US193314A - Improvement in finishing glassware - Google Patents
Improvement in finishing glassware Download PDFInfo
- Publication number
- US193314A US193314A US193314DA US193314A US 193314 A US193314 A US 193314A US 193314D A US193314D A US 193314DA US 193314 A US193314 A US 193314A
- Authority
- US
- United States
- Prior art keywords
- steam
- improvement
- finishing
- glassware
- furnace
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000446 fuel Substances 0.000 description 8
- 238000002845 discoloration Methods 0.000 description 6
- 239000011521 glass Substances 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000003303 reheating Methods 0.000 description 4
- 206010022000 Influenza Diseases 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003472 neutralizing Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B29/00—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins
- C03B29/02—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins in a discontinuous way
Definitions
- My invention relates to that class of glassfinishing furnaces which are vulgarly known as glory-holes, the name being applied to them on account of the great brilliancy of flame in the work-holes and radiating therefrom.
- Glassware requiring to be finished by forming operations must be reheated or warmed in in order to render it sufiiciently plastic to be shaped by the tools. This reheating is done in the work-holes-of the gloryhole furnace. The articleis caught in a snap and presented to the flame in the workholes until brought to the required plasticity.
- the combustion-chamber a, the dome of which is known as the warming-in chamher.
- the work-holes b are made in the sides of the latter.
- the grate is shown at c,- the air-opening atf. I surround the chamber a with a coil of steam-pipe, d, having two discharge-openings, e.
- the steam is superheatedby the furnace while passing through the coil.
- These pipes may be built in the wall or formed as flues in the wall, and may discharge the steam from any desired number of openings, or from small perforations made in any part of the entire circuit of the same.
- the steam-pipes can enter directly through the walls of the furnace, and not encircle them, or be otherwise so arranged as to superheat the steam.
Description
- G. w. BLAIR. FINISHING GLASSW'ARE.
No. 193,314. W Patented July 24,1877.
UNITED STATES OFFICE.
GEORGE W. BLAIR, OF PITTSBURG, PENNSYLVANIA.
IMPROVEMENT IN FINISHING GLASSWARE.
Specification forming part of Letters Patent No. 193,314, dated July 24,1877; application filed May 29, 1877.
To all whom it may concern:
Be it known that I, GEO. W. BLAIR, of the city of Pittsburg, county of Allegheny, State of Pennsylvania, havemade a certain new and useful Improvement in the Finishing of Glassware, of which the following is a full, clear, and exact description, reference being bad to the accompanying drawings, in which Figure l is a vertical section of a gloryhole furnace, and Fig. 2 is a section through an m, Fig. 1.
'Like letters of reference indicate like parts in each.
My invention relates to that class of glassfinishing furnaces which are vulgarly known as glory-holes, the name being applied to them on account of the great brilliancy of flame in the work-holes and radiating therefrom. Glassware requiring to be finished by forming operations must be reheated or warmed in in order to render it sufiiciently plastic to be shaped by the tools. This reheating is done in the work-holes-of the gloryhole furnace. The articleis caught in a snap and presented to the flame in the workholes until brought to the required plasticity.
There is a great objection to the reheating operation, and one which is the cause of serious loss to the manufacturer. It is the discoloration of the glass vulgarly known as sulphuring. The exact cause of it has never been satisfactorily determined. It has been explained invarious ways; but it is a fact that it has never heretofore been entirely prevented. A
The best results have been obtained by the use of gas as fuel; but even this does not entirely prevent it, and has the objection of being very expensive. a
I have discovered by practical experience that the use of steam, and more especially of superheated steam, in the combustion-chamber, almost, if not entirely, prevents this discoloration, and gives a far better result than any heretofore obtained by the use of ordinary fuel.
The injection of the steam into the flame below the work-holes has the effect of destroying or neutralizing in some way the objectionable effect otherwise heretofore uniformly produced with such fuel.
My experience in the use of this invention in my own works has been that the natural brilliancy of the glass is thereby preserved in the finishing operation.
The drawings illustrate the construction of an ordinary form of glory-hole furnace.
It has a combustion-chamber, a, the dome of which is known as the warming-in chamher. The work-holes b are made in the sides of the latter. The grate is shown at c,- the air-opening atf. I surround the chamber a with a coil of steam-pipe, d, having two discharge-openings, e. The steam is superheatedby the furnace while passing through the coil.
These pipes may be built in the wall or formed as flues in the wall, and may discharge the steam from any desired number of openings, or from small perforations made in any part of the entire circuit of the same.
It is not necessary that the steam should be superheated, and in case it is not desired to be so the steam-pipes can enter directly through the walls of the furnace, and not encircle them, or be otherwise so arranged as to superheat the steam.
I am aware that steam has been used in glass-meltin g and other furnaces to aid in the combustion of smoke; but I am not aware-of its use as an agent to clarify the flame of known and commonly used fuels to render them suitable for the purpose of finishing glassware.
1 therefore claim as my invention- The process herein described, which consists in the application of steam in a glassflnishing furnace as an agent to clarify the flame, and prevent the discoloration of the glass, substantially as described.
GEO. .W. BLAIR.
Publications (1)
Publication Number | Publication Date |
---|---|
US193314A true US193314A (en) | 1877-07-24 |
Family
ID=2262720
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US193314D Expired - Lifetime US193314A (en) | Improvement in finishing glassware |
Country Status (1)
Country | Link |
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US (1) | US193314A (en) |
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- US US193314D patent/US193314A/en not_active Expired - Lifetime
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