US1257478A - Die-casting machine. - Google Patents

Description

' 1. s. GOLDBERG. mE CASUNG MACHINE.

APPLICAUON man SEPT.2.1914. l p'w., Patene Mh 26., M8.

8 SHEETS-*SHEET l.

EL@ 33 Z 1. SHOWERS. DIE CAsTlNG MAcmNE. APPLICATION FILED SEPT.2,1914

Patented Feb. 26., HB8.

E SHEETS--SHEET 2.

I/wmo; Jaim i Goldberg 1.5. GOLDBERG. DIE CASTING MACHNE. APPLICAUON .FILED sEPf.2.19\4.

mme@ M 26,1913.

A8' SHEETS-SHEE 3.

azented Feb. 26. MW,

l. S. GOLDBERG.

DIE CASTING MACHINE.

APPLICATION FILED 359112,1914.

Patented Feb. 5%, v img',

8 SHEETS--SHEET 5.

J. S. GOLDBERG.

DIE CASTING MACHINE.

APPLICTION FILED SEPT.2, 1914. Y

Eatented Feb. 26, 1918..

8 SHEETS-SHEET 6.

n MJ im@ WMM f pw. www

, A @Hlwm 1 a w mi o fw J. SI GLDBERG.

. IIIE CASTING MACHINE.

. um APPLICATION FILED SEPT. 2, I9l4. I I! Patent-@II ML 26,19@

J. S. GOLDBERG.

DIE CASTING MACHINE. APPLICATloN FILED SEPT. 2. 19m.y

8 SHEETS-SHEET 8.

@lli

instruir in tornio.. Ni

JHN S, GOLDBERG, 0F HIAGO, ILLENGLIS, ASSEIGNR TO ALEMTE METALS CUMPANY,

:Din-CASTING MACHINE.

Potente@ Folli. s?, twig.

Application le September 2, 1911.1. Serial No. 559,737'.

To all y'l0/tom i may concern it known that L Jou'N S. GOLnnu-iio, a citizen of the linil'od States, residing' :it Chicago, in the rouuty of Cook uid Stato of illinois, havo iuvrulod a Certain new and useful liupi'orenwnt in Dio-Costing lila-- chinos, of which tho following is a full. clear, concise, and mart description. rufoi'onro lie- ,ing had to the :,iooonipanyiug drawings, formingl u part of this specification.

The sul'ijecl mulini' oiiliis invention is a dio costing machine.

Die Casii ii r. ,9 as is woll known, arix toi-unal hy squirting liquid metal into a mold under prvssure. Tho mold is i'lsuallyjin the forni of a, number of separalihx dios clamped together during pouring' and opened up to strip tho Casting.

To insure good sharp castings the metal must he shot into the dios in the loast possilolel space of timo. This is done to 'prevent solidiiczition due to cooling, and also to make the metal fill all the lines and curves oi' the mold. y

ln die fasting machinery heretofore construoted', it has lucien Customary to apply pressure to ull oi' tho molten metal in the) .melting pot, in order to force the metal into the dies. This places an excessive strain upon the pot, due both to the high temperature and high pressure'to which it is sul)- jectsd.- Tilgher@ is coustzuit dangor ot the pot giving way-under the se'veroistrnin and tino consequences of the loroalrinh a, pot 'full of hot metal are very grave, in( ned'.

Diioulty in roplenishing ,the supply of hot instal is also encountered lin 4this type of machine. i

Briefly' statool, the chief objlat oi? the ont invention isit'o provide/ a die .Casting machine which will produce liigh grade gast rings expeditiously and safely.

lt is also an object of this invention to provide a structure which will lio automatic in aotioin' thereby performing the various operations uniformly sind in proper Soquence.

lnI accordano@ with my invention, tho melting pot is notsubjeoted to pressure at all, and performs only the function of holdin i and heating; tho metal for the castings.

A smaller ohai'nbor, wliioh will hold only auf rolativoly small quantity of inutil suliioiont in oooh naso to form a. oastiugbj iiiod l'ro'm ,i nto the mold,

prestho dios ready to be. s

the inolting pot for each operation. The hot metal in the chamber, which l torni the pouring pot is discharged under pressure While connection with the melting pot is out off. Thereafter the conneotion hetwoon tho pouring' pot and the mold is shut ol'., and the pouring pot is filled from the melting' pot and the operations aro ii'opoatod.

The Various ports pressed air and Lach operation niust ho completed before the succeeding one can oo porformod. This insures uniorinand correct action, and. consequently, sato and rapid g'noduotimi of oastings.

ln the accompanying drawings which are operated by comn4 are automatic in their notion.

show au operative embodiment' of my inven- Figure l is u front elevation. with tho shield and other parl s broken away to reveil-l the. important workingl ports;

Fig'. 2 is o horizontal cross sectional View on the lino of lli l;

Fig. 3 is a, fragmentary flot-ail View of tho die andplunger mechanism.;

Fig. ai is a vertical section on s fluror scale through tho limiting;- and pouring' pot sind" the control nwolmnisui therefor;

Fig'. 5 is n horizontal suction on tho lino of Fig. 4l;

Big. 6 :in enlarged Aaction of the auto or ooi'itrolling tho ina-tio Valve and Casin. act of pouring;

Fifg. 'i' is :L cross-sectional View taken on thel lino 7-7 of' Fig. fl;

.lf 8 is a, fraginontsi- V cross Sectional View on tho lino SWS ot F 1g. 7;

il '1: an enlarged fragmentary eleva-- irtly in section of tho automatic pourin tontrol meclinisni; i

lli@ 10 isl s View partly in section taken right :infinies to Fig'. 9 .tromtho left hand sidoiitheroo Fig, 1.?. :is a horizontal cross section taken on the liue l1-1i of 4;

Fig. ii? is a View similar to Fig'. 2 of the dio platform and slides fi wing a ci sting in L pod therefrom ;A Figi. l is a fragmentary sectional View lOl) taken on substantially the, line 13-l3 of Fig. l2 showing tho dies and stripping mechil lrlll 2 Fig. le is a` fragmentary eleva-tion of one or the movable core ijilungersg Fig- 1li-is. a cross sectional View o* the manual, valve for controlling the increment of the plunger and platform;

Fig. 'lli is a fragmentary sectional elevation o3? the shield opera-'ng mechanism;

17 is a View similar to i3 of a modified :torni'of striping mech sin;

ll 18 is af View of the adjusting mechani'sni :for setting the rule-ruin point of the slide ruig levers;

7,. 'lll is a cross sectional View of the same mechanism taken on the line 19 19 of lug. 20 is a pian View of the discharge nozzle showing the heater for warming said nozzle; A

Fig. .21 is a cross sectional View on the line 2`l-2l of Fig. fi, showingthe manual releasing means for opening thc pouring pot;V

Fig. 22 is a Yfrfigmentary View of a' form of control handle roi' the plunger operating valve; and y Fig. 23 is a section olf the mixing nozzle for the burners.

The main framework oi the machine consists of the hase 1, troni which rises iouz` pillars i?,

forming a support for the 'furnace 3 of theV described later. I

The furnace 3 is slidably mounted on thev coluinus' and held in place hy springsll, which alloc' the entire .mechanism to be moved upward. ji platform 9 is connectedto the upper ends o' the columns 2 and 1sv also connected to the base 1 by means ofthe rods 11,'Which form guides for a inovahle l guard the operator against inrur. i

An automatic pouring` controlling mechanisin 13 is connected to the top of the 'ui hace 3 and movement of the .furnace and- Coiitrolliir; mechanism caused by pressing.

the dies vG against the nozzle 7 operates valve.

`Qmechanisni, which will. be described later,

'to discharge the nictalinto 'the dies.

: hall non.y describe the furnace with its control mechanism in connection with Figs. l, 41,5, 6.9 and 10. The furnace 3 comprises a cast iron shell 14;which lined with lire brick, or other refractory material 15. This shell may be provided with suitable hand Lammers to uw edges of which are clamped a beau.

17 carrying the nozzle 7 and a cylindrical shell i8, which forms the melting pot .19 Aand the pouringr pot 20.

ne furnace is heated by burners 22 and (see Fig. 11) connected to a common supply pipe Q4 which e'ncircles the furnace. Suitable valvesv 25 are connected between the burners and the supply pipe in order to regulate the flow of fuel, which isprefer-V ably gas. Air is supplied under pressure from a tank 26, through the main 27 to `a "l connection 28 (see Fig. 23) at which point the fue] gas is admitted through a nozzle 29 supplied from a pipcl. From the main 3Q, which carries the mixture of air und gas to the furnace, taps maybe taken, as.by

Way of pipe 33, to supply burners 34 (sce Fig. .E2-0) for heating thenozzle 7, andburn'er 35 (see Fig. 2) for heating the dies.` The burner 35 1s connected by means of a fici;- ible tube 36 to allo\\"the burner to be moved up and down with the die platform 2l.l

Thev products of 4combustion from the furnace escape through vents 37 inthe top casting 38 which is mounted on the -shell 14. An annular flue space 39, formed in a. cast ring 40, connects with a discharge opening 41 (see Fig. 8). A hollow tubular stem 42 is castintegral with the top casting-38 being attached thereto by means of the integral ribs 4.3, shown in section iniFig. 8, but concealed' in Fig. 4 by the stem 42 itself. This stein moves with the furnace 3, and aids in operating the control mechanism 13. The space between the ribs 43 and the outer edge of the casting 38 is closed by means of semicircular iroii doors 44 hinged on thebrackets 45 which are ast integral with the ribs .43. The eovfers 4. may be held in closed po sition by rii'eans of handles 46 and pins 47 projecting through lugs i8 formed on'the casting 40'. Upon the stem 42 is mounted the plunger supporting casting 49. This casting has an axial bore through its entire length as will be .described later.' The top ofthe casting 49 1s formed in the shape of a cylinder 50, in which n: plunger 51 1s a1'- rangcd to slide.

The rod 52, which projects through the inciting;` pot 19 and the pouring pot 2O and -iiornis a valve in conjunction with the scat in the nozzle 7, is attached to the plunger n51. The rod 52 is normally held in depressed condition to'close the opening in.

the nozzle 7 by means of the spring 53 held between the end of the piston 51 and u cylinder head 54:. i

A pipe 55 connected to the lower end of the cylinder and compressed nir is supplied to this end of the cylinder to raise the rod to open the nozzle 7 when the meme/e eenling: which contamin; :it thie'point pori for the ndmiesion el comprensori oir throuIglo the pipe 59. A gland Gl prevents the of the compressed zur upward l along the stein ln o. Similar manner, the

grond 62 forms e, pecking for the rod 59, where it `entere the cylinder 50. The rod 52 andthe pipe 56 theyV be each Separately jointed. in order tov facilitate their removal.

can new be seen that on the admission. oli compreesed oir through the pipes 55 and 59. any motel that is contained in the pourving `pot 2O will he expelled through the nozzle 7, the seme being opened by the more ment oi'4 rod 5%. (loller 63 (eee Figs. fr und 2l) is clamped to the' rod 52 und connected to the lever SrlY to allow of manuel opening' olnozzle 7, ue for the purpose of enipty inni the of motel. i

ooinniunieoting passage is arranged to be closed by the valve stem 66 in order to prevent escape ol the metal in the pour- 'i by the uct oi' raisin ingr 'pot 2l) when the compressed. oir is: ndniitted to the poiuingar not 20.

Yllhe closing' of this port 65 ie uocomplished the furnace 3 when 1the dies tl pressed egninet the nozzle 7 The Stem 66, which may be jointed es shown, to facilitate removal., is supported on the plotform 9 by meene of bracket G7 which is bolted to the platform 9. This bracket contains e pocket for inclosing o spring 68 und :L guide (59 forming' a bearing for the rod 2%. fr collar 7l connected to the rod 6G und ie held against the bracket 67 by ineens of the Spring 68. T he Stem G6 is thus held with sufficient pressure against the Seat 65 to close the @message between the melting pot and the pouring; pot when the act ol? u lpouring ie to be accomplished This con readily be Seen from the factthot the furnace 3 is pushed upward by en @element oli the dief; 6 with the nozzle 7, bringingr the Seat ogmnet the valve stern vGill which held, elntonary on the pluttorln expelled from the nozzle 7 as soon as .the dies and the nozzle ere seperated.

The means for admitting the air is shown in Fig. 6 as a, rotary vulve 72 mounted in the 'casing 73-on'top of the cylinder hond The easing 73 has o port for the pipe El which supplies the compressed air for op- 'erotingr the piston 5l and expelling; the metal rom the pouring; 'pot 20. It also hue ports lor the pipe. 59 which is connected tothe pouring; loot, for the 'vent 75 which. has u restricted opening; to the atmosphere, for the pipe 55 7which 'is connected to the cylinder 50, und for the pipe 7 which is open to the atmosphere. n

ln the 'position of the valve shown in Fig. G, the oct of pouring hes been accomplished,

- :ind the com Dressed oir in the ourinof ot 2O has been exhausted to the atmosphere through, the pipe 59 and l vent 75. The cylinder 50 has been exhausted through the pipe 55g` and the pipe 76. The compressed Yair odniitted through the pipe 74 is out oli" from communication with :my of the other pipes. A slight retention of the valve 72 in u' clockwise direction will connect the said pipe 74 with. the pipes 59 and 55 for the purpose of operating the piston 51 and expelling the metal from the pouringl pot 20.

.At this time the exhaust ports con1munieating- With the vent 75 and the pipe 76 are Shut oli. yThe valve 72 is formed of a rotary cylindrical slotted part, and :t central flattened part 77, which. is fastened to the Shaft i'or operutingq the Valve. This allows of e closer lit of the valve with the casing and also allows replacement of the rotary port in ease or' Wear.

'.lfhe stein of the valve 72 is connected by means of u lever 7 9 to en operating rod 81 which isgiven the proper motion for colo-v trolling the valve 7.2. The rod 81. is joined 4 to an enlurged plunger portion 82 which has e' bearing in the bracket 83 formed on the costing 49. The lower end of the plun- `ger projects through the platform .9. A coller Se is attached to the plunger 82 below the bracket and is provided with n Shoul-- der 85 for engzigement with the detent 86 which is pivotecl. 'on *the bracket' 87 bolted to the platform 9. The detent 86 is pro vided with on enlarged tail bent horizontelly in order to causeengagement of the nose of the detent with the shoulder 85.

A pin 88 is mounted on the casting 49 and. moves upward With the stein 42 When the (lie` G engage the nozzle 7 und force the lfm-nare sind :ittuched parte,l including the rod 51")` bodily7 upward. This upward :movement of the stem 42, to which the brochet H is attached. causes :1 compression of the spring Si) mounted between the bracket 83 :incl the coller El() attached to the 1)lungrer 82 :xml the relative motion ol' the parte cuusee u clockwise rotulion. of the lever 79 und et lio ) Lerner/s l.tached valve 72 with respect lto the casing 73.

llhe clockwise motionof the lever 7 9 and `thus opened by the difference in movement between the valve casing and the operating rod 81. After the valve has been brought to the open position by movement of the stem 42 and attached parts, further moveu ment of these parts causes the valve to close automatically. This is accomplished by the pin 8S (see Figs. 9 and l0) vwhich engages i the tail of the detent or dog' S6 and trips it out of engagement with the shoulder 85. The spring 89 then restores the valve to closed position.

At the same time that the stem 42 is moving upward, the melting pot 19 moves up- Ward and brings the rod 66 in engagement with its seat to, close communication between the pouring pot and the melting pot. This occurs before the valve 72 is sufficiently rotated to admit air to the cylinder 50 and tothe pouring pot 20. Hence, during the upward movement of the furnace 3 and attached parts, the metal is shot into the dies by the action above described. As the stem 42 is raised a trifle `farther the pin 88 engages the tail of the detent 86 and trips the detent, allowing the spring 89 to close the valve 72 by rotation of the arm 79 in a counter-clockwise direction.

At the same time that the air supply is shut of by the valve 72, the e. haust ports connected with the cylinder o0 and the pouring pot 20 are opened to l, the atmosphere. The cylinder 50 is immediately exhausted in order to close thJ nozzle 7 quickly.l rl`he pressure in the pouring pot 20,is released more slowly, in order to'give the rod 52 time to set against the nozzle 7 and to prevent any quick release yict the pressure upon the metal which may, at thistime, contain some bubbles of entrained air or other gas.

The mechanism for bringing the die 6 into engagement with the nozzle 7 and thereby raising the furnace 3 and attached parts, as above described, is shown more clearly in Figs. 1, 3 and 15. A cylnider 92 is mounted on the base 1, and is supplied with compressed air from a tank 93 under the control oi' a valve 94 for raising and lowering to the plunger 5 is closely fitted in the cylinder 92 and under `the pressure of air, whic can be admitted to either side, the platform 4 may be Vmoved up or down, as deslred. d

The rotary valve 94 is controlled by means of the handle 10 which is placed Within convenient' reach of the operator.-

The handle 10 is connected by a rod 21 with the lever 30 of the valve 94.

In Fig. 22 I have illustrated'a modified form of controlling handle 139 rigidly mounted on the .rod 21. ,A rack 140 is arranged to be engaged by the latch '141 which.`

is pivoted on the handle 139.

The die platform 4 has bearings on the columns 2 for guiding its movement to bring the die 6 into alinement with the nozzle 7.

Suitable dash pots 96 may be provided for',

controlling both the upward and downward movements ot' the platform .4 inu order,` to prevent banging of the parts together. These dash pots may be in the form of -hydraulic cylinders having regulable ports-for governing the speed of the platform. The rotary valve, shown in section in Fig. 15, comprises a stem 97, upon which is mounted the valve proper 98. Thecasing 99 has connections by the pipe 100 to the air'tank other is connected to the exhaust pipe 103,

which discharges into a muflier 104.

dies it is necessary to open the dies. This is accomplished in the present machine by.

mechanism automatically operated by raising and lowering the die platform.

On the platform 4, are mounted a series oi four slides arranged at the four .sides of a rectangle. These slides 105, 106, '107, and 108 are mounted on dove-tailed Ways 109, which guide the slides in the proper directicn. Each one of the slides is connected to a pair of levers 110 passing down through slots in the platform to a roller 111, to which the lower ends of each pair are attached. These rollers play in guide brackets 112, which are bolted to lugs on the cylinder 92. Each pair of levers is fulcrumed upon a bracket 113 (see Fig. 18) which brackets are so mounted as to allow an adjustment of' the initial and final position of the levers.

Dove-tailed ways 114, similar to the ways 109, are mounted on the bottom of the plat form 4. The brackets 113 are slidably mounted on the ways and their `osition may be adjusted by means of the co lar bolt 115, and the nut 116 fastened by the bracket 1,13.` A friction piece 117 controlled by a set screw 119 clamps the bracket 113 infany desired position upon the ways 114 To adjust the 10o In order to strip the castings from the form withdraws the core plungers from the dies, opens the dies and then strips the casting from vthe mold` This operation may be repeated continuously and produces castings of a high grade in a minimum space of time. The operator is protected at all times, rst by the fact that there is no pressure upon the melting pot, and second, by the fact that when pressure is placed upon the pouring pot the shield is in such a position that no metal` can escape from the dies or the nozzle and even if the pouring pot should break no injury would be likely to result as there is only metal for a single casting under pressure and this is entirely inclosed by a Tire brick furnace which would prevent the escape of any of the hot metal.

rIhe nozzle may be kept clean after each casting by merely brushing the same either with a scoop or a brush.

There is no danger of an accidental operation of the valve controlling` the air pressure, inasmuch as the saine is dependent upon the dies being properly in place and raising the furnace and connected appa-'ratus.- That is, the valve can be tripped only by the actual operation of the machine, and even the most careless operator is not likely to be injured. The operation of the machine by compressed air gives a smooth and easier operation than would be possible by means of gears.

Instead of moving the dies into engagement with the nozzle, the nozzle may be moved against the dies. I consider that mere reversal of parts or mere reversal of relative movements of parts constitutes in itself no departure from my invention..

Y While I have described my invention with reference to the details of this particular embodiment, I do not intend thereby to limit my invention, but consider the same to be broadly new, and desire that the appended claims be construed as broadly :is possible.

, What I claim as new and desire to secure by Letters Patent of the United States is:

l. In a die casting machine, -a melting pot containing hot metal, a pouringpot, a die mold automatically controlled, means to lill said pouring pot from said melting pot, manually controlled means to connect said die mold and said pouring pot, and automatically controlled means for subjecting the metal in said pouring pot to pressure only k.while the die mold and pouring pot are y connected.

2.I In a die casting machine, a melting pot, a pouring pot connected to said melting pot, a valve between said melting pot and t pouring pot, a dievmold, means to connect said die mold with -said pouring pot, avalve for said connection,. "atedbyi-ihe "mi vehmiistu opa-. seltenen tp :letame saidconnection, mechanism operated by4 the connection of said die mold to said pouring pot for closing said rst valve and opening *Ni` said second valve, and means for applying pressure to said pouring pot. A

L In a die casting machine, a base, a die platform, dies inovably mounted on said platform, a pouring pot having a-nozzle for y8) connection with said dies, a valve for con-- trolling seid nozzle, supporting J means yieldingly supporting said nozzle-on saidbase, a meltingpot, an opening between. saidl` melting pot and said pouring pot, ineens-to "S5 move said die pletformfto bring4 saiddics und .said nozzle into engagement, and means. controlled by the engagement ots' dl dies.,4 with said nozzle for closing said'velv l .-5. In a die casting machine,- abasm'staijd "281 ards :f 'nounted on said base, a` pouringA pet having a nozzlel mounted'fonsaid staudcrds;.\ a die platform carryingadie. mold, means to cause said diegnioldtoengage'Said a melting pot having' aQcognnionfvvith"said "e5 pouring pot, a valve in said, connection, said valve closed/by .disengagement (if/said mold., with said nozzle, and means controlled I by the engagement of Said mold with said nozzle for applying pressure'to said pouring 100 pot. 6. In combination, a basel, guides niountev'? on said base, a pouring pothaving. nozzle mounted on said guides, springsto hold said pouring pot against movement on said 'lor guides, a die plat'rorin carryingiadielniolc for engagement with 'said' nozzle'toY move said pouring pot against the tension `et said springs, means controlled byv the movement of said pouring pot for applying pressure to 1iP the interior thereof to discharge the 'mein`- into the die mold. i ig 7. In combination, a base, guides secured to Said bese, a pouring pot slidably mounted on said guides, springs to restrain mov,` Vr ment of said pouring pot, a nozzle connected to said pot, Said nozzlehaving ajvulvo con-- trolled openingtherein, a die platform movT able ou said guides, dios on said platform,

means adapted to bring said dies into en- 20 gageinent with said nozzle, and to more Said pouring pot, and ineens set into :ictionby engagement of the dies.v with said nozzle to subjectthe metal in said pouring por to high pressure. v5

8. In combination, u base, gniidesvseeured to said hase, a pourlng potslidably,mounted on Seid gindeaspixingexto restanti increment Leser/e of said pouringI pot, a nozzle ooimeoted to said pot, said nozzle having,n a valve con-- trolled opening therein, a die platform movable on said guides, dies on said platform, means to bring said dies into engagement with said. nozzle and to move said pouring' pot7 and means set into action by engage nient of the dies with said nozzle to subject the metal in said pouringl pot to a high pres sure, a melting pot, and means iofill said pouring pot therefrom upon the dsengago ment of said dies and said nozzle.

9. ln a die casting machine, a base, guides .mounted on said hase, a pourin,.01 pot having' f forv controlling` .said valves.

l0. In a die casting machine, a base, a

' luralit f of ruidos mounted thereon a Jour- .l e: a

ing pot having a discharge nozzle mounted on said guidessprings vfor holding said pouring pot against movement, a die platform having a die mold thereon., means to4 bring said die mold into engagement with said nozzle and to move said pouringl pot against the tension of said springs, and

.means controlled b v the movement of said pouring pot for disoha liggingv the metal therefrom into the die molds.

il. In combination, a base, a pluraliti7 of guides mounted on said base, a die platform carrying a die mold, said platform being movable on said guides, a pouring pot having` a. nozzle, means to move said die platform on said guides to bring said mold and nozzle into engagement, a shield, and .means operated by the movement of said die platform to move said shield into proximity to said nozzle.

l2. ln combination, a base, guides mounted on said base, a platform on said guides, a die mold on said platform, a shield surrounding said guides, pulleys supported by said. platform, cables connected to said shield. at one end and to said platform at the other end1 and passing over said pulleys for moving said shield toinclose said mold upon the movement of said platform'.

13. ln combination, a plurality of guides. a pouringl pot having a nozzle, a die late form having dies thereon, said p-lat'orin beingl movable on said guides, a shield for inolosiiig said dies, means to move said die platform on said guides to bringsaid nozzle and said dies into engagement, and means to move said shield at aA greater speed springs for than said platform to cause said shield to inelose the dies.

la. ln combination, a base, gii,i.clessii1'iported by said base, a die platform mount ed on said base and movable loifigitudinally with respect to said guides, said platform bearing a die mold, an air cylinder having` its axis parallel to said guides and having a piston for ii'ioving` said platform .lengt tudinally along said guides and cani corr trolled means for causing` said die' mold to close up upon niovenieiit of said platform. along said guides.

l5. In eoinbinatioii, a plurality of longitudinal guides, a die platform movable into v and out. of pouring position faloiig f said guides, said platform carrying'v a separable die mold thereupon., levers for moving said parte together, an air said. guides foi-.moving said platform along said. guides, and cam guides for moving said levers to close said mold.. when the cylinder parallel to" platform is moved to bring; 4the mold into pouring position.

1G. In combination, a plurality of guides, i-

a die platform carrying a separable die mold thereupon, levers for moving said parts together, :in air cylinder for moving` said platform, cam guides for moving said levers to elose said mold, and a hydraulic plunger for governing the speed of said platform.,

17'. l'n combination, a base bearing an 19. .ln combination, a plu ality of guides,

a base supporting said guides` die members slidablv mounted on said guides, a pouring pot inovablv mounted on said guides. resisting movement of said. pouringl pot. a nozzle for said pouring -pot adapted to be engaged b v said dies, a stationary bracket. a valve rod Connected to said bracket. a melting` pot, a connection between said melting pot and said` pouring' pot` said valve being closed by the relative movement of said pouring pot and said valve rod upon the engagement of said dies ivith said nozzle.

20, ln combination, a plurality,T of guides, a base supporting' said guides, die members .air cylinder, a 'plurality of 'guides mounted nou said base, a die platform having sli'dable slidably mounted on said giudes, a pouring B1 narrative movement of said pouring pot, caused by the engagement of the dies With.said nozzle for closing the port bet-Ween said pouring pot and said melting pot, for opening said valve in said nozzle and for opening said air valve to connect said pouring pot with said air chamber.

21. In combination, a pouring pot having a discharge nozzle, a melting pot having' a port connected to said pouring pot, .valve mechanism for 'closing said port, a valve normally closing said discharge nozzle, a pressurepipe and -an air tank connected to said 'pouring pot, and means con-` trolled by the connection of a die mold with 'said nozzle for causing said valve mechanism to close the port betweenL said melting pot andV said pouring pot, and thereafter applying pressure to said pouring pot and 80 opening the. valve in said discharge nozzle.

'y -22. In combination, a vplurality of guides, 1a ldie' mold movably 'supported on said guides, a pouring1 pot mounted on said guides, a melting pot supported on said 'guides and having a portconnected/mll jsaid pouring pota nozzle 'for' saidpo'uring pot for engaging said die molgavalve Jfor p 'glsaid nozzle, a :pressure pipe connected to 5 said pouring pot, means tti/apply pressure '4.0fto said pouring pot through said pressure pipe, means to ppen the valve/ot said 'nozzle,r said pressure applying means and said @nozzle valve opening means being operated u by movement of said die mold int-o engagementW-ith said nozzle, and means tor aul tqinatically exhausting said pressure from slt'id pouring pot and for closing said noz- -j '23, In combination, ,a pair of guides, a ,50 ,die-*Emold movably v supported by said "@jguides, a pouring' pot movahly ,supported :en .said guides, a melting pot connected to said pouring pot, said pouring pot hava discharge nozzle, means to bring said E -diefemold into engagement with said dis- 'charge nozzle, means to apply pressure to i ,-gisaidv pouring'pot and itc open the valve of Tsaidnozzle for filling said die-mold, auto- Lmatic means operated by the engagement ov said die mold With said nozzle for releasingfthe pressure on said pouring pot and r i losing said valve.l i

y." In combination;v a?. pouring pct, guides Suprerttg said; ,mvrinsfraaaprirsi orfholdlvng lsald'poumrignctfagmnstninre merit, a. meltingpot having o port connecting with, said pouring pot, ai stationary bracket, a valve for closing said port controlled by the relativeI movement of said pouring pot, and said bracket, a pressure connection :tor said pouring pot,`ia valve in said connection, means operated by relative movement of said pouring pot and said guides for opening said valve, and means controlled by further relative movement of said pot and said guides for closing said valve.

25. In combination, a plurality of guides, a pouring pot having a discharge nozzle movably supported on said guides, a supporting bracket movable with said pouring pot on said guides, a stationary platform, detent means mounted on said platform, a valve rod supported by said movable bracket adapted to engage said detent, said valve rod being operated by relative movement of: said movable bracket and said stationary platform, an air pipe connected to said pouring pot, a valve in said air pipe, said valve controlled by said valve rod to admit compressed air to said pouring pot.

26. In combination, a plurality of guides, a pouring pot having a discharge nozzle movably supported on said guides, a supporting bracket movable with said pouring pot on said guides, a stationary platform, detent means mounted on said platform, a valve rod supported by said movable bracket adapted to engage said detent, said valve rod being operated by relative movement of said movable bracket and said stationary platform, an air pipe connected to said pouring pot, a valve in said air pipe,

said valve controlled by said valve rod to `admit compressed air tol said pouring pot, a

spring on said valve rod, a pin `movable with said bracket to trip said detent, said valve rod being operated by said spring to close the valve. A

27. in die casting machine, a melting pot, a pouring pot having a port connecting with said melting ot, a valve controlling said port, 'a die mo d, a port in said pouring pot for connection with said die mold, a. valve controlling said last named port, means to apply )ressure to said pouring pot, means control ed by the engagement oli' said die mold with said pouring pot for closing said first valve, and means for opening said second valve and applying pressure 'to said pouring pot vvhile said first valve is closed.

2S. in a .die casting machine, a melting pot, a pouring pot having a port connected therewith, a normally open valve controlling said port, a die mold, a port in said pouring pot for connection With said die mold, a valve 4controlling said last named.

para, Disenador admittingycompressed air' to said-pourmgpotj means -mntrnllerl lb v thi Y Lamers ing pot for closing said first named valve,

v means -for opening said second Valve and ing pot below said melting p'ot pressure connection to la nozzle,

a il in air ressure" to wllilil7 sgid first Valve is closed and'automatically acting means for closing saidy seo# ond ,valve and exhausting the pouring pot.

29. In combination, a

with said nozzle, a valve for said nozzle, a said pouririgpot, an air cylinder for operating said valve, acontrol valve for admitting eompressedair to said cylinder and to said'pouring pot t0 dis-J 1 charge the metalfrom said pouring pot lInto' lsaid dies.V

30. In combination, a pouring pot having said nozzle, a valve for said nozzle, a pressure connection to said pouring pot,`an air cylinder for valve for admitting compressed air to said cylinder, and to "saidpouring pot to :discharge the metal from said pouring pot into said die mold, said valve automaticall erated to exhaust the air from said cylinder andV from said pouring pot. l

31. In combination', a melting pot, a pouring pot, a valve for connecting said melting pot and said pouring pot, a discharge nozzle connected to said pouring pot, a source 'of compressed air for driving the contents of said pouring pot out of said nozzle, a valve for said nozzle, and common means for supplying fluid under pressure for operating said last named valve, and for driving the contents of said pot to said nozzle.

32. In a die-casting machine a melting pot, a. pouring pot in communication with said melting pot, a die mold adapted to be connected to said pouring pot, means controlled by connection of said pouring pot with said die mold to close od' the communication between said melting pot and said,

pouring pot.

33. In a die-casting machine a melting pot, a pouring pot normally in communica- .tion with said melting pot, a valve for closing oli said communication, said pouring pot having a nozzle, and a die mold adapted to engage said nozzle, said Valve being closed by engagement of said pouring pot nozzle with said die molds.

84. In combination a melting pot, a pourand connected therewith, a passage way between said melting pot and said pouring pot, a nozzle forming an outlet for said pouring pot, a die mold, a valve for the passageway between the melting pot and the pouring pot, a valve for said outlet nozzle, means for supplying compressed air to said curing pot, a valve for said compressed air supplying means, said valves being automatically cons aid pouring -pot air in said' pouring pot hav-`v ing a nozzle, die molds for engagementa die inoldfor engagement with operating said valve, a control- 1 Opy 35.. In a die-casting machine, ametal'wconf i taining -member comprising a adapted to -receive metal j toi L pouring potv formed axially melting pot be v melted, a

in una with said melting pot andbeloviT the' same, a wall between said' melting pot, said wall vbeingaxially"apertured, sai

having its'end'ffastened injsaid axial-passage, a discharge nozzle-for /sai pot, saidldischarge axially /o'f said pot, ,valve passa/ge between' said melting/pot, and aivalv'ehaviiig astem vprojacting throu h `saidfpipe*for closing said discharge n/o'zzle. l "4 36.u In a machine of the classy described, a

lpouring pot h 'cylinder having said pouring. pot and a plungerpa valve controling said discharge'nozzle,faconnection between said plunger'aiid 1'said valve, and

vmeans for admitting a "fluidf under pressureI themetal therein to' said pot-for discharging and to said cylinder for opening. said valve.

3 vIn combination a pouring pot having a discharge `nozzle,

wall liavinga valve'passage therein, a pipe` aving afdischarge nozzle, a`

potand said pouring d pouring i nozzle having a 'passage y a valve .controlling the a cylinder in linewith said discharge nozzle, -said vcylinder having.` i

a plunger, a valve contnolling said discharge nozzle, a stem connecting said vvalvel and said plunger, a spring operating on said plunger and tending to hold said Valve norv y upon 'its lseat and means for admitcompressed lair substantially siinultaneoiisly to said cylinder and to said pouring pot. l V

38. In combination,

p mall ting lhaving a plunger, a valve controlling said discharge nozzle, a connection between said plunger and said valve, means controlled by engagement of said die mold with said noze for admitting fluid under pressure -to said pot and to said cylinder.

39. In combination, a frame worl, a pouring pot having a discharge nozzle, said pot being supported by said vframe work, separable dies for forming a suitable mold', said dies beine movable' into engagement with vsaid nozzlia, a Huid `pressure cylinderhaving a plunger -for moving said dies into engagement with each other to form a suitable mold, a valve for said nozzle, means for'subjecting the metal in said pouring pot to Huid pressure, valve means controlling said iiuid pressure means, manual means controlling the movement of said plunger to cause said dies to close and automatic means controlled by en agement of said die mold with ating said valve.

a die mold, a pouringpot having a discharge nozzle,ra cylinder`- said nozzle or oper-l to engage lsaid nozzle, and

40. In combination a pouring pot having/ i a nozzle. means for filling said pouring pot, means for discharging metal from said '43. A melting pot, a pouring pot, die sec-V pouring pot, a plurality of dies, manually controlled -means for closing said dies together and placing them in communication with the nozzle of said pouring pot 'and automatic means for operating said filling means and said discharging means tion 1with said nozzle.

y 41. In combination a melting pot, a pouring pot having a nozzle, a plurality of die sections, manually controlled means for closj of the die sections with said nozzle.

42. 1n combination a pouring pot having 'a nozzle, die sections, a cylinder for closing said die' sections together and for moving the' same into engagement with said nozzle, a manually operated valve controllin said cylinder, a shield movable by said cy inder for inelosing said die sections and said pouring pot, and automatic means controlled b engagement of said die sections With said nozzle for discharging metal under pressure into themold.

tions, manually controlled means for closing said die sections together and for bringing the same into communication with said pouring *pot7 automatic means controlli d by bringing. said 'die sections into communication with vsaid pouring pot fordischarging metal from said pouring pot into said die sections, and means controlled by disconnectcon` vtrolled by placing said dies in communica-A ing said diesections from said pouring pot 44. In combination, a supporting frame, a

pouring pot movable with res ect to said frame, av paWl member on said frame, a source of fluid under pressure for driving the metal from said pouring pot, a valve for said pouring pot, said valvebeing movable with said pouring pot, an operating member for said valve, springmeans normally holding said valve in closed position, a catch connected Withsaid valve operating meinber, said catch being adapted to engage said pawl when said pouring potis moved, and means movable with said pot for releasing said pawl and catch.

45. In combination a die mold, a supporting frame, a pouring pot, said ot and said die mold being 'relatively mova le with re- Spect 4to each other, a source of Huid under pressurefor discharging metal from said pot into said die mold, a valve, having a movable valve element, for admitting uid under pressure to said pot, an operating member for controlling movement of said valve element, a detent member adapted to engage and hold said operating member, and means operated during engagement of said die mold and pouring pot to release said detent member to permit said valve to close. In Witness Whereof,'I hereunto subscribe my name this 20th day of August, A. D.

JOHN S. GOLDBERG.

Witnesses:

LEONARD W. NovANDnR, JOHN H. DIENNER.

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