US389135A - Geoege bender - Google Patents

Description

(No Model.)

G. BENDER.

TYPE METAL POT AND PURNAGB.

N0. 389,135. Patented Sept. 4, 1888.

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UNITED STATES PATENT OFFICE.

GEORGE BENDER, OF BROOKLYN, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE MANHATTAN TYPE FOUNDRY, OF NFV YORK,`N. Y.

TYPE-METAL POT AND FURNACE.

SPECIFICATION forming part of Letters Patent No. 389,135, dated September 4, 1888.

Application filed January li), lSrS. Serial No. 261291. (No model.)

.To all whom, iz? may concern:

Be it known that I, GEORGE BENDER, a citizen of the United States, residing at Brooklyn, Kings county, New York, have invented eertain new and useful Improvements in Type Metal Pots and Furnaces; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it apperro tains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures marked thereon, which form part of this specification.

My invention relates to the furnaces and ketr5 tles attached to type-casting machines; and the object of the invention is to prevent the oxidation of the molten metal and to surround the same with the heated air and products of combustion before they escape.

Heretofore the metal used for types had such a low melting-point that it required little orno care to keep the melting-kettle at the proper temperature; but with the introduction of type-metal composed largely of zinc the necessity has arisen for heating the metal to a much higher degree than usual,keeping it hot, and preventing oxidation. In brief, l. accomplish these purposes by providing the ordinary kettle of the type-casting machine with a hollow cover, which serves as an escape-flue for the products of combustion, and also by providing this cover, where it has an opening to the molten metal beneath,with an additional plate, which serves to exclude the outer air.

In the drawings,in which the same letters refer to the same parts in all the figures, Figure l represents a median vertical section of the melting-pot, furnace, and cover. Fig. 2 is a top plan view oi' the melting-kettle with the 4o cover removed. lilig. 4 is the same View with the cover on, showing concealed parts in dotted lines; and Fig. 8 is a betteln plan view of the cover itself'.

Referring to the drawings, K'is a kettle of a type-casting machine,p1ovided with a anged rim, k, and containing the pump l?, duct j), nipple N,and other usual appliances of a type casting machine. It is heated by means of the furnace F. In the example shown, the fuel 5o used is gas supplied through the pipe g, while Any other fuel may be a is an air-inlet pipe.

used, of course. In the ordinary kettle the hot air and products of combustion pass to the flue or chimney at the back of the kettle, and about opposite the nipple N, through which thejet of molten metal is thrown to the matrix. In my improvement I do not provide such an opening at the back of the kettle, lout provide two or more openings, as L' and 7c-,in the iianged rim of the kettle,near the 6o nipple N. The products of combustion pass through these openings to the hollow cover C, finally escaping into the fluef,eonnecting with the chimney. The cover C is composed, pref erably, of a single casting or piece of metal, and may be regarded as an extension of the flue. Its bottom plate forms a cover for the top of the kettle,to which it is secured by lugs l Z, or other suitable means, and is provided with openings o o', corresponding with the 70 openings 7c It in the kettle-rim k, and with other suitable openings, as E and n, to admit of the passage of the pump P and nipple N.

A small metal lid or auxiliary cover, h, having a hook or handle, II, closes the top of the kettle when it is filled with molten metal.

The advantages of my improvement are obvious. The flame, hot air, and gases from the furnace,instead ofescapin g di rectl y to the chin1- ney,andtherebyheatingtheback partoftheket- 30 tie at the expense of the remainder, are by my device forced forward and around the nipple, where the greatest amount of heat is needed, and, passing through the openings k and 76" in the rim and the corresponding openings, 0 o', `85 to the hollow cover C, are forced to pass over the top of the kettle and then escape tothe ehimney,serving to keep the top of the molten mass hot and to exclude the air therefrom. The small lid It, added at pleasure, serves to 9o further close the top of the kettle.

I am well aware that type-kettles have been made in which the furnaceliues are made to pass through the body of the molten metal; but such fines do not perform the varied functions of my improved invention.

That I claim as new is l. The combination, with the furnace of a typecasting machine, of a kettle provided with a anged rim having openings for the es- 10o cape of the products of combustion,and a hollow cover for the kettle provided with such 4. The combinatiomwith the kettle K,- having openings in its rim, of the hollow cover C, auxiliary cover h, and pump P, as and for the x5 purposes described.

In testimony whereof I alx my signature in presence of two witnesses.

GEORGE BENDER.

Witnesses:

T. G. WILKEs, WM. H. SLoAN.

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