US 1469946 A
Description (OCR text may contain errors)
Patented 9, 1923. ,l Y p UNITEDd STATES I inseam` PATENT oir-Fica .roms A. MORRISON, or sromNE, wasnmefron'.
Application'- led January 24, 1923. Serial No. 614,657.
To all whom t may concern:
Be it known thati -I, JOHN A. YMounisoN, a citizen of the United States, residing at S okane, inwthe county of Spokaneand tate of Washington, have 1nvented certain new and useful improvements in Exit Lights, of which the following is a specification, reference being had to the accompanying drawings.
This invention relates to improvements in exit 1i hts, and an important object of the inventlon is to provide in an exit light means prlventing accidental extinguishing of .the li t.
gA 'further object of the invention is to provide an 'exit light having main and auxiliary lighting elements, the main lighting element being normally operative and the auX- iliary li hting element becoming operative upon fai ure of the main lighting element.
A still further object of the invention is to provide a device of this character having means not only whereby the exit may be indicated but means whereby the exit intimes of necessity, such as upon failure of the illuminating elements of the buildin of -which the exit forms a part, the exit signal is not only illuminated but likewise provides illumination for the exit proper.
An additional object of the invention is to provide-devices of this character in selfcontained units and which may be readily installed to replace the ordinaryexit lights now in use. 36
These and other objects attain by the construction and arrangement shown in the accompanying drawings wherein for the purpose of illustration is shown a preferred embodiment Aof my invention and wherein like reference characters designate like parts throughout.
In the drawings y Figure 1 is a front elevation of an exit light'constructed in accordance with my invention;
Figure 2 is a vertical sectional view takenv therethrough Figure 3 is a view showing the same in position at an exit and indicating 1n dotted lines a remote position for the control switch; and
Figure 4 is a detail sectional view taken through the switch.
Referring now `more 4partlcularly to the drawings, .the numeral' 10 designatesa casing of any desired conformatlon havlng a lens 11 vin one'wall thereof preferably co1- ored red after the usual customfollowed -with such signals, andv rovided .u on its face with the word Exit or other i entifying characters 12.y The casin 10 is provided in that wall thereof ada te to be directed towardythe exit with W ich the signal is used,. with an o ening having arranged therein a lens 13 acked by a reflector 14 arranged within the casin and having an illuminating element 15 t erein. The inner face of the reflector, or that face thereof facing the interior of the casing 10, preferably forms a mounting for a second llluminating element 16, although this illuminating element may be otherwise disposed if so desired. The casing has further mounted thereina third illuminating element 17, a solenoid coil 18 and a battery 19 and is provided upon its exterior with a switch 20, the purpose of which will resently a pear.
The solenoid coil 18f1s provide with an armature bar 21 which when not acted upon by the coil, acts as a switch point connecting a pair of spaced contacts 22. The switch 2O embodies pairs of contact members 23 and 24. @ne contact of the pair 23 is electrically connected with one of the contacts 22 and the other of these contacts is connected through the illuminatingelements 15 and 16 with one terminal of the battery 19. The other terminal of this battery is connected with the second contact ofthe pair 23: One contact of the pair 24C is electrically connected with one side of the illuminating circuit 25 of the building in 4which the exit lamp is.
to be employed. The other contact thereof is electrically connected through the winding of the solenoid 18 with one terminal of the illuminating element 17, the other terminal of this element being connected with the opposite side of the illuminating circuit 25. The battery 19 may be of any desired type, either storage or dry type, and is preferably accessible for repair, recharging or, replaceminating elements 15 and 16 is completed gli through the switch 20 but being broken by the withdrawal of the armature: 21, these elements do not become active. '.lif, how:- ever, the illuminating circuit 25 fail for any e reason, as for blowing of the fuse plugs of ne 22 and causin the circuit (notjherein shown) orA failure of the source of current, the solenoid 18 being.
de'energized, the armature thereof fails, completing the circuit through the contacts illumination of the elements and 16. y this illumination, the exit' proper, designated at E, is illuminated and the exit'signal as represented by the red lights 11 and the wording or indicia 12 cari@ ried thereby is likewise illuminated. Particular attention is directed to the fact that the switch is employed for controlling both circuits simultaneously. rl`his is necessary due to the fact that if the circuit 25 2@ were separately controlled as regards the 53@ ted lines in the diagrammatic figures and as is likewise suggested by dotted lines in these figures, the illuminating elements 15 and 16 `instead of being arranged in parallel may be arranged in series and differently positioned within the casing. Such changes being readily possible, lf do not limit myself to thespecific structure hereinbefore set forth except as hereinafter claimed.
l claim i 1. ln an exit light, a casing adapted to be attached to a wall adjacent an exit and having an identifying lens in one wall thereof, a lens positioned in that wall of the casing next adjacent the exit, an illuminating element within the casing for illuminating the last named lens, means for directing the rays Aof the illuminating element through the last named lens, main and auxiliary elements within the casing for illuminating the first named lens, said main illuminating element being normally active and the first named and auxiliary illuminating elements being normally inactive, and means operated by failure of the main illuminating element for rendering active said rst named and auxiliary illuminating elements.
acetate 2. lln an exit light, a casing adapted to be attached to a wall adjacent an exit and having an identifying lens. in one wall thereof, a lens positioned inv that wall of the casing next adjacent the exit, an illuminating element within thecasingfor illuminating the last-named lens, means for directing the rays of the illuminating element through the last named lens, main and auxiliary elements Within the 4casing for illuminating the first named lens, said main illuminating a lens positioned in that wall ofthe casing next adjacent the exit, an illuminating .element within the casing for illuminating the Ylast named lens, means for directing the rays of the illuminating element through the last named lens, main and auxiliary elements within the casing for illuminating the first named lens, said main illuminating element being normally active and the first named and auxiliary illuminating elements` being normally inactive', means operated bj failure of the main illuminating-element for rendering active lsaidfirst named and auxiliary illuminating elements, including a circuit for the main illuminating element, an open circuit for the first named and auxi'liary illuminating elements, means operating upon failure of the first named circuit forclosing the second named circuit, and manually operable means for simultaneously opening both of said circuits.
4f. ln combination, an indicator for an 0bjective, a circuit including means for illuminating the indicator alone,.an open second circuit including separate meansY for illuminating uthe `'objective and' indicator,
and means for completing the second'circuit upon failure of the'firs't circuit. 2
ln testimony whereof lf hereunto afix my l.man A. Monnrson.