US1776481A

US1776481A - Lamp

Info

Publication number: US1776481A
Application number: US338316A
Authority: US
Inventors: Smart Willard Rossiter
Original assignee: Individual
Current assignee: Individual
Priority date: 1929-02-07
Filing date: 1929-02-07
Publication date: 1930-09-23
Anticipated expiration: 1947-09-23

Description

Sept. 23, 1930. w. R. SI'VIART 2 Sheets-Sheet l Filed Feb. 7, 1929 awe/whom anew/"eg Sept. 23,1930. w, R SMART 1,776,481

LAMP

Filed Feb. 7, 1929 2 Sheets-Sheet 2 7 s mple .and efficient tion with an ordinary incandescent bulb lamp.

Patented Sept. 23, 1930 WILLARD aossrrna smear, or L08 enemas, cumoama Lmr.

Application filed February 7, 1929. Serial no. team.

This invention relates to lamps for illuminating without producin an objectionable glare, one of the objects being toprovide a shade for use in connecwhereb it becomes im ossible for the direct lig 1t rays or the brlght reflection thereof to be seenjby anyone adjacent to the Another object is to provide a lamp which can be used as ture being such as to afford convenient access at all times to the bulb contained in the housin or shade of the lamp. ith the foregoing and, other objects in view which will appear. as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed may be made within the scope of what is claimed without departing rom the spirit of the invention.

In the accompanying. drawings the preferred forms of the invention have been shown.

In said drawings,

Figure 1 1s a vertical section through one form of lamp embodying the present improvement.

.Figure 2 is a bottom plan view thereof. Figure 3 is a section on line 3-3, Figure 2, the bulb of the lamp being shown in elevation.

Figure 4 is a transverse section through a lamp of. that t pe adapted to be suspended. Figure 5 is a ottom plan view thereof.

. Figure 6 is a section t of lampladapted to be supported by-a pedestal or the Figure 7 is a bottom plan view of the housin or shade of the lamp shown in'Figure 6.

the figures by characters of,

eferring to reference, 1 designates the upper housing or 1 reflector which I can be of any desired crosssectional contour. This housing or reflector can be finished with an mner mat surface preferably white which will reflect light rays abed lamp, desk lamp, or. for other illuminating purposes, the

struc

1 and 3 and is so rough another form.

without producin glare. A socket 2 is mounted at a suita le point within the housing 1 and serves to hold a lamp bulb 3. Arranged beneath this bulb is a lower reflector 4 preferably concavo-convex. This reflector can be held in position by means of oppositely extending

wires

5 and 6. The wire 5 can be hingedly connected to the marginal portion of the reflector housing 1, while the wire 6 can be formed with a book 7 adapted to snap into engagement with the marginal portion of the housing reflector, thereby to hold the reflector 4 in position. Obviously by forcing the hook 7 out of engagement'with the housing reflector the lower reflector 4 can be swung downwardly away from the bulb 3 so as to afford convenient access thereto.

The reflector 4 embraces the lower rtion of the bulb as shown particularly in igul'es proportioned relative to the said bulb and the edge of the housing 1 that it is impossible for light rays to issue directly from .the filament F of the bulb along lines extendin between the edges of the two reflectors. l y referring to Figures 1 and 3 it will be seen that straight lines extending from the lower edge of the housing 1 'to the upper edge of the reflector 4 will ass above the filament F. Thus all direct light rays from the filament will be intercepted by some ortion of .the reflector 4 or the ousmg 1. The upper or inner surface of the reflector 4 can be silvered if desired but the inner or lower surface of the housing l is provided with a'dull or mat finish referabl white. Thus light rays from the lament rays extending directly from the filament will come against the mat surface of the housing 1 andbe dissipated therefrom outwardly between the housing and the reflector. As a result of this arran ement' ofparts none of the direct rays of i ht will issue from the housin Instead al of the rays dissipated there om will be reflected 1 from the mat surface of'the housing and,

consequently, while producing a strong indirect illumination,'will be free from all glare.

In the structure shown in Figures 4 and 5 there is provided a reflector or housing 8 in which is suspended the bulb 9. A lower concavo-convex reflector 10 is located beneath the bulb and is connected to the horas-v ing 8 by afin er 11 hingedly attached to the housing and y a snap hook 12 adapted to detachably' engage the margin of the housing 8. These parts are so proportioned that, when the reflector 8 is in position, it is impossible for 1i ht rays to pass directl from the filament outwardly between the two reflectors. Instead all of the light rays origi natin at the filament must either be reflecte by the inner surface of the housing 8 downwardly through the space between the housing and the reflector 10 or else must be reflected from the inner surface of the reflector 10 upwardly against the inner surface of the housing 8 and thence outwardly through the annular space surroundin the *reflector 10. The inner surface of re ector in an open face the being 10, can be silvered but the inner or lower surface of the housin 8 must be provided with a dull or mat finis flected therefrom without glare.

Another modification of this structure embodied in a floor lamp or the like has been indicated in Figures 6 and 7. In this form of device the standard 13 has a lower re- 1 flector 14 extending upwardly therefrom and around the bulb 15. A concavo-convex housing 16 is supportedover the bulb 15 and the reflector 14 and may be .movably attached thereto by means of

fingers

17 and 18. The

portion of the housing, outer end'of the other member for friction-' ally engaging the edge of the housing thereby to support-t fleeting surface exposed to the lamp and cooperating with t e housing to intercept light rays originating in the lamp, that portion of the reflector adjacent to the lamp being surrounded by, but spaced from, the housing, members radiating from the reflector below that edge thereof nearest'the lamp, means at the outertend of one of the members for pivotally engaging the edge and means at the e reflector removably 1n operative pos tion.

'In testimony that I claim the foregoing as my own, I have hereto aflixed my signa- I ture.

WILLARD ROSSITER SMART;

so that light will be rc- I finger 17 is hingedly. connected to the mar- 'nal portion" of the housing 16 while the ngers 18 have hooks 19 adapted to snap into engagement with the margin of the housing. These parts likewiseare so located and pro- Iplortioned that light rays originating at the v lament F in the bulb cannot pass directly from the lamp. Instead rays directed downwardly will be reflected b the inner surface of the reflector 14 upwar ly a ainst the mat surface of the housing'16. ight rays'directed upwardly from the filament will come. the housing and against this mat surface of g be deflected downwardly without, however, producing a glare. In Figures 4 and 6 broken lines have been used to indicate that the filament is at all times positioned where light rays originating therefrom cannot pass di rectly between the housing and the reflector The mat surface of each of the housings can be produced by coating the inner surface of the housing with white painter the like or by frosting said surface.

What is claimed is: v v The combination with a lamp housing haventire inner surface matted and a lamp supported in the