US821309A

US821309A - Decorated shade-reflector.

Info

Publication number: US821309A
Application number: US23896604A
Authority: US
Inventors: Otis A Mygatt
Original assignee: Individual
Current assignee: Individual
Priority date: 1904-12-30
Filing date: 1904-12-30
Publication date: 1906-05-22
Anticipated expiration: 1923-05-22

Description

'No. 821.309. PATENTED MAY 22; 1906.

O. A. MYGATT. DEGORATED SHADE REFLECTOR.

APPLICATION FILED 1330.30. 1904.

Fl ii SW01 i ll. lilo Elpecification of Letters lc'atel t.

as-tented May ZEGG.

Application filed December 30,1904. fierlal No. 238,966-

. ivlrcii'r'r, a citi residing at New W Yor Lilfl State r I ive shades composed r gc proyor'tiou iii light and \iug lilrc vriuciples, ri-ncl hig.

ol stil. another moduiczzl, Big. 6' is a, similar view of it moriilicrl slur-dctu r t alight-my from th c surface of' a sh largelygrcilcctcd in t if the pleura sheet of :clinrttion list the light my do it; not "ass through the glass the my is refracted "o glass from its direction of out W :nd i

.5 re ic :tccl at the second sur- 4 face. fact angle of reflection t the second surface.

thc plaice: sur- The rays R it 3 of the glass wili in ci Tho face ol the glass to any consiilcrchlc cxtcnt, oxc ot for about fifteen i, L ilcgrccs between the liucs (z a and the face A;

"is, will. rcilcct lightrcys arch such surface at forty-five de- 5 'lhc 'l'scc ll, hovzilmost complctcly which re by the liucs l: l5-42lutt i grrces to tlm clans oi face in show tlic cours of 2 li ll which rcilcctsrl by a. prism, t

being the active rcliccting-facc, Whilc tho other faces are substantially inert to tho my on 1 in 3 the light-ray all is show". ficctcrl downward, While the my 45 directly through the prisnr by each surimzc. I

I have found in n cticc that co of (lust on outside of :t plate or docs nct intcrfcrc with its reflecting qualities to gl'itraiys 'flioiu Within. Thus he pliitc A i will auswor-as Well for a rcilcctor in Lil 'i' 'icatcd (lirec m f the 51cc ll be, civcrcri r0 (lust; but .1] rim A is obscures;

he ahso icd and lost. the su transparent Tho uppcr portion from 1 to 2 is smooth externally, and therefore not much liable to accumulate dust. The interior surface of the same portion is decorated with internal prisms or flutings, and. as these are nearly vertical they do not accumulate dust to a great extent. The umjority of the light-rays pass through, this part of tho shadorcllector, hutzu'c soi'tcncrl and (lilluscil by the timings. That part of the device from 2 to 3 externally covcrcd with rem ilcctiug-prisms arranged Vcrticully or rz-uliall This surface will gather (lust, but will still he cllioicnt as a reflector, the lightrcys' being; reflected by the prisn'is, as in 4. This inside of the reflector from i? to 3-is smooth, and hence not liable to (lust col .lcctionl In Fig. 7 that part of charlc-rcllactor from 4 to 5 is externally smooth. and m or diiiuse the light, while the outside from to 6 covered with rei'lccting prisms arranged spirally, the inside being smooth. The reflecting-prisms are not (uite as ellicient; but the general principles involved are the same in both cases. That part of the device used as a shade is the pa rt which receives the least intense rays from an incandescent lamp and would therefore be least eificicnt as a reflector. Theshade part serves to illuminate the outside of the reflector and the space surrounding; but the rays which through the shade portion of the device are not guided by external prisms, while the rays do not pass to any considerable extent through the reflector portion, but reflected by the external prisms.

Fig. 5 illustrates the same principle somewhat modified. That part of the shade-reflector from 7 to 8 is externally. smooth. and passes light-rays from within. of this shade part of the device is decorated with spiral flutings 9 and beads 10; but these are merely exemplary, as any other variety of decorative forms ma be employed and colors may be used ju iciously The decorative forms employed of course divert or change the direction oi. some of the light-rays, so that certain. fields of illun1ination receive more and others less light-rays than if these d eeorative forms were omitted.

The part of the device from 8 to 12is internally smooth and externally covered with 5 circumferential reflecting-prisms 18, which The interior while less etficient than radial prisms can be made tolerably eflicient as reflectors.

The shade-reflectors of the present invention are formed from glass by pressure in molds. The work of decoration may be in part supplementary to the molding.

What I claim is- 1. A shade-reflector composed of'a single piece of glass having a contracted neck which is internally provided with light-diverting bodies and is outwardly smooth, and

'a flared mouth portion having external reflecting-prisms arranged with their axes extending in a generally radial direction, the interior of this reflecting portion of the device being smooth, whereby the deterioration of the different arts of the device by the accumulation o' dust is largely prevented.

2. A bell-mouthed reflector divided into two zones, the upper zone, through which the light passes out, having lightdispersing bodies on the inside and a smooth outer surface from which dust can be readily removed; the lower zone from which the light is reflected back and out of the mouth. having light-reflecting bodies on the outside and being smooth inside.

In testimonywhereof I afiix my signature in presence of two witnesses.

one A. MY ATT.

Witnesses:

H. E. NASON, C. MoCANN.