US1681491A - Electric sign - Google Patents

Description

Aug. 21, 1928; LES-IAQI I .1; E. LONG ELECTRIC smul Filed April 2G1 IN VENT OR o [In my.

ATTOR EY Patented Au 21, 1928.

UNITED STATES PATENT OFFICE.

. JOHN E. LONG, OF MULTNOMAH, .OREGON.

ELECTRIC SIGN.

Application filed April 20, 1927. Serial No. 185,162.

My invention relates to electric display signs and especially to those in which the individual electric light bulbscan be separately energized, and for-this purpose are connected by separate wires to a circuit controller.

The principal object of my invention is to provide an extremely simple and inexpensive electric display sign of this character, which vide an electric display sign in which the separate light bulbs are recessedrelatively to the surface of such sign, which. surface extends substantially in a plane. Said recesses for such electric light globes are integral portions of the display surface of such sign, be-

ing dished inwardly so as to form semispherical recesses to partially encircle such globes. l

A further object of my invention is to provide an electric sign of this character in. which nently and to have their illuminative power concentrated.

A further and more specific object of my invention is to provide a sign comprising two relatively flat members one of whichis relatively' thin and which constitutes the display surface and the other which is substantially thicker constitutes the base, and to provide the member constituting such display surfacewith more rigidity I form therein a plurality of recesses to stifien such ,member against twisting and warping.

This application is intended as a division and as a continuation-in part, of that phase of my inventiondivided out of the a plicat-ion which matured into Patent No. 1,5 2,212, granted February 9, 1926, the division being made to comply with the examiners requirement.

The details of my invention are hereinafter described in greater detail and with reference to the accompanying drawings, in which Fig. 1 is an elevation of an electric display I sign my invention;

Fig. 2 is a transverse section taken on the line 2-2 in Fig. 1 through such electric display sign and such figure illustrates the manner of forming recwses about. the electric light globes; and

Fig. 3, is a fragmentary elevation of a por-- tion of the common terminal plane plate showing the constructionof the apertures for receiving and retaining the bases of such electric light globes.

My improved electric display sign comprises a frame a, of insulating material of convenient form and size, in which are arranged in spaced relation, an insulating base Y b, and a terminal plate 0, both extending over the entire surface of-such sign. Arranged in predetermined pattern are a plurality of dished recesses d formed in such common terminal plate and being substantially semispherical in cross-section, as is shown in Fig. 2, which not only form pockets for receiving and protecting the electric light globes 6, but

also serve tostifien such terminal plate which otherwise would be quite flexible. Such recesses d, are preferably painted with a material which serves as a reflective medium, some material for example such as aluminum paint, and the portions 0 of such terminal plate between such recesses are coated with a material having the property of absorbing light such, for example. as rough black paint. In the bottom of each recessis a punched aperture f, substantially the diameter of the grooved portion of the electric light a globe base 6 and a radial slit 9 is formedalorigside such aperture and the portions of the plate adjacent the latter and at opposite sides of the slit are bent angularly relatively to each other to form the perimeter of the aperture into an internally threaded socket for such threaded base of an electric light globe to be received and retained therein.

respondingly spaced insulated terminals 13, carriedrby the base I) and each ofsuch terminals is connected by a separate wire 7' to the control mechanism (not shown). The recesses formed are of such depth that the filaments of the-globes carried therein will lie the effect of a void between the apertures when such electric light globes are energized In alignment with such apertures are cor-- below the plane of the terminal plate between such recesses. Thus the light given ofi from such filaments will not strike such plane surfaces to illuminate the latter. This produces and causes the design formed by the energizing of such lights and spaced portions to stand out more clearly.

I claim 1. In an electric sign, an insulating base,

slit radially to the latter, and bent an ularly to form light receiving sockets in the liuottom of such formed recesses.

3. In an electric sign, an insulating base carrying one electric terminal and a terminal plate spaced thereover and provided with an aperture in registry with such base terminal, the portion of the plate adjacent such aperture being slit radially to such aperture and bent angularly at opposite sides'of such slit, to form a light receiving socket in such aperture.

JOHN E. LONG.

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