US540146A - Michael r - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

-M. R. GONLEY. METALLURGICAL FURNACE.

No.. 540,146. Patented May 28, 1895,

lNl/ENTOH W/TNES ES Oa/WM/ V Q (No Model.) 2 Sheets-Sheet 2.

M. R. CONLEY.

METALLURGICAL FURNACE. No. 540,146. Patented May 28, 1895" Qfgy m 0 NR T515. N [v]: L2 [1 [S D 0 LL L S U y a L5 .L1

WITNESSES/I lNVE/VTOR ITED STATES PATENT FFFIQ.

MICHAEL R. ooNLEY, or BROOKLYN, ASSIGNOR TO WILLIAM BELL, on

NEW YORK, N. Y.

METALLURGICAL FURNACE.

SPECIFICATION forming part of Letters Patent No. 540,146, dated May 28, 1895. Application filed July 12, 1894. Serial No. 517,271. (No model.)

To all whom it may concern:

Be it known that 1, MICHAEL R. CONLEY, a citizen of the United States, and a resident of Brooklyn, Kings county, New York, have invented Improvements in Metallurgical Furnaces, of which the following is a specification.

The main object of my invention is to construct a reverberatory open-hearth furnace so that it will have a longer life than a similar furnace of the Siemens type in which the flow of gas and air is periodically reversed.

In the accompanying drawings, Figure 1 is a longitudinal section of my improved furnace on the line 1 1, Fig. 3. Fig. 2 is an end elevation; and Fig. 3 is a sectional view on the EMS 3, Fig. 1.

I have shown my invention as applied to that type of furnace for which I obtained Letters Patent No. 477,623, dated June 21,

1892, and for which my present improvement has been more particularly designed.

The furnace has the central open hearth O, and in the extended end walls D D are provided reducing retorts E E, whose inner ends open directly onto the melting hearth, being there preferably provided with suitable gates K. These retorts of which two at each end of the furnace are shown in this instance, are preferably inclined as described in my application filed April 17, 1894, Serial No. 507,868, and extending to the outside of the end walls are there closed by suitable doors 6. Around these retorts are flues F in communication with the melting chamber 0 through suitable passages f. These fines F lead through suitable down-take flues f, indicated by dotted lines in Fig. 1, to checkerwork B B immediately below the retorts at both ends of the furnace.

I provide inlet flues G G for the air and gas in the midst of and extending through the checker-work B B, and these lines are carried to the roof of the furnace over the melting hearth where they open out together as at g g. In the present instance these flues G G after leavingthe checker-work are .shown as carried up around the ends of the furnace to the roof, and four such dues are shown at each end, but they may be arranged in any convenient way and in any desired number.

The air and I gas are admitted through the fiues G G at both ends of the furnace at the same time and passing up to the roof of the melting chamber they mix and become ignited at g 9. After acting upon the bath in the hearth the products of combustion pass off at both ends of the chamber through the fines around the reducing retorts, containing the ore or other material to be there treated and thence the products of combustion pass down to and through passages B, B, consisting of checker-work where the waste heat is further utilized in heating the incoming airand gas. By arranging this checker-work with the communicating flues extending through it, immediately below the retorts, I am enabled to utilize the waste heat, while at its hottest, to the best advantage, and furthermore have a compact construction of furnace. In some cases it may be preferable not to carry the gas flues through the checker-work, but to bring the hot gases directly from the producer to the dues in the roof of the furnace as indicated for instance by dotted lines at g g in Fig. 1.

By the construction described the furnace is subjected to a continuous uniform heat and will last longer as a structure than where the reversing principle is used.

I claim as my invention- 1. A metallurgical furnace having a melting chamber and reducing retorts at opposite ends of the melting chamber, with air and gas flues opening into said chamber, checkerwork immediately below said retorts, and outlet fiues leading around the retorts to the checker-work, the air inlet flues extending through said checker-work, substantially as described.

2. A metallurgical furnace having a melting chamber and reducing retorts at opposite ends of the melting chamber with air and gas fiues opening into said chamber, checkerwork immediately below the retorts and outlet flues leading around the retorts to the checker-work, the air and gas inlet flues extending through said checker-work, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

MICHAEL R. CONLEY.

Images