US1129154A - Rotary casting-machine. - Google Patents

Description

G MACHINE.

Patented Feb. 23, 1915.

4 SHEETSn SHEET l.

IIIIII y,

H. A. W. WOOD. ROTARY CASTING MACHINE, PPLIGATION FILED DEC.18,1911v Lmgyl 5., Patented Feb. 23, w15.

4 SHEETSSHEET 2.

ROTARY CASTING MACHINE.

APPLICATION FILED 1120.18. 1911.

Patented Feb. 23, 1915.

4 SHEBTS- SHEET 3.

H. A. W. WOOD.

ROTARY CASTING MACHINE.

APPLICATION FILED DB0.18,'1911.

Patented Feb. 23, 1915.

4 SHEETS--SHEET 4.

:f nanna tf1:

HENRY 'WISE WOOD, OF NEW YORK, N. Y., ASSIGNOR TO AUTOMATIC FURNACE COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

i ROTARY CASTING-MACHINE Specicationcf Letters Patent.

Patenten renee, raie.

Application led December 1S, 1911. i Serial No. 666,525.

casting soft metal ingots in large quantities.

The principal objects of the invention'are to provide a .practicable and eicient machine whereby. such ingots can be cast rapidly in a continuous manner ;I to provide a construction in which the supply of metal to the molds will be proportionate to the' rate of delivery of the lngots from the molds; .to provide a construction in which an endless series of molds can be moved by a motor or other convenient source of power and the metal supply operated bythe same source of power at the same time;vand to provide means ywhereby the molds can be operatedy independently of the power without necessitating the attention of an attendant to the disconnection of any of the parts. Another important object of the invention is to provide an improved cooling system for the molds which by a continuous current of water will cool the inner surfaces of the molds both while they are filled and while they are empty, and will also cool the outer surfaces of the molds which at the time are filled with metal.

Other objects of the invention are to provide an improved form of rotary mold wheel in the circumference of which the molds are located, and an improved metal pump.

Further objects and advantages of the invention will appear hereinafter.

Reference is to be had tothe accompany ing drawings, in'whichj Figure 1 is an endelevationof a rotary casting apparatusvconstructed in accordance with this invention Fig. 2 `is a side view of the same showing the metal sup ly device in central longitudinal section;v ig. 3 is a sectional view vertically through the center of the casting wheel showing 'certain parts in elevation; Fig. 4 is a central sectional view of the power transmitting` disk shown in Fig. 3; Fig. -5 is a fragmentary elevation of the same; Fig. 6 is a central sectional view of a worm wheel for operating the said disk; Fig. 7 is a fragmentar y sectional view of the cylinder casing; Fig. is a fragmen hereinafter.

. tary central sectional view of the mold wheel; Fig. 8 is a'pla'n of the pump; Fig. 9 1s a horizontal sectional view of the pump on the llne 9-9 of- Fig. 10; Fig. 10 is a sec- -tional, view on the line 10-10 of Fig. 9;

Fig. 11 is a plan of a detail; and Fig. 12 an elevation thereof with an adjacent part in Section.

The invention is shown in a form comprising a main frame 10 supported on abase 11. The `frame is `provided -with a cylindrical casing 12 'extending therefrom on one side and provided at the end with a plate 13 which T will call a cylinder cover. The casing is in the form of a circle cut away on an inclined chord for a reason that will appear frame and'casing respectively are trunnions 14 of a rotary mold wheel 15. For the purpose of driving this mold wheel a motor 16 is shown having a driving shaft 17 provided with a worm 18 driving a worm wheel 19. This worm wheel is loose on a shaft'20 which isjournaled on the frame and a projection of the plate 13. Fixed on this shaft 20 is a driving disk 21 having a depression 22 yin the face thereof adjacent the worm wheel. Thisdepression is beveled and has a square shoulder at one end. The worm wheel is provided with a spring-pressed plunger 23 adapted to enter said depression and to bring up against said shoulder when the worm wheel is rotated. This forms a positive connection between the worm wheel and disk so that the shaft 20 will lbe driven positively by the motor. But it will be 0bserved that if the shaft 20 isvrotated in the same direction, as for instance, by means vof a removable hand crank 24, the shaft will be rotated without interfering with the worm Wheel because the plunger 23 will ratchet over ther depression 22. A pinion 25 on Athe shaft 20'constantly meshes with a large gear 26. This gear 26 is fixed on the end of one of the trunnions 14 so that the mold wheel will be operated positively either by the motor or by the crank handle.

The mold wheel -is provided on its cir f cumference with an endless series of cavi- The mainL ties 260 ponstituting `molds. l frame 10`is provi/ded with a member 27 removably secured thereto'and having an integral funnel 28 j projecting upwardly therefrom at the'top of, the frame. It will be understood, of course, that this mold J ournaled in bearings onthis wheel fits within the interior cylindrical casing andas it passes the funnel, metal therein will flow into the molds. Y. The wheel is intended to be rotated in the directionof the arrow in Fig. 1 with sutlicient rapidity to allow the :metal t'o congeal'in the molds and form ingots or pigs. When each mold comes around to the bottom each ingot, then being bottom side up and not supported at its outerl side, will drop down into a delivery chute 29. The reason for making thecasing 12 constitute only a little more thanhalf a circle will be .obvious nowas the cutaway portion exposes the mold wheel and leaves an open space through which the ingots are discharged.

In order to cool the .metal efl`ectively so that the moldiwheelcani be operated with sullicient rapidity for practical purposes,

cooling water is introduced through a pipe 30 which extends through 4afstuling box 31 into an axial passage 32 in one of. the trl1nv nions' of the mold wheel. The mold Wheel is hollow and is provided with a partitiony 33 centrally located and transverse to its axis. This partition isimperforate at the center but is provided with a series 'of perforations 34y near its edge, adjacent tothe inner walls of the molds260. Therefore the water entering on one side of this partition will pass to the other side through these perforations and. comeinto direct contact with the heatedinner Walls of the molds. It will theii-pass through the other trunnion .and

through a; 4discharge pipe 35. It is then directed preferably into ya space 36l in vthe casing 12 whichconstitutes the outer wallof the. molds as they to the discharge point. The water is dischargedthrough a pipe. 38 or the like. It will be seen that in this way the interior wallsofthe molds are cooled constantly by fresh cool water whether they. contain metal or not. The outer walls of the lmolds that contain the-metal are cooled by the water in thepassage 36 and the remaining molds after they have been emptied are cooled on the outside only by passing through the air. In this way atherough cooling ofthe molds is secured? andthe metal is hardened therein in a minimum of time so that the wheel can be operated with a practical degree of rapidity.v i

On the shaft 20- is located a pulley 40 which by means of belt or rope drive 41 drives a pulley 42 o'n a shaft 43. This shaft is located in a pump in a molten metal pot 44 which pump is mounted by means of anadjustable plate 45 on a bracket 46. This bracket is vertically adjustable by means of bolts 47 and slots on the frame 10. On the lower end .of the shaft 43 is iixed a bottom plate holder 440 having .in the lower endy thereof a diametrical slot 450 in which is a slidable'bottom plate 460. These parts are pass from the receiving carried in a cylindrical chamber 4 70 in the bottom ofthe.-pump.. Theshaft 43 enters this cylinderl atf a-=p0int at one side of its center. Therefore as the bottom plate holder revolves, the' bottom plate is made to slide with respect to it in the chamber. This causes the `metal to flow from the body of the melting ,potthrough an opening 48 into the chamber 470 and out through an opening 49 into a chamber 50. From here it passes into a. pipe 51 which carries the molten metal intothe top of the funnel 28. The shaft 43A is shown `as provided with a mixer 52 above the chamber 470.

. The chamber 50 is provided withy a relief valve 54 inthe top thereof mounted on a shaft 55, the upper end of .which passes through a hole in the plate 45. Fixed to the shaft 55 is a collar 56 underneath the plate 45 havinga camsurface 57 which'engages the.end of a screw 58 on the plate 45. The collar'56 has a handle 59 by which it can be turned to force the valve 54 down by means of the cam surface 57 on the collar. By leaving this valve open, the pump can be run wlthout .forcing metal through the pipe 51. In this case the metal simply circulates iroimd into the melting pot.

With the machine running and the relief` valve closed, the metal will run constantly in proportion to the rapidity of rotation of the shaft 20 from the mouth of the pipe 51 into the funnel. Thus it lills the molds as they pass under the funnel. As the ingots are cooled on both sides they are discharged from the machine and then the molds continue to be Cooled'by the Water inside until they complete the cycle. When the casting operation. is to be completed, the relief valve may be opened allowing the machine to continue its rotation without receiving any more metal so that all the ingots can be delivered.

of accomplishing the same re- Anotherway sult is to stop the motor. The moldwheel by the handle 24 can then be turned around to ,empty the molds.

While I have illustrated and described a preferred embodiment of the invention, I am aware that many modifications can be made therein by any person skilled in the art Without departing from the scope of the invention as expressed in theV claims. Therefore,.I do not wish to be limited to all the details of construction herein shown and described but vv hat do claim is l 1. In a rotary casting machine, the combination with a driving shaft, of a wheel rotatable. thereby having a :series of molds around its circumference, a pump operated by said shaft for normally supplying metal to thev molds when the shaft rotates, and means for rendering thepump inoperative while the shaft continues to operate.

2; In a casting machine, the combination manana i m with a driving shaft, of a series of molds operated thereby, means operatedI by said shaft forl constantly su plying metal to the'molds when the, shaflt) rotates, a crank handle, and means connected with the crank handle for moving the molds by hand independently of said shaft. I

3. In a casting machine, the combination ofl a driving shaft, a wheel having a series of molds in the edge thereof, means comprising a second shaft adaptedV to bero tating the molds.

5. In a casting machine, the combination of a driving shaft, a wheel constantlyconnected therewith to be driven thereby, a second shaft on which said wheel is loosely mounted, a disk fixed onthe second shaft, a ratchet device for transmittinga'motion of rotation from said wheel to the disk,'a series of molds, means connected with said second shaft for rotating the molds, and manually operated means for rotating said disk and molds independently of the wheel.

6. In a casting machine, the combination of a driving shaft, a wheel connected therewith to be operatedthereby, a second shaft on which said wheel is rotatably mounted, a disk fixed on the second shaft, means for transmitting a motion of rotation from said wheel to the disk in one direction vand .not

in the other, and a series of molds connected with said second shaft v'to be rotated thereby, wherebythe independent rotation of the second shaft in the same direction will rotate the. molds without moving said wheel.

7. In a casting machine, the combination of a driving shaft,'a Wheel driven thereb a-second shaft on which the wheel is lo y mounted, a'disk fixed on said second shaft and p'rovided with a series of inclined notches in the face thereof, a springressed plunger carried by the wheel in position to enter said notches -as the wheel rotates and cause the disk to`rotate with thel wheel, a series of rotatable molds, and means operated bythe second shaft for rotating said molds about a center.

8. In a castin machine, the combination with a frame, 0% a driving shaft journaled thereon, a second shaft,a disk fixed on the secondshaft, a Wheel constantly connected with the drivin shaft, means for transmitting a motion f rotation from said wheel to the disk, a series of molds, means connected with the second shaft for rotating the molds, and means for-rotating said disk and molds independently of the wheel.

' 9. In a casting machine, the combination of ahollow rotary mold disk having integral mold cavities at its circumference and provided with a partition transverse to its axis of rotation having a row of perforations closely adjacent to the cavities, means for introducing cooling iuid on one side of the partition and discharging it on the other, and means for leading the cooling v v,fiuid in a path adjacent to the exterior of said mold cavities. 4

10. In a casting'machine, the combination Y of a hollow rotaryv mold disk, an` exterior witnesses.

cooling device for said disk, and means for connecting the exterior cooling device with the interior ofthe disk.

11. In a vcasting machine, the combination with an Yendless series of movable molds adapted to receive metal at one point and discharge castings at anotherZ of means for cooling all the molds on one side, and meansA for cooling on the other side those molds moving from the receiving point to the discharging point.

In testimony whereof I have hereunto set` my hand, in the presence of two subscribing y ',HENRY-Ag. yWISE WUOD. Witnesses:

lBnonwnN W. Jonas,

Immun C. JoNns.

Images