US483915A

US483915A - Glass-melting furnace

Info

Publication number: US483915A
Authority: US
Publication date: 1892-10-04
Anticipated expiration: 1909-10-04

Description

2 Sheets-Sheet 1.

(No Model.)

B. GRAY. GLASS MELTING FURNACE.

a mum: ve'rzns ca. PHOTDUTIKL, wunmu (No Model.) 2 Sheets-Sheet 2.

R. GRAY. GLASS MBLTING FURNACE.

No. 483,915. Patented Oct. 4, 1892 Zr 5.. i I

e e e "V;eW///// UNITED STATES PATENT OFFICE.

RALPH GRAY, OF ANDERSON, INDIANA.

GLASS-MELTING FURNACE.

SPECIFICATION forming part of Letters Patent No. 483,915, dated October 4, 1892.

Application filed June 18, 1892- Serial No. 437,187. (No model.)

To all whom it may concern.-

Be it known that I, RALPH GRAY, a citizen of the United States, and a resident of Anderson, in the county of Madison and State of Indiana, have invented certain new and useful Improvementsin Glass-MeltingFurnaces; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawin gs, and to letters of reference marked thereon, which form a part of this specification.

Figure 1 of the drawings is a vertical section. Fig. 2 is a horizontal section taken on line a m, Fig. 1. Fig. 8 is a horizontal section and plan View of a modification. Fig. i is an enlarged detail section of burner-pipe.

The object of this invention is to provide certain new and useful improvements in furnaces for melting sand and other ingredients for the manufacture of glass; and it consists in the novel construction and combination of parts, all as hereinafter specified.

The invention more particularly relates to that class of furnaces for this purpose in which natural or other gas is used for producing the necessary heat; and it consists in the peculiar arrangement of the burners whereby not only the operation of melting is much more quickly effected than formerly, but a large saving of gas is produced, together with other important results hereinafter referred to.

In the accompanying drawings, the letter A designates the furnace, which is generally of the ordinary construction, one side being shown as broken away to disclose the inte- IlOl'.

B B designate the pots, which are usually arranged in a circle around the base of the f u rnace upon the benches c.

D designates the usual burner pipe, arranged in the central lower portion of the base, inside the circle of pots, and supplied by the service-pipe D, entering the furnace through the side wall thereof at d. In addition to this central burner commonly used, I employa series of burner-pipes E, the mouths of which are located just outside of the furnace-wall and in front of openings e therein.

These pipes are so arranged as to each throw a flame through its respective aperture e between two adjacent pots;

E are the mixers and regulators for the pipes E.

By placing the pipes outside of the furnace they are protected from the intense heat therein and are kept cool by the low temperature of the gas from the well. It will be observed that by means of these burners, in combination with the central burner, the pots are subjected to an intense heat from all sides, which results in the fusion of the charges in a much shorter period about four hours sooner-'than in the old style of furnace. Owing to this saving in the time required for the operation and the location of the burners at points where the maximum available heat is utilized, a great saving of gas is effected. A further advantage is that, owing to the intensified heat, a large saving of salt-cake may be effected, amounting to about seven pounds to everyone hundred pounds of sand. A saving of the fuel required for burning up the salt-Water used as an attendant in the operation of melting glass is also obtained, inasmuch as the intensified heat of the combined burners consumes eighty per cent. of such water. In the old style, where the heat is supplied solely by the central burner, it often happens that the inner portion of the pot is melted and destroyed before the sand is fused. This is prevented by this invention. A more perfect fusion is also obtained, producing a superior quality of glass, and this is also true in warm weather, which cannot be done in the old style of furnace.

In the accompanying drawingsl have shown the invention applied to a round furnace, such as is commonly employed in melting flint. It is, however, obvious that it may be equally as well applied to the angular or oblong furnaces, such as are used in making window, plate, and other kinds of glass.

Having described this invention, what I claim, and desire to secure by Letters Patent, 1s-

1. In a gas-furnace for the manufacture of glass, the combination, with the pots and cen-' tral burner-pipe therefor, of the additional burners arranged to direct their flames from reet their flames through the said apertures the outside between adjacent pots, substanbetween adjacent pots, substantially as specitially as specified. fied.

2. In a gas-furnace for the manufacture of In testimony WhereofI affix my signature in 5 1 glass, the colmbination of a series of pots, a, presence of two Witnesses.

urner-pipe coated centrally within the space 1 inclosed by said series, the surrounding fur- RALPH GRAY nace-wall having a series of apertures there- Witnesses: through, and a series of burner-pipes located R. H. GILBERT, 1o exteriorly of the furnace and arranged to di- I BERT HARMON.