US1429067A

US1429067A - Nonglaring device for lamps

Info

Publication number: US1429067A
Application number: US202119A
Authority: US
Inventors: Frederick J Dole
Original assignee: Individual
Current assignee: Individual
Priority date: 1917-11-15
Filing date: 1917-11-15
Publication date: 1922-09-12
Anticipated expiration: 1939-09-12

Description

F. J. DOLE.

NONGLARING DEVICE FOR LAMPS.

APPLICATION FILED NOV 15. 1917.

2 SHEETS-SHEET 1.

Patentedsept. 12,1922.

F. L- DOLE.

NONGLARING DEVICE FOR LAMPS- APPLICATION FILED NOV. 15, I917.

1,429,067. Q PatentedSept.12,19Z2.

2 SHEETS-SHEET 2.

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Application ma lloveinber 1:, 1m. Ierlallo. 202,119.

To all whom it may concern:

Be it known that I, FREDERICK J. Donn, a' citizen of the United States residmg in New Yorkin the county of New York and State ofv ew York, have invented certain new and useful Improvements in Nonglar: ing Devices for Lamps, of whi h the following is a specification.

This 'invention' relates to an improved lamp-shade particularly adapted for use 1n automobile head or search-hghts, to intercept and direct the light rays, in such manner that while illuminating the madtion of the shade showing three (3) 0 a circular surface close to the vehicle there will be no transmission of glaring rays, liable to dazzle or bewilder other drivers or persons approac which shade is of checzgvcost and high e ciency, and may be qui y and easily cut to proper size to fit lamps of widely variant diameters of aperture.

' My said improved non-glaring lamp-shade is shown described andclaime in the -following specification of which the gaccompanying drawing forms a part, wherein similar letters or numerals of reference,

designate like or uivalentaparts, wherever foliliimll1 throughout t e sever views, and in w c Figure 1 is a front view in'pers ctive'of m improved lamp-shade; and 2, is a si e-view thereof looking toward the left .of Fig. 1. Figure 3 is a side view in vertical section on an enlarged scale of a 01:-

t e louvers; and F 4 and 5 are central-vertical sectional views show two forms of my invention each provide with aparabolic .mirror containing a lamp, having my improved shade in position thereon; the various kinds ofra s transmitted being indicated i by the different forms of the several ray indicating lines.

My Improved lamp-shade is usually and preferably formed of pressed glass, but

other transparent material may be used with equal effect.

im roved lamp shade comprises A, having the outer plain circumferential securing-ring portiolne 11,

My said to proper size to fit various'size'so lamps.

' Formed on what is to be the face or outer or front side of the shade-disk A, are a v rismatic louvers 12, usually 56 and preferaby arranged horizontally as plurality of shown, the twofaces of whichare usually and preferably at an angle of :ninet de- (90) one to the other;.,,-the ower aces 13, being inclined outwardly and the u p21- faces 14 inwardly upward, the base 0 t e to the orizontal line of the louvers.

For the sake of cheapness of construction my im roved form of lamp-shade is usually forme' of glass-pressed into form in asuitable mold; and while the rear face may be ,Eane surfaced as shown in Fig. 4 and in 11 lines in Fig. 3, the louverrisms may be longitudinal y p p the back, as indicated in Fig. 5 and by the ri ht-angled dotted-lines at 15 of Fig. 3.

triangularly [allowed at risms of the louvers being inclined any event and of whatever forinmf construction, while the main-body portion of the shade is formed of;

parent glass, the upwardly inwardly inclined faces 14 of each of the louvers 12,-

are dimmed so as to prevent transmission of glarin light-rays to a distance, while the mwar and downwardly inclined surfaces 13 0 such louvers are, left transarent to allow of the transmission of right' diver nt ound re s downward upon the roa way immediate y;in front of the machine, as mdicatedby the full lines in Figs. 4 and 5 the dimmed glow rays being therein in 'cated b the short or round dotted-lines; and t e parallel un'- dimmed distance re s being shown by the dash or elongated otted-lmes.

The outer annular plane surfaced peripheral securing-ring 11, like the faces 14 of the louvers is 'dimmed. in any suitable manner among which may be covering the same with white or other enamel .ortranslucent glass of yellow or other color, in or in the sec 4 lf desirecl the head-light as in pling' highly transground.

Fig i 4 may be tilted slightly forward to hold the I claim: I

1. A non-glaring device comprising a plu rality of horizontal louvres arranged one above the other and each provided with an outwardly and downwardly incl-fined dimmed upper face, and an upwardly and outwardly inclined freely transparent lower face disposed at an angle of aboutfiO degrees to the plane of the device.

2. A non-glaring device comprising. a plurality of horizontal louvres arranged one above the other and each providedwith an outwardly and downwardl' inclined dimmed upper face, and an upwar ly and outwardly inclined freely transparent lower face disposed at an angle of about 60 degrees to the plane of the device, whereby said lower face permits the egress of substantially undimmed horizontal distance rays, and the egrees of substantially undimmed ground downwardly and forwardly directed rays.

3. A non-glaring device comprising a' plurality of horizontal louvres arranged one above the other and each provided with an outwardly and downwardl inclined dimmed upper face, and an upwar ly and outwardly inclined freely transparent lower face disposed at an angle of about 60 degrees to the istance rays parallel with the.

said lower face is wide.

a. A non-glaring device comprising a plnrality of horizontal prismatic louvres ar ranged adjacent one above the other and each 'rovided with an outwardly and downward y inclined dimmed upper face disposed at an angle 'otahout degrees to the plane of said device, and an upwardly and outwardly inclined freely transparent lower face joining the adjacent upper faces at approximately right angles and disposed at an angle of about 60 degrees to said plane, whereby said lower face permits'the egress of substantially undimmed light rays in forward beams of a vertical thickness as reat as'half the width of said lower face, an r the egress of-suhstantially undimmed rays directed downwardly and forwardly in heams as thick as said-lower face is wide.

rnnnnnrcn a. Donn Witnesses:

Gnonen J. lBian'rnns, H. 1'. Smart.