US2264951A - Lighting fixture - Google Patents

Description

Dec. 2, 1941. is NAY TH 2,264,951 LIGHTING FIXTURE Filed Nov. 4, 1939 2 Sheets-Sheet 1 mvsmon SHIRLEY R. NA YSM/TH ATTORNEY Dec. 2,1941. 5 NAY$M|TH 2,264,951

LIGHTING FIXTURE Filed Nov. 4; 1939 2 Sheets-Sheet 2 INVENTOR SH/RLEY R. NAYSM/TH I 77 I W ATTORNEY Patented Dec. 2, 1941 UNITED" STATES PATENT orrice LIGHTING FIXTURE Shirley R. Naysmith, Meriden, Conn, assignor to The Miller Company, Meriden, Conn, a corporation of Connecticut Application November 4, 1939, Serial No. 302,819

4 Claims.

The present invention relates tolighting fixtures, and is more particularly directed toward direct lighting fixtures having diffusingshades or globes about the light source.

The present invention contemplates lighting fixtures more particularly of the type employing an outer metal or porcelain enamelled reflector and an inner glass globe or shade which receives the light source.

According to the present invention the lighting fixtures employs a holder which may be readily secured to a canopy or other support, and this holder has arrangements whereby it can support the glass globe or shade by means of a bayonet joint construction, and other means for supporting the outer reflector.

The present invention also contemplates improvements in lighting fixtures according to which the neck of the glass shade or globe is provided with a non-removable metal collar which has suitable extrusions to form the lugs of the bayonet joint.

The accompanying drawings show, for purposes of illustrating the present invention, one embodiment in which the invention may take form, together with modifications of certain parts, it being understood that the drawings are illustrative of the invention rather than limiting the same.

In these drawings:

Figure 1 is a side elevational view of a lighting fixture with parts in section;

Figure 2 is a fragmentary perspective view with parts in section;

Figure 3 is another fragmentary perspective view illustrating the key slot of the bayonet joint;

Figure 4 is a top plan view of the holder with outer reflector and glass shade or globe, parts being broken away to show interior construction;

Figures 5, 6 and '7 are fragmentary sectional views through fixtures having modified forms of construction; and

Figure 7a is a fragmentary elevational view of the structure of Figure '7.

A suitable form of canopy is illustrated at 10. It may be secured to the outlet box in any convenient manner and may support a lamp socket H in any convenient manner. It is here shown as threaded at [2 to receive the upper threaded end l3 of a holder M. The holder has fine pitch threads, indicated at I5, to receive a locking ring [6 by which a metal reflector I! may be secured against a flat face 18 formed in the holder casting outside and below the threads l5.

The lower part IQ of the holder [4 is provided with key slots 20 indicated more clearly in Figure 3. The holder is provided with a plurality of downwardly extending rivets 2! having heads at 22 at the lower ends and receiving coiled springs 23 and a presser plate'24. This presser plate has a reflector forming portion 25 and is apertured, as indicated at 26, to receive a lamp bulb 21.

A glass shade or globe- 3D is provided with a cylindrical neck 3| and this neck receives a sheet metal collar 32 and gasket 32. This collarhas a bead portion 3-3 which is pressedin toward the glass so as to enter an annular indentation in the surface of the glass so that the collar cannot be removed from the glass. The collar is attached to the glass by applying a tool to the collar and deforming the material sufficiently to enter the indentations without actually bringing it against the glass so as to crack the glass. The collar 32 has extruded bosses 34 adapted to enter the key slots 20 of the holder so that the shade or globe can be supported from the holder. The collar also has inturned ears 35 which enter indented portions of the glass 36 so as to prevent rotation of the collar relative to the glass.

The shade can be readily inserted into the holder or moved from it by passing lugs or bosses 34 through the key slots and turning the globe in the appropriate direction. The presser plate holds the globe in place when it is inserted and prevents rattling.

In the construction shown in Figure 5, the peripheral portions of the holder are modified. It has a flange 5| to support the reflector 52 and a clamping ring 53 is used to secure the reflector in place. Here the metal collar 55 is shown as having a portion 56 bent outwardly under a lip 51 at the end of the neck 58 of the glass shade. The device of Figure 5 will operate the same as the device of Figures 1 to 4.

In the form of construction shown in Figure 6 the reflector 60 is secured to a stamping 6| and this stamping, together with arms 62 having openings 63, is secured to a holder 64 by screws such as indicated at 65. The opening 63 in the arm 62 is a key opening of the same configuration as the key slot 20 of Figure 3 and is adapted to receive a lug 66 carried on the shade supporting collar 61. The shade is pressed downwardly by a presser plate 68 under the influence of a coiled spring 69 interposed between the plate and the arms 62.

In the arrangement shown in Figures 7 and 7a the outer reflector 10 is clamped to a holder H by a locking ring indicated at 12. The periphery of the holder H is provided with notches, such as indicated at 13, and dwells, such as indicated at 14. These notches and dwells are adapted to receive bosses 15 formed interiorly on a collar 16. This collar is secured to the glass by an outwardly bent flange 11. A spring 18 and presser plate 19 act to hold the bosses T5 in the dwells '14.

It is obvious that the invention may be embodied in other forms and constructions within the scope of the claims and I wish it to be understood that the particular form shown is illustrative. Various modifications and changes being possible, I do not otherwise limit myself in any way with respect thereto.

What is claimed is:

1. In a lighting fixture, a glass shade having a cylindrical neck at least one side wall of which has a shoulder spaced from the end, asheet metal collar disposed about the neck and embracing the inner and outer faces of the glass, the collar being deformed about said shoulder to non-removably engage the glass, the glass having recesses to receive turned in ears formed out of the collar so that the collar is non-rotatably carried by the glass, the collar having bosses extending away from the g ass neck, a holder having bayonet slots to receive the bosses, and a spring actuated presser plate engaging the collar to hold the bosses seated in the bayonet slots.

2. In a lighting fixture, a glass shade having a cylindrical neck at least one side wall of which has a shoulder spaced from the end, a-sheet metal collar disposed about the neck and embracing the inner and outer faces of the glass, the collar being deformed about said shoulder to non-removably engage the glass, the glass having recesses to receive turned in ears formed out of the collar so that the collar is non-rotatably carried by the glass, the collar having outwardly extending bosses, a holder having a skirt portion provided with interiorly disposed bayonet slots to receive the bosses, and a spring actuated presser plate engaging the collar to hold the bosses seated in the bayonet slots.

3. A lighting fixture comprising a canopy, a downwardly opening lamp socket carried thereby,

a lamp in the socket, the canopy having a threaded skirt, a reflector holder threaded to the canopy, the reflector holder having a second threaded portion, a reflector receiving upper face and bayonet slots to receive a shade, a reflector resting on said face, a clamping ring threaded onto the holder and securing the reflector in place, a shade having lugs cooperable with the bayonet slots, and a spring actuated ,presser plate to hold the lugs in the slots.

4. A lighting fixture comprising a canopy, a

downwardly opening lamp socket carried thereby, a lamp in the socket, a reflector holder detachably secured to the canopy, the reflector holder having a threaded portion,.a reflector receiving upper face and bayonet slots to receive a shade, a reflector resting on said face, a clamping ring threaded onto the holder and securing the reflector in place, a shade having lugs cooperable with the bayonet slots, and a spring actuated presser plate to hold the lugs in the slots.

SHIRLEY R. NAYSMITH.

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