US1117521A - Guard for inverted incandescent mantles. - Google Patents

Description

H. ROSBNTHAL.

GUARD FOR INVBRTBD INGANDESGENT MANTLES.

APPLICATION HLBD JULY 15,1913.

1,1 17,521, Patented Nov.17. 1914.

@ Zn fes: fn Vania/z @a/dac Jzzz' Rosenthal,

tHE MORRIS FErENS C0.. PHOTCLLITNO. WASHINmNna 7V @IWI'IED STATES PATENT OFFICE.`

HANS ROSENlI-IAL, OF BERLIN, GERMANY, ASSIGNOR TO JULIUS PINTSCH AKTIEN GESELLSCHAFT, OF BERLIN, GER-MANY.

GUARD FOR INVERTED INCANDESCENT MANTLES.

To all Lo/0m it may concern .Be it known that I, HANS RosnNTHAL, a citizen of the German Empire, and residing at Berlin, German Empire, have invented a certain new and useful Guard for Inverted Incandescent Mantles, of which the following is a description.

The present invention relates to means for providing a provisional or emergency light in connection` with incandescent gas lamps, in case the main light or iiame becomes inoperative.

The invention relates more particularly to inverted incandescent gas lighting devices.

In view of the decreasing size of the external dimensions of a burner for a certain predetermined radiation of light, z'. e. owing dto the introduction of stronger light-units. and to the employment of heating media of higher tei'nperature, due to the employment of better gas, such as gas under pressure or previous mixture of gas and air, it has become necessary to shape the lower end of the guardso as to prevent the glass from breaking, in case the mantle broke and the flame exercised its full heating power. For this purpose, among other known means, a baille plate has been employed.

The object of the present invention is to provide a special incandescent body in the bot-tom oit the guard, which shall be rendered incandescent by the heating iiame when the mantle is inoperative. The same result may be attained also by properly constructing the baille plate. This body must consist of a refractory material such, for instance, as magnesium, aluminum, metal, metallic oXid or of a nare earth and may be of any desired shape. In many cases this body will be advantageously made conical or provided with conical projections, in order to retain parts of the destroyed mantle or hood. The body may also be constructed as a saucer or hollow ball or cylinder. with advantage, especially if holes are provided in the saucer or ball for the outlet of gases of combustion, or if they contain a material of high illuminating power, such as incandescent material.

In the drawing, Figure l is a sectional view of a mantle carrier and guard. Figs. 2, 3, 4 and 5 show various forms of my invention adapted to be applied within the supporting guard of the gas lamp.

`Speeicaton of Letters Patent.

Application filed` July 15, 1913.

Patented Nov. 17, 1914.

Serial No. 779,177.

In the drawing Fig. l shows any ordinary :l'orm of mantle support for a gas lamp at A. and the mantle at B with a protecting guard 0r frame C, this guard terminating in a base section a. In case the mantle is broken or destroyed it is desired to continue the light in some measure and to this end I provide a separate body of incandescent material supported by the guard, `preterably by the base section thereof so as to be in line with the gas jet and to be made incandescent thereby. I may, as shown in Fig. 2, make this body in the form of a cup which may receive the broken parts of the mantle. as shown in Fig. 3, it may be made with a.

base oil dislt form and an upstanding pointed section. In Fig. 4 I have shown a pronged device, and as shown in Fig. 5 I may vary this by a series of prongs of unequal. length. The flame from the gas impinging upon this body makes i-t incandescent, and thus when the mantle becomes defective or inoperative for any reason the incandescent body becomes effective. It is also advantageous to prevent this emergency arrangement from devia-ting too much heat to the guard, since this would of course diminish the illuminating effect. further improvement is attained if an automatic igniting device by means of platinum, platinum black or the like material is applied to the emergency device, which would avoid the escape of unburnt gas in any case. On the other hand all devices are objectionable which glow, when the main light operates properly, as also all devices attached to the lamp glass independently of the mantle, because they render the cleaning of the glass difficult, they are easily damaged and their replacement is often overlooked. The guard or protecting cage is the best place for the emergency illumination.

I claim as my invention 1. In combination with an inverted incandescent burner having a guard, a separate incandescent body in the bottom of the guard adapted to be rendered incandescent bv the main flame.

Q. In combination with an inverted incandescent burner having a guard, a separate incandescent body in the bottom of the guard adapted to be rendered incandescent by the main `Haine and provided with radially extending arms.

3. In combination with an inverted incandescent burner having a guard, '2L separate incandescent body n the bottom of the guard adapted to be rendered incandescent by the main flame and havin a cup mounted in the bottom of the guar to receive broken parts of a defective incandescent body.

HANS ROSENTHAL.

Witnesses HENRY HASPER, /VOLDEMAR HAUPT.

Copies of this patent may be obtainedionve' cents each, fby addressing the l Commissioner of Patents,

Washington, D. C.

Images