US1766093A - Mold - Google Patents

Description

June' 24, 1930.

A. T. BATEMAN ET AL MOLD , 1928 2 SheetsSheet Fi led J11 lg 50 MOLD 1.928 2 Sheets-Sheet 2 Y, 0 r 9 f w a 3 2 W a a w Mk Z d 2 0% M 2 2 4 4 x a, H 37 i W/ 10 v 9 3/ y I x 2 0A 1N 4 0 f 4 j d A. J 7 GJ June 24, 1930.

A T. BATEMAN ET AL Filed July 50,

Patented June' 24, I

'I- $193 N 1;. -j

* Application filed July 30,

The invention'relates' to molds and refers 7 more particularly to molds'for'use" in "castin'g hollow articles One of the-objects of the-invention is a to provide an improved permanent mold, which; isfiso constructed that it-may be readily; operated at a rate of'spe'edtoma'intain a'sufficiently high temperatureftopr'oduce good castings; Another object' is to'pr'ovide an improved mechanism for actuatinglthe core. "Further objects of the invention reside in the "novel features of construction and combinations and arrange ments ofparts as more fully hereinafter set f t-1 j Tf l In the-drawin'gs-:w q; Figurel is a" plan viewoflthe mold, embodying our invention; 1 1 Figure 2 is an endview .partlyin section th e f); v

Figure 3 is Figureis a similar-view of a'modified' construction of core'actuating mechanism;

Figure 5 is across section on the line 5-5 of F-igurei. H I V 1 v vertical sectional "view 4 The mold' embodyin'g the invention he been developed'in casting motor casings for vacuum cleaners from metal of relatively high crystallization" shrinkage and relativelylow fusing point, such 'as aluminum and its alloys,jand, as shown, this'mold has the permanentvmetal mold sections 1' and 2, which are" pivotally connected at one end by the vertical pin 3 and which are adapted to.

be suitably connected at the other end when in closed or casting posi'tionjat which'time they cooperate to form the downwardly opening cup-shaped mold cavity 4; The mold sectionsr est; upon the support 5, which is in the nature of a table and in which the pin v3 is mounted. The casting which is 4 formed in this mold has the opening 6 in its closed end and the external fiat face 7 in its side adjacent the opening 6. The casting also has the opening 8 in its side in-alignment with the flat face 7 and adjacentits open end. 7 I .7 t

9 is a permanent metal main core which is adapted to be inserted upwardly into the mold cavity and to bev withdrawn downi: ;IIUR.TQfi3ATnMA1vgr n) hiv in w TRIS-771KB, on tween, Mic IGAn; AssIenoRs 'ro p Z'BQ N ALUMINUM 8a nAssconronncriomoryDETROIT,'Micniemv, 'A.CORP.ORA-

wardly therefrom. '10 isa second permanent 1 metal core which :is adapted to'be inserted downwardly into the mold cavity and with drawn upwardly therefrom. This second core has a -portion, l0"which is engageable with the core9 to form the opening 16 and a fiatfaced': portion 10 which is adaptedto' form -the fiat face 7 llis atthird 'pe'rmanent metal core which is horizontally reciprocable into and out of the moldcavity and is adapted to'form the opening 8. This third core'is suitably guided to move in a rectilinear path by'being made to fit in the guideway- 12 formed in the upper. face of the support 5. 13 is a horizontally movable lever pivota'lly connectedat 14: to thelsupe port 5 and pivotally connected intermediate its endsby-the pin 15 to the core Sinceconsiderable force is often re uired 'to'withdraw the main core 9gafterthe casting has been poured, we have provided toggle linkage for actuating the core, andsince 1t in a rectilinear path, we have provided means for guidingthe core to move" in a recilinearpath and we-have arranged the connection between the toggle linkage and the coreto permit this movement; Indetail, 1 6 is a bushing encirclingand guiding v the core,this bushing being rigidly secured to the support 5=and preferably extending upwardly therethroughto form a pilot or stop fin the nature of an annular shoulder is essential'that the "core be gui'dedtoiinove t gage in keyway s 18 extending longitudinally in the "bushing." 19 is 'a link pivotallycon nected'f at 20 to the lug 21' upon the bushing '16,- and 22 is a lever pivotallyconnected at one end to the lower end'of the link 19 b the pin23, this lever extendingpreferably at right "angles to the line connecting the keys 17'and being pivot-ally connected'at 24 to the core. The other end of the lever is pivotally connected to the toggle linkage i 25',- which comprises the toggle links 26 i and 27 pivotally connected together at 28. The lower end of "the toggle link 26 is pivotal'ly 1 f responding'mechanism shown in Figures 1,

2 and'3, mainly Vby providing an adjustable connected by the pin 29 to the 1ever'22. The

to the toggle link and extending at an "angle therefrom for actuating the same,- Thearrangement issuch that When the main core is in casting position, as determinedby 'the collar 83 which is adjustably threaded upon the -maincore' and is adapted to abut; the lower end of the bushing 16, theco'm- ,mon pivotv 28of the toggle links extends adjacent to the plane extending through the axes of their other pivots 29, and 30, and

I V v i'handlever. Thearran ement alsoprovides great-leverage for fwit drawing the vmain core from the cast ng and furthermore provides the greatest leverage during the initial 7 portion of the I main core.

withdrawal movement of the jThe lever 22 is resilient to a sufiicient extent to'flexyand the movement'ofthe hand lever .32 1and' toggle linkage 25in a;di'rection'to r aise the main core 9 to casting posisuring tion is such that the lever'isfiexedafter the collar33 abuts the bushing 16,'thereby asprop r positioning of themain core in its casting position,

In the-modifications shown'in Figures l and 5, the mechanism for actuating the mainicorel of the mold differs from the cor-V con'nectionb'etween the lever .34, which is pivotally'connected to the main core, and

the toggle linkage 35. This togglelinkage comprises the toggle links I 36 and 37 which are pivotallyconnected to each oth'er at 38. The toggle link 36 is U-shaped and isjconnectedto the lever 34by means of the eyebolt and the pin 40,the eye-bolt extending transverselythrough the base 41 of the toggle link and being adjustably secured thereto by means of the" nuts 42 threaded o upon theshank of the eye-bolt and abutting 50 opposite sides ,ofithebase;

What We claim s our invention is i iil-(In' a mold, the combination with hori zontally movable pivotal permanent sections adapted f to cooperateito form a vertically extending mold cavity, of a vertically movable permanent core adapted to be positioned in the' mold cavity, and guiding means for said core formingastop for said sections.

2. In a mold, the combination withhori-j zontally movable pivotal permanent sections adapted to cooperate .to form avertically extending cmold cavity, of a. horizontally V movable permanent core adapted to be p0si tioned in the mold cavity, vertically movablecoresadapted to be positioned in, the;

mold cavity and" contact with each other, and guiding means, for one of said cores forming a'stop for said sections.

3; The combination with a support and a permanent mold, upon the support having a mold cavity, of a permanent coregadapted t'o be positioned'withinthe mold cavity and V lever pivotally connected to said link and fThe combination with a support. andra to be withdrawntherefrom, a pivotal link, -a

provide for rectilinearmovement of the core. j the handle is inclined toi'vardthemold,sections, landQ, thereby automatically holding. the main core inits casting position through both; theitoggle levers and the weight of v the manent'core adapted tobe'positioned with V in the mold cavity and to be withdrawn therefrom, a member securedtoi the support:

and forming a bushing for 'theycore, a link ing the latterto actuate vthe core; V o

5. The combination with a. permanent mold havmg a mold cavlty, of a permanent I v V core adapted to be positioned within-the V mold cavity'and to be Withdrawn therefrom,

toggle linkage, a lever connectedtosaid core pivotally connected toand dependingfrom' and toggle linkagefor actuating theformer we from the latter, and means for adjustably connecting said lever to. said toggle linkage. 6. The combination with a permanent mold having a mold cavity, of a permanent core adapted to be positioned -within the mold cavity and to be ithdrawn therefrom, a pivotal link, toggle linkage, an lever-pivotally connected to said link and core, and means for adjustably to said toggle linkage:

ingthe core including toggle linkage and'a Within the mold cavity.

In testimony whereof we affix our"signa' it V V tures. I 3 V V V V ARTHUR T. BATEMAN.

' ANDREVV'IRVINE. I

7 The 'combinationwith a mold having a mold cavity, of a 'corefiadapted to be positioned within the mold cavity and to be withdrawn therefrom, and means for actuat-x ioo connecting said I lever '110I 80 permanent molduponthe support having a V downwardly openingmold cavity, ofa per;

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