US1390349A - Artificial grape and method of producing same - Google Patents

Description

J. H. EMERY.

ARTIFICIAL GRAPE AND METHOD OF PRODUCING SAME.

APPLICATION FILED FEB. 5, I921- V Patented Sept. 13, 1921.

UNITED STATES "PAQTEINTI OFFICE.-

JAMES H. EMERY, or NEW YORK, N. r.

I ARTIFTQIAL GRAPE AND METHOD OF PRODUCING SAME;

To all wlwm it may concern:

Be ltknown that 1, JAMES H. EMERY, a citizen of the United States, residing at Inwood Park, county of Queens, city and State of v New York, have invented new and useful Improvements in Artificial Grapes and Methods of Producing-Same, of which the following is a specification.

This invention relates to artificial grapes and a method of producing such grapes.

- 4 The principal object of the invention .iS

to produce artificial grapes which in appear.

gn'ce are substantially identical tov the natural ruit.

A further object is to provide a simple, quick and economical method of producing such artificial fruit. One embodiment of trated in the accompanying drawings in which: I

Figure 1 is a diagrammatic front elevation of a mold for casting the cores of the grapes showing the casting process in vari-. ous stages, I

Fig. 2 is a plan View Fig. 1,

Fig. 3 is a vertical section taken on the line 33 of Fig. 2 and Fig.4 is'a vertical section of a finished grape.

of the mold shown in In carrying out the invention a two part;

mold of one or more natural grapes-is first pro i ided in any suitable manner, but most desirably in accordance with the method of peaking su'ch molds illustrated in the patent o applicant No. 1,373,121, granted March 29, 1921. The mold is thenfilled with a suitable quantity of any convenient or desired temporarily fluid thermoplastic com-' position. When the filling composition has cooled sufiiciently to become viscous,'a stem of suitable material, such as wire, is inserted to a proper depth in the mold. As

cooling continues, the composition solidifies,

the stem becomes firmly. embedded inthe core, the mold is then separated and the core of the grape removed. Any bur or fin surrounding the stem is removed and the grapecore is finished. a

The core is now dipped in a molten bath ofsuitable thermoplastic material and immediately removed, sufiicient of the bath mate-- rial adhering to the core completely to coat the same. The coating hardens almost immediately after the core is removed from the the invention is illus- Specification of Letters Patent. Patented Sept. 13, 1921. Application filed February 5, 1921. Serial No. 442,603. I

bath, and is then dusted with a suitable finely divided light colored powder, and the cated studs 3 which fitv into correspondingly v located recesses 4: provided in thepart 1- to insure correct registry between the parts 1 and 2. While the invention may be carried out with a mold for a single grape, it is most conveniently practised witha mold providing for the casting of say a dozen or more grapes at one operation. "When such a mold -1s employed the upper inner edges ofthe parts land 2 are beveled a'sat 5 to provide a trough for; distributingtne thermoplastic core material poured from the spout 6 to the various recesses 7. It is then only neces- ,sary while maintaining the upper edge of the-mold substantially level, to pour the thermoplastic material into the trough whence it flows by gravity into the various recesses 7. Since most suitable thermoplastic materials have an appreciable coefficient ofexpansion upon heating and will therefore contract when cooled, itis desir- I able to pour a. slightexcess of the core composition into the trough. As this composition cools and shrinks in each individual mold 7, the excess material will flow from the trough into the recesses 7 thereby insuring a final casting of substantially the same size as that of the mold.-

I n producing imitations of grapes having a dark colpr, such as blue, it is immaterial we er t e core is trans arent or opaque, cd loiiid or colorless, since the outside coating 8 applied to the core will prevent thepassage of light'through the grape. When, however, grapes of a lighter color, such as lightred or light green, are being imitated,

it is important to use almost colorless and nearly transparent or at least translucent material in making the core. The remarkably close resemblance between the light colored artificial grapes produced in accordance with this invention and the natural articles results from the fact that the cores have substantially the same optical properties as the pulp of the natural grape, while the coating 8 has optical properties substantially identical to those of a natural grape skin.

In order to prevent the stem 9 from becoming detached from the core there is most desirably provided a bent or hook portion which, when embedded in the corasecu -sly anchors the stem in place. Various materials are suitable for use as stems, but it has been found that thehest results are 'nedby the use of oxidized copper wire lip; with some adhesive powder of light The most satisfactory material for tnis purpose has been. found to be finely did oxid of zinc.

ll hile the invention may be carried out with various thermoplastic materials, such as animal, vegetable or mineral waxes, it has been found that the best results are obtained in. casting the cores when a mixture of about parts of paraiiin to 1 part of carnauba wax is used. The carnauba wax serves to raise melting point of the mixture as well as to increase its hardness when in the solid state and the same mixture, with the addition of suitable coloring material, makes coating for the grapes.

Having thus fully described the invention what claimed is:

1. An artificial grape comprising a core of thermoplastic material and a coating of L ed material covering said core.

An artificial rape comprising a core oi translucent thermoplastic material and a colored translucent coating covering said core.

3 An artificial grape comprising a core of colorless translucent wax and a. coating of colored translucent wax covering said translucent wax covering said core 7 ieeoeee and a lightcolored powder adhering to the surface of said coating.

5. An artificial grape comprising a core of colorless translucent wax, a coating of colored translucent wax covering said core and an oxid of zinc powder adhering to said coatin 6. An artificial grape comprising a core of thermoplastic material, a stem projecting from said core, and a colored coating covering said core.

7. An artificial grape comprising a core of thermoplastic material and a stem' projecting from, the core, said stem having a bent portion embedded within said core.

8. A core for artificial grapes comprising substantiallv nineteen parts of parafiin to one part of carnauba wax and having opti-' cal properties similar to those of a natural grape pulp.

9. In an artifiicial grape, in combination, a core composed of material containing substantially nineteen partsof paraflin to one part of carnauba wax, and a colored coating of the same material.

10. The method of producing artificial grapes which consists in filling a. mold with a temporarily fluid thermoplastic material and allowing the contents of the mold to cool until it becomes viscous, then inserting a stem in the viscous core, then allowing the contents to solidify, then removing the resulting core from the mold and coating it with colored thermoplastic material.

11. The method as claimed in claim 10 which consists in dusting the coating with powdered oxid of zinc.

12. An artificial grape comprising a core of thermoplastic material'and a coating covering said core.

13. An artificial grape comprising a core of thermoplastic material and a'stem projecting from the core, said stem having a portion embedded within said core.

JAMES H. EMERY.

DISCLAIMER 1,390,349.James H. Emery, New York, N. Y. ARTIFICIAL GRAPE AND METHOD OF PRODUCING SAME. Patent dated September 13, 1921. Disclaimer filed December 23, 1933, by the patentee.

Hereby enters this disclaimer to claims 1, 2, 3, 4, 5, 6, 7, 12 and 13 of said Letters Patent, Which are in the following Words, to Wit:

1. An artificial grape comprising a core of thermoplastic material and a coating of colored material covering said core.

2. An artificial grape comprising a core of translucent thermoplastic material and a colored translucent coating covering said core.

3. An artificial grape comprising a core of colorless translucent Wax and a coating of colored translucent Wax covering said core. I

4. An artificial grape comprising a core of colorless translucent Wax, a coating of colored translucent Wax covering said core and a light colored powder adhering to the surface of said coating.

5. An artificial grape comprising a core of colorless translucent Wax, a coating of colored translucent Wax covering said core and an oxid of zinc powder adhering to said coating.

6. An artificial grape comprising a core of thermoplastic material, a stem projecting from said core, and a colored coating covering said core.

7. An artificial grape comprising a core of thermoplastic material and a stem projecting from the core, said stem having a bent portion embedded Within said core.

"12. An artificial grape comprising a core of thermoplastic material and a coating covering said core.

13. An artificial grape comprising a core of thermoplastic material and a stem projecting from the core, said stem having a portion embedded Within said core.

[Ofiicial Gazette January 16, 1.934.]

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