US1311962A - A corpora - Google Patents

Description

J. R. GEORGE.

NIETAL HEATING FURNACE. APPLcAToN fILED MAR. 2. s.

l'atented Aug. 5, 1919.

In ZJCZOD J sm 17% faz-nc V metal from. the furnace.

UNITED STATES PATENT OFFICE.-

` JEEOME E; GEORGE, OF WORCESTEB, MASSACHUSETTS, ASSIGNOR TO MORGAN CONSTRUCTION COMPANY, OF WDR TION i OF' MASSACHUSETTS. 7

METALHEATING FURNACE.

Speoiflcation o! Letters Patct.

CESTER, MASSACHUSETTS, A. CORPORA- Patented Aug. 5, 1919.

Application filed March 21, 1916. Serial No. 85,734.

Worcester, in the county of Worcester and Commonwealth of Massachusetts, have invented a new and useful Improvement in Metal-Heating Furnaces, of which the following is a specification accompanied by drawings formng a part of the same.

My present invention rclates to that class of metal heating furnaces which are de'- signed for heating ingots or billets preparatory to their 'eduction byrolling, and it has for its objects, to secure a more uniform heating of the metal, and to provide means :for the automatic dischargc of the heated These objects, among others, I acconplish by the construction and arrangement, of parts as heroinafter described, the novel features being pointed out in the annexed claims.

Referringto the accompanying drawings,

. Figur-e -1 represents a longitudinal central sectional View of a heating bodyng my present mvention.

Fg. 2 is a transverse sectional vewon furnace emthe plane of the broken line 2-'-2, Fig. 1,

the furnace walls being shown in section beyond said line.

Similar reference characters refer to similar parts throughout the different figures.

Referring to the drawings, 1 denotes the heating chamber of a furnace emboclying my invention, having an opening 2 at one end for the' adnission of the metal to be heated,said opening being closed by a door 3. The opposite end of the heating chami ,ber is provided with an opening 4 for the delivery of the heated metal, said opening being closed, in' the present instance, by a sliding door 5. The heating chamber is provided with a longitudinal track 7 extendingfrom the receiving opening 2 to the :lelivery opening 4 for the support of the metal tobe heated, in the present instance consisting of ingots 6 supported transversely upon the long'tudinal track. The lo'ngitudinal track may be of any suitable Construction which will permit the sliding movement of the metal thereon, and capable of withstanding the high temperature of the heating clamber.

In the Construction shown in the accopanying drawings the longitudinal track 77 consists of a pair of pipes, which are preferably water cooled and supported upon the transverse water cooled pipes 8. The track 7 extends in a substantially horizontal plane fron: the receiving openin 2 to a point near the delivery openng 4, w ere the track has a sharp incline, as shown at 9, leading to a lower horizontal level 10. From the level section 10 the track is inclined, as at 11, through the delivery opening and at an inclination which will cause the heated metal placed thereon to slide down by grai 'ity, and be delivered through the delivery opening upon a series of conveyer rolls 12. 'The metal to be heated is successively pushed from a platform 13 through the receiving opening 2 into the heating chanber of the furnace by means of a recprocating pusher 14:, actuated by a steam or hydraulic cy1inder 15 in the usual manuer in furnaces of this class. As the pieces of metal are successively fed to the heating chamber they .thickness of the entering piece until the sharp iucline 9 has been reached. The next advance movement of the row w'. cause the forward in ot to fall over the incline 9 and be partally 'otated in its descent until it rests in the position of the ingot to, upon the horizontal section 10 of the track. The ingot in this position is not only -otated to bringa new face uppermost, but it is also separated from the row of ingots to provide a space for the introduction of uechanical means for pushing the ingot from the section 10 upon the inclined section 11, where it slides by gravity through' the delivery opening& into the position indicated at 17 upon the conveyer rolls 12,

ingot from the section 10 of 'the track to' the section 11 consists of a rotating sha'ft 23 having a crank section "24 adapted to Swing between the water pipes forming the track I and contact with the real' side of the metalin the position 16 to push 'the same ofi' the section 10 upon the' section ll-'of the track. Therotating sha'ft 23 carries upon' one of its-outer encls' a' sprocket wheel by which the shaft is rotated by an endless chain from *any convenient source of power. The crank section 24: of the rotating shefi: travels in a circular path 241. in the direction of the arrow 242 heneath the row of ingots 6, but its path of 'travel is cuthy the plane of the section cof the track so that the crank section 24: in its rotation will I pass beneath the horizontal row of ingots but will contact with the rear side of the isolated ingot 16. The crank section 24 therefore forms a rotating member which in its .sweep above the section lOof the track wipes the ingot 16` on to the incline section 11'. This rotatingmember is eli'ective in,

pushing the ingot 16' oniy through a small arc ofits travel. During the remainder of its movement the rotating member passes entirely. below the track and is only eiiective in delivering an ingot which has previously been moved by gravity upon the section 10 j of the track, resulting from the admission of a new ingot' at the receiving end of the furnace. one of its outer ends a short arm 26lconnected hy a link 27 With an arm 28 of greater length than the arm 26 and attached to a rocking shaft 29. The rotation of the shaft 23 will therefore impart a rocking motion to the shaft 29. The shaft 29 carries an arm 30 connected by a link 31`wit1i the slicling door 5. At each rotation of the shaft 23 the sliding door 5 which Vcloses the delivery opening of the 'urnace will be raised to pe'rmit the discharge of an ingot upon the conveyer rolls 12, and the movement of the rocking'shaft 29 is so timed with reference to the movement of the crank 2% that the door 5 will he raised during the passage of the heated ingot'through. the

delivery opening.

By properly timing the rotation of the cranh 24 and the recprocatng movement of .the pusher 14 in intrcducing a .new ingot to the iurnace, the relative time during may` therefo'e be T he rotating shutt 23 carres upon which aningot isolated from the row is allowed o rest upon the section lOof the es i track car be determined. The amount of I be'determined 'by the regulation of the temperature in the heating c amber and the fre- 'heat to n 'lich eachingot is subjected -may quency at which' new ingots are introduce& r

to the furnace. 'The action of the furnace rendered automatic i through the' control ofits temperature and by the movement of its charging and deiivering mechanisms; The period of dweli of the ingot upon the section 10 of the track accomplishes a more' uniform difl'usion of heat, .for the reason that the'partial'rota y ti'on of-'the ingot over the incline 9 presentsgo new sides to the incoming Currents of 'gaseous fuehand by the separation of the ingot' from the row of ingots upon the track '2', a-

free ..access of the heating medium ,is Secured V to 'all sides of the ingot. Bycontrolling the period of transition through the furnace as well as the temperature of the heating chain her, uniformity of heating is Secured and 'the entr'e operation of heating is controlled by mechanical means, efl'ectng a great saving in the cost of labor and avoiding the dis: A

comfort to workmen incident to manipula tion of heate'd metal in. furnaces of this class.

justa ble, in thepresent instance bysupporting; the shaft in'bearings projecting 'from The 'shaft 23 is prefejrably ertically ad-` plates 32 adjustably attached by bolts 33 to nlatos 331 on the side walls of the furnace. The plates 331 are 'provided with ribs 332 to :support wedges 333 on which the 'plates 32. rest One of the plates 32 also serves to'.

close an opening 34. in one ofthe' side. walls of the' furnace, of sufiicient size to allow' the crank 24: to be brought into alinement with the opening 34 and7iiserted into or removed from the itu'rnace. The shaft 23 is hollow throughout its length and is supplied 1 with a current of water therethrough in order to protect it fromthe intense heat of' the furnace. `The floor of the furnacjer is preferably hoppr shap'ed at 35 immediately beneath the sections 9 and 10 of the track,

for the purpose of conducting the slag to a slag pit 36 which is loosened bythe agitation of the ingots as they are moved over-the sections 9 and 1,():

I claim;

1. In a furnace of the class described, a heating chamber having a delivery opening;

continuous row of in'gots along said track, a horizontal support for an individual ingot on a lower level than said track,` an inclinecl track leading from said horizontal support to said delivery opening, a door closing the delivery o eniig, means for moving an ngot from said. orizontal support to said inclined i2o a longtudnal track means for advancing a e of a door cosing said delvery opening, an

nclined track leading to said del've'y Opening over which an ngot is dischargec fron the furnace by gravty, mechanisn for movng an ingot onto said 'clinedvtrack, mechanism for opening the door of the delivery opening, and means for operatvey connect:

ing said door opening mechansm and' said ingot moving mechanism to insure their conjoint; action. D

Dated this eleventh day of March 1916.

JEROME R. GEORGE.

Witnesses:

RUFUs B. FOWLER, PENELOPE COMBERBACH.

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