US1658549A - Lamp - Google Patents

Description

Feb. 7, 1928. 1 1,658,549

BLACKMORE LAMP Filed May 2. 1923 2 Sheetg-Sheet'l avwmtoz Patented Feb. 7, 1928.

UNITED STATES PATENT OFFICE.

LLOYD BLAOKMORE, OF HIGHLAND PARK, MICHIGAN, ASSIGNOR TO GENERAL MOTORS CORPORATION, OF DETROIT, MICHIGAN, A CORPORATION OF DELAWARE.

LAMP.

Application filed m 2, 1923. Serial so. 636,228,

preferably of metal such as duralumin, tov

- permit the supporting of an electric bulb or light substantially at its axis. The reflector may form the body of the lamp or. may be removably mounted in the open end of an enclosing shell, and in the preferred form of the invention-the reflector is doubled back on itself to form anencircling frame or bezel for the glass front. In one illustrative embodiment of the invention this doubled back portion forms a cylindrical flange which engages an annular ridge on the shell to give the lamp a finished appearance.

The reflector is removably secured in the shell by a member which may also, if desired, be used to secure the usual glass or lens in the open end of the reflector. In one arrangement selected for illustration this member is in the form of a spring ring having ofl'set portions which project through alined openings in the reflector and the shell and which may be seated in a roove formed in the reflector, projecting su ciently therefrom to hold the glass in place against an annular shoulder formed in the reflector;

Another feature of the invention relates to an arrangement for supporting the socket for the electric connections on the reflector,

or for'passing the connecting wires through the lamp support to a socket carried by the support. Other features and objects of the invention, including a new connection for the tie rod and various other novel combinations of parts and desirable particular constructions, will be apparent from the fol lowing description of the illustrative embodiments shown in the accompanying drawings, in which:

' Figure 1 is a view of a headlight in front elevation, with parts broken away and shown in vertical section on the line 1-1 of Figure-2;

Figure 2 1s a section substantially on the line 2-2 of Figure 1 showing the manner of securing the reflector in the-open end of its shell;

reflector 118. Thereflector 118 Figure 3 is a front elevation of a modified form;

Figure 4 is a vertical section on 4-4 of Figure 3;

Figure 5 is a front elevation, partly brpiken away, of a diflerently-modifled form; an

FigureG is a View, partly in side elevation and partly'in vertical section, of the modification shown in Figure 5.

In the first'illustrative embodiment of the invention the parts are enclosed in a shell 10, which has a centrally arranged socket 12 to permit connection to an electric circuit. The socket 12 is connected to an inner socket 14; which carries the bulb o'r light 16, the socket 14 being arranged in an opening the line substantially at the anis of a reflector 18 of duralumin or other metal which is drawn on itself at 20 to form a substantially cylindrical flange which engages an annular ridge 22 0n the shell 10 to provide a finished pleasing appearance on the exterior of the lamp. The usual glass or lens 24L- may be seated against a gasket or rubber washer 26 engaglng a shoulder formed in the reflector 18, and it is held in place by a spring wire 28 which is seated in a groove formed in the reflector, but which projects from the groove sufficiently to hold the glass in place. The reflector'and shell are provided with alined openings 30 through which project offset portions 32 of the spring wire 28, thus locking the reflector and shell efl'ectively together by means of the member which holds the glass or lens 24.

The modification shown in Figures 3 and 4,1 diifers from that of Figures 1 and 2,in that the casing 110 does not carry the socket 112 for the electrical connections, the socket being mounted at the bottom of the flange 120 of reflector 118, and being connected to the bulb 116 in socket 114 by wires 117. The glass 124 is provided with a gasket or washer 126, which may be of rubber, and which is U-shaped in cross section to embrace the edge of the glass, and is held in place by a spring wire 128 which may have oflsetportions 132 snapping into holes in the is shown as being secured to casing 1 10'by rivets 134.

'One manner of supporting the lamp is be bolted or riveted to the fender, and an arm 152 bolted or otherwise secured to a tie rod 154, shown as a tubular member, which is similarly connected to the bracket 146 of tor 218 may be riveted or otherwise secured to casing2i0. Glass 224, with its gasket 226 of U-shaped cross-section, is held in place by spring wire 228.

217 pass through a hole in the rear of rod 236, and through stem 238, which is hollow, to socket 212, which is secured to or integral with nut 240. Nut 240 cooperates with convex washer 242 and concave washer 244, the

latter being shown as adjustably threaded onstem 238, to clamp the lamp on bracket 246, with or without look washer 248. Bracket 246 hasan arm 250 to be secured to the fender. "The rod 236 is extended to form a portion 252 projecting through a hole in flange 220, and which 1s connected by a tie rod 254, shown as a tubular member, to the opposite lamp.

While illustrative embodiments of my invention have been described in detail, it is not my intention to limit its scope to those embodimentsor otherwise than by the terms of the appended claims- It is to be noted outer ed that, while not in all of its aspectsnecessarily. limited thereto, the invent-ion is es cially useful in lamps which are-.provi ed with reflectors of duralumin or an equivalent material which. does not tarnish and which can readily be worked into the required form and'which provides a surface of pleasing appearance on the parts which extendbeyond the glass or lens 24 and which aretherefore exposed.

I claim:

1; A lamp comprising, in combination, an outer shell, areflector in the shell having a backwardly bent portion fitting over the edge of the shell, and a locking ring within the reflector having ofl'set portions projecting through alined openings in the reflector and the shell to; fastenthem together.

2. A lamp comprising, in combination, an

outer shell, a reflector in theshell, a glass in the reflector, and a locking ring having oifset portions projecting through alined openings in the reflector and the shell to lock the Eefiector in the shell and the glass in the reector.

1 3. A lamp comprising, in combination, an

outer shell, a combination door and reflec 0 tor mounted in the open end of the shell, :1 In this. modlficatlon the'connectmg WIIGS.

glass mounted in the openendof the reflector, and common means for securing the gllalsls in thg reflector and the reflector in the s e 4. The combination of a lamp casing having a forwardly projecting portion defining an open end, a reflector fitt ng in the open end of said casing having a turned-back forming a channel in whichthe forward y projecting portion of said casing is received, means engaging the inner wall of said channel and the orwardly proectmgportion of said casing for securing the reflector m the casing, and a transpar ent medium for the open end of, the said reflector held means. In testlmonywhe'reof I afiix my signature.

LLOYD BLAoKnonn.

in position by said last-named

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