US1571439A - Permanent mold for casting radiator sections and the like - Google Patents

Description

C. B. SEEM PERMANENT MOLD FOR CASTING RADIATOR SECTIONS AND THE LIKE Filed Oct. '2, 1924 Feb. 2 1926.

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Patented .Feb. 2, 1926.

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ensures BENJAMIN seen, or Bur-ram, NEW YORK. I

PERMANENT MOLD non cas'rme nanm'ron sno'rrons am) ran 1.11m.

Application filed October 7, 1924, Serial No. 742,141.

To all whom it may concern."

Be it known that I, CHARLES B. SEEM, a

citizernof the United States, residing at Bufcasting, and

falo, in the county of Erie and State of New York, have invented certain new and useful Improvement in Permanent Molds for Casting Radiator Sections and the like, of which the followin is a specification.

The present invention relates to an improved method of casting radiator sections and the like and the'permanent molds for carrying out the same. 7

The usual method followed of producing radiator section. casting is to provide individual moldsbuilt up 1n sand for each cast ing. This is a very costly and tedious proce ure particularly when it is considered that thousands of radiator sections are produced every-day b manymanufacturers; The introduction 0 -my molds and process for doing the'work in radiator lants and other duplicating foundries, w ether the castings are made of iron, brass, aluminum or other metals and alloys, would acco'rd-' which Fi re'1 represents a top plan view of the mol Fig. 2 an end mold closed;

' Fig. 3 a longitudinal section along line 3-3 of Fig. 1 with the core and casting in position;

Fig. 4 a plan view of the mold 0 en ez'zposing the recesses and channels or the View Figure 1 with the Fig. 5 a cross section along line 5-5 of Figure 1.

In the drawing, reference numeral 10 represents the cope or top half of the mold and reference number 11 the drag or bottom part thereof. For radiator sections both halves are identical and have been shown such in the drawing, but it is evident that the cope and the drag may have entirely dif- Shallow depressions 16 ma contour of the casting for which the mold is intended. The mold is to be properly vented. 7

As indicated in the drawing, --it is of rectangular form and the two halves are hin ed together along one-side as at'12 and 'provi ed with clips or looking clamps 13 on the other side, so that the mold can be opened and closed like a suit case. The hollow portion of the mold consists of recesses 14 111 each half for the body of the radiator section and channels 15 for the radiating fins thereon.

also be pro- 4 ferent cavities depending on the section and videdto form bridges or rel nforcing strips between the walls of the casting and at each end is furnished a circular pocket 17 for forming the contacting pads 25 between the sections. In order to properly position the core in length direction of the mold these sockets 17 may have a smaller concentric e ression as at 18. i ulncient metal is provided outside the main recess 14 along all edges of the mold so. that the surfaces 19 at the central dividingplane of the mold make proper contact to prevent leakage. At 20 is shown the gate or sprue hole one half .oneach side of the dividing'plane. From this gate leads or branches 21 radiate and open into the main 'recess 14. I

The core .22 is collapsible and consists preferably of hard packed sand into which are baked short metal pins or supporting inserts 23 which are of a length corresponding.

'tothe height of the cavity of the mold so that the ends of the pins or supporting inserts abut against the top and bottom of the cavity. In this manner the core becomes freel suspended in the cavity so that walls 26 0 even thickness are obtained in the casting. As already described the core may be positioned accurately in length direction by jengaging withisuitable lugs 24 in the depressions 18.

Before commencing the casting the mold is heated to a suflicient degree to prevent chilling. The pouring of the metal is then started and may be done either by pneumaticpressure, vacuum or gravity.' As soon as the casting has been com leted and the metal has become solid, the ocking clamps 13 are removed and the cope 10-swung open or raised thus exposing the casting which may then be lifted out of the drag 11. The core 22 is thereupon removed through the manner.

end openings at 1 8 of" the casting and the inter-i permanent molds are: increased production" and decrease of imperfect castings "with eon sequent losses With the pins "er supporting inserts remaining in the easting no chippingor dressing if of-the same is necessary an work and-conditions in general in the foundry are'improved.-- f What I claim as new is:

'the mold v-ture. 1i A permanentmetal meld for castings cemprisin mating halves, clamps adapted to lock the halves .together,; a core, means for positionin the core in the mold cavity, said means inc uding lugs on the core and correspond-ing pockets in the .mating mold. halves,

cavity including longitudinal recesses in the'mold-halves and transverse depressions connecting the recesses, bracing elements for the casting walls inserted 'in the core and edntacting with their endsthe opposite sidesof the mold cavity, said elements-remaining in the finished casting.

In testimo y whereof I aflizr my signa- "CHARLES BENJAMIN'SEEM.

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