US1727312A - Mold for multiple rings - Google Patents

Description

Sept. 3, 1929. I M. A. MIKESH MOLD FOR MULTIPLE RINGS Filed March 10, 192'? Afywemtoz Mar/m A. lkesh 33M; Qua/"M Patented Sept. 3, 1929.

I 1,727,312 PATENTOFFICE. i

HARTIIT A. MIKESH, OF JERSEY GITd', JERSEY, ASSIGNOR To THE M. W. LOGG COMPANY, OF NEW YORK, N. Y., A CORPORATION 01f DELAWARE; r

HOLD FOB MULTIPLE RING S.-

Applieation filed March 10, 1927. Serial 1W0. 174,201.

w This invention relates to a multiple mold and more particularly to a mold for centrifugally casting a number of rings simultaneously. 3 5 In forming rings, such forexample as pipeflanges, it is obviously desirable that a mold be used whereby a number of rings may be cast at once. In order to accomplish I this result, a mold having a number of ring shaped chambers therein is required. The metal is ordinarily poured intothe mold from one end and overflows from one chamher into another until all of the chambers are tilled. Since the mold isflpeing rotated during the pouring, the di culty is encountered that due to the overflow from one chamberto the next, an annular web or shell' is formed joining adjacent rings together. This shell or web must be broken away or removed in order to separate adjacent rings. Any means by which the size of'the web may be reduced isfltherefore desirable since it will simplify the roduction of the rings. By my invention have provided a means I of ofisetting the openings between the various chambers so that the metal will flow from one compartment to another only during a portion of a revolution, thus reducing to a minimum the size of the web connecting so therings. In carrying out my invention I provide a mold having therein a number of chambers which communicate with one another by means of annular openings, eccentrically ar ranged with respect to one another, and

which in the preferred form have their centers removed an equal distance from the axis of the mold and arranged around the circumference of an imaginary circle at intervals of 90 so that a perpendicular dropped from the center of one opening totheaxis of the mold is at right angles to perpendic-' ulars similarlydropped from the centers of adjacent openings to the axis of the mold. -I provide this symmetrical arrangement in order to maintam the'balance of the mold, thereby keeping the centrifugal force of the rotating mo 'the following description is read in connection with the drawings in which like numerals refer'to like parts and in which- Figure 1 is a longitudinalsection of the mold showing the eccentric manner in which d evenly distributed at all times. My invention will best be understood if the communicating passageways between the chambers are'arrangedf Flgures 2, 3, 4, and 5 are transverse sec tions of the mold along the lines 2-2, 3--3, -4-4 and 5-5 respectively showing the center of each openingofiset from the axis of the mold;

Figure 6 is a plan view of a completed casting made'inaccordance with my-invention, showing the adjacent rings joined to gether by relatively narrow webs instead of by annular webs. v

s Figure 7 is an end view of the casting, the broken lines representing the webs joining successive pairs of rings.

The numeral 11 represents a mold having a refractory lining 12 which also serves to form the chambers 2, 3, 4, 5, 6, 7, 8, 9 and 10 in which the multiple rings are cast. Communicating with the end chambers 2 and 10 are the openings 13 in the ends of the mold, 75-

, Since the centers of the opcnin s are spaced at intervals of it will be 'r'ea ily apparent 85 that each successive group of four openings will be similarly arranged so that the open ings 15 and 19,16 and 20, '17 and 21 and 18 and 22 will be concentrically arranged. The four ositions of the openings are shown respectlvely in Figures 2, 3,4, and 5 while they are num red to represent openings 15, 16, 17 and 18' as pointed out above. They also serve to represent each successive group of four openings. It will be obvious that the centers of the openings may be angularly spaced apart by any desired amount and the the webs joining the 'first five rings being shown in broken line, constituting arcs dis- 7 that I do not limit myself to the bodiment set forth-herein but only posed about the central opening in the castlowing claims:

1. A mold comprising a number of chambers. and a number of passageways joining said chambers, each of said passageways being eccentricallydisposed with respect to the axis of the mold and with respect to each other. I

2. A mold comprising a number of chambers and a number of passageways joinlng said chambers, said passageways being eccentrically disposed with respect to the axis of the mold and with respect to each other, and also collectively defining a longitudinal passage through the mold including the axis thereof. v

3'. A mold for casting multiple ringscen trifugally, comprising .a substantially cylindrical member having interiorly a number of chambers, partitions between said chambers, said partitions having openings therethrough of equal diameter and including the axis of the mold, the'center of each of saidopenings being removed an equal distance from the axis of the mold. l

4. A mold for casting multiple'ringscentrifugally, comprising a substantially cylindrical, rotatable hollow; member having an opening for receiving molten metal, and having interiorly a number of chambers sepay the fol rated by partition walls, said partition walls having circular apertures therethrough permitting the metal to fiow from one-chamber to the next, each of said apertures including the axis of thecylinder and having its center positioned an equal distance from said axis, and being angularly disposed with respect to one another about the axis of the mold.

5. A mold for simultaneously casting a number of ringscentrifugally comprising a cylindrical member, having interiorly a core comprising a number of chambers, each of said chambers communicating with adjacent chambers by means of passageways, said passageways being eccentrically positioned with respect to, but including, the axis of said-core, and adjoining passageways being eccentrically positioned with respect to each other.

6.-'A mold for simultaneously casting a number of rings centrifugally, comprising a cylindrical mold having interiorly a core,

said core being formed to provide a number of annular chambers partially separated by vpartition walls but communicating with adjacent chambers by means of circular openings extending through said partition walls,

the centers of each of said openings being disposed. at intervals of 90 around the cir.- cumference of an imaginary circle having the axis of the mold for its center.

7. A mold comprising a number of chamv bers cgmmunicating with one another by means of eccentrlcally arranged circular openings, said openings being of equal radius and positioned successively at equal angular distances around the axis of said mold, and also collectively defining a longitudinal passage including the' axis of the mold. K

'In testimony whereof, I have signed my name to this specification this 2nd day of March, 1927.v 1 M. A. MIKESH.

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