US2383202A - Lighting system - Google Patents

Description

Aug' '21 J. w. LAwsoN A 2,383,205

LIGHTING SYSTEM Filed'oct. 25, 1942 2l v i 1;.

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' 4f az 7 Patented Aug. 2'1, 1945 "2,383,202 l eral Motors Corporation, Detroit, Mich., a, corporation of Delaware i n i NroFFicE Application october 23, 1942, serial No. 463,119 44 claims. `(ci. 315-83) This invention relates to lighting systems for automobiles `and aims to .provide for the addition to the `regular automobile lighting `system of black-out lights controlled by an auxiliary switch which operates when turning on any of the blackout lights to prevent turning on any of the regular lamps `of `the automobile by the main lighting switch.

Further objects and advantages of thepresent invention will be apparent from the following description, reference being had'to the accompany ing drawing wherein a preferred embodiment of` the present invention is clearly shown,

In thedrawing: 4 Fig. 1 is a wiring diagram of a lightingsystem for automobiles having regular or service lanips controlled by a` switch, and black-out lamps controlled by a switch whichcontrols circuits leading to the service lamp switch.

Figs. 2 and 3 show other positions of the biackoutswitch. i i i 1 In Fig. l the service lamp switch is indicated generally by numeral l and the black-out lamp 1 switchby numeral 30.` The service lampswitch ill has movable contact II and stationarycontacts I2, I3,` I4, land IB. Contacts I2 and I3 are connected by strap I1. Contacts I2 and I3 are connected by wire I8, leading to acontact 4U .of switch 3D, which in the off position provides a connection between wire I8 and the battery 20. `Contact `I4 is` connected with parking lamps 2|,

contact I5 is connected with tail-lamp filaments 22; and contact I6 is connected witha dimmer switch `23 which, in theposition shown, `makes a ,connection with the main headlight filaments' 4o of bissisout'iight switch au and wire iii. Then the service lamps can be controlled bythe service light switch. In Hg. 1 switch Contact l is shown inthe-off position. In the rston posi-tion contact II imoves to the Aright to connect contacts I2, I4` and I5, This connectsthe parking lamp laments *2| andthe tail-lamp filaments 22 with the battery. In the second on position contact II connects contacts I3, |5and I6,` inorments 22 and with the dimmerswitch 23 bywhich either `the main laments 24 or` the depressed beam filament 25 of lamps 26 `may be connected`v with the battery.

When the black-.out` lamp switch is in the off position, shown in Fig. 1, contact 3| connects contacts 34 and 4|. A connection is provided between the battery 20, stop-light switch 44 and the service stoplight lan'ient 21 through al circuit which includes contact 36, fuse 43, contact 31, stop-light switch 44, and contacts 4|,` 3|, 34. YThus the black-out lamp switch'3lliprovides a connection in the off position oftheswitch between the stop-light switch 44 and the service stop-lamp filament 21.. In the first on position of the black-out lamp contacts`3l, 32, shown in Fig. 2, the contact 3| separates from contact 34 24 or, in the dot-and-dash line position 23a,

ifnaliesa` connection with the depressed beam filaments 25 of the service headlamps 26.

The black-out switch 3o hasmovablei contacts 3| and 32, mechanically connected ,by part 33,

and stationary-contacts 34, 35,` 36, 31, 38, 33, 40 and 4|, Contact 34 is connected with service stop-lamp filaments 21; contact 35' is connected with black-out stop-lamp filament 42; contact 36 is connected with battery 2|);'contact' 31 is` connected by fuse 43 to contact 38 and with stoplight switch 44 which is connected `with contact 4I Contact 38 is connected with black-out driving lamp filament 45; contact 39 is connected with black-out marker lamp filaments 46 land the black-out tail-lamp lainent 41.

When black-out switch contacts 3| and 32 are `in the off position shown in Fig. 1, battery 20 is connected with contacts I2 and I3 of the service light switch I0, through contacts 36, 32 and so that the service stop-lights 21 can not be operatedby the `stop-li'ghtswitcl'i- 44, and connects contacts 35 and 4| so that, when the stop-.light switch 44` is closed, only the black-out stop-lamp filament 42 will burn. In the `iirst oniposition cf theblack-out switch 30, contact 32 `moves away from contact 4B to disconnect the battery 2G from f the service lamp switch l0 and to make a connection between contacts 31 and 39 thereby connecting the battery with the black-out marker lampsd and with the blackout tail-lamps 41.

In the second on positionof the black-out lampswitch,v shown in Fig. 3, the contact 3| connects contacts'35 and 4|, as shown in Fig; 3, so that vthe stop-light switch 44 `will control the black-out stop lamp filament "42. Contact 32conne`cts" contacts 31, 38 and"39 so that the battery `2li is connected with the blacki outr marker lamp 43, the black-out tail lamp 41 and the black-out driving lamp`45.

The present invention provides for adding to aniexisting automobile lighting system comprising service headlamps, service parking lamps,

` service stop and tail-lamps, and the main control switch, a dimmer switch and a stop-light switch, all of the necessary equipment required for a black-out without discarding any of the switches of the service lighting system. To the conventional service lighting system are added a blackout driving lamp, black-out marker lamps, a black-out stop-lamp and tail-lamp and an auX- iliary black-out control switch which controls the connection between the battery and service lamp switch so that the service lamps cannot be operated when any of the black-out lamps are turned on. The black-out lamp switch selectively controls the connection between the stoplight switch and the service stop-lamp filament or the black-out stop-lamp filaments. In case the service stop-lamp is in 4an on position when the black-out signal is given, the turning on of any of the black-out lamps immediately turns off any of the service lamps which may have been burning. While the embodiment of the present invention as herein disclosed, constitutes a'preferred form, it is to be understood that other forms might =be adopted, all coming within the scope of the claims which follow. Y What is claimed is as follows: 1. An automobile lighting system comprising service lamp 'filaments including head and taillamp filaments and a stop-light filament, blackout lamp filaments lincluding `driving and tail lamp filaments and a stop-light filament, a current source, a service lamp switch' for controlling the service head and tail lamp filaments, a stoplight switch for controlling either the service stop-light filament or the black-out stop-light filament and having a movable contact connected with the source and a terminal contact adapted to be engaged by the movable contact, and a, black-out lamp controlling switch having an ofi position providing a connection between the source and service lamp switch and a con. nection between the terminal contact of the stoplight switch and the service stop-light lament,

and having an on position providing for in-- terruption of the connection between the current source and service lamp switch and of the connection between saidy terminal contact of the stoplight switch and the service stop-light filamentand providinga connection between said terminal contact of the stop-light switch and the black-out stop-light lament.

with' the black-out stop-light filament, and having a second on position for making the connections and disconnections of the first on position and also for connecting the source with the black-out driving lamp.

3. A n automobile lighting system comprising, service lampfilaments including head and taillamp filaments and a stop-light filament;4 blackout lamp filaments including `driving and tail lamp filaments and a stop-light filament; a current source; a service lamp switch for controlling the service head and tail lamp filaments; a blackout switch having. an off position and a plurality of on positions, said black-out switch including a first group of contacts and a second group of contacts, each' group of contacts in' cluding a movable contact and stationary contacts; means for moving the movable contacts simultaneously; means for electrically connecting Y two of the stationary contacts of the second group with the` source; conductingV means for lelectrically connecting one of said connected sta-` tionary contacts with one.of the stationary contacts of the first group, said connecting means including a stop-light switch for controlling connections either to the service stop-light filament or the black-out stop-light lament, said blackout switch' when in its ,oi position conductively `connecting-the service lamp switch with and also providing a connection whereby the black-out stop-light filament can be connected with the source upon closing of the stop-light switch.v f

4. An automobile lighting system comprising,

. service lamp filaments for normal night driving ing lamp, marker lamp, tail-lamp and stop-light filaments; a service lamp switch having an off position, a first on position for causing the parking` and tail-lamp filaments to burn, and a second on position for causing the head-lamp andv tail-lamp filaments to burn;A a current source; a stop-light switch having a movable Y contact connecte-d with the source and a terminal adapted to lbe engaged by the movable contact; and a black-out light switch having an 01T position providing a' connection between the source and the service lamp vswitch and between the service'stop-light and the other terminal of the stop-light switch, and having a first on position disconnecting the source from the servicelamp switch and connecting the source with the black-out tail and marker laments and connecting said terminal of the stop-light switch and a stop-light lamp filament; auxiliary lamp filamentsr for black-out driving and a black-out stop-light lamp filament; a current source; a

service lamp switch for controlling the service lamp filaments; a stop-light switch for controlling either th'e service-stop light filament or the black-out stop-light lament and having a movable conta-ct and a` stationary contact, one of said contacts being connected with the source; and a black-out lamp filament controllingswitch having a connectionwith the source and having connections with the service lamp switch and the stop light switch, said last mentioned connections being arranged so that service lamp switch is connected with the source only when the black-out is in the o position and when the black-out switch is moved to an on position, said circuit connections from the source to therservice lamp switch are interrupted and certain black-outlament connections are connected with the source', said certain connection being dependent upon the particular on position of the black-out switch.

JOHN w.` LAwsoN.

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