US1121621A - Furnace for heating metal billets or ingots. - Google Patents

Description

J. R. GEORGE.-

FURNACE FOR HEATING METAL BILLETS OR INGOTS.

APPLICATION FILED NOV 22,1913.

1,121,621. Patented De0.22,1914.

QIIIQHI I MEIIM WW1; 4. fi y ilN 1T" JEROME IR. GEORGE, OF WORCESTER, MASSACHUSETTS, ASSIGNOlR TO MORGAN.

CONSTRUCTION COMPANY, OF WORCESTER, MASSACHUSETTS, A CORPORA- 'IION OF MASSACHUSETTSI.

FURNACE r03 HEATING METAL BILLETS oftmoors.

Specification of Letters'latent.

Patented nee ae, 1914.

Application filed November 22, 1918. Serial No. 802,500.

To all whom it may concern:

Be-it known that I, JEROME R. GEORGE, a

citizen of the United States, residing at Worcester, in the county of lVorcester and Commonwealth of Massachusetts, have invented a new and useful Improvement in Furnaces for Heating Metal Billets or.

Ingots, of which the following, together with the accompanying drawing, is a specification.

My invention relates to furnaces for heating metal billets or ingots preparatory to their being rolled and drawn into rods, wire, or other desired forms.

One object of the invention is to provide a billet heating furnace so constructed that the cinder, slag and molten metal which cordance with my invention.

The furnace shown in the drawing includes a casing 1 having a floor 2, the space 3 above the floor constituting the billetheatingchamber. The wall 1 at the charging end of the furnace has an opening 5 through which the billets 6 are introduced into the heating chamber 3 by means of the hydraulic ram 7. The opening 5 is normally closed by an inwardly swinging door 8. A longitudinal track 9 composed of a series of water As the billets are dropped over every alternate billet to keep the billets separated and prevent their adhering to each other after they have become highly heated at the discharge end of the furnace. I

A discharge opening 12 is provided in th side wall of the furnace at the inner end of the track 9 and a transverse track 13, which may be water cooled, is located in line with this opening. The main portion of the track 9 is slightly above the transverse track 13, but its inner or discharge end dips below the track 13 and then rises vertically at-'its opposite side to form a stop 14. The billets are fed into the furnace sidewise in a continuous series and when the foremost billet reaches the inner end of the main horizontal portion of the track 9, it drops over onto the transverse track 13 as shownin the drawing, whence it is withdrawn from the furnace by means of tongs or pushed out of the furnace through the discharge opening 12 by means of a ram or other agency acting through another opening in the opposite wall of the furnace. The stop 1 1 prevents billets from falling over the side of the transverse track 13 onto the bottom of the furnace. A series of openings 15 in the side wall of the furnace and opposite the path of the billets as they are forced along t e track 9 permit inspection of the billets and the insertion of pokers or tongs for the purpose of replacing them in proper position if they become displaced for any reason. The openings 15 nearest the discharge end of the furnace are sufliciently large to permit a billet to be withdrawn if it becomes overheated, or if it 'is desired to withdraw it for any other from its outer end so-that its inner end issomewhat below the track 9 and the path of the billets supported thereon. The inner or forward end 20 of the floor-2 is inclined downwardly'toward the frontof the-furnace so that the forward end of-the inclined portion'lies somewhat below the inner 5 or rearend ofthe floor l9 of'the combustion chamber, thus forming an opening 21 at the forward end of the floor 2. The opening'2l is normally closed by a swinging door 22.,

In the operation ofthe furnace the billets I are removed slowly 1 a continuousseries from the opening '5 to a point opposite the discharge opening- 12. The gaseous fuel and air entering through the passagewaysll and 18 are mixed and alarge part of the cominclined floor 19 conductinga large proportion of the heated gases to the enlarged space between the inclined end '20 of the floor 2 and the layer of billets; above. The

' they pass downwardly through thepassageway 23 and thence through the opening 24, "the chamber 25, the opening 26 andthe pas 30 sageway 27 on the way' to the stack. The

[chamber 25 'may be used, if desired, for

heating bricks to be used later for heating a gaseous fuel for the same or other furnaces.

opening 12- they become more. and more heated'until finally their temperature is so reat that cinder, slag and molten metal rep, from them upon the floor 2 below. I The floor 2 is so designed that when the fur- 4 and molten metal begin to dropjust forward of the upper or rearextremity of the inclin'ed portion 20 of the floor 2.- When thereis sufficient accumulation upon the inclined portion of the floor 2 to interfere with the proper operation of the" furnace, it may be raked forwardly through the opening 21, this opening being located eonvenien ly for this purpose. The inclined portion 20 of the floor 2 also'mcts to deflect floor 2 causes'the moltenmetal which drips from; the highly'heated billets'to flow by gravity through the opening 21. to a point I, in front of the furnace whenceit may be' e0 convenientlyremove'dr This is an important feature in the operation of the furnace, for'i-f the molten metalwhich drips from the billets does not leave the furnace imme diately, it has a very injurious effect upon '65 the furnace lining with which it'comes in bustion takes place in the chamberlfi, the

heated. gases then pass along the heating chamber 3 to the rear of the furnace where nace is'running normally the cinder, slagcontact, necessitating frequent repairs and,

renewals of the lining. In the. described construction, too, the'molten metal is deposited in front of the" furnace.andgtherefore at the point when'ce it 'may be most conveniently remoyedt y v While I have shown and described the details of one form of my invention, Ido not wish to be limited to such details as changes may be made without departing from the spirit of the invention; but

Having described my claim as newv and'desire to Patent is:.u H

1, Ina-billetqheating furnace, 'a longitusecure by Letters dinal track having a substantially-horizontal portion to support highly heated billets, and a floor beneath the track, the flo'orhaw' ing a downwardly and forwardly inclined portion underjsaid horizontal portion of the track to receive molten metal-dropping from the highly heated billets, there being an- :opening through the front wall of the furnace at the forwardend of the inclined por tion-of the floor to-permit the molten metal to be deposited by gravity in front 'of tlre furnace. p, I a '2. In a billet heating furnace, a longitudinal track for the billets, av-floor beneath the track, the furnace being extended forwardly beyond-the track to inclos'e a, combustion chamber, .the bottom of the combustion 1 chamber extending rearwardly to a point 3 As the billets move toward the discharge 35 between the forward endsof the track and rear end of the bottom of the combustion chamber and the forward end of the floor invention, what I being left open to permit removal of ac-. r

,cumulations on the floor.

3. In a billet heating furnace, a longitudinal track for the billets, a floor beneath the track with its 'forwardend inclined downwardly, the furnace being extended forwardly beyond. the track to inclose a com bustion chamber, the bottom of-the combustion chamber 'eiitending rearwardlyto a poin between the forward ends .of the track and floor to" conduct heated gases to the space beneath the track, and the s" acebetween the rearend of the bottom 0 the-combustion being left open to permit removal of accumulatio'ns on the floor. i v

4 In a billet heating furnace, a longitudinal track for the'billets, a floor beneath the chamber and the forward, end of the floor traclgthe furnace being extended forwardly beyond the track to inclose a combustion chamber, the bottom of the' combustion chamber extending downwardly and rearwardly to a point between,'tl1e forward ends of" the track and floor to conduct heated gases to thespace beneath the track, and the space between the rear end of the-bottom of the combustion chamber and the forward end of the floorbeing left open to permit removal 'of aecumulations on the floor.

5. In a b111et heating furnace, a casing inclosing a, space constituting a billet heating.

chamber at one end and a combustion chamber at the other end, the floor's of said chamhere being sepa'ratedto provide a cleaning opening and the end of the floor of the heat Gopleu of this yatent may be obtained for 11116 111 31 01, by addressing the Commissioner of intent;

ing chamber nearest tlie opening being in JEROME R. GEORGE.

' Witnesses:

WILLARD A. WINK,

M. OLIVE Cnoee.

Washington, D. 0."

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