US3059A - Grate-bar - Google Patents

Description

-i TED STATES PATENT WM. FERREL, OF CHARLESTON DISTRICT, SOUTH CAROLINA.

GRATE-BAR.

Specicaton of Letters Patent No. 3,059, dated April 25, 1843.

y tion.

to any of the ordinary known size, or sizes,

of the ordinary fire bar or grating, now in common or in general use, a reference being had to the accompanying drawings, in the which- Figure l, is a perspective view, of a single length of my ire proof bar or grating, with Vone end of it left open, as is shown at letter F, so as to admit if necessary anaddit-ional length. Fig. 2 represents a perspective view of two lengths of my re proof bar or grating, connected or joined by a center re proof bearernas shown at letter Gr. Fig. 3 represents a perspective view of my ire proof bearer. Fig. 4, represents arsectional view of my fire proot1 bearer. Fig. 5 represents sectional views, of my iire proof bar or grating.

To enable others skilled in the art to make, form, construct, and use, this my discovery and improvement, I will proceed to describe its make, form, construction, use and adapta tion, to all steam power, agency, or engines in mechanical use and operation.

I construct, and cast this my improvement of fire proof bar or grating, in any of the known forms, make, or model excepting of this my discovery, invention and new and useful improvement, of making, forming, construct-ing, and providing a cavity inthe bar or grating, which cavity, I call the ashes cavity, and which I fill with ashes, and as shown in the accompanying Vdrawings at letters A, and also, as shown in the sectiona drawings at letters a a. V

The space or r4opening between my iire proof bar or grating, as shown in the accompanying drawings, at letters C, represents the necessary space or opening, which ad- Y mits a free circulation or draft, between the bar or grating, which action and eiect in common, with the ashes cavity does4 contribute to lessenV and prevent, any undue degree of temperature, to fuse and destroy, the metal, of my re proof bar or grating.`

The bearer of my fire proof bar or grating, I make, form, construct and cast after f f the accompanying drawings, as shown at,

letters D, in the perspective and sectional drawings. The bottom of the said fire proof bearer I construct, and cast from one inch to, any of the ordinary known size or sizes,

of the ordinary fire bar or grating, now'in' common, and in general use.

I/Vhat I claim as my discovery, invention, and new and useful improvement, on the ordinary re bar or grating-is this of my invention and improvement, of-

Forming and adapting a cavity,in my fire proof bar or grating, which I ll with ashes, and which I call the ashes cavity, the principle, operation, and use of the said-ashes cavity, when filled wit-h ashes, it`being a nonconductor of heat, operates, in its effect, to prevent that excess of temperature on the metal, thereby rendering my fire proof bar or grating more durable, and capable of bearing the heat, which does in common and in general fuse or melt and destroy the ordinary re bar or grating, as is now in common and in general use, using for that purpose cast, wrought iron, or any other metal or .metallic compound which may be used for the intended purpose and effect.

WM. FERREL. Witnesses:

THOMAS R. SALTAR, ROBT. L. BAKER.

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