US1248187A

US1248187A - Lighting-fixture.

Info

Publication number: US1248187A
Application number: US14347517A
Authority: US
Inventors: Esmond M Smith
Original assignee: Individual
Current assignee: Individual
Priority date: 1917-01-20
Filing date: 1917-01-20
Publication date: 1917-11-27
Anticipated expiration: 1934-11-27

Description

e. M. SMITHA LIGHTING FIXTURE.

APP-LIATIQN m50V IAN. 2oA 1917.

E. Patented. Nov. 27. 1913?.

hmmm? i Jilin@ i tisana 'rc :taormina other .application filed January t, 23.917.

To all whom 'may concer/a. Be it known that l? @Estreno M. un, a citizen et the United States, and a reeident of the city, county, and State ci? New t York, (formerly of ChicagoJ1 illinois) have invented a certain new and useful Lighting Fixture, of which the following is a specinca-tion.

My invention relates to lighting xtures 1o and more particularly to devices used in indirect and semi-indirect, illumination in which an opaque or translucent globe or bowl is suspended below a reflector in such a lmanner that the direct rays of light are te prevented from reaching the eyes of the observer and in which no shadows of intervening objects will be cast upon the reector, or upon the ceiling if a reector be not employed.

2o The object ofmy invention is to produce 4 a lighting fixture having a globe howl supported below a ceiling or other reiiecting surface in such a manner that the supporting means are inconspicuous. 2e A further object is to provide means whereby the globe or bowl may be easily applied to or removed from the iiirture by :means which are located outside of the tixture. to These and further objects will more fully appear in the following specification and accompanying drawings considered together or separately. I

li have illustrated one embodiment of my 35 invention in the accompanying drawings in which like parts are designated by similar v reference characters in all of the figures, and

in which l Figure 1 is a sectional view of a lighting to fixture embodying iny invention.

Fig. 2 is a detail sectional view of the support guide-thimble, the section being taken on the line yindicated by 2-2 in Fig. Fig. 3 is a similar view of the support to loclingsleeve, the section being taken at the point of the greatest diameter of the sleeve.

F ig. 4 is a top plan view of the shade supporting Shelly-and Fig. 5 is a detail view of a modification.

50 lin carrying out my -invention I provide a base 1 secured to the ceiling 2 and covering' a. junction box 3. in the rembodiment `of the invention illustrated this base is formed of sheet metalA and of conical form.. .t5 To 'the lower extremity oi the base is sepecication or Letters .Fate-nt.

restanten nea at'. 'ile-as..

ite. 143,475.

cured by screws el or otherwise a'thimble 5. The lower extremity of the thimble is closed by means of a plate 6 and an outwardly ein tending peripheral flange 7 extends around the lower edge of the thimble. The dange t@ 7 is provided with a plurality of radial slots 8, three being shown. The body of the thimble is perforated at 9. The perform tions are three in number and each is in vertical alinement with a slot 8. ln each 65 perforation 9 the hooked end of a spring arm 10 engages. The arms. 'Xtend vertically downward and pass through the guide slots 8. The arms are then cuved outward and their tree ends terminate in hooks which 7o engage a head or iiange 11 on the upper edge of'a globe or bowl 12.

- Secured to the upper part of the thimble 5 by means of a bayonet joint 13 is a shell 14 in the lower end of which a reflector or 'it artificial ceiling 15 is secured by means of screws 16 or otherwise.

A locking sleeve 17 surrounds the tiinble 5 and isrotatable relatively thereto. The sleeve is secured in place by means of a bead 80 18 turned over the peripery oi' the Flange 7. A plurality of earns 18, one for each spring arm 10 is carried by the lower end oi the locking sleeve and one disposed below the plate 6 and flange 'i'. The cams contact with Sti`v the spring arms and secure them against spreading. ne of the cams is provided with a notch 19 near its high part. The upper extremity of the sleeve 17 is provided with two fingers 20, which project through il@ slots 21 in the shell 14. The fingers 20 are accessible from outside of the fixture and the sleeve may be rotated and the arms 10 may be adjusted to be engaged with or disengaged froln th'e bowl l2 with rapidity and 95 ease and without dismantling the structure.

Secured within the lower extremity of the .base 1 above the thimble 5 is a ring 22 to which is secured a socket. rlhe socket is composed of two parts 23 and 24 secured 1100 together by means of screws 25 or otherwise.` The upper part of thev section .23 oi the socket is reduced in diameter and this reduced portion. forms, when the two parts are secured together, a circumferential tot groove 26 with which the ring 22 engages and supports the socket. A lighting element 27 is secured in the socket inthe usual manner. t

The bowl or globe is so positioned relait@ 'concave upper surface of the bowl together with rays of light from the lamp' which have not been so reflected willzbe cast on the lower surface of the reflector l5, and thence reflectedlinto the room or other space to be illuminated. The concave surface of the bowl is rendered diffusive by having its reflective surface brokenl up by means of ribs or corrugations, orby sand blasting or acid etching, and the .diffused light reflected from the bowl will scatter and disperse the shadows of the arms 10 and no shadows or halations will be cast upon the surface of the reflector 15.

For indirect lighting the outer surface of the bowl may be silvered and the silver protected by paint or other suitable covering. For semi-indirect lighting the bowl is translucent 'so that some of the light may pass throughit and be diused.

The spring supporting arms are given a reverse curve relatively 'to the curves of the bowl so that when the fixture is viewed from the floor they will be hidden by theedge of the bowl which will appear to'be freely suspended in the air. The arms are fashioned of thin spring metal so that the shadows cast by them will be insignificant and easily dis.

4will engage the flange on the bowl and the arms will be held in that position. When the arms are locked in engagementwiththe bowl, one of the arms will engage the notch 19 and prevent accidental rotationl of the sleeve. When it is desired to release the bowl from the arms considerable force will be required to-rotate the sleeve to release the arm from the notch. The sleeve may now be rotated in the anti clock-wise direction and the natural spring of the arms will release'the hooks at their ends rfrom the flange of the bowl.

The bottom plate 6 is 'treated in the same manner as is the surface of the reflector whereby the reflector will appear to have a continuous surface broken only by the thin wire arms and the stem of the lamp.

Instead of the open cams 18a the locking sleeve 17 may be provided with a bottom flange member 28 which is provided with cam slots v29 corresponding to the cams 18a. The spring arms 10 pass through the slots 29 and the arms may be moved toward or away from the center of the sleeve as 'the latter is rotated in one direction or the other. One of the .slots is provided with a jig car- 'rying a notch'similar to the notch Ai9 to have it understood that the appaiatus f shown is merely illustrative, and that, the invention may, be Carried out'in other ways'.

Having thus'described my invention what l now claim and desire-to secure -Letters Patent, is:

1. A lighting fixture having e. support, a lighting element, a globe or surrotmding the. element,` al member carried by the support, arms carriedf'by. the .mancher and supportingthe globe orbowl, a reiiector sup ported by the member in opposed relation to; the globe or bowl, said member having a re' ecting surface in linewith vsaidreflector.

v 2. A lighting xture having a support, a lighting element, a globe or bowl surrourai- `ing the element, ameinber carried by the support, arms carried` .by the member and ried by the support, la shell removably se.

cured to the' member, and. a reflector carried by the shell, the said reflector' having an opening therein, the bottom of the member being approximately in line with said rev ector and closing 'the opening whereby the reflecting surface will be uninterrupted.

4t. A lighting xture, havinga support, a lighting element, a globe or bowl inclosing the element, a thimble carried by the support, a plurality of filamentous .spring arms carried by the thimble, a iange on the thimble, there being a slot in the flange for the reception of each arm, a sleeve supported on the flange, a cam carried by the sleeve, for engagement with each arm, a notch in a cam, and means lfor rotating the sleeve to engage the arms with the -bowl to support the same, a shell surrounding the sleeve, said rotating means extending through the shell, and a reflector carried by the shell,` the thimble having a bottom forming a reflecting surface, and means for removably securing 'the shell to the thimble.

5. lighting fixture, having a support, a lighting element, a globe or bowl inclosing the element, a thimble carried by the support, a plurality ofI filamentous arms carried by the tlnmble, a flange on the thimble, there being a slot in the flange for the reception of each arm, a sleeve supported on the flange, a flange on the sleeve, there being a cam slot icc .the Hangs `on thev sleeve, for engagement forming. a reectng surface and means for mthfeach arm, there bemg a notch m a slot. removably securing the shel to the `thimble. L@

,s for engagement with an arm, and means for flhs specification signed and. witnessed lxotatmg the Sleeve to engage the arms wlth 'thls twelfth day of January, 1917.

,file b'Qwl to support the same, a shell sur- ESMOND M. SWTH.

'Ioundlng fthesleeve, said 'rotatmg means eX- Witnesses: tending through the she11,'a reector carried A. E. REM'ON,

bythe-shells the thmble having al bottom Jams F. Comm.