US683375A - Reducing-furnace. - Google Patents

Description

no. 633,375. Patented sept. `24, |901.

C. BISHOP; Y REDUGING FURNACE.

(Application Bled Jan. B, 1901.)

mi wams Pern: cov. Mofo-umm. wAsmunTou. n c.

' -Ar'ronNErs 3 Shasta-shea: 2.

Patnted Sept. 24, |90I.

c. rsHuP. REDUCING FURNACE. (Application mea un. a, 1901.)

Hlllf 1' z wams Pneus no worouwo.. Asmumcu u c (Ilo Model.)

Pmmd saptl 24, lem.

4c. mslm?. i REDUGING FUBNAGE.

(Aspnmion am nu. s. 1901.)l

3 Shasta-'Shed 3.

(lo Model.)

Ano/mns :n: co. moroumo.. wumsmu, D. c.

""NITED STATES PATENT OFFICE.

CHARLES BISHOP, OF SAN FRANCISCO, CALIFORNIA.

REDUCmcUFURNACE.y

SPECIFICATION forming part of Letters Batent No. 683,375, dated September 24, 1901.

Application led January 3, 1901. Serial No. 41,980. (No model.)

T0 a/ZZ whom it may concern/.-

Beit known that I, CHARLES BISHOP, a citizen of the United States, and a resident of San Francisco, in the county of San Francisco and State of California, have invented a new and Improved Reducing-Furnace, of which the following is a full, clear, and exact description.

This invention relates to improvements in furnaces for reducing or smelting metal-bearing ores; and the object is to provide a furnace of this character in which a great heat may be maintained to rapidly separate the metals from their ores.

I will describe a reducing-furnace embodying myinvention and then point out the novel features in the appended claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a perspective view of a furnace embodying myinvention. Fig. 2 is a vertical section thereof. Fig. 3 is a section on the line 3 3 of Fig. 2. Fig. 4 is a section on the line 4 4 of Fig. 2. Fig.V 5 is a section on the line 5 of Fig. 2. Fig. 6 is a section on the line 6 6 of Fig. 2, and Fig. 7 is a section on the line 7 7 of Fig. 2.

The furnace comprises an outer wall 10, of suitable masonry-such, for-instance, as brick or stone-and a lining 11, of fire-brick. Between the fire-brick lining and the outer wall at the four sides and at the top sand 12 is placed to prevent the cracking of the walls or lining by contraction and expansion. Arranged at opposite sides are fire-boxes 13, in which grates 14 are arranged, and below the grates are the ash-pits 15. The fire-boxes are provided each with a suitable door 16, while each ash-pit has a door 17. The side walls and the front and rear Walls of the lining are provided with fines 18, through which the products of combustion may pass and discharge through the uptake or chimney 19.

Arranged in the furnace are arched supporting-plates 20, upon which the ore under treatment is designed to rest. These arched plates are provided with openings, through which the metal separated from the ores may pass. This metal falls into inclined runways 21, from which it discharges into a settlingtank 22, arranged in the forward portion of the furnace. In the front wall. 0f the furnace and forward of the settling-tank 22 is a bullion-pot 23, which communicates at the bottom with the settlin g-tank through an opening 24, and the bullion may be drawn out of the bullion-pot through an opening 25, this opening 25 of course beingnormally closed by a` suitable plug. The slag floating on the top of the metal in the crucible or settling-tank will discharge through an opening 26,leadin g from the top of the tank 22 and out through the front wall. The ore to be treated may be passed into the furnace and onto the supporting-plates 20 through an opening 27 in the back Wall of the furnace or through an opening 28, leading into the chimney-flue. These openings 27 and 28 are provided with suitable doors 29 30.

In operation any desired fuel may be used. The heat will pass upward through the ore supported on the arched plates, and this intense heat will reduce or melt the metal, which will ilow downward into the settlingtank, the bullion or heavy metal discharging from the bottom of said tank into the bullionpot, and the slag, which rises to the top, will be floated off through the opening or pipe 26. Over the settling-tank 22 is an arch 31, of fire-brick or the like, which will have a tendencyto force heat downward upon the metal in said settling-tank.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A reducing-furnace, having fire-boxes at its opposite sides, a series of arched plates arranged in the furnace and rearward of the fire-boxes, the said plates being perforated, inclined runways below the plates, a settlingtank for receiving material from the runways, and a bullion-pot having connection with the tank, substantially as specified.

2. A reducing-furnace, having fire-boxes, a series of arched perforated plates in the furnace rearward of the fire-boxes, a settlingtank forward of the plates and below the plane of the plates, an arch over the tank, and a bullion-pot communicating with the tank, substantially as specified.

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

' CHARLES BISHOP. lVitnesses:

GEO. E. Onsrnv,i

D. J. HALLOBAN.

IOO

Images