US1001005A - Apparatus for casting metal under pressure. - Google Patents

Description

s. ENOMOTO. APPARATUS FOR CASTING METAL UNDER Pnnssunn,

I APYLIOATIO]! FILED JUNE 11, 1910. 1,001,005 Patented Aug. 22,1911.

5 SHEETS-SHEET l.

. fiazu'obm wz-o,

s. ENOMOTO. APPARATUS FOR CASTING METAL UNDER PRESSURE.

APPLICATION FILED JUNE 11,1910.

1,001,005. Pa ented Aug. 22.1911.

5 SHEETS-SHEET 2 g l kwaazww W 3y S. ENOMOTO.

APPARATUS FOR CASTING METAL UNDER PRESSURE.

APPLICATION FILED JUNE 11, 1910.

1,001,005. Patented Ali ;22,1911

6 SHEETS-SHEET 3.

a s. ENOMOTO. APiKARATUS FOR CASTING METAL UNDER PRESSURE.

APPLICATION FILED JUNE 11, 1910.

Patented Aug. 22, 1911.

IMMD

s. ENOMOTO. APPARATUS FOR CASTING META v L UNDER PRESSURE. APPLICATION FILED Jun 11, 1910.

Patanted Aug. 22,1911.

6 BHBBTBSHEET 6.

fade;

SEKIIGHI vIEN'OIVIO'IO, OF TOKYO, JAPAN.

APPARATUS FOR CASTING METAL UNDER PRESSURE.

To all whom it may concern:

Be it known that I, Sumter-11 ENOMOTO, a subject of the Emperor of Japan, residing at No. 11 Imairi-Cho Shibaku, Tokyo,

Japan, have invented a certain new and useful Improvement in Apparatus for Casting Metal Under Pressure, of which the following is a. specification.

This invention relates to apparatus for casting precious and light metals such as gold, silver, or aluminum, and is particularly designed for small. work and where accuracy and high finish are desired.

One of the objects ofmy invention is to provide an apparatus whereby the molten metal 18 forced into the mold cavity under pressure.

The invention will be more fully described In connection with the accompanying drawings and will be more particularly pointed out and ascertained in and by the appended claims.

In the drawings:--Figure 1 is a. view in side elevation of an apparatus embodying one form of my invention. Fig. 2 is a similar View with lower parts thereof in section. Fig 3 is a plan view; Fig 4. is a. fragmentary side elevation of a portion of a blow pipe and the actuating means therefor. Fig. 5 is aseotional view on line 55 of Fig. 6. Fig. 6 is a sectional view on line (3-6 of Fig. 5. Fig. 7 is a vertical sectional view on line 7-7 of Fig. 2. Fig. 8 is aperspective view of a portion of one form of flask. Fig. 9 is a vertical sectional view thereof. Fig. 10 is an enlarged sectional the bi'irners in the furnace. Fig. 11 is a perspective view of one form of flask with a portion thereof removed. Fig. 12 is a perspect vc Viewot the removed portion. Fig. 13 is a vertical sectlonal view of the flask with the pattern therein. Fig. 14 is a sectional view of the flask with the gate closed by mica 01' like material. Fig. 15 is a perspective View of the flask showing the mica slit in the form of a cross.

Like characters of reference designate sim' ilar parts throughoutthe-different figures of the drawings. A

As shown theinvention includes a castipg furnace indicated as a whole at A. A supply regulating device is indicated as a whole at B. T a

In the further description of the invention reference will first be had to the furnace A, exclusive of the flask and. its appur- Specification of Letters Yatent.

Application filed June 11, 1910.

view of one of Patented Aug. 22, 1911.

Serial No. 566,400.

tenances, and secondly to the sup ly controlling apparatus B. Thirdly the ask and.

its appurtenances will be described to show the relatlon oi the combination of mechanism.

Referring to Fig. 2, the furnace A is mounted upon a base land is provided with a wall 2, of suitable material, and an outer casing 3, which is preferably of metal. The casing 3 is provided with a plurality of air inlet holes or openings 4- and also with a door 5 having a suitable observation opening 6 closed by mice or the like. Within the furnace there is provided a suitable flask support- 7 resting upon uprights 8 which lat-- ter project upwardly from the base 1. The flask support 7 is provided with an opening 9 and a suitably recessed portion 10 upon which latter the flask may be mounted. Suit; able burners are provided in the furnace, and in the construction shown, a burner ring 11. is mounted upon the support 7 and extends about the furnace. A supply pipe 12, for the ring 11, extends downwardly therefrom and connects with an extension 13. The" below the upper end of the outer member 17. l

A- cap 19 prevents material from falling into ,the inner portion of the burner 14. Suitable outlets 20' provide egress for the flame.

The supply controlling apparatus or de" vice comprises an upright 21 extending upwardly from the base 1 and provided with a bore which may be closed at-its lower end by a plug 22. Said upright is provided with a passage 23 forming a communication between the bore and the extension 13. suitable source of supply of gas 'or other combustible material is conveyed to the up right 21 by a pipe or hose 24. The regulating apparatus includes a rotatable member comprising a lower tubular portion 25, rotatively. mounted in the bore of the upright 21 and provided with an opening 26 for automatically closing and opening the passage 23 to control the supply to the burners 11 I i wind 14. Near the upperend of the lower hollow portion there is provided an opening 27, preferably elongated, to afford a supply of fuel to a blow-pipe, now about to be described. The upper portion ZS'ol the controlling device is provided with an open dium troin the reservoir 3-1. A gage 36 provided on the reservoir to indicate the pressure therein. An operating lever 37 is provided with a handle portion 38 and is pirotally mounted at 39 to the air or other pressure pipes 32. The free end of said lever 3'7 provided with teeth 40 and is slidably mounted in the opening 2-9. The teeth tf) engage With a pinion 41 n'iounted upon a shaft 42. the pinion being disposed in a reoess h? in the upper portion 28. On the outer end of the shaft 41-2 nun'mted a pin ion or which meshes with spur teeth 45 on a pinion 46. The pinion 46 also has bevel teeth efwhioh mesh with a bevel pinion or gear 48. The gear Wheel 46 is mounted upon astud shaft 49 secured in any desirable manner to the upper part 28.

A blow pipe is indicated-at 50 and is preferablyin the form ofan elbow having a discharge end 51 and an intake end 52. Theintake. end-is provided With an opening 53 for admitting the fuel thereto and is mounted in .a tubular'bearing 5 secured to the standard 2h The bearing 54 extends into the standardfil and forms-a communication between the opening 2 and the opening The upper endof the blow pipe is provided with a"'journal'55 mounted in a bearing 56 which. latter is secured to the upright 21. The bevel 4:8 is secured to the journal. to rotate the same. An air supply is provided for the blow pipe and as shown thesame is in the 'form. of an extension -57 projecting;- laterally from the blow-pipe between the bearings thereof. The extension 57 is provided with a v discharge end 58 located within the blow pipe and disel-iarging in the direction of discharge of the gases from the blow pipe.

E lt vill. be seen from the foregoing that the controlling device may be rotated in the up right 21 without cutting olfthe supply from the blow pipe although. rotation serves to out off the supply to the burners ill and 1-1.

When the lever 37 is operated the gearing. just described, serves not only to rotate the blow pipe but out off the supply of fuel thereto. -To otter-tproper om'nl |':;-:lion in the blow ipipe a suitable supply of air may be;

supplied through aflexihle ronnwliou I will next describe an automatic form of nozzle :lor admitting pressure during the casting operation and. referenl'e Will be had to Fig. 7. I

In the form shown a sleeve 60 is threaded on to the lower end of the pipe 32 and is provided with an annulus 61 through which the valve seats on top of theannulus 61 and the opening of the latter forms onset the seats for the valve. The valve 62 is mainspring 63 interposed therebetween and the lugs 64. on the pipe 32. A cap 65 has tl'ireaded engagement W'ltl't the sleevefil) and thevalve 62' projects. A suitable packing 66 is inolosed by the cap 65 and surrounds the valve 62. The nozzle 67 provided ith asleeve 68 which extends upwardly about the parts just described, and which is provided with an inwardly pro iecting shoulder 69 adapted For engagement With the upper end of the sleeve 60 to limit downward movement of the nozzle with respect to the pipe the sleeve 68- A thimble 71 is threaded into the lower end of the nozzle and isprovided with a plurality (it-openings 72. In order to maintain the parts in the position shown and to provide for yielding movenientof the nozzle upwardly with respect to the pipe 32 aspring 73 is-interposed between the cap 65 and the upper ends of the thimble 71. An impertorate part of the .up'perwall of the thirnble 71 is. arranged for engagement .with the lower end of the valve 62. The lower end of the nozzle is prefer-ably eularged at 73 and may be provided with suitable paokings, at 74. for obtainingan air tight juncture with the part to which pressure'is to be supplied.

A flask 75 is mounted upon the support 7 and is provided with a removable gate 76. The gate'itl isprovided withfan opening 77 and a flask is also provided with an annular teria]. Superimposed upon the flask 75 the gate 76 is a hinged reflection our???) posed abreast of and inreoeiving relation to the side thereof is a grooved portion 82 for reception of a suitable handle for removing so that upon continuous movement of the pipe 32 the valve 62 is bi'ought into engorgement with the imperforate part of the thimble 7].. .lhisaction, against the resistance of spring 73 unseats the valve 62 against the notion 'of the spring (",3 and allows the a tapering valve'GQ projects. The head ot tained in. a closed position upon its seat by a is provided with an-opening through which A packing flange 70;,formsan air-tight joint between the pipe 32 and shoulder 78 for retaining the investment Inaprovided with an opening 80 shown disthe blow .pipedischarge'ol. An air hole 81 I is arranged in the top of the cap 79 and in. z

the '(cap 79. 'lVhen the lever 37 is moved dou-fnwardly the packing; 7.4- engages the. cup 79 and arrests movement of the nozzle pressure to flow through the opening 81 into separable part is indicated at 85.

means may be provided for securing the.

the ca 79. Downward movement of the levers 3 through the gearinghereinbefore de' scribed also turns the blow-pipe in its bearirag so that the supply of fuel thereto is cut 0 the flask and the manner in which theymold is prepared for casting, reference being first had to Figs. 12 to 14.

In the form of llask herein illustrated one side thereof, 82, is divided on. a horizontal line at 83 and on a vertical line at 84. The Suitable parts 82 and 85 together. The cask is inverted as shown in Fig. 14k, and the part is filled with a suitaliile investment material, as illustrated, and a pattern indicated at 86,

is set in the soft material in the desired po 'sition." The gate 77 joined to the pattern wax, as indicated at 87. The part 82is provided with a. plurality of air dischaige openings 88 and waxed threads or other suitable combustible material, is disposed from the openings 88 to the pattern 86 and extended through the investment material, as shown in Fig. 14. The part 85 is next secured to the part 82, shown in Fig. 14, and the part 85 is filled with investment material from its uppermost end.

When the investment material hardens'to some extent the inverted cask is disposed upon the support 7, as shown in Fig. 2 with the gate 77 disposed downwardly as indicated in Fig. 14. With the regulating device in the posit-ion shown in Fig. 2 in full lines thecpening 26 permits a flow of fuel I tending out of the openings 88 also .meltto the. burners and the cask and its contents are slowly heated. The wax pattern melts as the result of the high temperature, and runs out of the gate 77. The waxed threads exthereby leaving air vents connecting the mold cavity wlth the exterior of the flask. Any wax that fails to run out will of course be entirely eliminated asthetemperature rises.

After the pattern has been melted and eliminated so that a mold cavity is formed in the flask the latter, is inverted, with the gate 77 in the position shown in Fig. 2. The gate 76 now forms a cavity or crucible for receiving the metal. .Preferably imme' diately abovegthe gate opening 77 I place a sheet of mica 89 as shown in F 14 and 15. The mica is provided with a plurality of slits 90, which may as shown he crossed, and the metal is disposed rpon the mica. The heat reflection cap 79 is placed in position as shown in Fig. 2 with the opening 80 in alinement with the blow pipe 50. The lever 37 is in an upper position and also in the with a hollow lower extension 25. The blow I will next describe the construction of' and air and the flame is directed upon the.

metal supported upon thc' mica 89. During this operation the burners 1.1 and 1 1 are also heating the hash.

When the metal reaches a sufliciently molten state, or is in a condition of fluid to properly flow, the lever 37 is swung about to the dotted line position which operation serves to cut ofl the burners 11 and 14, by turning the opening 26 out of register with the passage 23. However the blow pipe continues in operation because of the elongated opening 27. As the lever 37is lowered the gearing swings the blow pipe laterally thereby cutting off the same from its source of supply of fuel. The COIltlIltlOllS move ment. of the lever 37 brings the packing. 74 of the nozzle into engagement with the top of the reflection cap 79. Vhen movement of the nozzle is arrested by such engagementiurther downward movement of the lever brings the valve 2 into engagement with the upper wall of the nipple 71 thereby unseating the valve and allowing pressure to flow through the opening 81 and opening 72 thereby forcing the same through the gate 77 and into the cavity, the slitted portion of the mica yielding to permit the metal. to How through the gate 77.

In place of the mica 89 a ladle 91 may be disposed in the gate, as shown. in Figs. 8 and 9. The lower end 92 covers the gate 77 and the other end 93 is disposed in an inclined position in a recess 94. Upon expose thetop and sides of the same, and a cap covering the metal and said top wall portion and provided. with an interior arehed heatreflecting surface acting upon theexposed portions of the nietal, and means for projecting a flameinto said cap to fuse the metal.

2.An apparatus for casting light and precious metals comprising in combination,

a flask containing a. mold cavity and having a top wall portion on which the metal is supported, the 'top wall portion diverging widely laterally from the point of supp ort of the metal to expose-the top and sides of the same, and a cap cover-mg the metal and into the cap 79 and upon the molten metal I the top wall portion and providedwith an interior heat reflecting surface actin upon the exposed portions of thelmeta-han means.

for projecting a flame into said cap to fuse the metal.

3. An apparatus for tasting light and precious metals coi'nprising in mmliination, a flask containing a moldcavity and having a top Wall portion on which llie metal is supported-the top wall being conical and inclined laterally at a relatively greatangle fromthe point of support of the metal to expose the top and sides oi the same, and a cap covering the metal and top wall pm.- tion and provided with a sen'ii-spherical interior heat reflecting sin'face acting upon the exposed portions of the metal, and means forprojecting a flame into said cap to fuse the metal.

4. An apparatus .for casting precious and light metals comprising in combination, a

flask containing a mold and its cavity andprovided with a heat structure connected.

with the cavity and arranged. to receive. and act as a cruciblett'or the metal, a heat reflecting cap covering the metal and the heat structure and provided with an interior heat reflecting surface, means projecting a. lame through the cap to .fuse the metal andpro jecting fluid pressure through the cap to force the molten metal into said cavity. 5.-An apparatus for casting precious and lightv metalscomprising in cmnbinaition, a flask'cor-itaining a. mold cavity, a support for the metal communicating ivith'saidcax ity, a device for hovering theppeningor communication lietiveei'i said support and cavity, and serving to support the metal,

means for melting the metalon said device,

I ity and coi'itrol-ling the passage of fuel to.

light metals comprising in. eombinatiomrll and fluid pressure means acting to move said device'to permit the molten metal to flow light. metals con'ipri'sing in combination, a,

flask in which' a mold and cavity are con tamed, a support for the metal normally closing ingress to the cavity, means for heating the metal on said support; and means acting to move said supportto provide ingress of the molten 'metal to the cavity.

.8. An apparatus for casting precious and furnace, provide with heating meansftt flask support. therein, a flask eontaining'a mold and cavity with a-paltern in the cavity adapted to be melted, said flask having openings for the'palttern to discharge there through. said flask, and supportbeing formed and arranged topermittheflask to heating the metal on said support, a means flask support thereimsaid flag r.containing' mold and cavity with a .pattes nin the'c'avrt light metals comprising in combination, a 5.2.)

be placed thereon in either of reverse positions, a gate structure for the flask communicating with the mold cavity therein adapted to act as a crucible for the metahineans for heating the metal in said crucible, and

fluid pressure means for forcing the molten metal into said cavity. 9. an apparatus for casting precious and light metals comprising in combination, a furnace provided with a plurality of burna flask support in said furnace, aflask containing a mold Wit-l'r a pattern in the; cavity of tl1e,mold,. adapted to be melted, a gate for saidfiask communicating with said cavity, said flask and support being arranged to ermijt the flask to be inverted thereon. and one of said burners being dis posed so as to direct its flame against the gate of the-inverted flask. 10. An apparatus for casting precious and light metals comprising in combinatioln'a flask in which the mold andcavityare contained. a support for the metal normally closing ingress to the cavity, means for acting, to movesaid support to permit in gress of the molten metal to the cavity and forcing said molten metal-info saidf'cavity.

, 11. An apparatus for castinglprecious and. light metals comprising in combination, a; flask containing a mold and a. cavity, a. gate for supporting the metal va'nd adapted to actas a. crucible therefor and communicating with the-cavity. means for heating the metal in said crucible, and rotatable and longitudinally movable fluid pressure mechanism for controlling passage of fuel to said means. and forcing the molten metal in said crucible into said cavity.

12 An apparatus for casting precious and .105 light metals comprlsingm c0mb1nat1on,.a

flask in which the mold and cavity are contained, a support for the metal normally closing ingress of the' neta-lto the cavity and'adaptcd for movement. after; themetal is melted to permit ingress thereof] to the cavity, and means forheat-ingt'the metal-on" said support. i

13.. An apparatu s for casting preciou'sand furnace provided with" housing imelan's,

light metals co'mpri'si'ngin combination, a}. 1 15 adapted to be melted, sa-id flask" having opening for the pattern to discharge thereto 12o and the flask and support being formed and".

arranged to permit the flask to be placed thereon in either of reverse positions, 114; An apparatus for casting precious and furnace provided with heating means, a flask sup-port in said furnace, a, flask containinga mold with a: pattern inthe cavity .of mold adapted to be melted, said "mold having a gate opening to the pattern, and 1 said flask and support being arranged to permit the flask to be inverted thereon to permit said heating means to melt the pattern. i

preclous metals comprising in combination,

a flask having a metal supporting portion with Widely diverging metal supporting walls arranged to expose the top and sides of the metal thereon,

and a cap covering the metal and provided with an interior heat 15. An apparatus for casting'light and:

. 15 In testimon whereof I aflixmy signature in presence'o two witnesses.

p SEKIIGHI ENOMOTO. Witnesses I UHAG'HI ISHIMARA,

YAsqNosUKE FnKUKIm.

Images