USRE10481E - X a avon - Google Patents

Description

3 Sheets-Sheet 1.

W. J. CLAPP & T. GRIFFITHS Assignors to J. P. WITHEROW and H. W. OLIVER, JR.

GUPOLA EURNACL' Reissued May 20 v Sheets-Sheet 2. W. CLAPP- 81: T. GRIFFITHS, A581 gnors to J. P. wrTnnnow'and H. W. OLIVER, JR.

GUPOLA FURN AGE. N0. 10,481 Reissued May 20, 1884.

' 3 Sheets-Sheet 3. & T. GRIFFITHS, HEROW and H. W. OLIVER, JR. GUPOLA FUBNAGE I Reissued May 20, 1884.

APP

P. WIT

W. J. 0L Assigpors to J.

W x e I Wtrce .s-se s f r [U ITED STATES PATENT OFFICE.

WILLIAM JOHN GLAPP, or NAN'TYGLO; AND. 'rHoMA's GRIFFITHS, OF'BLAEN- all who m. it may f'concern Be it known that we',.l VI

-AVON,OQUNTY OF MONMOU'IH, ENGLAND, ASSIGNORS (IO JAMES IOR: TEE WITHEROW; AND [HENRY WM: OLIVER, JR... BOTH OF ITTS BUR G,

PENNSlZLYANIA.

SPECIFICATIONiorming 'part of Reissued Letters Patent No. 10,481 dated May 20, 1884, I 1 Original N guess, dated February-6.11883 Reissue 'N .-10,4a'2 dated Janna ry l, 1354. Application for mi ile filed April is, 18124 Patented in England March :28, 1881, No. 1.372; in France September- 27, 1881, No, 145,039; in Belgium September 27, 1881, No.1

5,846; lnxgermany September 21, 1851.. No. 18,250 in Austria. September 21, 1881,.and in Spain October 1, less arr-AM JoHN OLLI P and THOMAS GRIFFITHS, subjects ofthe Queen of GreatBritain, residing,respectively,'at Nan ityglo' andBlaenavon, in the county of Men mouth, England, have invented a new and use ful Improvement in Gupola F'urnaces; and we do 'hereby declare the following to be a fall,-

clear, and exact description thereof. I

The invention has for its object improvements'in-means or apparatus'employed in the manufacture'of iron and steel. For-this purpose we dispense with the costly, converters now in" use and obviate the danger incurred in pouring metal therefrom, together'with the, risk'ofthe metalfrnnning bacliinto the tuyeres, while by our invention we" obtain facility of manipulation, an efi'ective treatmentbf the.

metal, a cheaplyrconstiucted apparatus, and less waste than that incurred by'the use of the ordinary converter. Y

In orderth'at our saidinvention. may be clearly understood and readily carried into ef'- feet, we will proceed, aided by thefaccompanying drawings, fully to describe the same.

In the drawings, Figure-1 represents an elevation, partly invertical section, of anup- "right 'converter'constructed according to our. invention. Fig. 2 represents partly a plan.

and partlya horizontal section. Fig. 3 represents a vertical section drawn'on the line'l 1' of-Fig. 2. Fig. 4

epresents. horizontal sections drawn on the lines 2 2and 3 f Fig. '3. Fig. 5 represents a section of parts. drawn. on a. larger scale. Fig. 6 represents .a vertical section of the apparatus,showing the carriage for supporting and transporting thelower secpart, B, forming a bosh or chamber fonth'e .cirv the metal,- after'treatm'ent, being run out "impurities to be raked off the top of, the flu-id eulationl of waiter-ltherein! The steam and blast pipes D Eare. permanently-fixed in position, while the lower part, 0,-which is to receive the fluid or molten metal to be treated, is mounted .upon aframe, W, capableof being raised and lowered ,upon ifanother frame, X, provided with wheels: to run on a rail way, as

will be readily-understood; Screws Y, moving in floor-posts Z-,are' generally employed for raising and lowering the frameW andithe with'a -tap-hole', b, at'thev bottom, to permit therefrom. Another aperture, 0, fitted with a door. a, is also provided above the level of the, ,fluid metal, which .serves as a chargingaperture, and also to permitthe slag and'other or niolten metal and removed from the iconverter.' Each tuyere a is provided at its rear end with a seatior a plug'or stopper,'f, to enable the blast to be .shut offwhen required, and such plug or stopper f .is fixed to a'rod,

.f, provided with a diskorpiston, f; fitting;

a steam tube or cyli nder,-=g, so as to enable the steam, when admitted tothe back of thepis; ton f to press the stopper f to its seat; and in order to enablethe. said stopper f to be drawnbaek from itsseat when from anycause thepressureof the blast againstthe' piston f unable to remove We "carry'the rod througha stufiingbox, g", and provide the end thereof witha h a nd1e,'f by which itcan be readily pulled away from itsseat when re.-

quired. f w I The steam tube or cylinder 9 is formed of a a cove'r,'gf, and steampipe d, and is attached to a box,-g?,'to-which latteris connected an air blast pipe, 6, provided with a valve e :lower section-of theifurnace, as shown in Fig. 6. The lowerpart of the'furnace is provided 7 withltuyere's a, fixed in the side thereofiand capable of'being closed against the air-blast 0 when from any cause itis desired: to shut off.

the -ction qfpne of the'tuyeres, in which taneously from all the tuyeres, as may be re case the tube 6, connected with such tuyere, is removed from the apparatus, and .a block of wood or metal placed in position to press the valve 6 to its seat.

We are, by the means above described, enabled to send a blast of air into the metal in the furnace-section C, and to shut it off simulquired. When the stopper f is pressed against its seat at the rear end of the tuyere a by the steam acting on the back of the piston f the fluid or molten metal is prevented from running back through the tuyere, while when the steam is shut off from the back of the piston f 2 and compressed air is admitted to the box g, the pressure of the air acts against the front of the pistonf in the contrary direction to that of the steam, and thereby removes the plug or stopper f from its seat, thus enabling the airblast to enter the tuyere a..-

In the drawings we have represented the rod f as being formed of a tube with an opening, f to the box g, and we have also represented the plug f as being formed with a small aperture at the center thereof. This construction is to enable a small blast of air to enter the tuyere a when the plug or stopper action.

is forced to its seat, thereby preventing-the metal cooling within the tuyere a, such small blast having no injurious effect on the fluid or molten metal The middle part, B, of the apparatus, having a supply of water, is intended to keep the upper portion or stack, A, comparatively cool; and such part B maybe flush on its inner surface with t-hatof either the upper or lower portion of the apparatus, or with bot-h, as shown at Figs. 1, 2, '3, 4 or it may be caused to project somewhatinto the interior of the apparatus, in which case it will serve as a ledge" to catch the slag and other solid impurities boiling up out of the fluid or molten metal.

The lower part, C, being mounted on a frame capable of being raised and lowered, as before described, cau be raised into position under the upper parts, All, and lowered away there from and removed, and by being fitted to run on rails it" may be readily conveyed to the mills, or to other desired position, and to the repairing and drying shed when required and in order to facilitate such adjustment in position for use and removal of the lower part, 0, we cause the air-blast tube a to lit and slide in and out through stufling-boxes e, attached to the tube E; and we form the steam-tubes (I with flexible parts d, capable of beingconncctcd and disconnected with the other part or parts by means of union-joints, as will be readily understood. Instead of forming the movable lower part, 0, of' the apparatus to fit closely up against the middle part, l, it may be formed and arranged to rise up concentrically a. short distance within the upper portion or stack, A, and to leave an annular space between the plug or stopper and during the short period ofits two, as will be readily understood, by which means the necessity for closely fitting the parts is avoided, andthe slag-and other solid impurities boiling up from the fluid or molten metal are discharged over the edge of the vessel C, and fall down through the space-between the two parts, a suitableaperture, c, fitted with a door, 0, being provided. .as before described, above the level of the fluid or molten metal, to serve as acharging-aperturc, and to enable the slag on the surface of the fluid or molten metal to be scraped off. .At 71- in Figs.'3 and 4 is shown a tapping a mode of working the same by meansof a screw, 1', working through a yoke, -j. I

The apparatus herein described maybe employed in the manufacture of steel and homo geneous metal, or in treating fluid molten metal for other purposes.

It is admitted that hydrocarbon-burners having concentric pipes and nozzles capable of axial ad ustment to regulate the relative volumes of air, steam, and oil, andto shut 0d the flow of either at will, are old. It is also admitted that tuyeres placed above the level of the bed of a furnace, for supplying two or more gases thereto through interposed fines. are old, such tuyeres being so constructed that the parts are capable. of relative adjustment to regulate the relative volumes of the gases or to shut oft the flow of either at will. It is also admitted that a cupola melting-furnaee havingblastbox and tuyeres and slides placed in the box for regulating the admission of air to the tuyeres, has been devised; but such furnace is not for treating molten metal, the slides are not capable of acting as stoppers to prevent the flow of molten metal through the tuyeres, 'and the tuyeres are arranged above the cinder-tap. It is also admittcd that it has heretofore been suggested to introduce dephosphorizing agents into a furnace laterally by tuyeres, or by narrow oblong and horizontal. slits, and that the outlets of suehtuyeres or conduits may be narrowed or widened by conical or cuneiform stoppers or mouth-pieces, It is also admitted that a Bessemerconverter has been provided with an outside receiver for containing carbonaceous matter, which receiver communicated with the converter bvan opening provided with a solid plug at its outer end capable of being opened by a screw-stem to admit the molten metal to the receiver, so that the carbonaceous matter might bc'iguited and generate gases. \Ve do not claim such construction, for the reason that it is an ordinary tipping converter, provided with a wind-box and ordinary pneumatic tuyercs without stoppers,

and is not capable for use for the purpose and in the manner that our converter is used.

Having thus described the nature of our said invcntiomand the mode in which we carry the same into ell'ect, we would have it understood that what we claim is- 2. The comb'nation of the "e'ssel 0, having 1. In a cupol'a-furnace, the combination of a bottom section or'vessel having a tuyereopening and external blast and steam chambers, anda plug provided with a stem and a piston fitted in said chambers, with a'pipe for admitting steam in rear of thepiston for forcing theplug intothe tuyere-opening, and; anair blast pipe-"leading into the chamber in front of said piston, for removing the plugfrom' the tuyereopening and admitting air through the latter into the bottom section, of .the furnace, substantially as and for the'purposes described.

the tuyeres a, extcrnal air chamber,.-g and vertical pipes e leading into .said chamber,-

and the stationary air-pipe E, having bottom. .openings for the reception of the pipes e, and

- valves for closing said openings, ,with the shaft of the furnace, and means. for elevating andtransporting the vessel 0, as and for the purpose set forth.

3. The combination of the vessel 0, having tuyeres a through its sides, external aircham-' her, g, attached to thevessel, stopper f, and

hollow stem f, communicating with'both airchamber and tuyere when the tuyere is closed -by the stopper, substantially as and for the purposes described.

4. A cupola-furnace or converter having a removable lower section or crucible, tuyeres in said lower-section .below the metal-line, a

blast-pipe, detachable connectionsbetwee'n passage of the metal therethrough', substansaid blast-pipe'and tuyeres, and means for simultaneously closing the tuyeres againstjthe tially as and for the purposes described.

5. A cupola-furnace orconvert'erlhaving a removable lower section or crucible provided with tuyerjes in its sides, a blast-pipesupported onthe fixed section of the converter, de-

, tachable connections between said blast-pipe andtuyeres, and means for closing the open-- ings of the blast pipe when the connections poses described. v 6; A oupola-- furnace or converter. having tuy'eres fixed in its sides below the metal-line, fa blast-pipe, and external air-chambers fixed to it's'sides, with which the tuyeres communicate and from which they receive the blast, .in combination with plugs, stoppers or valves situate in said chambers, and means for simu1- .taneouslyoperatinglthe stoppers from the outside to open orclose the tuyeres'at pleasure, substantially as and for the purposes described.

'Z. A cupola-furnace or' converter having a tuyere or tuyeres, and an external air chamber or'chambers with which I the tuyere com- --n1unicates and from which it receives the blast,

' are'removed, substantially as and for the purin combinationgwith a plug, stopper, or valve to close the tuyere toprevent the escape of the'molten metal therethrough, means for ()P- crating the stopper, and a passage for admitting a small stream of air through the tuyere when the stopperis closed, substantiallyas and for the purposesdescribed;

" 8. The combination of afixed converter'or cupola-furnace for treating molten metal, havin g all of its pneumatic Jtuyere's provided with plugs, j stoppers," or valves, and organized means for seating-and-unseatingsaid plugs,

stoppers, or valves simultaneously duringthe operation of the converter:- substantially" as described. 7

In'testimoriy whereof we have hereunto set our-hands this 25th day of February, A. D 1884.

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