US1797590A - Glass-tank furnace - Google Patents

Description

Malfcll 24, 1931. ol ROSENSTElN 1,797,590

GLASS TANK FURNACE Filed Aug. 25, 1926 w INVENTOR. N; l'o/ ML VM A TT ORNE YS.

Patented Mar. l24, 1931 UNITED STATES PATENT OFFICE OTTO .BOSENSTEIN, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO ILLINOIS PACIFIC GLASS CORPORATION, OF SAN FRANCISCO, CALIFORNIA, A CORPORATION OF CALI- GLASS-TANK FURNACE Application leo. August 23, 1926. Serial No. 130,958.

This invention relates to glass tank furnaces and especially to an improved construction thereof. To those skilled in the art it is well known that a very high and destructlve heat must be maintained in these furnaces. As a result of this high heat, the molten glass eats its way through the furnace wall blocks and particularly through the oints between the blocks, and the furnace walls must therefore be frequently rebuilt to remedy this defect. It is the object of this invention to so improve the construction of such a furnace as to avoid a very considerable amount of this destructive effect and thereby overcome the necessity of so frequently rebuilding the furnace walls.

In the accompanying drawing, I have illustrated one specific embodiment of my invention, but it will be understood that theinvention can be otherwise embodied and that the drawing is not to be construed as defining or limiting the scope of the invention, the claims appended to the specificationbeing relied upon for that purpose.

Referring to the figures of the drawing:

Fig. 1 is a fragmentary sectional view through a glass tank furnace embodying my invention.

Fig. 2 is a fragmentary'elevation of one of the inner side walls thereof.

In the drawing, 1 indicates the bottom wall and 2 one side wall of the furnace. walls are constructed of relatively large blocks 3 of heat-resisting clay. The greatest amount of deterioration of the side walls, as above referred to, takes place near the bottom and top of the furnace. This is particularly due to the pressure of the liquid bath being greatest at the bottom and the temperature thereof being greatest at the top. As has also been illustrated, the main deterioration .of the walls takes place at the horizontal joints between the blocks. In accordance with my invention, I so construct the side walls as to avoid locating an of these joints near these points of greatest estruction. illustrated in the drawing, I form the bottom and side walls of relatively large blocks 3, 50 but in constructing the side walls I use blocks 4 at the bottoms thereof which are of considerably less thickness vertically than the verti- .cal thickness of the bottom wall. It may be stated that the wear on the bottom 1 of the furnace is such that from onehalf inch to one inch of the upper side thereof deteriorates per year. The side wall joint 7 .essary.

The provision of this initial bottom 1layer of smaller blocks also brings the top surface of the next block 3 thereon to a position considerably above the bottom of the furnace. This arrangement furthermore sol elevates the next large block thereabove that t-he upper lsurface of this top large block is above the normal top surface 5 of the molten bath 6.

The result of the construction above described is as follows:

The first horizontal joint 7 between the side wall blocks is considerably below the bottom wall of the furnace and is therefore not affected by the molten bath. rlihe intermediate joint 8 is considerably above the bottom of the furnace and considerably below the normal top surface 5 of the molten bath. rIhis joint 8 is therefore located intermediate these most destructive points and is therefore less aected by the deleterious effects of the molten bath than when located near the bottom and top in the ordinary furnace construction.

The location of the greatest destructive effect on the furnace walls is indicated by broken lines in Figure 1 of the drawing. In my improved construction, the blocks are so arranged that the greatest resistance to this destructive effect is located at these points. By the use furnace walls need not be replaced until the same have deteriorated to substantially the amount indicated by the broken lines.

of this improved construction, the

It is believed that the construction ond mo teriei edvente s of my invention wii be clear from the a, ove description teken in con nection with the eccompnnying cirnwlng.,l

Heving thus describe my invention, what El claim anti desire to secure by Letters Patent 1s- 1*D A glass tank furnace ci the character described having e bottom Weil enti side Weils, seid side Walls comprising e lowerinost row of bricks Isubstentislly iess in verticei thiclmess than said bottoni Waii, e second row of bricks extending substentieiiy shove the top surface of ssii bottom weil en s; thirfi row of bricks extending to e point above the norinni top surface of the, moiten beth contained by tie'furnecc.

2. A giess tank furnace comprising e bottom Wal end side weils formen of horizontally dis oseni rows of bricks: the lowerinost row et ricks in sei side weils being epproximately one haii the thickness of seid bottom Weii whereby the other bricks in the side Wells may be repeatedly replaced without necessitating the (iistmrbsnce of seid lowermost row or bricks.

3. A. gess tank furnace comprising'e bottom wail and side Weils formed of horizontely disposeci rows of bricks, the iowermost row of bricks in seid side weils being approxa imeteiy one heli the thickness of said bottoni Wal whereby' the other bricks in the siiie Weils me be repeatedly replace@ without necessitating the disturbance of seid lowermost row' of bricks, emi whereby erosion of said bottom Wsl will not expose seid lowermost row' of' bricks to Contact With the beth within the furnace until seid bottom Well is worn to one half its originai thickness.,

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