US966285A - Reverberatory furnace. - Google Patents

Description

` 'Toallwhom fit'mayconcem.- Beit Iknown that I, FREDERICK W'. VVINK-f l LER, a citizen of the United States, residing E at-Hancock, in the 'State of Michigan, have .f-invented new and useful Improvements in l`Reverberatory Furnaces, 4of which the following isa specication.

This invention -relates to improvements in `re verberatory furnaces, the objects of the, 4 l0.

r reduce `the disintegrating actionof the slag upon the walls thereof and the amount of relining of the walls W en worn, to increase the str en'gthiand durability ofthe furnace and reduce" the liability ofinjury thereto by, y expansion and contraction, and to provide Fig. L Lfijs a' vertical cross section on the line 3.5..

. `one' .of the inlets, showing the door swung v-open to expose the peep'hole.

'g '40 Referring to *thel drawings, l `designate-s berformed by uit, bottom wan e, Side Wang .brick or other refractory material.

UNrrED sra [FREDERICK W. WINK'LER,

or HANCOCK, MICHIGAN.

REVERBERATORY FURNACE.

invention"i .being to increase the area of the heatingportion of the furnace chamber, to'

repairs necessary to keep the furnace in working conditien,. to rovide for the ready of Fig. 1. Fig. 5 is a longitudinal section through the lire box showing a. modification. Fig.- 6 isau outer, perspective view of the furnace base and 2, the smelting cham- 4 and arch or crown. wall 5, .which walls rare built up inv the'usual manner of lire The furnace is provided atjits forward end with any suitable type of fire box 6 withi-nwhich is arranged a grate 7 and from the rear of which rises the'usual bridge wall 8. The fire box body and bridge wall are formed of cement or other suitable material, the bridge wall having embedded therein `brace beams 9 of angle iron or other suitable material which are connected with smilarbrace beams 10 at the rear ofthe Specification of Letters Patent.

Patenten Ang. 2, 191e.

Vimputation inea November s, ieee. -serial No. 526,577.

furnace by longitudinal reinforcing and tie rods l1.

The base of the furnace is .stayed and reinforced by outside brace walls l2 of concrete or -other similar material, through Vwhich therods ll extend, and in which brace walls are embedded angle metal stays .13 inclining upwardlyq and outwardly andreinforced by outwardly and downwardly -inclined 'braces 14, formingtrusses to firmly support the walls. Between the sides of the furnace bed and the brace walls are arranged cushioning walls or layers 14 of asbestos, magnesia or other suitable more or less elastic fire-proof material, which permit the sides of the bed to expand and contract to a determined degree without liability of injury of cracking of the bricks composing the same. i

In the ordinary construction of reverberatory furnaces, the side walls of the furnace chamberv are vertically arranged and the lower portions thereof are subject to disinte- I gration caused by the intense heat and chemical action of the -adhering slag, as a result of which .the inner faces. of the walls are eaten away. To maintain the walls in proper working condition, it is necessary to reline them at intervals with a fire-proof plasticv composition. When however, the

'walls are disintegrated and weakened to a certain extent, it is necessary to shut down the furnace and rebuild the walls, otherwise caving 1n of the same 1s liable to occur through the excess weight of' the upper ends of the walls.

The primary purpose of my invention, in addition to strengthening the walls of the furnace, is to provide meansby which the disintegrating action of the slagen the side wallsis reduced, the necessity of relining the same at the ordinary frequent intervals obviated, the4 heat-ing area of the furnace chamberincreased, and certain of the ore inlets arranged soas to be employed for theintroduction. of the material and tools in relining, so that this work may be more readily and easily accomplished.

It will be observed that the bottom wall 3 of the furnacechamber is curved on a suitable arc, while the sidewalls et curve or incline downwardly and inwardly thereto. As a result of this form and arrangement of the walls 4, the slag is shed to a greater extent and a reduction of the disintegrating action secured. When however, disintegration occurs to such an extent as to weaken the walls, their angle of inclination prevents' colla se thereof, as willbe readily understood? The furnace is provided with one or more central rows of ore feed inlets with. each of which communicates a hopper 16 having a controlling valve or ate 17, and with' longitudinal side rows of inlets 18 and corresponding rows. of hoppers 19 provided with lsimilar controlling valves or gates :20, the inlets 18 being arranged immediate above the inner faces of the'upper ends of the side walls 4 so that the ore entering therethrough will slide down said walls and tend to free or dislodge'the slag adhering thereto on its assage as well as to revent all of the heat of the slag from being trans mitted to the walls. The contact of the ore 4with the slag also sets up a suiiicient'chemical reaction to reduce the chemical action of Ithe slag upon the-wall, thus retarding the burning out and disintegration of the latter. Each inlet 18 is provided with a peep hole 21 through which the progress of the sinelting operation at the respective'sides of thefurnace may be observed, which hole is normally closed by a hinged door 22. The holes are of such size as to readily permit of the introduction of the plastic material and tools used in relining the walls ywhen occasion requires, obviating the necessity 'of 'breaking down a portion' of the'furnac'e in of the bottom of the furnace chamber, as in shutting down the furnace for repairs, etc.

The brace walls 12 are formed with shoulderswg'ainstwhich abut I-beanis 26, thebase vportions of which areextended inward to forr'n su ports for slmilar beams 27,.':1 pair of such cams bemg arranged at each side of y the furnace.

The inner' beams 27` receive and abut against the side edges of the archl for crnwngwall 5 and serve as supports to prevent outward movement or displacement thereof; Each pair of beams 26 and 27 :is adapted for relative adjustment to compenceases sate for expansion and contraction 4of the arch. To this end an adjusting screw v28 passes through the outer beam 26 and is provided-with a washer29 to bear against the same and a nut 30 to engage the washer, the inner end of the nut being formed with a head. 31 'bearing against the beam 27 and adapted to 'be secured in adjusted position by a nut 32. By means of these connecting screws or bolts the beams 27 may be adjusted in and out to relieve the arch of excess. pressure or' to bear with greater forceagainst 'the sa me, usoccasion may require in the eX- pansion and contraction of the arch;v

In Fig. 5 the bottom of the' lire-box is built up to ahigher level and-.a traiisverseseries of oil burners 33 employed in lieu of the grate,

Having thus described my invention, what l claim is l. VA reverberatory furnace embodying 'a smelting chamber, a .base therefor, bracing walls' on theouter sides of Athe base, and cushioning linings between said base and bracing walls. y

2. A reverberatory 'furnace embodyirng-4 a.

ibase, a smcltinu: chamber, bracin wall'son' the outer sides of the base, rein orcements embedded in said walls, and cushioning linings between the base and walls.

3. A reverberatory furnace embodying u;

base, and a crown wal-l, outer'beams'supg ported by the base, inner beams bearin against the side edges of the crown wallan v movable relatively to saidouter beam, and adjusting connections between the beams.`

4. A reverberatory furnace having asmelting chamber embodying a base, an arch', side` walls incl'inling upwardly and outwardly from the base to the sides of thee-arch, and feed openings formedA in" thearehl adjacent the upper ends ofthe inner'faces of thn side' walls.A 5. A reverberatory furnace havingasmelting' chamber embodying a bottom wall,"an

arch, side walls inclining upwardly and outwardly from the bottom walls to the sides of fthe arch,` said arch' being provided with inlets adjacent the upper ends ofthe sidewalls,

said inlets having openings therein, and clo sures for said openings. In testimony whereof I affix my signature in Apresence of two witnesses.

FREDERCK w. WINKLER. Witnesses:

C. C. HrNEs, J'oHN LpFLE'rcHum los

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