US1563189A - Mold-forming device - Google Patents

Description

6. A. HAUSHERR MOLD FORMING DEVICE Filed June 26, 1925 Nov. 24, 1925- 2 Sheets-Sheet 1 INVENTOR l lfiaa$hfjli ATTORNEYS J WITNESSES Nov. 24, 1925- 1,563,189 G. A. HAUSHERR MOLD FORMING DEVICE Filed June 26, 1925 2 Sheets-Sheet 2 WITNESSES INVENTOR A TTOHIVEFS Patented Nov. 24, 1925.

UNITED STATES GUSTAV A. HAUSHERR, 0F BAYVILLE, NEW JERSEY.

MOLD-FORMING DEVICE.

Application filed. June 26, 1925.

To all whom it may concern:

Be it'known that I, GUSTAV A. HAUSI-IERB, a citizen of the United States, and a resident of Bayville, in the county of Ocean and State of New Jersey, have invented a new and Improved Mold-Forming Device, of which the following is a full, clear, and exact description. v

The present invention relates to new and useful improvements in molds, and it pertains more particularly to molds for casting precious metal, such, for example, as articles of jewelry from gold and the like.

It is one of the primary objects of the invention to provide a new and improved form of sand mold in which the cast or finished articles will have a smooth appearance.

Heretofore articles of jewelry have been cast in sand molds but so far as known this method has been abolished for the reason that the finished articles are pitted to an extent which renders the casting in sand molds impracticable.

It is a further object of the invention to so construct the sand mold that precious metals may be molded therein.

It is a further object of the invention to provide a sand mold in which the entire mold is formed from sand.

2 The invention contemplates means for shapingv the sections from which the mold is formed and positioning the sections of the mold together to form a complete mold, the shape of the articles to be cast being formed in the mold by patterns.

With the above and other objects in view reference is had to the accompanying drawings, in which Figure 1 is a top plan view of one of the mold sections;

Figure 2 is a top plan view of the other mold section;

Figure 3 is a detail sectional view showing the manner in which one half of the mold is formed;

Figure 4 is a sectional view of the mold forming sections placed together showing the manner of making the mold with the models in position therein;

Figure 5 is a detail sectional view of the mold and core before the metal has been poured thereinto and before the mold has been removed from the mold forming apparatus;

Figure 6 is a detail sectional view of the Serial No. 39,877.

complete mold after it has been removed from the forming apparatus;

Figure 7 is a detail perspective view of the model carrying arbor;

Figure 8 is a detail perspective view of a section of the mold;

Figure 9 is a sectional view showing the manner in which the mold is formed to cast flat articles such as medallions and the like;

Figure 10 is a detail sectional view of the mold after the same has been formed and removed from the forming device;

Figure 11 is a detail sectional view of a modified form of the invention, and

Figure 12 is a perspective View of a section of the mold used in connection with the modified form.

In the preferred form of the invention the device comprises a base 11, and said base consists of a foundation for the mold forming elements during the building up of the mold and comprises a block of metal or other suitable material.

I In carrying out the invention a suitable semicircular member 12 is placed upon the base with its flat side 13 in contact therewith. This semicircular member 12 has reduced semicircular extensions 14, and one of said extensions let is flattened as at 15 and provided with size indicating indicia 16. Thesemicircular member is provided with spaced openings 17 the purpose of which will. be hereinafter described. Adapted to be mountedin each of the spaced openings 17 is an inverted cone-shaped member 18, each of which members has a reduced extension 19, by which it is positioned in its respective opening 17 The reference character 20 designates one member of the mold forming device and in the present instance the member 20 is circular in form. It is to be understood, however, that these members may be square or of any other desired shape. The member 20 is provided at diametrically opposite points with notches 21, adapted to receive the reduced semicircular. extensions 14- of the member 12, and said member 12 is adapted to be positioned within the con fines of the member 20, as shown in Figure 2. The member 20 is provided at diametrically opposite points at right angles to the notches 21, with guides 22, and said guides are hollow, as indicated by the reference character 23, After the member 20 has been assembled as described, it is packed with sand 24, as shown in Fig. 3. If the member 20 now be inverted the inverted cone-shaped members 18 will be dislodged and will provide tapered pouring openings in the body of sand. In its inverted position the semi-cylindrical member 12 is moved, thus leaving this half of the mold completed.

The reference character designates the other member of the forming device, and aid member 25 is provided with guides 6, which are in the form of pins, or the like, 27. These guides 26 are arran ed at diametrically opposed points, and formed in the member 25 at diametrically opposite points at right angles to the guides 26, are notches 28. Carried by the member 25 are brackets 29, and pivotally mounted on said brackets 29 are levers 30, said levers being connected by a bar or the like 81. The free end of each of these levers projects to a point beyond the notches 28, for a purpose to be hereinafter described.

The reference character 32 designates an arbor, and said arbor is adapted to carry the patterns or models 33 from which the castings are to be made. This arbor is provided near each of its ends with a re duced portion 34, and each of said reduced portions 25 i is adapted to be received in its respective slot 28 heretofore mentioned. The ends of each reduced portion 3st is provided with an enlarged portion 35, and each of said enlarged portions 35 is provided with an opening 36 adapted to receive centering pins 37 which centering pins are carried by the member 25.

After the sand 24 has been packed in the member 22 and said member has been inverted and the members 18 and 12 removed therefrom, the member 25 is placed on top of the member 22 with the pins 27 of the member 25 engaging their respective hollow portions of the guides 22 of the member:-

20, Before the member 25 has been placed on the member 22, however, the arbor 32 with the patterns or models 33, is placed in position on the member 20. After this has been done, sand 58 is packed within the member 25, as shown in Figure l of the drawings. The entire device is now inverted and the member 20 is removed, after which the two levers 30 are rocked about their pivotal points to disengage or remove the arbor 32. After the arbor 32 is removed, the sand core 39 is positioned in the member 25, after which the member 20 is placed thereon as shown in Figure 5. A block :40 is now engaged with the san 'l 38 in the member 25 and the completed mold is forced from the members 20 and 25, as shown in Figure (5. It is now only necessary to pour the metal through the pouring opening formed by the inverted conical members 18.

In the present instance the device has been shown as capable of molding two linger rings, but it is obvious that it may be so formed as to mold a single finger ring or more as desired.

In order to properly position the patterns or molds on the arbor 32, said arbor is provided with markings -l0 which show the relative position between the models and the pouring openings formed in the mold. The arbor is further provided with size indicating indicia designated by the reference character 32 in order that the proper sizes may be had.

In that form of the invention shown in liigures 9 and i0, the device is adapted for use in connection with flat work, such as medallions and the like, and in this form of the invention the pattern or model, designated by the reference character 43, is carried by a plate at, which is interposed be tween the members 20 and 25. This plate is provided with an opening d5 adapted to receive the inverted cone-shaped member 18 in order that a pouring hole may be pro vided. In this form of the invention the member 25 is inverted with respect to the position in which it was shown in Figure 9, and the sand is packed upon the pattern or model43, it being understood, of course, that the plate l i is positioned to form a bottom for the member, 25. In this manner after the plate 44 and the inverted conicalshaped member 18 have been removed the mold is forced from the members 20 and 25, as in the preferred form of the invention, and the mold as illustrated in Figure 10, is produced.

In the form of the invention shown in Figures 11 and 12, the device is adapted for use in pouring linger rings in which engraved designs are employed on opposite sides of the plate and owing to the undercut portions of said designs must be poured in a different manner than is the case with plain rings as in the preferred form of the invention. In the modified form of the invention. shown in Figures 11 and 1 2, the semi-cylindrical member 12 is provided with projecting portions 46, which form pouring holes to the side in order that when the pattern or model is removed the same will freely come away from the sand and leave a clean impression therein.

From the foregoing it is apparent that the present invention provides a new and improved means for making molds for casting precious metal in sand, and, at the same time, produces a device of this character which is highly efficient and practicable.

I claim:

1. A device for forming molds comprising a base, a plurality of mold forming elements supported on said base, means for preventing shifting movement of one of said memiii hers relative to the other member, a pattern carrying member interposed with respect to the two members and adapted to support patterns interiorly thereof, and means carried by one of said members for elevating the pattern carrying member.

2. In a mold forming device, a base, a plurality of mold forming members arranged in superimposed relation, means for preventing shifting movement of said mold forming members relative to one member, a pattern supporting member, means for preventing shifting movement of the pattern supporting member relative to the mold forming members, and means carried by one of the mold forming members for lifting the pattern supporting member, substantially as described.

3. In a mold forming device, a plurality of mold forming members adapted for interengagement with each other, means for supporting a pattern carrying member on one of said mold forming members, and a pivoted bail mounted on said last mentioned mold forming member and adapted to engage the pattern carrying member to elevate the same relative to the mold forming member, substantially as described.

4:. In combination with a mold forming member, a pattern carrying member supported thereby, and means for elevating said pattern. carrying member with respect to the mold forming member, and a mold formed therein, said elevating means comprising a bail-like member pivotally mounted on the mold forming member, said baillike members having extensions underlying the pattern carrying member.

GUSTAV A. HAUSHERR.

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