US2285002A

US2285002A - Lighting fixture

Info

Publication number: US2285002A
Application number: US309361A
Authority: US
Inventors: Wilson Wesley
Original assignee: WILSON LIGHTING Inc
Current assignee: WILSON LIGHTING Inc
Priority date: 1939-12-15
Filing date: 1939-12-15
Publication date: 1942-06-02
Anticipated expiration: 1959-06-02

Description

June 2, 1942. w. WILSON 2,285,002

LIGHTING FIXTURE Filed Dec. 15, 1939 2 Sheets-Sheet 1 g3 mm vJ/Z a June 2, 1942. w wlLSON Q 2,285,002

LIGHTING FIXTURE Filed Dec. 15, 1939 2 Sheets-Sheet 2 Patented June 2, 1942 LIGHTING FIXTURE Wesley Wilson, Chicago, Ill., assignor to Wilson Lighting Inc., Chicago, 111., a corporation of Illinois Application December 15, 1939, Serial No. 309,361

6 Claims.

My invention relates to lightingfixtures.

One of the objects of my invention is to provide a lighting fixture for overhead locations which, when installed, may give a substantially flush appearance and in which a reflector carrying the lamp or bulb can be rocked or tilted in any direction in order properly to direct the light in a desired direction.

A further object is the provision of a ceiling fixture in which the light-directing unit including the bulb and reflector may be tilted around a center through a comparatively wide angle in substantially any direction and be retained in adjusted position by friction induced by gravity.

A further object of my invention is to provide a construction in which the glass cover can be easily and quickly removed and replaced to enable the lamp to be replaced or the reflector to be cleaned.

Another object is the provision of a fixture of the character described in which a' so-called sealed beam bulb having a reflector and cover glass or lens intimately associated therewith, and which, for convenience herein, may be termed a reflector bulb, forms a part of an adjustable unit which ma" be tilted around a restricted center of gravity gion substantially on the vertical axis of the unit to distribute the total weight of the unit on an annular support around said axis to thereby retain the unit in adjusted position by friction.

A further object is to provide a fixture in which the required adjustment may readily be effected away, showing the reflector mounted and in tilted position.

Fig. 2 is an axial sectional view of the embodiment shown in Fig. 1 and illustrates the i manner of removing the glass cover.

smaller housing with the bulb closer to the ceiling.

Referring to the drawings in detail, the embodiment shown in Figs. 1 and 2 comprises a concave reflector l which may be formed as a surface of revolution about the axis of the reflector; an annular band 2 surrounding the reflector adjacent its periphery and secured to the reflector as by spot welding, or the like, and having a substantially spherical outer surface; and an annular supporting member 3, which may be of sheet metal or the like, engaging the spherical surface of the supporting band 2 for supporting the band 2 and reflector thereon for universal rocking movement, whereby the light from the reflector may be adjusted angularly in any direction.

1 The supporting member 3 may be secured in any suitable manner to a ceiling construction 4. The reflector can be rockably adjusted in any direction simply by grasping the lower portion of the annular band 2 and exerting pressure to cause the spherical surface of the supporting band to slide on the annular edge of the supporting member 3. The weight of the fixture is suflicient to cause friction to hold the fixture in any position to which it may be adjusted. The annular bead 5 on the band 2 and theannular shoulder 6 on the lower edge of the band may serve to prevent excessive rocking movement of the reflector.

A glass cover 1 is supported on an annular band or ring 8 and this ring is provided with an upper shoulder -or beaded portion 9 which rests on an inwardly-extending annular flange H! on the spherical band 2. A lower inwardly-extending flange l I on the ring 8 provides a shoulder on which the edge of the glass cover I may rest. In order-quickly to remove the glass cover, the cover-supporting band 8 may be tilted to the position shown in Fig. 2 so as to provide an opening between the cover-supporting ring 8 and the reflector-supporting band 2, through which the cover 1 may be removed or replaced. When the Fig. 3 is a sectional elevation of another embodiment having a sealed beam lamp or reflector bulb forming a part thereof, with the fixture cover is imposition, gravity is suflicient to hold the cover I and ring 8 in place. If desired, the inner surface of the supporting band 2 may have a spherical reflecting surface, the center of which may lie approximately at the light source so that rays reflected therefrom will be reflected back toward the light source and onto the concave reflector I.

The embodiment illustrated in Fig. 3 is adapted for flush mounting and comprises a plate or ring .l2 which may be secured to a ceiling l3 through which an opening M has been provided to allow the fixture to extend therethrough, whereby it may be completely installed from below the ceilin: line.

A spherical band or housing I! is provided which may be similar to the spherical band 2 previously described and is provided with an upper cover plate l6 secured thereto. A socket I1 is supported on this cover plate and an outlet box 18 may be provided, if desired, from which a flexible conduit l3 extends. A so-called refiector bulb 20, which may be of the so-called sealed beam type, is supported in the socket l1 and its outer end or lens portion 2! is exposed through an axial opening 22 in the spherical band Hi. The end of the bulb 20 may be substantially flush with the spherical surface.

The center of gravity of the assembled adjustable portion of the device is substantially on the vertical axis of the unit and the weight is so distributed that the center of gravity remains in a restricted region substantially on the vertical axis of the unit in all positions of adjustment.

- Therefore, the friction induced by gravity is sufflcient to hold the fixture in adjusted position.

Fig. 4 illustrates an embodiment adapted to be secured to a ceiling or other support and comprises an outer housing or false ceiling 23 which may be supported in any suitable manner as shown. The false ceiling 23 is provided with a circular opening 24 to receive a spherical housing or band la which may be similar to-the' spherical band l5 previously described. This band is also provided with an upper cover plate Ifia and socket 11a, in which is mounted the reflector bulb a in the same manner as previously described in connection with Fig. 3.

The spherical band I5 is provided with a plurality of radially spaced vertical rows of small projections 25 preferably formed by indenting the inside of the band to form a substantially vertical line of small outwardly extending cormgations. Such corrugations may be provided on any of the fixtures disclosed and are particularly intended for use in places where the ceilings or other supports are subjected to extreme vibration. These corrugations increase the frictional effect between the adjustable member and its support. I

Fig. 5 illustrates a nested arrangement of spherical elements which enables a more compact construction without reducing the range of adjustment and at the same time permits the mounting of the fixture in closer relationship to the ceiling than in the embodiment disclosed in Fig. 4. This embodiment comprises a housing or canopy 26' having an inturned annular flange 21 on which is supported a shallow spherical band 28 having an upper outturned flange 29 to limit the movement of the band by engagement with the inturned flange 21 of the housing. An inner spherical band 30 is nested in the band 28 and provided with an adjustmentdimiting flange 3| co-operating with an inturned flange 32 on the outer band 28. The inner band 30 is provided with a concave cover 3Ia adapted to support a socket 32- in which a reflector bulb 33 of the same type as previously described may be supported. The end of the bulb 33 is exposed through an axial opening 34 in the spherical band 30. In this construction the vertical depth of the fixture is materially reduced, and in all positions of adjustment the center of gravity of the adjustable portion is maintained in a restricted region adjacent the vertical axis as in the embodiments previously described.

This is a continuation in part of my copendilrggflapplication Serial No. 156,117, filed July 28, Further modifications will be apparent to those skilled in the art and it is desired, therefore. that the invention be limited only by the prior art and the scope of the appended claims. Having thus described my invention, what I claim and desire to secure by Letters Patent 1. A lighting fixture comprising a concave reflector, means for supporting a light source in said reflector, an annular band surrounding the reflector adjacent itsiperiphery and secured to said reflector, said band having a substantially spherical outer surface, a supporting member having an annular portion engaging said spherical surface for supporting said band and reflector for universal rocking movement whereby the light from the reflector may be adjusted angularly in any direction, the diameter of the outer edge of the reflector being greater than the diameter of the inner edge of the annular band, a glass cover, and a cover supporting band having an upper outwardly-extending annular flange detachably engaging said annular band and a lower inwardly-extending annular flange detachably engaged by said cover whereby the supporting band may be slipped and rocked to cause a portion of the supporting band to swing outwardly to provide an opening between the coversupporting band and the annular band for the insection and removal of the glass cover.

2. A ceiling lighting fixture construction comprising a unitary construction including a concave downwardly and outwardly flaring reflector, a light source within said reflector and movable therewith and an annular supporting band having a spherical surface and supported so as to move with said reflector, and a supporting member having a circular opening lying in a horizontal plane below the center of said spherical surface on the edge of which said spherical surface rests and tilts in any direction, said edge supporting the entire weight of said unitary con struction, the center of gravity of said fixture being close to the center of said spherical surface so that the friction due to gravity alone is sufficient to hold the fixture in adjusted position.

3. A ceiling lighting fixture construction comprising a unitary construction including a concave downwardly and outwardly flaring reflector, a light source within said reflector and movable therewith and an annular supporting band having a spherical surface and supported so as to move with said reflector, and a supporting member having a circular opening lying in a horizontal plane below the center of said spherical surface on the edge 'of which said spherical surface rests and tilts in any direction, said edge supporting the entire weight of said unitary construction, the center of gravity of said fixture being close to the center of said spherical surface so that the friction due to gravity alone is sufficient to hold the fixture in adjusted position, said annular supporting band being provided with an annular stop for engaging said supporting member to limit the tilting movement in any direction.

4. A ceiling lighting fixture construction comprising a unitary construction including a concave downwardly and outwardly flaring reflector, a light source within said reflector and movable therewith, a lens movable with the reflector extending across the reflector opening and cooperical surface on the edge of which said spherical surface rests and tilts in any direction, said edge supporting the entire weight of said unitary construction, the center of gravity of said fixture being close to the center of said spherical surface so that the friction due to gravity alone is sufllcient to hold the fixture in adjusted position.

5. A ceiling lighting fixture construction comprising a unitary construction including a concave downwardly and outwardly flaring reflector,

a light source within said reflector and movable therewith and an annular supporting band having a spherical surface and supported so as to move with said reflector, and a supporting member having a circular opening lying in a horizontal plane below the center of said spherical surface on the edge of which said spherical surface rests and tilts in any direction, said edge supporting the entire weight of said unitary construction, the center of gravity of said fixture being close to the center of said spherical surface so that the friction due to gravity alone is sufl'icient to hold the fixture in adjusted position, said supporting band having a meridional row of embossments for engagement with said edge to increase frictional resistance to displacement.

6. A ceiling lighting fixture construction comprising a unitary construction including a concave downwardly and outwardly flaring reflector, a light source within said reflector and movable therewith and an annular supporting band having a spherical surface and supported so as to move with said reflector, and a supporting member having a circular opening lying in a horizontal plane below the center of said spherical surface on the edge of which said spherical surface rests and tilts in any direction, said edge supporting the entire weight of said unitary construction, the center of gravity of said flxture being close to the center of said spherical surface so that the friction due to gravity alone is suflicient to hold the fixture in adjusted position, said supporting band having a plurality of spaced meridional rows of embossments for engagement with said edge to increase frictional resistance to displacement.

, WESLEY WILSON.