US1989440A - Light shade - Google Patents

Description

Jan. 29, 1935. P, cE s 1,989,449

LIGHT SHADE Filed MaICh 11, 1953 INVENTOR PM W flag em ATTORNEY Patented Jan. 29, 1935 UNITED STATES PAT Eur OFFIC LIGHT SHADE f Paul Ceasar, Brooklyn,- N. Y., assignor of onethird to Maurice Finkelstein and one-third to Samuel Seligman, both of New- York, N. Y.

Application March 11, 1933, SerialNo. 660,370 4 Claims. (01. 240--105) The present improvements relate in general to lamp shadesand reflectors, and more particularly to reflectors; having improved details of construction adapted for use withincandescent bulbs.

A primary object of the invention is to provide new and useful. improvements in reflectors which. are light and durable, and may be economically manufactured. A. further object is to provide a reflector which may be stamped and L9 produced from a blank in one operation.

Another object is to provide animproved one-.

piece shade or reflector which be; readily and easily mounted in operative position. A still further object is to. provide a reflector having an integral collar for locating the device in proper position when mounted, andat the same time provide for air circulation about the bulb.

Other: objects include the provision of novel means for automatically adjusting and centering the. lamp with respect to the shade or; reflector. Further objects will be: apparent tov those skilled in the art, upon reference to. the accompanying specification. and drawing, inwhich:

Fig. 1 is. aside elevation of one form of the present improvements associated with a lamp s c t;

Fig. 2 is a plan view of the blank from which the reflector is provided;

Fig. 3 is a section on line 3-3 of Fig. 1;

Fig. 4 is a vertical section of the reflector, with the lamp and socket illustrated in dot and dash lines;

Fig. 5 is a side elevation of the underside of the shade associated with a bulb.

Referring to the drawing, the completed shade or reflector 5 is illustrated in Fig. 1 in association with the socket 6 and lamp or bulb 7.

The shade 5 is preferably made from sheet metal having a lustre so that the device may serve both as a shield and as a reflector. In the preferred method of manufacture blanks 5, such as illustrated in Fig. 2, are stamped from the sheet metal. They may be of any size suitable for the particular bulb with which they are to be used. 45 As the next step in the formation of the improved shade, the flange 8 is folded back in a direction toward the body of the blank. This fold-' ing operation is performed on the blank while it is flat, so that the subsequent bending operation 50 may be imposed on the blank when folded.

The blank with the flange 8 folded thereunder, is now bent about a matrix or die, with the flange on the inside. The die and folding operation is such that the shade or reflector is open at both ends. The outline of the blank is such that when.

the blank is. bent along its longitudinalaxis, the end of the blank having. the flange 8 provides a relatively narrow neck portion which. is defined by collar 8.

The body of the shade 5, as illustrated, flares outwardly from its union with the collar to its outer extremity which is preferablydesigned to extend to or beyond, the tip of they bulb 7. This flared outer end of the shade facilitatesinsertion and removal of the'bulb and permits illumination 1 in that direction.

Upon reference to Fig. 5, it. is, seen that the shape of the blank, and the folding operation imposed upon it, causes the completed shade 5 to have a side opening 10 which. increases in size from the region of the collar 8.. The walls 11 definingthis opening, partly encompass the bulb, but recede as the outer end of the shade is approached, so that the greater portion of the rounded end of the bulb is not shielded on that side which has the opening 10. When'associated with, the bulb therefore, the illumination is downwardly and outwardly, although the; walls: 11 serve as. shades at the sides and bottom...

At any convenient stage in the course of manufacture, but preferably after flange 8 has been folded over, the ends of the blank may be bent to provide ears 12, whereupon they may be suitably punched for accommodating the screw 13 and wing nut 14. 30

In assembling the shade about the socket and lamp, the screw 13 is removed, and the shade, being resilient, may be sprung about the shank of the socket, whereupon the screw may be put through ears l2 and the wing nut 14 tightened. The completed shade, ready for use, has openings at the side and ends substantially as shown in Figs. 3 and 5, so that it is necessary to force the walls apart, as the shade is snapped over the socket. However, the shade resists this movement 40 and springs back to original position. If a bulb is not in place in the socket, the shade may be applied and removed longitudinally of the socket.

As illustrated, the collar 8 supplemented by the main body of the shade exerts a spring grip on the shank of the socket, whereupon it is held in position with the aid of the screw. This spring grip tends to resist removal of the shade, thereby serving to hold the same in position.

The relation of collar 8 to the socket and lamp is such that the shade 5 is maintained in spaced relation with respect to the bulb 7 on all sides thereof. This is apparent upon inspection of the drawing, wherein collar 8 makes a snug fit with the socket, and the axis of the collar, if produced,

ears 12, have the same curvature as the main por- This provision insures the v tion of the collar. I I proper spacing of the portions 11 from the bulb, in the same manner as the remainder ofthe shade.-

By providing the collar 8 integral with and] closely associated with the shade or reflector, the device readily adjusts itself in proper position about the socket 6. Furthermore, the improved collar and manner of associating same with the shade, permits the collar to center the bulb with respect to' the shade, as previously pointed out.

Inproviding an enlarged open end-in the reflector or shade5,'increased diffusion of light is afforded and at the same time, the bulb may be replaced with ease. Likewise, bulbs of varied sizes may be employed, since the enlarged end presents no limitation on the length of the bulb.

The present improvements may be very economically manufactured in quantities by simply stamping out the blank, folding and then bending same. This is accomplished by few operations at a minimum expenditure of labor. Accordingly, a light, strong and durable shade may be inexpen sively made which will be accurate in contour, and suitable, without modification, for immediate use with'a bulb and socket. i

A" further marked advantage of the present improvementsresides in the fact that neither the surface nor the texture of the metal blank is impaired. This is due'to the fact that it is unnecessary to stretch the metal which frequently breaks, mars or scratches in" methods requiring stretching,- thereby impairing the lustre and surface.

Such undesirable results are eliminated in the shade ofthe present improvements; It is significant that'the'body 5 of'the shade extends about the greater portion of the socket 6, so that the perforations in the body may be aligned for accommodating the rigid securing means which describes a chord across the circular end of the shade. In the illustrated embodiment, the, screw 13 extends through opposite sides of the shade and through opposite ends of the collar 8. However, it -,is manifest -that said screw or othersecuring means may seize and hold only the sides of the shade and not the ends of the collar,

orthe arrangement may be the converse.

Yarious modifications Within the scope of the present improvements may occur to those skilled in -th e,art, without departing from the purview of thei'rivention."

1. A lamp shade for incandescent bulbs formed from sheet'metal' comprising a blank having a narrows trip at one transverse end folded back substantially upon the body of the blank, said blank thereupon being bent along its longitudinal axis to provide a tubular shade of varying cross section from one endj-to the other, and a securing member fo'r' holding the blank in operative position about a lamp.

'2. A sheet metal blank comprising'a body portion defininga tubular shade which is relatively narrow at one end'andflaring in increasing cross section to the other and larger open end, a collar portion integral with said body portion, said collar portion being foldedwithin said tubular body portion and'defining a substantially circular band from which said tubular body portion is spaced.

3. A' lampshade for incandescent bulbs comprising a shade portion and an integral collar for aligning the bulb, means defining perforations in opposed portions of said shade portion and a member extending therethrough for securing the shade inposition; 4; A lamp shade for incandescent bulbs comprising a shade portion and an integral collar for aligning'th'e'bulb, means defining perforations in opposed portions 'of'said shade portion and collar, and securing mean'sfexten'ding through said shade and collar.

PAUL CEASAR.

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