USRE17717E - Apparatus pob - Google Patents

Description

H. E. M CRERY ET AL J 24, APPARATUS FOR MANUFACTURING BIIIETALLIG BILLE'I'S R 5 Sheets-Sheet 1 Original Filed June 23, 1926 H. E. MccRERY ET AL June 24, 1930 Y H. 1 W WEE d W 5 m s 7 3 5a.. 7 #5. 1 H I ew R ma m w n B 5 C 6 T. 2 m w A m .u m w ,m B 9 h m m Q KM. .mm M J Y- m d U w u $3 m v Wm an m a a M m w n F D s T m A w A H. E. MQCRE'RY AL @June 24, 1930 APPARATUS FOR MANUFACTURING BIMETALLIC LETS Re. 17,717

. a 5 Sheets-Sheet 3 Original Filed June 25 1926 Reiuued June 24, 1930 UNITED srArE-s PATENT-OFFICE nanonn a nocmr am) man 1:. .rassm, or none, rmmvaxn; amorous ro oorrnawnm swam. comm, oronassron'r, mrmvma, a oonroaa'non O1 PINNBYLVAN IA APPARATUS FOR BmITALIiIO 3m I Original in. 1,141,784, dated may s, 930, Serial No. 119,639, filed June as, me. Application to:

reissue filed April 18, 1980. Serial Io. 444,847.

This invention relates to an apparatus for and similar ingots of varying cross-sectional- '5 shapes and for casting cop r or. similar 'ja'ckets around such ingots. n a copending application for molding method and apfieratus therefor, Serial No. 240,311, filed cember 15, 1927, which application is a division of the present application, we have described and claimed a molding method and apparatus particularly adapted foruse in connection with the invention disclosed and claimed in the present application. I v 16 In the metal industries it is the usual p tice to form bi-metallic billets by casting a jacket of cop 1 about a bar or ingot of steel 'or the like, at considerable di culty has been experienced incau'sing an intimate co- :0 hesion of the copper to the base bar due to the formation of oxids on the surfaces of the bar before the co per casting operation can be completed. n carrying out the usual 7 operation a base bar or in mold, the inner walls of to and spaced from the surfaces of-the base bar, and the molten 00 per is poured-around the base bar. It has 11 found diflicult .to properly retain the base bars centered with-. in the molds, and accordingly the copper j acketing of the finished: billets usually is o uneven thickness. According to the present practicetherefore many of the billets must be discarded as imperfect. H

the base bar into the mold and pour the molten metal therein. A. further object is to provide a method of thecharacter outlined wherein the base bar is heatedto a relatively high temperature racerly heated.

' A further object is to provide an apparatus 'port the. closure for the latter durin the heating opferation, means bein provi ed for lowering I thebar into the mol tion is accom lished.

ot is placed in a" w ich are parallel.

It is an important object of the present ina to exclude air from an :and subsequently to immediately introduce substantiallyput of contact with the atmosphere to minimize the formationof oxids on the surfaces of the base bar and to immediate- 1y introduce the base bar into the mold and pour the molten metal therein the transferring of the base. bar from-the heating means to the-mold being accomplished without br ngin the base ar into substantial contact wit the atmosphere.

' 'A further object of the invention is to provide a novel form of apparatus includinga closed heating unit havin means for an porting a bar therein an adapted to be brought into vertical alineme'nt with the heating means therebelow to directly receive the bars after they have been propof the character just outlined wherein the mold is provided with a movable bottom section adapted to be moved upwardlyto supase bar in the heater and to form a after the heating opera- A further 0 ject'ia'torovide novel means for excluding air from t e bar as it is transferred from a heating unit to a mold to mini.- mize the formation of oxids on the surface of f the bar.

A further objectis to provide a noveLform of air excluding means comprising a member adapted to be arranged between a heatin unit and a mold and adapted to be clam in position about the per end of the latter to retain the heatin a bar as it is transferred from the heating unit to the mold, the air excludin means be ing adapted to open to permit-t e molds to be removed. a

A further object is to provide a heat e xcludin device of the character. referred to end of a heating unit and tobe clamped around the u perend of. one of the molds to exclude air om the latter, the means for transferring the bar from the heating unit to the mold being adapted to create a partial vacuum to reduce the amount of air in conmovable mol I which is adapted to be carried by the lower v a jacketing of tact with the bar after it is placed in position in the mold and before the mold is moved.

- A 'further objectis to. provide novel'means for centering -the'=base bar in the heating umt to provide even heating of the .bar, and to properly center the, bar in the mold whereby uniform thickness. may be cast around the bar. "1'

Afurther object is'to' rovide a novel form o of mold having movab e upper and lower receivethe molten metal and to provide means ends provided .with inwardly projecting -cen-' terin means adapted to enter center openings ormed in the bars.

A further object is to provide novel melins for forming center openings in the bars.

. A further objectis to rovide a pa1r of ,drills adapted to be move into contact with the bar to provide the center opemngs referredto while the bar is ma horizontal position, and to provide means for swmglng the bar to a vertical osition to adapt -1t for m 'sertion in the mo d.

A further object is to for removing the molds the heatingunits to the casting furnace to iprovide novel means I for discharging the finished billets from the molds and returning the latter to the1r operative positions beneathithe heating un ts.

Other objects and advantages of the invention will become a parent during the course of the following dbscri tion.

In the drawings we ave shown one em- .bodiment of the invention. In the showing:

Figure 1 is a plan view of the apparatus,

Figure 2 is a side elevation of the same,

Figure 3 is 'a side elevation of the ingot elevating device,

Figure 4 is an end elevation of a somewhat 0 similar device employed when discharging the billets from the molds, 1' Figure 5 is a central vertical sectlonal view through a plurality of molds, heating units and associated elements, parts being shown in elevation,

Figure 6 is a detail sectlonal v1ew through the upper end of one of the molds,

T Figure 7 is a plan view of one of the molds, Figure 8 is an enlarged plan view of the center hole forming means and associated eleents arts hein shown in section, -Figin e 9 is a side elevation of the same, parts being omitted,

Fi ure 10 is a detail view of the mold liftin evice, 7 Figure 11 is a front elevation of one form of heat retaining means, parts bemg broken awa Figure 12 isa lanviewof the same, g Figure 13 is a ront elevation of a mod fied form of heat retaining device,

Figure 14 is a plan view of the'same, and t Figure 15 is a detail sectional new on the line 15-15 of Fi re 13. v i v Referring to Figures 1 and 2 the numeral pair of standards 11 is 7 "charge end of the conveyor and are adapted in slots 18. Any suitable means may be om points adj acent'- toward the 10 designates a gravity or other conveyor adapte to convey the base bars or ingots to the center hole forming means. As shown, a

arrangednear the dis- .to support rolls 12 and 13. The roll 12 is provided at opposite ends with stub shafts 14 rotatable in fixed bearings 15 carried by the standards 11, while the roll 13 is similaryprovided with stub shafts 16 mounted in arings 17 which are vertically movable ployed for efl'ecting the vertical movement of the roll 13 for a purpose to be described. The rolls 12 and 13 form supporting means for each successive base bar or ingot 19, as shown in Fi e 9.

Eac standard 11 is preferably provided with a horizontal sup ort 20' ro ecting outwardly therefrom an providEd with guides 21. A motor 22 is mounted to reciprocate in the 'des of each support 20 andfeach motor 1s a apted to drive a countersink 23 or, similar drilling device adapted to be moved into contact with the ends of the ingots to provide center holes therein. The rolls 12 and 13 are preferably placed in such a position that when an ingot of given size is arranged thereon, the axis of the ingot will coincide with the axes of the motors 22.

It-will be obvious that lowering of the roll 13 will discharge each successive ingot from the rolls 12 and 13, and a suitable conveyor a purpose to be described. The free end of the' receiver 26 is normally a stationary post 32. Means is provided for raisin the ingots toa vertical position by swinglng the receiver 26, for a purpose to be described. As shown, a cylinder 33 is provided with a piston 34 secured to a piston rod 35,and reciprocation of the piston is accomplished by the introduction of com.-

secured to the sha 27, and this arm is pro-' vided in. its op o'site end with a slot 40 through which t e pin 36 projects. It will be apparent that introduction of pressure 1nto the right end of thecylinder 33, as

viewed in igure 3, will draw the piston34 left, thus swinging the arm39 to the dotted line'position and elevatin the receiver 26 to a vertical position, the ingot supported upon Eressed air onopposite sides of, the piston in the receivercontacting with the stop 31 to limit its movement.

After the ingot has been elevated to a vertical position, means is provided for lifting the ingot and inserting it into one of the heating units to be described. For elevating .the ingots, we provide an electro-magnet 41 suspended from a cable 42. This cable may be connected at its upper end to a suitable carriage movable along an ordinary overhead trackway (not shown) While we have described the use of an electro-magnet, we prefer to use such a lifting device merely as a matter of convenience and may employ'any suitable lifting means as will be apparent.

Referring to' Figure 1, the numerals 43 and 44 deslgnate a pair of batteries of heatin units suitably supported in frames 45 a su stantial distance a vs the floor, as shown in Figure 5. These batteries may be duphcates of each other, or may be formed in any desired sha e accordin to the cross sectional shapes oftiie ingots. Figure l, we have illustrated the heating units 43 as adapted to receive circular ingots, whilethe batte 44 is adapted to receive ingots which are ob on in cross sectional shape. 1 Aside from the di ference in cross sectional shapes, the batteries 1 43 and 44 are identical, and only one battery. need be described in detail.

Referring to Figures 1 and 5, each battery 43 and 44 consists of a plurality of heating ated as a whole which is surrounded y a water jacket 47,

- water being supplied to the jackets through any suitab e type. .Each unit 'is with a cover hinged at one S] e to the vided foreach of the heatingunits.

a manifold 48 and drawn 03- from the jackets through a manifold 49. Each unit is provided with a central opening 48', and theunit is ada ted to be heated by coils 49' of rovided unit as at 51, the opposite side of each cover being adapted to be secured in closed position by a clamping bolt 52. Each cover50 is provided onits lower face with a conical central projection 53 arranged co-axial with the opening 48' when the cover is closed.

As illustrated in Figure 1, each battery 43 and 44 consists of two lines of heating units for convenience in operatin the apparatus olds designated aswill become apparent. asa whole b the numeral 54 are adapted to be brought into position beneath the -heat-.

ing units 46, ,one mold preferably being gro- - molds are preferably mounted upon what are is provide known in the art as buggies indicated in the drawings by the numeral 55. One bu for each of the molds an is mounted npon wheels 56 traveling u n rails 57. Therails extend transversely o the apparatus, as shown in Figure}, each buggy when removed from beneath its corresponding an open lower end 60. A

obviously will ing heating unit, moved outwardly with respect to each battery of heating units, along the rails 57.

:Each mold is ggovided with an axial ficeivmg opemn corres ondmg' nera in shape and sl ze to the o peni 4 3 of th e heating units. At its lower en each mold is provided with a conical depression 59 hav- [plunger or supporting member 61 1s arrange in each of the molds and each of these plungers is provided with stantially snugly} fit withinthe molds, and

centered therein. Each of the plungers 18 provided on its u per face witha conical elevatign 63 arrange co-a'xially wlththe mold, an the lower faceof each plunger is provided with a recess 64 for a urpose to be described. Each of the Jmol s is preferably of the split type com rising a pair of complementary sections w ich may be separated to permit the finished billets to be removedtherefrom. The split feature of the mold 1s m itself old and well known and no detailed description thereof is believed to be necessa Each mold is adapted to be brought into a conical face 62 adapted to seat against the surface 59. The plungers 61 sub axial alinement with its correspondin heata plunger or piston 67 secure to the lower end of a piston rod 68, the upper end of which is adapted to be received in one of the recesses 64.- -M eans (not shown) is provided for introdu'cmg compressed air or other fluid into the lower ends of the cylinders 65 to elevate the pistons 67 as will be apparent. When pressure is released from the lower ends of the cyhnders, the piston rods 68 will assume rts for the ingots the position shown in the left handside' of Figure 5 of. the drawings. Thus it will be apparent that'when the pistons 67 are withdrawn the buggies 55 are freely' movable along the rails. From the drawings it will be apparent that each mold, when in operative pos tion, is arran ed beneath and adjacent its corresponding eating devicewhereby a bar lowered from a heatin' device into the mold W111 not come into su tantial contact with the atmosphere, thus minimizing the formation of oxids'on the surface of the bar.

However, we prefer to rovide means for ex-' eluding air from the ar-duriiig the transferrm scribe ,later. It will apparent that when one of the" pistons 67 is lowered to normal position, the

plunger 61 associated therewith is adapted tooperation, this means being de-' support the ingot within the corresponding mold, andzmeans is provided for closmg the 11 per end of'the mold as shown in detail n igures 6 and 7. As shown, a cover69 1s provided'with openings 70 through which project ears 71 carried by the upper end of each mold. These ears are provided with openings 72 for a purpose to be described. A screw .73 projects through each cover 69 and is provided at its lower end with a. conical extremity 7 4 adapted to engage within one of the centerholes of the ingot as shown. An operating handle 75 is adapted to rotate the screw 7 3 as will be apparent.

After one of the molds is closed, as shown in Figure 6, it is moved from beneath its cor-- responding heatin unit by rolling the bu gy Q 55 along the rai s '57. The mold is t en adapted to be-picked up by an elevating device 76 which comprises a pair of depending arms" 77 having hooks 78 at their lower ends. These hooks are arranged substantiall horizontally and are received in the o emngs 72 whereby the mold may be lifted an the'coverr 69 maintained in closed osition. A suspension member 79 (see nected to wheels 80 which are ada ted to run uponrails designated as a whole y the nu.-. meral 81. The suspension member is provided with a transverse pin82 which supports earns 83 adapted to be operated by a lever 84. The cams are adapted to contact swung in one direction.

- normal positions on the 'on the rails 57;]

with lateral projections 85 carried by-the arms 77 whereb the latter may be elevated to lift the mold rom its buggy when the lever 84 is The track 81 is provided with-( sections 86 arranged on opposite sides of each battery 43 and 44. These track sections are adapted to permit the elevating devices to be brought in proximity-to any set of rails 57 as will be" apparent. The rail sections 86 arebroughtto f converging points 87 upon oppositesides-of,

a furnace 88 which normally maintains abody:

of metal in a molten condition, the m etal. ber ing adapted to be discharged fromthe furnace through spouts 89. From each converging point 87 therails lead Itoadditional sections 90 which serve as coolingracks for a purpose to be described. From the cooling racks the rails again converge to the point 91,

and outwardly of the point 91 rail-sections 92 V are providedfor returning the molds to their Beneath'the railfipoint .91 an additional auxiliary buggy 93 is arranged, and this buggy is adapted to roll upon rails 94. The

(lowering device indicated asa whole by the numeral 95 is arranged adjacent-the outer end of-the rails 94. The lowering device is .similar to the device previously described for felevating. the ingots to a vertical position after the center holes have been drilled therein, and" accordingly the lowering device" need igure '5) is conthe lower end of each heatin unit by buggies supported not be described in detail. Certain partsof I upon the movable section 98 may be lowered to discharge the billets upon a take-off conve or 99'-'.

Figures 11 to 15 inclusive, we have shown means for excluding air from the bar when it is transferred from a heating. unit to one of the molds. As shown the numeral 99 designates an air excluding device adapted for use in connection with one of the circular molds; Thedevice 99 comprises a rear. section 100- and a. pair of front sections 101. Pivot ins 102 connect the rear section 100 with t e forward sections 101, and the. pins.

102 extend upwardly'as shown in Figurejll for connection with the lower end of one of the heating units. The device 99 is circular as previously stated and one of the devices is arranged in axial alinement with each of the heating units. It will-be apparent that one of the devices 99 is permanently secured against pivot pins 109. The device 99 is lined with a heat resisting material 103, and in practice we prefer to provide a lining formed of asbestos or the like. It will be obvious that the device 99 IIIIIStIQQx-OPGIlGd to permit a mold toqbe withdrawn therefrom, and accordingly the forward sections 101 are adapted to swing the outwardly to permit the mold to beremoved,

the outward swinging of the sections 101. be ing permitted by the pivot connections between the sections 100 and-101. In Figure 5 of'the drawings .we have shown two of the heat retaining devices 99 arrangedin operatlve posltion, another of these devices being shown open at t lft side of Figure 5, to permit the mold to-be withdrawn. It will be obvious'that'when one of the devices is closed,

it is-clamped firmly about its corresponding mold to exclude air therefrom. Means are. rovided for clamping the free end's'of the.

orward sections 101 together. As shown, one of the sections 101 is provided with a lug 103 having an arcuate outer face 104. A

locking member 105 is pivotally connected to the free end of the other section 101 by a pin- I 106, the lock being retained in position by .a

I cotter pin or other fastening device 107. The

locking device is provided with an inner arcuate recess 108 having a wall arranged eccentric to the pin 106 to engage the Jarcuate face 104 of the lug 103. Thelocking device is ISO . use inconnection wit pro ect upwardly as shownin F' formed in the free on lower 7 Air is admitted into one of the cylinders 65 r provided with an operating handle 109 to permit it to be revolved.

In ,Fi res 18 to inclusive, we have shown a eat re device 110 adapted for uare molds, but it will be apparent that the device easily can be altered to accommodate an desired form of mold. The device 110 .in udes. a stationary 1 section 111st the rear thereof and movable side sections 112. The adjacent ends of the sections 111 and 112 are pivotally connected by pins or rods 118, the upper .ends of which re 13, for connection with one of the heating devices whereb the device 110 may be rigidly secured ereto.

Amovable front section 114 is hinged to the forward 'end of one of the sections 112' b a pivot pin 115. The forward end of the ot er section 112-is provided with an extension116 which projects throu anopening 117 Th d of thS'ZQCtlOIIII 1114. epro'ectmg' 'e'n -116ispr0vi e wit a ug 117' which is adapted to be engaged b an eccentric camface 118 carried. y a 100 'n meinber 119. The locking member is pivo to the free end of the section114 by a pin.

120 and is dle 121. I v 1 The operation of the apparatus is as folowsz' The ingots are preferably provided with etched surfaces whereby the copper coating to be ap lied may more firmly engage the surfaceo the t. The etching operation may be perform in any desired manner'and forms no part of the present invention. The

provided with an operating hanetched ingots are fed to the rolls 12 and 13 one at a time, and while one of the ingots is in the position shown in Figure 9 the motors 22' are moved inwardly to drill thecenter holes 24. The roll .13 is then lowered and the ingot is discharged upon the conveyor 25 which conveys it to the receiver 26. Air is thenadmitted into the cylinder 33 to elevate the receiver in the manner previously described whereupon the electro-magnet 41 is ed to pickup the ingot.

to elevate the piston 67 therein to the position shown at the ri ht side of Figure 5, the plungor 61 in-the mo d bein elevated by the piston rod 68 as thelatter is elevated. It will be a arent that the piston rod is freely mova e through the lower end of the mold to elevate the plunger, and the latter when elevated contacts with and forms a closure :for

the lower end of the heating unit. With the cover of the heating unit open, the electromagnet is moved over thehe'ating unit and lowered whereby the ingot is inserted into'the mold and supported upon the pxpnger 61. The cover 50 is then closed and lted, and it will be a parent that the conical projec tions 53 an 63 of the cover 50 andplunger 61 pro rly center the t-within the heati Heat is sup E ed b the heat co until the temperature 0 the ingot is raised to the prop? point. This operation usually requires a ut fifteen or twenty min utes, and upon completion of the heating oporation, the air is exhausted from the lower endof the cylinder 65, thus permitting the lunger 61 and the ingot to move downwardl by gravity into the mold opening 58. It wi 1 be obvious that the heati operation is carned on with the ingot su' tantially out of contact with the atmosphere whereby oxidat on is materially reduced, and upon completion of the heating :XJOIEHOII the ingot is im- 1 mediately introduc 'nto the mold. As previously stated the Inn er 6'1 fits snugly within the mold 58, ut 1s slidable therein.

The ingot is su ported on the plunger 61,

and it will be 0 vious that when the piston rod 68 moves downwardly, the plunger and the ingot will be lowered into the mold.

Downward movement of the plunger 61 forces air from the mold through the o ning in the lower end of the mold as will be 0 vious.

With thecover 50 closed, and one of the air excluding devices 99 in position, it will be apparent that the plunger 61acts to exhaust air from the mold thus reducing the pressure of air in the mold and 'rarefyin the air thus substantially eliminating oxi ation of the ingot. The air excluding devices also retain the-heat in the ingot until such time as the mold is removed 1303361111113 the copper or other metal to be poure around the ingot. The heat from the ingot expands what little air remains'inthe mold so that ver little additional 'air will flow therein a ter the heat retaining device is removed. The member 99 readily may be removed by revolving the hairdle 109 to release the cam 108 from the lug 103'; whereupon the movable sections 101 may be swung outwardl as indicated at the left side of Figure 5. t will be obvious that the heat retaining devicellO ma be operated in a similar manner, the mova le sections 112 and 114 bein' swung outwardly by releasing the lockin evice 119. After the plunger 61 is move to its lowermost position, and the heat retaining device is open, the buggy upon which the mold rests may be withdrawn from beneath the heating unit and the cover 69 applied in the manner previously described. The handle 75 is turned to cause the conical end of the screw 73 to enter the center hole 24 at the upper end of the ingot, whereby it will be apparent that thelatter is firmly centered in the mold and maintained in its central position throughout the remainder of the operation. The handle 84 is elevated to lift the mold far enough to clear the buggy whereupon the mold may be removed along the rail section 86 to one of the converging points 87. As shown in Figure 7, the cover 69 is relatively narrow, leaving the space between the ingot the moldjwallsopen,

whereupon the molten: copper or other metal may be poured into this spacefrom one of the spouts '89. After the mo 6. is filledgit may be removed to one of thecooling rack rail sec-,

tions 90 where it is. permitted to .remain until the temperature of the 00 per acket islowered sufliciently tov ermit 1t to solidify.

buggy 93 1s then moved outwar rails 94 to a point 0 posite the receiver 96, and with the latter n vertical position, the

billet is moved thereinto either manuallyor otherwise, afterwhich the receiver is lowered I to ahorizontal position and the completed poured into the mold to form the finished billet is dischargedupon the conveyor 99'.

tinuously operated to prepare the in otsfor the, casting operation, a plurality of t e heating units andmolds being provided in order that the operations may be substantially conheated substantially out of contact, wit the atmosphere after which it is immediately introduced into a mold and themolten metal billet.

In the use of the apparatus it has been foundthat the formation of oxids on the ingots .while within the heating units is su b. stantially entirely eliminated, thus permitting an intimate cohesion of the copper jacket to the base bar. Changes intemperature of.

the molds cause them to warp slightly, and this warping ordinarily affects the thickness of the copper jacketing owing to the shifting of the sitions of the ingots. With the present invention, however, the coo eration between the center pro 'ections 53 an 63 with the center openings 0 the ingots causesthe' latter to be held in fixed axial alinement with the mold and accordingly a jacketin'g of substantiallv uniform thickness is provided.

It is to be understood that the lprm of our invention herewith shown and described is to betaken as awpreferred example of the same and that various changes-in the shape, size, and arrangement of parts may be re- 7 sorted to without departing from the spirit scope of the subjoined ing therein adapted to receive an ingot, and

closuremembers for 'the opening in said unit, each of said closure members having portions adapted to engage the ingot to retain it centrally v of the opening in said unit. I

within me spaced he. the walls a 2. :Apparatus of. he character described A I comprismga heatin unit havin .an' o enin extending entirely t1? 8 p g ingot, an OfSflld opening, each of saidclo'surememerethrough to receivean closure members for opposite ends lbers' having portions adapted to engage the closure members for the opening; in said 1 I heating unit, each of said closure members being provided on its inner face with a pro:

openings in the ingot whereby the atter will be supported centrally within and spaced from the walls of the opening in said heat-, ing n ,ingot to retain it -in.position in the heating A p jection. adapted to engage within reformed It will be obvious that allof the heating vunitsand moldsmay besuccessivel and conv .4; Apparatus of the character described comprising aheating' unit having alvertical opening extending therethrough to receive aningot, a closure memberfor the upper end :of said opening, means for securing said closure member in position against the-upper end of said heating unit, a vertically movableclosure member for the lower end of said heating unit, and means for vertically mo ing said last named closure member. 3

5. Apparatus of the character described comprising a heating unit having a vertical opening extending therethrough'to receive an ingot, a closure member for the upper end. \I

of said opening, means for securing sa1d closure member in able closure mem er for the lower end of said heating unit, and means fonvertically movsaid closure members having portions ada ted to engage portions of the ingot where y the latter will be supported centrally within and spaced from the walls of the opening in said heating unit when said closure memhere are in operative position.

6. Apparatus of the character described, comprlsmg a vertical heating unit having an axial opening extending therethrough to re -movable upwardly through t-he openin in said mold to contact with the lower en of said heating unit and being movable down wardly to contact with a portion of said mold ad acent the bottom thereof, and means for vertically moving said closure member.

position, a vertically mov-' 2105 mg said last named closure member, each of and said mold, said closure member being 7. Apparatus constructed in accordance i with claim-6 provided with a closuremember for the upper end of said heating unit,"

mislead closure members being rovided on its inner face with a projection apted to be received .in a preformed o in the whereby the later wi be centered moving said closure member includes a vert1- cally movable rod ada ted to be disposed wholly beneath said mo d and having its upper end movable'throu h the openingtherein, said closure member ing provided in its lower face with a recess adapted to receive the u perend of saidrod. I

. 9. RP tus of the character 1 described compris ng a heating unit having a vertical said heatingunit with the openi opening extending therethrough to receive ingot, a movable mold having a vertical open ing extending into the upper. end thereof, said mold being adapted for arrangement beneath in said hea'tingunit and said mold in' vertical alinement with each other, and means for transferring the ingot from said heating unitto saidmold.-' I

10. Apparatus constructed in accordance with claim 9 wherein the means for transferrin the in at from-saidheating unit to said mo d includes a closure member for the lower end of said heating unit and vertically movable means adapted to support said closure member against the lower end of said heating unit, said vertically movable member being 'ada ted to be moved downwardly to permit sai closure member and the ingot to enter the opening insaid mold.

11.- Apparatus oft-he character describedcomprislng a heating unit having a vertical opening extending therethrou h to receive an ingot, a closure member for t e upper end of said heating unit, a mold disposed wholl beneath said heating unit and provided wit a vertical opening extending therethrough and having a restricted lower end to form a sugporting shoulder, means for supporting I sai mold for movement toward and away from a position with the opening therein 1n vertical alinement with the opening in said therein, and vertically movable means adapt-- means heating unit, a closure member for the lower end of said mold, said closure member being adapted to rest upon said shoulder, said closure member being movable upwardly through the opening in said'mold to contact -with the lower end of said heating unit whereby it is adapted to form a closure for said heating unit and to support the lngot ed .to contact with said closure member to support it in position agairistthe lower end of said heating unit, said vertically movable being adapted to be lowered to permlt said lower closure member to rest upon said shoulder. a

12. Apparatus constructed in accordance mi 8 upon which said wheels are a travel.

13. A paratus constructed in accordance with.c1aim.11 wherein said vertically mov able means com rises a rod movable verticallythrough saidmold, a cylinder arranged wholly beneath said mold, and a piston se-' cured to said rod and reciprocable in said- M cylinder.

axial opening extending therethrough toreceive an ot, a mold'arranged beneath said heatin unit in axial alinement therewith and prov'i ed with an axial opening adapted to receive the ingot transferred thereto from said heating unit, and means arranged between said heatin unit and said mold for excludin air there rom.

15. com rising averticalheating unit having an axia opening extending therethrough to receive an inglot, a mold normally arranged be neath said eating unit in. vertical alinement therewith and laterally movable from normal positions, said mold being provided with an axial opening adapted to receive the ingot transferredthereto from said heating unit, and means arranged between said heating unit and said mold for excluding air from and retaining heat in said heating unit and said mold.

16. Apparatus of the character described compris ng a heating unit adapted to receive an ingot, a mold arranged adjacent said heating unit and provided with an o ening adapted to receive the ingot trans erred thereto from said heating unit, andan air excluding and heat retaining member arranged between said heat-ing.'unit and said mold.

17. Apparatus'of the character described comprising a heatin unit having an' axial opening extending t erethrough to receive an ingot, a mold arranged in axial alinement with said heating unit and provided with an opening to receive the ingot transferred thereto from said mold, said mold being movable from its position in axial alinement with said heating unit an air excluding and heat retaining member arranged between said mold and said heating unit, said member bein provided with a pair of movable sections an having a portion snugly surrounding a porpparatus of the character describedpparatus of the character described comprising a vertical heating unit having an tion of said mold, and means for locking said 18: Apparatus of the character described comprising a heatin unit having an ingot receiving opening in t e bottom thereof, a meme ber normally closing the lower end of said openin tols'u rt ,anj ingot, j meene orsuppg rting said nieinber fordov'v-n ward movement to withdraw ingot-from V the heeting unit. I

19. Apparatus of thecheracterdescnhed r comprising a heating having a vertical ingot receiving opemng 'in'thebottom there 1 of, :1 blockade ted to be arranged against the bottom of saifheeting form a comm plete closure for the lower end of said opening and to. form the .sole meen'sfor supporting an ingot in said o ning, and means forsupporting said block or vertical movement. i 20. Apparatus of-the character described comprising a heeting-unithaving an ingot Y recelvin op'enin therein, and means consti tuting c osures or said opening edapted toQ engage solel within the end feces of theingot v to position 1t within the heating unit. 1 21. Apparatus of the cheracterdescribed comprising 1, heating unit having an ingot receiving openin therein andmeans constitutingclosures or said opening adapted to engage: solely within the end faces of the in- 25 got to positively support'it'centrelly within the heating unit. v y

In testimony whereof we aflix our signer tures. 1 v

f HAROLD EJMoCRERY. a r v ALBERT JESSE

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