US307829A

US307829A - Gas-furnace for melting glass

Info

Publication number: US307829A
Authority: US
Publication date: 1884-11-11
Anticipated expiration: 1901-11-11

Description

(No Model.)

J. ANDERSON.

GAS FURNAGE FOR MELTING GLASS, M. No. 307,829. Patented Nov. 11, 1884.

h I E111 u 1'. 1. Adm/M 4 A414 dif J I llNiTnn STATES PATENT @rrrcn- JOSEPH ANDERSON, OF PITTSBURG, PENNSYLVANIA.

GAS-FURNACE FOR MELTING GLASS, 8 4,0.

SPECIFICATION forming part of Letters Patent No. 307,829, dated November 11, 1884.

Application filed August 28, IFS-l. (N model.)

To (oZZ whom it may concern;

Be it known that I, JosEPH ANDERSON, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Gas-Furnaces for Melting Glass, &c.; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates particularly to the construction of glass-melting furnaces designed for use with gas, and more particularly natural gas; and it consists of certain improvements on the construction shown in my application, No. 137,395, filed July 11, 1884. The natural gas being supplied by means of mains and service or distributing pipes to the various works and places of use, itis olten necessary for the gas companies to turn off the gas in order to make the attachments or re pairs, and the gas is frequently turned off for a sufficient length of time to chill the glass in the pots, so that not only is the melt or batch lost, but the furnace is practically destroyed, as itis necessary to take it down to remove the pots. Consequently it becomes a very serious difficulty in the use of gas for such purposes.

My invention is designed, among other things, to obviate this danger and to provide means for sustaining the temperature of the furnace in case the gas is turned off.

To enable others skilled in the art to make and use my invention, I will now describe it by reference to the accompanying drawings, in which-- Figure 1 is a vertical sectional view of a glass-melting furnace, showing my improve ment. Fig. 2 is a detached view of the gas pipes and burner. Fig. 3 is a sectional view on the line it x of Fig. 1.

Like letters of refercnceindicate like parts in each.

The furnace shown in the drawings is the ordinary form of a pot-furnace for melting glass, and the pipes shown in Fig. l are divided on the line y 3 of Fig. 2. The furnace has the usual bench, a, for supporting the pots '1), eye 0, crown d, work-holes c, and fiues f. Below the bench a is an air-chamber, g, having closed sides and a door or man-hole, 9. Above the crown d of the furnace is a ring or coil of pipe, it, having an open end, 7;, for the admissionof air, and a valve, 75 for regulating its supply to the chamber 9, so as to proportion it to the amount of gas admitted there to. The pipe k extends down the side of the furnace, either outside of the wall, as shown at 7:", or through the wall, if desired, to the side of the chamber 9, which it enters through the wall 9 The pipe 70 is designed to effect the heating of the air which is supplied to the chamber 9, to support the combustion of the gas or other fuel therein. The air entering at the open end It is drawn through the coil 7;, and thence through the vertical pipe is, into the chamber 9 by the influence of the draft of the stack 71. The gas is supplied to the furnace by means of the pipes 'i, which extend through the walls 9* of the chamber 9, and are connected by suitable fittings with the gasmain The flow of the gas is regulated by means of the valves 2". The burner Z is composed of two semicircular pipes Z, forming a ring of larger diameter than that of the eye 0, so as to be under the protect-ion of the bench at, in order that in case of the breaking of a pot in the furnace the molten glass flowing down through the eye shall not come in contact with the burner and clog up its p erfora tions. The burner is perforated on its inner upper side, so that the jets of gas shall be projected toward the eye 0. Each semicircle of the pipes which form the burner is connected to one of the pipes i, in which is a union, i", so that if either of the semicircles Z becomes clogged up or needs repairs it can be taken out by detaching the pipe connected to it at the union 1 By this arrangement it is possible to remove one half of the burner without interrupting the operation of the other half, so that an accident to one portion will not endanger the furnace, as the heat can be sustained by the use of the remaining half.

Entering the horizontal pipes i at the littings a are smaller pipes m, which are connected to a supply-pipe, m, and which are provided with valves W. The pipe in is designed to supply benzine or other suitable light hydrocarbon; or it may be connected with agasholder or other reservoir of gas so as to be independent of the main 2' for its supply. This provision is made so that in case the gas-supply from the pipe 2' is turned off the fuel, gaseous or liquid, necessary for maintaining the heat of the furnace may be supplied from the pipe m, which can be accomplished merely by opening the valves m and allowing the gas or liquid fuel to flow therefrom to the burner through the pipes '1 In this manner I am enabled to obviate all danger to the furnace arising from the stoppage of gas from the main My improvement is of great value in aglassmelting orsimilar furnace where any interruption of the heat is attended with serious and detrimental results. It is simple and cheap in construction, easily operated, and trees the furnace from absolute dependence upon one fuelsupply.

I do not limit myself to the use of my improvement in glass furnaces, but claim it also in connection with other furnaces, especially those in which it is desirable to maintain a given temperature in the furnace.

\Vhat I claim as my invention, and desire to secure by Letters Patent, is-

1. The combination of a furnace gas-burner and its gassupply pipe or pipes with secondary supply -pipes communicating therewith and having suitable valves, whereby the burner can be supplied with fuel from said secondary supply-pipes, in case of the interruption of supply through its ordinary pipes, substantially as and for the purposes described.

2. A burner for heating purposes, composed of two semicircular sections, each connected to a separate pipe for supplying gaseous or liquid fuel thereto, and together forming a circularburner, substantially as and for the purposes described.

3. A burner for heating purposes, composed of two separate sections, each connected to a separate pipe for supplying gaseous or liquid fuel thereto, substantially as and for the purposes described.

In testimony whereof I have hereunto set my hand this 25th day of August, A. D. 1884.

J OSEP II ANDERSON.

Witnesses:

XVIB. COR\V1N, THOMAS E. KERR.