US1816059A - Rotary casting machine - Google Patents

Description

July 28 1931. i w, rr 1,816,059

ROTARY CASTING MACHINE Filed Dec. 24,1928 7 She'ets-Sheet l July 28, 1931. E. w.- "SMITH 8 5 ROTARY CASTING MACHINE Filed Dec. 24, 1928 '7 Sheets-Sheet 2 m 28, 1931. w, 5mm 1,816,059

I ROTARY CASTING MACHINE Filed Dec. 24, 1928 '7 Sheets-Sheet 5 Edward 60 10% WEE v nor/v5.58:

July 28, 1931. s. w. SMITH 1,816,659

ROTARY CASTING MACHINE Filed Dec. 24, 1928 7 Sheets-Sheet 5 far ward {Z4 Jaw/ July 28, 1931.

E. W. SMITH ROTARY CASTING MACHINE Filed Dec. 24, 1928 WI/TIVESS,

7 Sheets-Sheet 6 Edward? Y lif ng appa t v operated by lever 1 and earn: 106 (Fig. 2) 90 Patented July 28, 1931 PATENT OFFICE I Applicationfiledz December 24; 1928. Serial No. 328,100.

The object ofthis invention isto provide Figure 14 is a side view of the mould showa. novel andhighly practical machine for ing the cooling passages and heaters. making large numbers-of castings. It ispar- The grids are cast in twins with extending ticu-la-rly applicable for casting lead or lead lugs and overflow metal 84 at the top as 5 alloy grids for storage batteries. e I shown in Figure 8. i

s This machine also embodies numerous -The machine may be described as follows: novel and ingenious. mechanisms. for per- It consists essentially of a rotating wheel forming, parts of the complete operation of or table 12, Figs. 1 and 2, mounted upon a casting a grid.- There are provided also sev- Vertical axis and carrying a plurality of 1 eralnovel and practical safety deviceswhich moulds A, B. As the table rotates, each prevent damage to the machine or iii ury to mould in succession is brought to pouring theoperator. The desirability of these safeposition 1, in Fig. 1, where tl'ie molten. lead guards is readily seen when it is remeniis introduced into it,then next, into position beredthatthe material being treatedis mol- 2, Where cooling water is introduced on the 15 ten lead, p top. of. the. gate to cool this part, following In the drawings, next, into position 3 and 4, where the cooling 7 Figure 1 is a plan view of the machine. of the whole casting continues. Between po- A Figure 2 is a cross section on line 22 of sitions 4 and 5 the mould is opened. At p0si- Figure 1. I tion 5 the casting is removed and at the same 20 Figure 3 isa plan View of the main driv ng time the mould is brushed. At position 6 the cam, the auxiliary cam shaft,and the liftmould is dusted. Between positions 6 and 1 m 1i k I v V i the mould is closed. At position 1 it is again Figure 4 is an elevation of the lifting ready for the introduction of more lead. linkagesand cams. I These various operations and the mechanism l 25 4 Figure 5- is an elevationon line 5-5 of and mechanical devices for performing them 7 Figure 2. i may now be described in further detail:

, 'Figure 6 is a plan view on line 6-6 of Table 12, Figs. 1 and 2, is provided with a Figure 5 enlarged with parts in section. set of camrollers 13 corresponding in number Figure 7 is a side. elevation of the grid to the number of positions of the table,the' and brush lifting mechanisms with parts same engaging in groove 14 of the main driv- Shawn i ti g v p ing cam llshown in Figs. 123-4. Figure Sis enl'arged cross secti on I Cam 1 1 is fixed upon the horizontal shaft i 8 8 f Fig 7 I 10 and 1S driven at the required speed by -FigurefE) is a side elevation of the dusting motor gears: 9? other sultable means not or soap stone blowing mechanism with parts Show The gmove f may 3 broken away i t be so designed as to produce an ntermittent Fi u 10 is a partial 'sectional View of the rotatlon of the-tab1e-cau-S1ng It t temam 7 fixed for a definite period -1n the positions of apptlmtus 9 p l t rest, where the necessary bperations are per- 40 Fi r l l Crosssectlon n hne formed onthe moulds. In order to relieve nilliof Fig v the cam 11 of the operation of stopping the E-l L213 secmon onvhne 12512 table at each position, a brake. ring 37 is at- Of Elgure 9 y s I tached to the moving member 12 passing be- Flgure 13 15 21 iron; elvatlon'of h 'g d tween brake shoes 38 and 38 which are cam i mounted on the end of main cam 11 so as to chanism contributes very materially to the smooth operation of the machine. Each mould consists of two parts A and B parted in a vertical plane, and opened by the parallel motion of one half (B) with regard to the other, so as to allow of the removal of the casting after it has'sufliciently cooled. The mould parts are mounted on yokes or brackets projecting from the rim of the table In Fig. 2 at the'right hand'a mould isshown closed and at the left hand a mould is shown open and a grid or casting, partially removed, dependent from forks (22) placed there for the purpose hereinafter more fully described. The. outer half (Alof each mould is. spring mounted but otherwise fixed relative to the main table, while.the inner half I isslidable in a radial direction either to .or away from the fixed half.

[,The movable halfof each mould is operated by cam rollers16 shown in Fig. 2, which engage with a fixed cam 16which is rigidly attached to the main central column by means ofthe spider 18. i

" Mounted on the table 12 adjacent to each mould, is a" pair of upright guides 19 which carry between them a vertically movable I, .cr'ossarm 21 which'in turn carries a horizonjtal sliding bar 24 This bar 24 which is made so as to benon-rotatable in the arm 21 is caused to move in and out in a radial di.

rection by means of the doublecam 25 and 26 and cam roller carried by part 24.

To the outer end o-f this. slide bar 24 is attached the fork 22 which is shown on Figs. 27i8,"and which may be;designated as a removing member. s This forkis so placed 7 that when themould is in theclosed position,

it projects downward into the gate of. the mould, By reason of the prongs of the fork being somewhat roughened, or notched, near the ends, the casting attaches itself to them,

. shown in Fig. 2iat the left.

;tory motion imparted to the forks by unflulfltlOns 27 assists in freeing the plate and,'when the mould opens, is leftpendent from them. Fixed cam25 and 26 is shaped ,so that between positions 4 and 5 while the fmould is'opening, the-forks 22 arealso moving inwardtowardthe center of the machine,

thus. freeing the dependent grid or casting entirely from both halves of the mould, as

The vibrafrom the mould. The grid, now depending freely from the forks 22, is free to be lifted upward. which isjaccomplished by means of projections 23 forming part of the movable crossarm.21foperated in turn by lifting arms :44 having jaws 45 at the upper end.

' As the fork 22 carrying grid 39 approaches its upper position, the gate 34-of the grid comes in contact with two fixed arms 20 which prevent the grid from lifting .any'further, and therefore cause the fork 22 to bewlthdrawn from the grid, thus leaving the grid free to drop. Just before this takes place, however, two movable fingers49, Fig. 7, are projected forward directly under the grid lugs, so that as the grid drops the lugs rest on these fingers and the fingers are then with drawn so as to get the grid out of the way of the movement of the machine and'deposit it on a conveyor chain 52. The action of the fingers 49 in catching the plate is assisted by small springs 67 attached to arms 20, so arranged that, as the grid is freed from the fork 22, the springs throw it slightly fora small connecting rod to rocker arm 42 fast 2 on shaft 41,which in turn is operated through 51 system 40 of rods and rocker arms from a cam 39 attached to the main shaft 10. The sliding member 44has rigidly attached to it the arms 44 which operate through crossarm 21 the grid forks 22'and it further carries with it. a pair of brushes 46 so placed as to brush the two faces of the mould whenthe arm is raised.

These brushes are so mounted that they i b may be adjusted. outward as the bristles wear down from coming in contact with the hot mould faces. There are further provided, attached directly below thebrushes, a couple of pipes 47- having small perforations, so arranged that compressed air may be blown on to the mould when required to aid the brushes inthe work of cleaning the mould faces.

The mechanisin'for removing the grid 'af- 1 ter it has been freed from the forks 22 may be understood by reference to Figs. '17& This whole mechanism is located at position 5 in Fig. 1. TWo'bars 49 which do the actual catching of the plate are made to slide toward and away from the'center of'themachine by means of bell cranks 50 to which'they are attached by connecting rods, the bell cranks in turn beingoperated by. means of spring 50 and chain 48 ,-driven in its turn by a second bell. crank operated by (32 1111 48 attached to-tbe end ofthe main cam drum 11. Bell crank 50 is also connected by a second con necting rod to a pair of ratchet and paw mechanisms 5]., which in turn. by means of a sprocket wheel, operate collecting chains previously coated with a thin application of powder, talcum, or the like. In the present machine, this is accomplished by the mechanism shown especially in Figs. 910-l1.

In Figs. 9 and 11 are shown two uprights 103 which carry between them a sliding piece to which is imparted a vertical motion from cam 39 by means 'ofconnecting rods 53 and rocker arms '53 pivoted on shaft a1,

shown in Figs. 3 and 4;. Timing of this slide 55 is identical witlnthat of slide l l and arms 44 so that the dusting of one mould takes place at the same time as plate removal and brushing of another. ttached to the sliding frame 55 are a couple of pipes 56 carrying at their upper-ends anumber of small jets 58' projecting so as to impinge directly upon the two mould faces, as the slide ascends. At the lower end of the pipes 56 they are tel'escoped to the second pipes 57 each of which ends in a small chamber 67. Chain ber 67 is formed by a counterbore in the plate 63 which is rigidly attached tothe two fixed upright members. Under each of the cavities 67 of plate 63 is a movable disk 64 mounted on a vertical axis and shown better in Fig. 12. Through plate63 there extend a second pair of tubes 60 extending upward to vessel 59 into which the dusting pow der is initially introduced. The vertical shaft 61 with the paddle 62 on it turns slowly, keeping the powder in constant agitation, so that the pipe 60 is constantly full. The rotation of shaft 61, as of thetwo disks 6%,

is caused by means of a worm and gears,

shown. At 65 is shown a small tube or jet entering chamber 67'a-nd this tube is connected by means of suitable piping to an valve 66 shown in Fig. 3. T is air valve, in turn, is operated by a cam 66 so that as jets or nozzles 58 enter between the two.

- mould surfaces, on theirupward motion, air

is turned on andadmitted to the space 67.

, Each of the disks 64 is made with a series ofslight depressions in its upper face, and as the, diskro-tates under the tube 66 which is tapered outwardly at the bottom so that the powder will always fall freely, these depressions become filled with'p owder. As soon, thereforaas the air is turned on to the jet 65 that part of the disk which is exposed to. it in chamber 67 is blown clear, and the cloud of powder and air together are carried up through tubes Y57 and 56 and the jets 5'8 whence it is discharged onto the mould surfaces. By means of this arrangement it is possible to distribute powder and dust with comparative uniformity over the whole surface of the mould, and it is also possible to deliver the same amount each time, since the air jet in each instance blows out the dust contained in a certain number of the depressions of the disk. The amount delivered may be varied at will by changing the speed of rotation of the disk 64 and by changing its position with regard to the opening 67 so that the opening will be nearer to or further from the center of the disk. The amount of powder can also, to a certain extent, be regulated by adjusting the amount of air introduced through the jet 65, but regulation of this sort is not so positive as by changing the diskin either of theways above noted.

A further advantage of this arrangement of dusting the moulds consists in that fresh dust may be introduced into the reservoir 59 at any time, without necessitating interruption in the operation of the machine.

In position 1, molten metal is fed into the mould from pivoted tilting ladle 71. This ladle is operated by shaft 7 2, having universal joints 72 which in turn is actuated by cam 73 on cam shaft 30. The molten metal is introduced into ladle 71 by means of pump' 29 and pipe 70, the latter preferably enlarged as shown at 101 so that, by the application of a gas flame or other heating means, the tem perature of the metal may be controlled largely independently of the temperature of the pot 28. The plunger of pump 29 is actuated through a couple of connecting rods and a walking beam, by crank 30 mounted through a clutch shown in Fig. 6, upon a shaft 30. The clutch is arranged with jaws 32 which engage when in a certain predetermined po- 'sition of the shaft only, so that if the lever 31 is operated so as to throw out the clutch, it will always come into action again, when the lever is released, at the correct position and in time with the rest of the machine. In case, through carelessness, the machine is operated while the metal in the pump is in solid condition and without throwing out the lever 31, the spring 33 will compress and allow the jaw 32 to slide free, thus saving the mechanism llO from breakage which would occur were the clutch positive. The adjustment shown at the left hand side of the walking beam is for the purpose of regulating the amount of lead delivered by the pump exactly as required.

Owing to slight collection of dross within the pump or slight leakage of the valves, the amount of lead delivered is constantly subject to slight variation and this has to be cor- A rected by adjusting the stroke of the pump, by the means shown.

In the casting of plate grids for storage batteries. for which the subject of this specificationis especially adapted, it has been found that very exact temperature regulation of the moulds is necessary, in order to produce perfect castings. Certain parts of the moulds tend to become overheated and require cooling, while oiher parts do not keep hot enough, unless heated. To furnishthe necessary heat to the moulds, each half of each mould is provided with'recesses 107 for electric heaters 117, attached at required points to the back of the mould, and fed by means of collector rings 108 mounted on the central part ofthe rotating table from an outside source of current, and individually regulated by rheostats or other controlling device mounted adjacent to the mould but not shown in the drawings. Wires not shown in the drawings connect the heaters'with the collector rings 108. I v

To cool certain parts of the moulds which tend to become overheated, each half of each mould is drilled with passages112 through which cooling air. is forced.

The air for cooling the moulds is brought into the rotating table 12 by means of pipe 109 which leads to circular groove 110, whence the air is distributed through pipes 111 to the moulds.

The pouring gate of each mould directly after filling with molten metal is cooled by pouring a definite quantity of water into it. This is done in position 2, by means of a plunger pump operated by cam 35, delivering water through the stationary pipe 36 and nozzles, as shown in Figures 1 and 3.

I claim:

. r l. A casting machine adapted for making storage battery parts, comprising a rotating table and a plurality. of moulds mounted thereon, a removing member mounted with each mould, and means for so, actuating the removing member that when the mould is being filled, the removing member shall project into the mould opening so that-the casting will attach itself thereto. I

2'. A casting machine adapted for making storage battery parts, comprising a rotating 1 table and a plurality of moulds mounted thereon,-a removing member mounted with each mould and adapted to become attached to the casting, means for actuating said mem her so that as the mould opens, the casting by a vibrating horizontal motion is caused to asslime a position midway of the two mould parts. V H

. 3. A casting machine adapted for making storage battery parts, comprising a rotating table and a pluralityof moulds mounted thereon, a removing member'mounted with each mould and adapted to become attached to the casting, means for actuating said memher so as to free the casting from both mould parts, a fixed member in suitable relation thereto, and means for raising said first mentioned removing member so that the pendent {casting contacts with fixed member,and is ren'io'ving castings therefrom.

5. In a casting machine adapted for making parts for storage batteries, a melting pot, a pump for transferring molten metal from said. pot to a ladle, a ladle adapted to feed each of a plurality of moulds insuccession, a plurality. of moulds mounted to rotate about a vertical axis, one part of'each of the moulds being radially movable with respect to the remainder of the mould, a cam to actuate the mould parts, a fork mounted above and adjacent to each of the moulds for removing castings therefrom, said forks being radially movable and a cam to, move said for rs. j

6. In a casting machine adapted for making parts for storage batteries, a melting pot, a pump for transferring molten metal from said pot to a ladle, a ladle adapted to feed each of a plurality of moulds iii-succession, a plurality of moulds mounted to rotate about a vertical axis, one part of each of the moulds being radially movable withrespect to the'remainder of the mould, a cam to actuate the mould parts, a fork mounted above and adjacent to each of the moulds, said forks being radially movable for removing castings therefrom and a cam to move said ment, a fork slidably mounted above and ad jacent to each mould, said forks being radially movable and a'cammounted on the table o actuate said forks.

8. In a casting machine adapted for mak ing' parts for storage batteries, a table pivoted about'a vertical axis, a cam for actuating-the table, a plurality of moulds mounted on the table, the parting lines of the moulds extending "in vertical planes, parts of the moulds being radially movable, a cam mounted on the table to effect such movement, a fork mounted slidably in a frame adjacent to and above each mould, means for raisingsaid forks in said frames, said forks being'radiallymovable when raised and a cam'rfor effecting such movement.

9. Ina casting machine adapted for making parts for storage'batteriesa table axialt ere0n,a fork'slidably mounted in a frame adjacent to and above each mould and projectinginto the upper end of said mould to ecei e a casting t er on, Sa d f r s e g radially movable, cams to cause such movement, cam followers attached to said forks, meansfor' raising said forks in said frames, stationary forks attached to the tops of said frames, said movable forks being carried into close proximity with said stationary forks, when raised, in order to remove the castings carried by said movable forks spring members .on the prongs of said stationary forks to assist in the removal.

10, a casting machine adapted for making parts for storage batteries, a melting pot, a pump for transferring molten metal from said pot to a ladle, a ladle adapted to feed each of a plurality of moulds in succession, a plurality of moulds mounted to rotate about a vertical axishaving the parting lines of'the' moulds in vertical planes and one part of each of the moulds beingradially movable with respect to the remainder of the mould, a cam shaft driven from a suitable sourceof power, means on the shaft to actuate "the pump anda jaw clutch'between the shaft and the means to prevent breakage of the mechanism when the'pump is inoperable. 11; In a casting machine adapted for making storage battery parts, a table pivoted about a vertical axis, a plurality of moulds mounted upon said table, a cam for intermittently actuating said table, a brake mem ber attached to said table, a stationary brake shoe and means'to cause said brake to oper ate intermittently and to cooperate with said earn in bringing said table to rest after each movement.

12. In a casting machine adapted for making parts for storage batteries, a table pivoted about a vertical. axis, a cam foractuatlng i the table, a plurality of moulds mounted on the table, a brake shoe attached to the table and a stationary brake adapted to cooperate with the brake shoe to hold the machine against vibration.

13. In a casting machine adapted for making stora e batteryparts, comprising a rotating taIJle and a plurality of moulds mounted thereon, a removing member mounted with each mould, a pair of fixed tracks adapted to support the casting when freed from the removing member.

l L In a casting machine adapted for making storage battery parts, comprising a rotating table and a plurality of moulds m unted thereon, a removing member mount-- ed With each mould, a pair of fixed tracks with 1% mounted, a plurality of moulds mounted a link belt chain mounted upon each, means for actuating such chains in step with rest of machine, and movable fingers working in said tracks, and means to actuate them so as to catch the castings, as dropped from removmg member, and deposit them on said link belts. I

15. In a casting machine adapted for making parts for storage batteries, a table axially mounted and having a plurality oflmoulds mounted thereon, means for lifting the castings out of said moulds, means for removing the castings from the lifting means, reciprocating arms to receive the castings upon said removal and an endless chain to carry the casting away from the machine.

16. In a casting machine adapted for making parts for storage batteries, a pair of arms mounted forreciprocating motion in a horizont al plane, said arms having a vertically raised portion at'their ends nearest the ma chine, an endless chain lying in the horizontal. plane of said arms and beneath the raised portion of said arms, a ratchet and pawl for actuating said endless chain and a camfor actuating both the arms and the chain from a source of power.

17. A casting machine adapted for making storage battery parts comprising a rotating table and a plurality of moulds mounted thereon, means for successively cleaning each mould, which consists of a pair of outwardly facing brushes adjustably mounted upon a'vertical slide, and means for raising said slide and brushes between the two parts of the mould in its open position. I

18. In a casting machine adapted for making parts for storage batteries, a table pivotally mounted and having a plurality of moulds thereon, a cam for actuating the table, a shaft forthe cam, an additional cam on'the shaft and a set of brushes mounted on a vertical slide and adapted to clean out the mould when lifted therebetween by the action of said additional cam. i 7

19. In a casting machine adapted formaking parts for storage batteries, a table pivotally mounted and having a plurality of moulds thereon, a cam for actuating the table, a shaft for the cam, an additional cam on the shaft, a set of brushes mounted on a vertical slide and adapted to clean out the mould when lifted therebetween by the act-ion of said additional cam and means for blowing air on said moulds mounted with said brushes.

20. In a casting machine adapted for making storage battery parts, comprising a rotatin g table, and a plurality of moulds mount- I M moulds, and means for introducing a definite quantity of suitable powder into said air system.

22. In a casting machine adapted for making storage battery parts, a rotating table and a plurality of moulds mounted thereon, a

system forldusting said moulds comprising a rotating (disk with indentations upon its upper surface, ,a fixed cover plate contacts ing therewith, a reservoir provided wlth a stirring paddle, delivering into a tube of larger area at the bottom than at top pro jecting through said cover plate, a cavity in said cover plate, an air Jet pro ecting into said cavity, and,leading from said cavity, a

" telescoping tube terminating in series of jets adapted to pass between the parts of the moulds in succession.

23. In a casting machine adapted for making'parts for storage batteries, a rotatably mounted table, aplurality of moulds mounted thereon, a pair of guides mounted under said moulds in one position of rotation, a bin mounted on said guides having a larger area at the bottom than at the top, a paddle mov-. able in the bin, a pipe having a larger cross section at the bottom than at the top leading from the bottom of said bin, a disk at the bottom of said pipe having indentations therein, the radius of the disk being greater than the cross section of the pipe, a second pipe parallel to said first pipe having its bottom end facing said disk, a tube fitted into said second pipe adjacent said disk, a cross frame movable in said guides, a third pipe telescoping with said second pipe carried by said frame and nozzles carried by said third pipe, a source of compressed air attached to said tube, a valve in said air supply and a cam to actuate said valve. Q 7

24. In a casting machine adapted for making parts for storage batteries, a furnace, a pump therein, a ladle adapted to receive metal from said pump, a table pivoted about a vertical axis, a cam for actuating the table, a plurality of moulds mounted on the table, a cam shaft driven from a suitable source of power, a water supply pipe, a pump therein,

. a cam on the cam shaft adapted to actuate the pump and a nozzle for spraying the wa ter on a mould. I

25. In a casting machineadapted for making parts for storage batteries, a furnace for melting metal, a piston pump in said furnace and adapted to deliver molten metal to one ofa plurality of moulds, a crank mounted upon a shaft to operate such pump in time with movement of said moulds, and acombi L machine, and a lever for actuating said clutch by hand.

26. In combination, in a casting machine, a two part mould, means for opening and closing said mould, and means for applying pulverized lubricant to the mould faces when separated'c'omprising a plurality of nozzles adapted to be introducedyintothe'space between the mould faces, a supply pipe con nected at one end to the nozzles and at the other endto an air chamber open at the bottom, a reservoir for the lubricant alsoopen at the bottom on the same plane as the air chamber, and a revolvingdisk closing both open bottoms and having cavities inits upper surface adapted to transfer a definite amountof lubricant fromthe reservoir to the air chamber, and means for supplying intermittent air jets to the air chamber.

, 27. In combination, in a casting machine, a two part mould, and means for applying pulverized lubricant to the mould faces when separated, comprising a plurality of'nozzles adapted to be introduced into the space between the mould faces, an air chamber connected to said nozzles, means for introducing a definite amount of lubricant into said air chamber, and means for supplying intermittent air jetsto the air chamber, 7 7 s 28. In a casting machine adapted for making parts for storage batteries, a plurality of moulds mounted upon a revolving table, means for heating said moulds,-and means for delivering a definitely controllable amount of watertoeach mould in succession, said means comprising a water pump, a shaft, a connection foractuating said pump from said shaft, and a pipe leading from said pump to a position above the path ofrotation of said moulds.

29. In a casting machine adapted for makparts for storage batteries, a rotatable table, a plurality of moulds mounted thereon, a source of power for rotating said table, a shaft connected to said source of power, a water pump, aconnection for actuating said water pump from said shaft, and a nozzle attached to said water pump and located over the path of rotation of said moulds.

30. In a fully automatic casting machine adapted for making parts for storage batteries including a melting. pot,a pump, and a pouring ladle, .a plurality of moulds mounted toro-tate about a vertical axis, one part of each of: the moulds being radially movable with respect to the remainder of the mould anda cam to actuatethe mould parts, and a fork mounted above and ad- 40. to prevent breakage of the mechanism when jacent to each of the moulds'so as to receive the casting thereon and to support the casting upon its removal from the mold.

31. In a casting machine adapted for making parts for storage batteries including a melting pot, a pump, and a pouring ladle,

a plurality of moulds mounted to rotate I about a vertical axis, one part of each of the moulds being radially movable with respect to the remainder of the mould and a cam to actuate the mould parts, a fork mounted above and adjacent to each of the moulds,

said forks being radially movable, and a cam to move said forks. l v

32. In a casting machine adapted for making parts for storage batteries including a melting pot, a pump, and a pouring ladle,

. a plurality of moulds mounted to rotate about a vertical axis, one part of each of the moulds being radiallycmovable with respect I to the remainder of the mould anda cam to actuate the mould parts, a fork mounted above and adjacent to each of the moulds, said forks being radially movable, and a cam to move said forks,'the cam for the forks.

having notches which cause the forks to vibrate when commencing radial movement inward.

' 33. In a casting machlne adapted for makmg parts for storage batterles including a "melting pot, a pump and a pouring ladle,

the combination of a plurality of moulds mounted to rotate about a vertical axis hav 7 ing the parting lines of the moulds in vertical planes and one part of each of the -moulds being radially'movable with respect to the remainder of the mould, a cam shaft driven from a suitable source of power,

means on the shaft to actuate the pump and a jaw clutch between the shaft and the means the pump is inoperable.

34. In a casting machine, a revolving table, a plurality of moulds mounted thereon and having passage-ways perforated therethrough, air conduits connected to saidpasing parts for storage batteries including a sage-ways, a water pump, a nozzle connected to said water pump and extending above the path of rotation of said moulds, and means for actuating said pump.

35. In a casting machine adapted for making parts for storage batteries, a plurality of molds mounted on a revolvable table, and means for accurately controlling the temperature of such molds, said means consistingof electric heaters located in recesses in said molds adjacent the edges of the castings in said molds, cold air passages in said molds passin adjacent the inlet passages for metal to said molds and passing through the center ofsaid molds, and means for supplying water tothe upper external surfaces of the inlet passages for metal to said molds and to the metal contained in said inlet passages. 7 36. 111 a casting machine adapted for mak-

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