US1174073A - Diamond-tool mold. - Google Patents

Diamond-tool mold. Download PDF

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Publication number
US1174073A
US1174073A US5993715A US5993715A US1174073A US 1174073 A US1174073 A US 1174073A US 5993715 A US5993715 A US 5993715A US 5993715 A US5993715 A US 5993715A US 1174073 A US1174073 A US 1174073A
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Prior art keywords
stone
metal
mold
diamond
mount
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Expired - Lifetime
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US5993715A
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George Albert Joyce
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D7/00—Casting ingots, e.g. from ferrous metals
    • B22D7/06—Ingot moulds or their manufacture
    • B22D7/10—Hot tops therefor
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
    • C04B35/111—Fine ceramics
    • C04B35/115—Translucent or transparent products

Definitions

  • the object of this invention is to so mount the stone that it will be substantially completely incased in the mount, care being also taken that the-molten metal will reach every part of the surface of the stone in such a way that the skin or surface layer thereof is not destroyed.
  • vSuch supporting means here take the form of a holder extending above the imperforate base of the mold, together with a fusible supporting element of imperforate character, such as wire mesh, between the holder and the stone, which permits the metal to make a hit and miss contact with the stone to reach all parts of the surface thereof without deto entirely incase the stone.
  • Figure 1 is a vertical sectional view of a mold embodying the in 'vention.
  • Fig. 2 is a vertical sectional view of the mount showing the" stone embedded.
  • -F1g. 3 is a sectional view showing a modified form of the invention.
  • the fusible supporting element 8 is wrapped around the stone and its mid dle portion 9 formed into a tail which is inserted in the holder 4.
  • theelement 8 is also wrapped around the stone and the free ends 10 thereof are rolled up into coils or the like vwhich then are inserted in the holder 4.
  • the metal is poured it not only fills the moldchamber, but also passes TlItO the holder 4- with the result that the stone is substantially entirely incased in the metal. In so doing, the fusible element is melted by the metal. Owing to the perforate or mesh character of this fusible element, the entire surface of the stone is reached by a hit and miss contact with the molten metal, and the stone becomes firmly embedded in the holder without destroying its skin.
  • Fig. 2 is shown the casting.
  • the stone 7 is shown completely embedded in the mount 11.
  • the metal is then cut away to expose such part of the stone as may be desired, the cuts being substantially along the dotted lines 12.
  • An apparatus of the character set forth comprising: a mold, and a hollow supporting means for the stone to be set for holding said stone in spaced relation from the' base of the mold and for permitting metal to flow into the hollow supporting means the stone to be set above the base of the mold, and a fusible perforate supporting element interposed between the holder and the stone for permitting metal to flow to substantially entirely surround the stone, the molten metal making a hit and miss contact with the stone.

Description

G. A. JOYCE.
DIAMOND TOOL MOLD.
APPLICATION FILED NOV. e, 1915.
1 174,073. Patented Mar. 7, 1916.
I ED STATES PATENT OFFICE.
GEORGE ALBERT JOYCE, OF LONDON, ENGLAND.
DIAMOND- POOL MOLD.
Specification of Letters Patent.
Patented Mar. '7, 1916.
Application filed November 6, 1915. Serial No. 59,937.
T aZZ whom, it may concern:
Be it known that I, GEORGE A. JoYoE, a subject of the King of England, and resi dent of London, England, have invented.
for setting diamonds or the like to be used ,stroying the skin and for industrial purposes in metal mounts.
Heretofore it has usually been the practice to hold the diamond in position during casting by a fusible element extending up through a slit or recess in the base of the mold, or in other ways to so support the diamond that its point protrudes from the casting in which it becomes embedded. The fusible element when utilized has been in the nature of an imperforate metallic sheet. Serious objections are incident to such practice due to various causes. For instance, the contraction of the metal mount from the base of the mold, due to cooling, will frequently expose an undue proportion of the stone and as a consequence the latter will be held imperfectly in the mount. Also when an imperforate metallic sheet is uti lized for the fusible mount, the metal when poured first has to melt this sheet with the result that the metal may not actually reach the entire surface of the stone to be set. In this way air holes will form in the mount and the stone will not besecurely held.
The object of this invention is to so mount the stone that it will be substantially completely incased in the mount, care being also taken that the-molten metal will reach every part of the surface of the stone in such a way that the skin or surface layer thereof is not destroyed. Q
In carrying out the above and other objects of the invention, I employ supporting means which hold the stone in spaced relation from the base of the mold and for permitting metal to flow. to substantially entirely surround the stone. vSuch supporting means here take the form of a holder extending above the imperforate base of the mold, together with a fusible supporting element of imperforate character, such as wire mesh, between the holder and the stone, which permits the metal to make a hit and miss contact with the stone to reach all parts of the surface thereof without deto entirely incase the stone.
In the accompanying drawings the invention is disclosed in-a concrete and preferred form.
In said drawings: Figure 1 is a vertical sectional view of a mold embodying the in 'vention. Fig. 2 is a vertical sectional view of the mount showing the" stone embedded. -F1g. 3 is a sectional view showing a modified form of the invention.
element interposed between the stone and the holder.
In Fig. 1 the fusible supporting element 8 is wrapped around the stone and its mid dle portion 9 formed into a tail which is inserted in the holder 4. In Fig. 3 theelement 8 is also wrapped around the stone and the free ends 10 thereof are rolled up into coils or the like vwhich then are inserted in the holder 4. When the metal is poured it not only fills the moldchamber, but also passes TlItO the holder 4- with the result that the stone is substantially entirely incased in the metal. In so doing, the fusible element is melted by the metal. Owing to the perforate or mesh character of this fusible element, the entire surface of the stone is reached by a hit and miss contact with the molten metal, and the stone becomes firmly embedded in the holder without destroying its skin.
In Fig. 2 is shown the casting. Here the stone 7 is shown completely embedded in the mount 11. The metal is then cut away to expose such part of the stone as may be desired, the cuts being substantially along the dotted lines 12.
What is claimed is:
1. An apparatus of the character set forth comprising: a mold, and a hollow supporting means for the stone to be set for holding said stone in spaced relation from the' base of the mold and for permitting metal to flow into the hollow supporting means the stone to be set above the base of the mold, and a fusible perforate supporting element interposed between the holder and the stone for permitting metal to flow to substantially entirely surround the stone, the molten metal making a hit and miss contact with the stone.
Signed at London, England, this 18th day of October. A. D. 1915.
GEORGE ALBERT JOYCE.
\Vitness A. A. HAGGER.
US5993715A 1915-11-06 1915-11-06 Diamond-tool mold. Expired - Lifetime US1174073A (en)

Priority Applications (1)

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US5993715A US1174073A (en) 1915-11-06 1915-11-06 Diamond-tool mold.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US5993715A US1174073A (en) 1915-11-06 1915-11-06 Diamond-tool mold.

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US1174073A true US1174073A (en) 1916-03-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2564751A (en) * 1945-05-19 1951-08-21 Lawrence H Cook Grenade

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2564751A (en) * 1945-05-19 1951-08-21 Lawrence H Cook Grenade

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