GLASS FORMING APPARATUS

• US 20160221855A1
• Filed: 02/04/2016
• Published: 08/04/2016
• Est. Priority Date: 02/04/2015
• Status: Abandoned Application

• Current Assignee: Pyrotek Incorporated
• Original Assignee: Pyrotek Incorporated
• Inventors: Retorick, Rickie L., Pokrzyk, John A., March, Timothy D., Palmer, Mark
• Application Number:
  US15/015,772
• Publication Number:
  US 20160221855A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: C03B 7/086 Plunger mechanisms
• CPC Class Codes: C03B 7/088 Outlets, e.g. orifice rings

Abstract

According to a first embodiment, a refractory orifice ring of a glass forming apparatus is provided. The orifice ring includes an annular side wall and a base wall. At least one discharge hole is formed in the base wall. The discharge hole includes a top opening and a bottom opening, wherein the top opening has a surface area greater than a surface area of the bottom opening.

Claims

1. A refractory orifice ring of a glass forming apparatus, said orifice ring comprising:

an annular side wall,

and a base wall,

at least one discharge hole formed in said base wall,

said discharge hole having a top opening and a bottom opening, wherein said top opening includes a surface area which is larger than a surface area of said bottom opening.

2. The orifice ring of claim 1, wherein said base wall includes a planar top surface.

3. The orifice ring of claim 1, wherein said base wall includes a bottom surface said bottom surface including a projecting neck surrounding said discharge hole bottom opening.

4. The orifice ring of claim 3, wherein said top opening and said bottom opening are circular.

5. The orifice ring of claim 4, wherein a sidewall extends between the top opening and the bottom opening said sidewall comprising a truncated cone.

6. The orifice ring of claim 5, wherein said truncated cone intersects a ledge adjacent the bottom opening.

7. The orifice ring of claim 5, wherein said truncated cone extends partially through said base wall and intersects a cylindrical passage leading to said bottom opening.

8. The orifice ring of claim 1, wherein said base wall has a height greater than a height of said annular side wall.

9. The orifice ring of claim 1, wherein said base wall has a height greater than a width of said annular side wall.

10. The orifice ring of claim 1, wherein an inner surface of said annular side wall is inwardly sloped as said side wall approaches said base wall.

11. The orifice ring of claim 1 including at least two discharge holes.

12. The orifice ring of claim 1 being one of circular and elliptical in cross-section.

13. The orifice ring of claim 1, wherein said orifice ring is comprised of a refractory material.

14. The orifice ring of claim 1, wherein a corner between said base wall and said discharge hole is one of chamfered and radiused.

15. The orifice ring of claim 1, wherein a corner between said annular sidewall and said base wall is one of chamfered and filleted.

16. The orifice ring of claim 1, wherein an exterior surface of said base wall comprises a truncated cone.

17. A method of forming a molten glass gob comprising passing molten glass through the orifice ring of claim 1.

18. A glass feeding apparatus comprising:

a spout bowl configured to contain molten glass and including a neck portion at a bottom, the neck portion including a vertical passage extending therethrough from an upper inlet opening to a lower outlet opening, the orifice ring of claim 1 disposed at the lower outlet opening, and at least one plunger.

19. A refractory orifice ring of a glass forming apparatus, said orifice ring comprising:

an annular side wall,

and a base wall,

at least one discharge hole formed in said base wall,

said discharge hole having a top opening and a bottom opening, wherein said top opening includes a width at a smallest dimension greater than a width of said bottom opening at a largest dimension.