US1074949A - Electric lamp. - Google Patents

Description

A. G. HOBAN & Ra L. MARQUIS.

' ELECTRIC LAMP. IAPPLIUATION TILED DEO.10, 1912.

l,?4@,949..- Patented Oct. 7, 1913.

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t ltllTEll I ll hillllll l lf @Fl lllldn ALBERT G. HOBAN w lhl'll RALPH I. MARQUIS, OF DAYTON, QHIG.

ELECTRIC LAMP.

Specification of Letters Patent.

Patented @ctfi, 1913 Application filed December 10, 1912. Serial No. 735,927.

To all whom it may concern:

Be it known that we, AIMER'L G. HOBAN and RALPH/L. IVlARQUIS, citizens of the United States, residing at Dayton, in the county of Montgomery and State of Ohio have invented certain new and useful lin- .provements in Electric Lamps, of which ed to the deterioratin influence of water and other elements.

A further object of the invention is to provide for the lamp bulb, a reflecting shield so constructed and equipped as to vary at will the color of the light emitted.

Other important and incidental objects will he brought out in the following specifi cation and subjoined claims.

In the accompanying drawings, Figure l is a sectional elevation of an incandescent electric lamp provided with our improved protecting and reflecting means. And Fig. 2 is a top plan View of the same.

Throughout the specification and drawings, similar reference characters denote corresponding parts. i

In the detailed description of our invention, 1 designates a cup-shaped receptacle adapted to receive a lamp socket 2. Passing through the base of the receptacle '1, and entering the lamp socket 2, are leading-in Wires 3 and 4 which supply the lamp with current. Extending around the upper por-- tion of the receptacle 1 is an annular flange 5, and between the latter and the top of the receptacle is a threaded portion 7 which permits the ,said receptacle to be screwed into an aperture in. a supporting plate This plate 6 is usually the panel of an electric sign, and in order that it may have sufficient strength and rigidityforthat purpose it is preferably ponstructed of galvan i'zcd iron.

The receptacle 1 is screwed into the plate 6 until the flange 5 bears tightly against the bottom surface of said plate. When so positioned in the plate 6, the threaded portion 7 of the receptacle 1 will extend a short distance above said plate. The receptacle is now ready to receive an incandescent lamp 8 having a neck portion 9 which is adapted to be screwed into a socket 2 from the opposite side of, the plate 6.

Adapted to be fitted over the lamp 8 is a conical shield or cap 10, which may be constructed of Iporcelain or othcrmaterial which will give tie necessary protecting and reflecting properties. The shield 10 is internallyscrew-threaded at its end of smallest diameter in order that it may be received by the threaded portion 7 of the receptacle 1 after said threaded portion has passed through the plate 6. After the receptacle 1 is in place on said plate andthe shield 10. is united thereto, these elements form ia Water and weather proof covering for the socket 2, and there is no possibihtyof wa for or other foreign matter seepin through the points of connection of the siield, receptacle and plate. l lccordin ly, the-damage and injury due to rust an other chemical decoinposition when an electric sign is exposed to the weather, is avoided in so far as the lamp and its terminals are concerned.

Near its end of largest diameter and-projecting from the inner surface of the shield 10, is'an annular flange or ledge 11 upon which is adapted to rest acircular colored glass 12. This glass is removable to make place for a similar glass of another color, and is held in place by split ring 13having upwardly projecting ends l ladapted to be grasped by the fingers. The tension of the ring 13 is sullicient to force it tightly into an annular recess 15 in the shield 10 imn'iediately above the glass 12, to hold the latter firmly in place on the ledgell, lt will now be seen; that the light emitted by the lamp 8 will be directed outwardly" by the side walls of the shield 10, and colored as passes through the glass 12. It is thus sihle to color a character'which a lamp 6 may assist in forming in an electric'sign.

lln operation, the receptacle 1 isscreW-ed 19c;

into an aperture in the plat/e76 untilthef' flange 5 bears tightly against the lower sills face of said plate. ;An incandescent lamp 8-. is then screwed into the socket 2 within the receptacle 1, and the shield 10 tightly 10 5 screwed onto the threaded portion 0 said receptacle. The receptacle and shield will now cooperate to protect the socketand lamp from. the deteriorating influence of the weather. A colored glass is now placed against the ledge 11, and held in place by the ring 13, to .colorthe light emitted by the lamp.

We do not Wish to be limited to the details of construction herein shown and described,

and any alterations or modifications may be,

made therein to suit difierent conditions oi.

use.

Having described our invention, We claim:

1. In an electric sign, an electric lamp socket, an electric lamp, a receptacle for said socket, a conical shield adapted to be screwed upon the upper end of said receptacle to surround said lamp, an annular ledge projecting from the interior surface of said shield near its outer end, a colored glass resting upon said ledge to color the light emitted by the lamp, and a split ring 'the outer circumferential portion of which rests within an annular recess in the shield and the inner circumferential portion of which'bears upon the glass to hold the latter firmly upon the ledge, substantially as described.

2. In an electric sign, an electric lamp, an

electric lamp socket, a receptacle in which said. socket is inclosed, a supporting plate, an aperture in said plate to receive the receptacle, an annular flange projecting from the upper, outer surface of said receptacle and adapted to bear against the plate, said receptacle having a circumferential threaded portion above said flange, said threaded portion extending beyond the plate When the flange is in contact with it, a conical shield surrounding said lamp, said shield having its end of smallest diameter threaded to receive the threaded portion of said receptacle, and a removable colored glass disposed in the outer end of said shield to color the light emitted by the lamp, substantially as described.

In testimony whereof we have hereunto set our hands this 7th day of December A. D. 1912.

' ALBERT G. HOBAN.

RALPH L. MARQUIS. Witnesses:

GEORGE H. SNYDER, HOWARD S. SM1TH..

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