US1774104A - Mold and method of filling the same - Google Patents

Description

A g- 6, 3 I R. MINKE 1,774,104

MOLD AND METHOD OF FILLING THE SAME Filtd June 15, 1927 14 Fig. 2

(i U {J gwuentoz Patented Aug. 265 1939 I I if Panr asina i RALEIGH MINKE, OF TOLEDO, onro, ASSIGNOR .rornn vacuum CASTING 00111251871 2 on ronnno, OHIO, A oonronarron or 01110" V I 1 MOLD AND METHOD 01: FILLING THE SAME Application filed June 13, 1927. Serial No. 198,465.

This invention relates to a method of castup the partitions at 23 when .the mold is ing metal and apparatus therefor. The purmoved in the direction of arrow 24 on Fig. 2. pose ofthe invention is to fill a inoldwith slanting the bottom'ofthe inlet forward metal quickly, and Without the production inthe; manner described, tends to scoop up. y 5 of excessive eddy currents within the mold. the metal when. relative horizontal -move- 55.

Morespecifically, the purpose of the invenment is produced between the mold and the tion is to utilize relative horizontal movement metal. This minimizes the differential pres-- of the mold and molten metal in filling the sure on the metal within the mold and outmold, particularly in combination with evac-f side thereof necessary to fill the mold cavity, nation of air from the mold during the filling as the influx of the metal in the mold is-as-. 9 thereof, and to avoid unequal filling of the sisted by this scooping action. At the same mold which would otherwise result from reltime it rendersv the beginning of the influx ative horizontal movement of the mold and of the metal'int o the mold more'prompt and molten metal in the direction of an elongated retards the tendency of the metal to flow horizontal inlet opening in a mold. r downward; from the inlet when the mold is 5 Further detailsof the invention will apra sed abovet-he molten metal in the conpear as the description proceeds. tamer, thus lengthening appreciably the ef- In the accompanying drawings forming a fective filling time for the mold. F urtherpart of this specification, Figure lis a diamore, when the opening iselongated in the grammatic plan view of apparatussuitable direction of travel of the mold,'the partitions 70 for carrying out the method; Fig. 2 is a sectend to equalize this scooping action along tion on the line 2-2 of Fig. 1, showing-one thelength of thisinletso that the forward moldhalf in elevation. p end of the mold cavity is filled substantially In the embodiment of the invention illusat the same time and evenly with the "rear trated in the drawings, a mold 10 is mounted end of the mold cavity.

upon a carrier llfor revolution about an axis It Will be understood that variations in i 12. Arrow 13 on Fig. 1 indicates the directhe shape and arrangement of the mold and tion of movement of the mold about its axis. in the scooping partitions in the inlet are Beneath the path of the mold there is a within the scope of this invention, being demetal container l havinga slot 15 in its pendent upon'the shape of the article to be upper side through which the bottom of the cast. It-will also be apparent that, with a mold may contact molten metal 16 within the stationary mold, horizontal movement of the container. metal container, or of the metal in the con- The mold cavity 17 is connected by a nartainer, produces substantially the'same result row slit between the mating sections with a as horizontal-'movement of the mold where 85 vacuum groove 18 in the face of the sections. the metal is stationary, as either the mold or Air is exhausted from this vacuum groove the metal may be moved, or both may be and so from the mold'cavity by any suitable moved, the relative motion of themetal and means, not shown. I the mold being the only requisite for produc- 40 At the bottom of the mold there is an ining'thedescribed effect. It will also beap- 30 let opening 19. This inlet opening is prefparent that suflicientlyrapid relative move-- erably elongated in the direction of movement of themold and metal in proportion to ment of the mold, and across the inlet openthe height of the mold cavity above the level ing there are a plurality of partitionsQO. of the metal outside of the mold will result The bottoms of these partitions slant forin completely filling the cavity without the ward in the direction of movement of'the aid of differential;pressures, although the mold. The forward end 21 of the mold inlet combinationof the two forces for filling the likewise slants forward, and so doesthe rear mold is preferred. 7 end 22 of the mold inlet. It will be readily It will be further understood that, where seen that the molten metal will tend to slide there is relative horizontal movement. be-

tween the mold and the metal, and the inlet is elongated in the direction of such movement, partitions across the inlet tend to equalize the distribution of the metal even if such partitions are vertical, because they prevent the flowing of the metal to the rear of the mold andcause it to rise substantially equally through each of the plurality of inlets formed by said partitioned inlet.

Various other modifications may be made within the scope of the appended claims.

WVhat I claim is: r

1. The method of filling a mold with molten metal,iwhich comprises producing relative horizontal movement between the mold and the metal, and utilizing said horizontal movement to raise the metal into the mold cavity, by means of a surface slanting downward'from the mold cavity and forward in the direction of mold travel. a

2. The method of filling a mold with molten metal, which comprises arranging the mold with its inlet downward and immersed in molten metal, producing relative horizontal movement between the mold and metal with the inlet directed downward and forward in the direction of mold travel so that said relative movement tends to scoop the metal into the mold. I

3. The method of filling a mold with molten metal, which comprises arranging the mold with its inlet downward and immersed in molten metal, produc ng relatlve hor zontal movement between the mold and metal with the inlet directed downward and forward in the direction of mold travel so that said relative movement tends to scoop the metal into the, mold, andcompleting the filling of the mold by exhausting air from the mold cavity. e v

4. A mold having an inlet opening in its bottom, a container for molten metal, and means permittingrelative horizontal movement between the mold andthe container, the bottom end of the inlet in the mold slanting in a direction to cause said relative move? ment to force metal upward into the mold.

5. A mold having an inlet opening in its bottom, a container for molten metal, and means'permitting relative horizontal movement between the mold and the'container, the bottom end of the inlet in the mold slanting in a direction to cause said relative movement to force metal upward into the mold, the inlet being elongated in the direction of saidrelative movement and there being partitions across said inlet, said partitions slant ing in a direction to aid in the lifting of the a metal into the mold.

I from said opening to the casting cavity, a

container for molten metal, means for permitting relative, horizontal movement between the mold and the metal, said inlet and passage being elongated in the direction of said relative movement, and partitions across said passage dividing it into a row of passages.

7. A mold having an inlet opening in its bottom, a container for molten metal, and means permitting relative horizontal movement between the mold and the container, the bottom end of the inlet in the mold slanting'in a direction to cause said relative movement to force metal upward into the mold, and connections for exhausting the air from he mold cavity.

8. A mold having an inlet opening in its bottom, a container for molten metal, and means for permitting relative horizontal movement between the mold and the container, the bottom end of the inlet in the mold slanting in a direction to cause said relative movement to force metal upward into the mold, the inlet being elongated in the direction of said relative movement and there being partitions across said inlet, said partitions slanting in a direction to aid in the lifting of the metal into the mold, and connections for exhausting the air from the mold cavity.

9. A mold. having an inlet in the bottom thereof, a container for molten metal, means for permitting relative horizontal move-. ment between the mold and the metal, said inlet being elongated in the direction of said relative movement, and partitions across said inlet forming a row of inlets arranged in the line of said relative movement, and con nections for exhausting the air from the mold cavity.

10. A mold having an inlet opening in its underside and a passage slanting at an angle to the vertical upward from said opening to he casting cavity, and a mounting for the mold permitting relative horizontal movement between the mold and molten metal in contact with the bottom of the mold around said opening.

11.. A mold having a horizontally elongated inlet opening in its underside, the passage leading upward from said opening to the casting cavity and partitions across the passage, said partitions being at an angle to the vertical andall slanting in the same direction.

12. A mold having an inlet opening in its underside, said inlet opening being elongated horizontally, and a passage leading upward from said opening to the mold cavity and a fin on the side of the inlet opening arranged at an angle to the vertical, and a mounting for the mold permitting relative horizontal movement between the mold and molten metal in contact with the bottom of the mold around said opening.

In testimony whereof, I have hereunto signed my name to this specification.

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