such position it is only necessary to unscrew the sockets sufficiently. to relieve the binding action, when they may be raised or lowered as desired and again clamped in the desired position by screwing them further upon the studs 25.

The rounded ends 23 of the sockets 24 t into the side openings 22, in the shell 10, in such manner as to prevent the entrance of dust into the shell through such openings. and also avoids any disgurement of the fixture, which might be occasioned if the openings in the shell were exposed.

The lower end of the tubular stem 15, maybe. connected with any suitable base.

A central circular boss 29, is formed upon the top ofthe cap 11, fiat on'the top and p-rovided with a central opening. A vertical tube 30, is secured to the top of the cap through this opening, preferably by' reduc ing the thickness of the tube adjacent its low er end forming an annular shoulder 31, whlch seats upon the top of the boss 29, the

reduced portion of the tube 30, being passed through the opening in the boss and upset against its inner surface around said opening;A it may in addition be soldered if desired. j

32, indicates a tube slidable within the tube 30, and provided with a longitudinal slot 33, in one side.

A screw 34, passes through a threaded and enters the slot 33, in the tube 32. This screw is provided with a head 35, preferably knurled or roughened to provide for its convenient turning by the thumb and.

finger2 and is of a length to contact with the opposlte inner surface of the tube 32, whereby the tube- 32 may be held in any position to which it may be adjusted within the tube 30. Thisscrew also limits the' upward and downward mlovement of the tube 32.

The tube 32 is screw threaded exteriorly a predetermlneddistance at its upper end, and a nut 36 is screwed down uponthe same. A disk 37 is seated upon this nut, the shade 38 being `supported upon said disk. A kuob'pis `then screwed down upon the upper enof the tube 32, bearing upon the shade ring and holding it in posltion upon v the disk.

mesme provided with a plurality of xed arms extending upwardly therefrom and outwardly curved on their upper portions,l`th eir free ends entering said annular groove in the shell, and means connected with said arms for adjustably supporting lamp sockets;

2. In a lighting fixture', the combination of a shell provided with, a plurality of spaced opemngs in its sides, a, removable cover for the shell, a yoke Within the shell secured to the bottom thereof and having a plurality of upwardly and outwardly curved arms, each provided with a longitudinal slot, guide clips slidably mounted upon said arms, threaded studs permanently con;

nected at one end toe-ach of said clips and passing thfrough said slots, a shade, and means connected with .the cover for adjust ably supporting the sh-ade.

3. A lighting cluster, comprising a shell provided with a plurality' of spaced openings in its sides, a yoke within said shell secured to the bottom thereof and having a plurality of upwardly and outwardly curved arms each provided with a longitudinal slot, guide clips slidably mounted upon said arms, threaded studs permanently connected at one end to each of saidl clips and passin through said slots, and lamp sockets screwe upon said studs with their rounded ends fitting into said spaced openings in the shell whereby said lamp sockets may be adjusted .at dii'erent angles relative to the shell.

4. A lighting cluster, comprising a shell 'provided with spaced openings in its sides, a yoke within said shell secured to its bottom and having -a plurality of upwardly and outwardly curved arms each provided with a longitudinal slot in alignment with said openings in the shell, guide clips slidably mounted upon said arms, hollow threaded studs permanently connected at one end to said guide clips and extending lthrough the slots in said arms, lamp sockets having their rounded ends fitted into said openings in the shell and screwed upon said studs whereby said sockets may be adjusted at diderent angles relative to said shell and clamped in the desired position by screwing them tightly on said studs, a removable cover for said shell provided with a central opening in its top, a tube secured at its additional and properly lower end within said opening, another tube a raised or lowered position, a support for 1o inserted in said rst tube and slidable a shade carried by theupper end of said therein provided with a longitudinal slot in second tube, a shade seated thereon, and one side, a screw passing through a threaded means for clamping it in position.

opening adjacent the top of said irst tube Signed by us this 23rd day of March, and through the slot in the second tube 1922.

and of a length to be brought in Contact with the interior surface of said second tube .WALTER R. KAI-INS. whereby said second tube may be elamped in. KARL KELLER.

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