US1648244A

US1648244A - Chaplet

Info

Publication number: US1648244A
Authority: US
Publication date: 1927-11-08
Anticipated expiration: 1944-11-08

Description

Nov. 8, 1927. f

C. H REEDER CHAPLET Filed May 9. 192.7

/NVENTOR C. REEDER. ymlfr Patented Nov. 8, 1927.

UNITED STATES CHARLES H. REEDER, 0F ST. LOUS, MISSOUR'.

CHAPLET.

Application filed May 9, 1927.

This invention relates to chaplets for use in foundry work to support cores in molds which are prepared to receive molten metal. The top and bottom faces of a simple cliaplet should be `exactly parallel with each other, and the distance between these top and bottom faces should conform precisely to a predetermined measurement, so as to support the core in a predetermined position relative to the surrounding mold. lf the core is not accurately positioned in the mold, the casting will be too thick at one point and too thin at another point.

Moreover, the chaplet should have sufiicient strength to support the core without danger of any displacement due to the weight of the core. t is also desirable to malte the chaplet of thin metal which will be fused by and lirmly united with the molten metal, so as to prevent the formation of a weak spot in the casting, and the chaplet should be so designed that it will not `weaken the casting. Since thousands of chaplets are used every day in a large foundry, the cost is also an important consideration.

Prior to this invention, the chaplets universally employed in making large heavy ,castings were in the. form of spools, each com risinv' a air of thin disks riveted orv welded to the ends of a central rod. The cost of such ehaplets includes the labor involved in assembling and uniting the three parts of each chaplet. lhis is an expensive operation and the results have shown that it usually produces an inaccurate article wherein the top and bottom faces are not parallel with each other. Consequently, the ordinary chaplet does not provide predetermined spaces between the core and the surrounding mold, and owing to the inherent weakness of a thin dish more or less iirmly secured at the center there is danger oi' deflection due to a weakness at the point where the disk is secured to the central rod, or the thin metal may be bent by the weight of the core.

Therefore, attempts have been made to produce a chaplet of a single piece of sheet metal, but so far as l am aware such chaplets have not been satisfactory in making large heavy castings wherein the foregoing conditions should be overcome to produce a chaplet which is better or less expensive than the ordinary spool-shaped chaplet.

My object is to produce a device of this kind which is stronger, less expensive and Serial No, 189,919.

more accurate than the chaplets universally employed as supports for heavy cores.

More specifically stated, an object is to produce a simple and inexpensive chaplet made of sheet metal which will be readily fused by or welded to the metal poured into the mold, without 'weakening the casting, and having the accuracy required to precisely predetermine the position of the core, as well as the strength required to support the core without danger of deflection when subjected to the weight of a heavy core.

lWith the foregoing and other objects in view, the invention comprises the novel construction, combination and arrangement of parts hereinafter more speciically described and illustrated in the accompanying drawings, wherein is shown the preferred embodiment of the invention. However, it is to be understood that the invention comprehends changes, variations and modilications which come within the scope of the claims hereunto appended. f

Fig. l is a side elevation of a chaplet embodying the features of this invention.

Fig. 2 is a section through the middle of the chaplet.

Fig. 3 is a top view.

F ig. 4 is a perspective View of the chaplet shown in Figures 1, 2 and 3. i

Fig. 5 isa perspective view illustrating another form of the invention.

The chaplet shown by Figures l to 4 comprises top and bottom members l, an i intermediate member 2 connecting said top and bottom members7 and separating -members 3 cooperating with said intermediate member to prevent downward displacement of the top member relative to the bottom member'. All of these parts may be made of a single sheet of metal bent to the desired shape and punched to form the separating members 3 which preferably lie at an angle to the top and bottom members l, and also at an angle to the connecting member Q.

The top and bottom faces of the chaplet are preferably liat and parallel with each other.

The connecting member 2 extends down wardly from one side of the top member to the opposite side of the bottom member, and this connecting member may be inclined as shown to cooperate with the top and bottom members in forming a Z-shaped article. The separating members 3 are in the form lio of tongues punched from the top and bottom members. The upper separating tongue 3 lies between the top member and the connecting member 2 so as to prevent downward displacement of said top member relative to said connecting member. rlhe lower separating tongue 3 lies between the connecting member 2 and the bottom member l to pre` vent downward displacement of the connecting member relative to the bottom member. The tongues 3 thus cooperate with the member 2 to prevent downward displacement of the top member relative to the bottom member.

The end of each tongue 3 contacts with the connecting member 2, as shown most clearly in Fig. 2, and the connecting'member is provided with abutments l to prevent displacement of the ends of the tongues. These abutments i can be conveniently formed by pressing the sheet metal as shown in Fig. 2, one of said abutments being extended upwardly to cooperate with the upper tongue, and the other abutment being extended downwardly to cooperate with the lower tongue. Reinforcing ribs 5 are formed by pressing the connecting member 2, and these ribs are preferably parallel with the inclination of said connecting member. T he separating' tongues 3 are preferably arched transversely, as shown most clearly in llig. 3, to increase the strength of these reinforcing elements.

Fig. 5 illustrates a slight modification wherein the connecting member 2 is provided with a tongue 6 which extends upwardly to Contact with the top member l. The tongue 7 extends downwardly from the member 2 .and contacts with the bottom member l. lf desired, this modified form may be further reinforced by tongues 8 extending from the top and bottom members and contacting with the intermediate member 2.

The chaplet herein described is a strong and simple device made of inexpensive sheet metal which can be easily punched and bent in a forming die to produce an article having absolutely parallel top and bottom faces accurately separated to lie at a predetermined distance from each other. rlhe simple structure is so braced that it will withstandV severe crushing stresses without material deflection, and although the sheet metal may be relatively thin, it has no weak overhanging portions likely to be bent by the weight of a heavy core. The device shown is also open at all sides to receive the molten metal without liability of trapping air in the chaplet. rlhe thin metal is readily fused by, or welded to, the casting, and owing to the peculiar shape of the chaplet structure, it does not weaken the casting.

l claim:

l. A chaplet comprising top and bottom members having flat top and bottom faces, a connecting member extending downwardly from one side of the top member to the opposite side of the bottom member, an upper separating tongue between said connecting member and top member to prevent downward displacement of said top member relative to said connecting member, and a lower separating tongue between said connecting member and the bottom member to prevent downward displacement of the connecting member relative to said bottom member.

2. n. chaplet comprising top and bottom members, and an inclined connecting member extending from one side of the top member to the opposite side of the bottom member to form an approximately Z-shaped chaplet having parallel top and bottom faces.

3. A chaplet comprising top and bottom members having flat top and bottom faces, an inclined connecting member extending from one side of the top member to the opposite side of the bottom member to form an approximately Z-shaped article, and sep arating tongues cooperating with said .inclined connecting member to prevent downvard displacement of said top member, one of said separating tongues beingbetween the inclined connecting member and the top member to prevent downward displacement of the top member relative to said inclined member, the other separating tongue being between said inclined member and the bottom member to prevent downward displacement of said inclined member relative to said bottom member. p

In testimony that l claim the foregoing l hereunto affix my signature.

@Hannes n. nennen.