US2293777A - Indicator-warning lamp - Google Patents

Description

i Pnionioii Ang. 25, 1942 FFlcE I mnrca'ronlwiiamc LAMP Raymond x. stout, Dayton, ohio Application May 8,1940', Serial No. 334,004

zcloimo. (ci. 17u-329i i (Granted undoiino not of Mai-on 3, isss, ng

' amended April 3G, 192851370, 0. G. 757) The invention described herein may be manufactured and used by or for the Government for governmental purposes, Ywithout the payment tome of any royalty thereon.

This application is similar to my Patent 2,075,068 (Illuminating means for indicating instruments) in that both provide means whereby Figure 2 is a cross-sectional view illustrating vanother form of the invention, with the warning lamp located in the corner lug 'of an instrument.

Figure 3 is a front view of the lamp vand instrument lug shown in Figure .2.

Figure 4 is still another form of the invention,

' illustrating an adapter which makes it possiblefy the lamp bulb may be easily and readily removed and/or replaced without necessitating the taking apart of any elements of the instrument panel upon which it is placed.

-The present invention relates to a miniature indicator or warning lamp, a reflecting surface and means for readily mounting the assembly upon a' panel for indicating the position of various controls or giving a visual warning.`

one of the objects of this invention is to provide a novel, easy and quickly removable means for mounting an outwardly projecting warning lamp upon a panel.

-to use commercial miniature incandescent instrument lightbulbs for warning lamps.v

. Figure 6.

A particular object of the invention is to pro- `vide in combination a reector and miniature lamp so positioned with respect to each other reflector assembly, vof which both the lamp bulb and reflector are dyed or paintedthe same color so as to secure a conspicuous ow which will be readily visible in the daytime and without casting objectionable glare at night.

A still further object is to provide a warning is to color this novel lamp.

lamp readily replaceable from thefront ofthe panel with a plain, frosted or colored jewelfend cap.

The above and other objects and advantages Figure 5 is a front view illustrating the manner in which aplurality of lamps ofthe type shownin Figure 4 may be mounted in a single panel.

Figure 6 is another cross-sectional view, including a protective cover in the form of a lens or jewel. o

Figure 'l is a front view of the lamp shown in Figure 8 is a further form illustrated by adetailed cross section o1' thei warning lamp and mounting bracket.

Figure 9 is a front Vview of the lamp and mounting bracket shown in Figure 8.

There is thus provided a novel removable structure adapted for use as a warning or indie eating lamp whereby thesaid lamp is 'energized upon insertion or partial insertion of, the structure within the receptacle, socket or instrument casing.` v

Referring now to the drawing, and more particularly to Figure 1, the lamp bulb I is mounted permanently in the protective member 2, with y the reector 3 constructed as an integral part of the assembly. The knurled portion l acts 'asa thumb hold for inserting the warning lamp assembly into itsreceptacle 5. An insulating bushling 6 ,(see also Fig. 2)- extends within the member'Z and supports an end contact (not in a position to be seen inthis figure but' similar to the contact 20 shown in Fig. 2). One end of the/.bulb

xlament is connected to thisv contact while the of the inventionv will appear more fully hereinafter from a consideration of the detailed vdescription which follows, when taken in connectionwith the accompanying drawing wherein several embodiments o! the vinvention are illustrated. -It is to be expressly understood, however, that the drawing is for the purpose of illustration and description only, and is not designed or to be considered as dening the limits of the inother end is connected to the member 2 which serves as the other` contact. The thread lis for securing the warning lamp to the receptacle` which in turn is clamped to the vpanel by nut l.

The Vshield 9 houses the conductorwhich connects the lamp into the desired circuit.

In the instrument'installation of Figures 2 and 3 the instrument is illustrated as IIL-with the vention, reference being hadto the appended claims for this purpose.

' Figure 1 is a .perspective view -of one form of the warning lamptogether with its lreceptacle or socket. I

lili by means of wire I9. The bulb I -is located in the center of reflector 3 in such a manner that the light rays will be cast to the front of the instrument and can be viewed through a large angle.

Referring now to Figures 4 and 5, the commercial instrument lamp 3| is installed in the protective mount 2 by means of insulating bushing 5. The lampassembly is shown secured to a panel 2| and making contact with spring conf tact 32. The front view shown in Figure 5 illustrates how a plurality of the warning lamps may be installed upon one panel 2I.` 'I'he bulbs I are here shown with their respective reflectors 3.

Figures 6 and '7 show another modification of surrounding said one end of said lamp bulb,vthe

my invention, where the support 2 has a lamp ament I2 is connected to this mount and to con tact 20. A soldering terminal 4I is attached to bracket 43, which supports soldering terminal and contact 48 through insulator 42. The insulator 6 holds the bulbin place with respect to the support and reflector `3. A front view is shown of bracket 43. protective mount support 2, reflector 3, and bulb I'. v,

Although several embodiments of the invention are illustrated and described, various changes which will now appear to those skilled in the art, may be made in the form and relative arrangement of the various parts withoutrdeparting from the spirit and scope of the invention. Reference is therefore to be had to the appended claims for a denition of the limits of said invention.

What is claimed is:

threads on said member being adapted to engage complementary threads in an `opening in, said panel or the like,a ange on said one end of said member adapted to seat against the face of said panel, the terminals of said lamp bulb being connectedl to contactsV on said member, and said contacts being adapted to engage complementary contact means on said panel or the like when said lamp is mounted in said panel. 2.'A miniature warning lamp device adapted for mounting in an instrument lug or the like,` comprising a tubular metallic protective member externally threaded for mounting the device and havinga bore of the approximate size of a miniature lamp bulb, a miniature lamp bulb housed within said bore and adapted to 'emit light from one end of said tubular member. a hanged head on said one end of said member, an opening in said head extending into said bore adjacent said lamp bulb so as to expose a portion of said bulb, a closure for said bore on the other end of said member, said closure including a contact element, an electrical connection from said lamp bulb to said metallic protective member, and an electrical connection from said lamp bulb to said contact element, all parts of said device except said iianged head being contained within the radial limits of said threaded tubular member whereby said device may be readily in-v serted in, or removed from, the front side of an instrument lug or the like, as a complete unit.

RAYMOND K. STOUT.

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