US1973661A - Indirect lighting lamp - Google Patents

Description

p 1934- J. R. SALISBURY ET AL INDIRECT LIGHTING LAMP 2 Sheets-Sheet Filed May 1'7, 193;

I ATTORNEY s R O T N E V m J'bhn H-Salisbur I071 12 1f, K748777674 WITNESSES Sept. 11, 1934. .1. R. SALISBURY ET AL INDIRECT LIGHTING LAMP Filed May 17, 1953 I 5 E K m m n 5 A ME w 1% y i l Y Z ITNESSES Patented Sept. 11, 1934 UNITED STATES, PATENT OFFICE s INDIRECT LIGHTING LAMP John R. Salisbury, South Orange, N. J., and

John H. Kremer, New York, N.

'ApplicationMay 17, 1933, Serial No. 671,576

3 Claims.

This invention relates to indirect lighting lamps, an object of the invention being to provide a lamp of this character which normally is totally indirect in its lighting but which is capable of being utilized as partially orwh'olly indirect or direct in lighting.

A further object is to provide a lamp of this character whose central single lamp constitutes a light source employed for indirect lighting, and is also utilized to softly, 'evenly'and fully illuminate a translucent shade located on the outside of an opaque reflector.

A further object is to provide, a lamp of this character in which the shade may begiven a desired light tint due to the color of a cylinder through which the light rays pass to the inner surface of the shade. e

A further object is to provide a lamp of this character in which the opaque reflector can be adjusted in height so as to efiiciently utilize bulbs or other wattages by positioning the lamp so that its light center is correctly located in the opaque reflector.

A further object is to provide a lamp of this character which guides a lamp into'its socket and makes the operation of changinglamps an easy one.

A further object is to provide a'lamp of this character which will be ornamental andattractive in appearance and which is capable of being utilized for many different purposes.

With these and other objects in view, the invention consists in certain novel features of construction and combinations and arrangements of parts, all of which will be more fully hereinafter described and pointed out in the claims.

In the accompanying drawings,

Figure 1 is a view mainly in elevation but showing a lamp in section;

Figure 2 is a view in horizontal section on the line 2--2 of Figure 1;

Figure 3 is an enlarged view mainly in longitudinal section illustrating the main portion of our improved lamp but omitting the shade.

1 represents a socket receiving shell which is preferably round in cross section and tapers towards its lower end, although, of course, the exact shape of the shell may be varied. The upper end of the shell 1 has an annular flare providing a horizontal flat portion 2 at the extremity of the open upper end of the shell. 3 represents a lamp socket secured in the shell and this lamp socket and shell may be secured to any suitable support. Ordinarily it will, of course, be secured to an ornamental base of some sort, but we will not attempt to illustrate any. particular base, but have merely shown a standard 4 which is connected with the bottom' of the lamp socket 3 clamping the shell 1 in place, and at the upper end of the standard a box 5 is provided for the accommodation of the wires 6 leading to differ ent portions of the lamp. This box may have a screw-threaded removable cover 7 or it may be made in any way to suit the trade.

0n the upper end of the shell 1 a guide 8 is secured. This guide '8 has several functions. First of all, it has a central downwardly projecting guide sleeve 9 which is positioned aroundthe upper end of the lamp socket 3 and serves to guide a lamp 10 when the latter is screwed into the socket. In other words, by reason of this guide it is easy to center the lamp in the socket and screw it in place. This guide 8 also functions as a reflector serving to 'refiectthe rays of light upwardly which may fall thereon. The guide 3 having a slot 11 therein for the reception of a screw-threaded Stud 12 on the inner member, and a wing nut 13 is screwed onto the'stud to clamp the post at any desired position of longitudinal adjustment. These posts have screw threaded studs 141 at their lower ends which are projected through the guide 8 and thefiared upper end 2 of the shell 1', 'and are clamped in place by ornamental nuts 15 screwed thereon. It is, of course; to be understood that the posts are sufficiently shouldered so that when the nuts are screwed home the posts will be rigidly held.

The upper ends of the posts 10 are internally screw-threaded. Screws 14 are projected through lock-washers 1'7 on the reflector 16 and project through the reflector into the threaded ends of the posts 10. Between the reflector 16 and the guide 8 a translucent cylinder 18 is located. This cylinder 18 may be'of mica, glass or any other suitable material, and is preferably colored so that light rays passing therethrough will illuminate and tint a shade 19 when said shade is supported on the reflector 16, as clearly "shown in Figure 1 of the drawings. This cylinder 18 is located against the inner faces of the posts 10 and is held by the posts against lateral displacement. Particular attention is called to the shape of the opaque reflector 16. This reflector has an annular shoulder 19' perforated to receive the studs 14 on the upper ends of the posts, and this shoulder rests on the posts. The lower ex- (ill tremity of the reflector comprises an extension 20 which is curved downwardly and inwardly inside of the cylinder 18, and has a central opening 21 through which the lamp 10' is projected. This extension 20 virtually serves to insure a complete or entirely indirect lighting, as it will be seen that practically no rays of light will be deflected downwardly. There will, of course, be some light reflected laterally to illuminate the shade through the cylinder to relieve the latter of a dead appearance, but for all practical purposes the entire lighting will be indirect.

In order to transform the lamp-from indirect lighting to direct lighting or utilize both direct and indirect, a series of lamp brackets 22 extend,

from the box 5 and support lamp sockets 23 and lamps 24 preferably of that type known as candle fixtures because they have somewhat the appearance of a candle. These lamps 24, as will be. seen in Figure 1 of the drawings, are within the confines of the shade 19 and when they are illuminated the light rays therefrom are reflected laterally from the outside of the reflector 16 to and through the lamp shade. When these lamps are extinguished and the single lamp 10""i'srelied upon then the illumination is entirely indirect. It is, of course, necessary to provide a lamp of this characterfwith' separate controls for the lamp, 10 and the lamps 24. A pull cord 25 is illustrated as a control for the lamp socket 3, and it is understood that any suitable control may be provided with the lamp sockets 23.

Attention is also called to the fact that the flat portion of the guide 8 deflects upwardly rays of light which may strike the same, thus preventing any possibility of the light rays being thrown on the floor, and hence whenthe single lamp 10 is used the light is thrown almost in its entirety upward toward the ceiling and only a slight illumination is had of the cylinder 18 to tint, and slightly illuminate the lampshade.

An extremely important feature of the invention is the provision of the adjustable posts 10 which permit the reflector 16 to be adjusted in height so as to properly position the light center of the lamp in the reflectorregardless of the size and wattage of the lamp.

While we have illustrated what we believe to be-the preferred embodiment of our invention, it is to be understood that various slight changes may be made with regard to the form and arlamp into the socket of the shell and constituting a reflecting surface to reflect the light rays upwardly, telescoping posts secured to the shell and extending upwardly therefrom, an opaque reflector having an angular shoulder adjacent its lower end, said shoulder resting upon and secured to the upper ends of said posts and means for securing the posts at various longitudinal adjustments to regulate the height of the reflector in accordance with the size and wattage of the lamp employed. I

2. An indirect lighting lamp including a socket shell,telescoping posts securedto the shell and extending upwardly therefrom, an opaque reflector having an angular shoulder adjacent its lower end, said shoulder resting upon and secured to the upper ends of said posts, means for securing the posts at various longitudinal adjustments to regulate the height of the reflector in accordance with'the size and wattage of the lamp employed, and a translucent cylinder located between the shell and shoulder of the reflector and positioned inside of the series of posts.

3. A11 indirect'lighting lamp including a socket shell, telescoping posts secured to the shell and extending upwardly therefrom, an opaque reflector having an angular shoulder adjacent its lower end, said shoulder resting upon and secured to the upper ends of said posts, means for securing the posts atvarious longitudinal adjustments to regulate the height of the reflector in accordance with the size and wattage of the lamp employed, and a translucent cylinder located between the shell and shoulder of the reflector and positioned I inside of the series of posts, a guide plate secured to the top of the shell having a central guide sleeve to guide the lamp into the socket of the shell and constituting a reflecting surface to reflect light rays upwardly.

JOHN R. SALISBURY. JOHN H. KREMER.

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