US1694650A - Kiln - Google Patents

Description

Dec 11, 1928.

B. H. GREENE KILN Filed Dec. 30, 1927 2 Sheets-Sheet 2 Patented en. 11, 1928.

BAnrnonoMnW n. enanas, or snnnine, onio.

KILN.

Application filed 'December 30. 19537.

',l` he invention relates to pottery kilns and more particularly to a kiln provided with shelves ior supporting the articles to be fired.

The obyect of the ni'iproveiient is to provide a kiln especially adapted lor hiring articles such as the back walls for radiant gas heaters and the like.

Such articles are usually ldecorated upon their upper surfaces and for this reason cannot be stacked one upon the other in the kiln as the decorated tops of the articles would thus be damaged by the placing of other articles thereon.

Such articles are too large to be placed in saggars for firing and consequently it is customary practice to place these back walls in a single row or tier upon the 'floor of the kiln, thus making it possible to lire only a small number of the articles at a time.

The present invention contemplates the provision of refractory shelves around the walls of the kiln for supporting articles such as the back walls referred to, these shelves extending throughout the entire height of the kiln whereby a great number of the back walls may be fired at one time.

This construction also leaves the entire central portion of the kiln unobstructed, permitting saggars containing smaller articles toh be stacked therein.

nu embodiment of the invention is illustrated in the accompanying drawings, in which- Figure l is a vertical sectional view through a kiln provided with the improved. shelving` to which the invention pertains, and

Fig. 2, a transverse section through the same, taken substantially on the line 2 2, of Fig. l.

Similar numerals refer to similar parts throughout the drawings.

The invention is illustrated as applied to a round or circular kiln but it should be understood that this is merely for the purpose of illustration and that the invention may be applied to any shape of kiln.

The kiln comprises generally the floor l, side walls 2 and crown 3, the usual lire boxes being provided as indicated at 4L.

ln tiring articles such as the back walls for radiant gas heaters, it is not practical to place articles of this size and shape in saggars and the articles themselves cannot be stacked one upon another without considerable damage to the same.

For this reason, it is eustmnary to place Serial No. 243,571.

only a single row or tier of the back walls upon thesiloor of a kiln. This results in considerable waste of space within the kiln and correspondingly increases the cost of production of these articles.

ln order to overcome these objections and f to permit the maximum number of suoli articles to be tired at a time, the present inven tion contemplates the provision of shelving around the side walls of the kiln, extending from the iloor to the crown thereof and adapted to support independent rows or tiers of the back walls or the like out of contact with each other, leaving the ent-ire central portion of the kiln unobstructed for the purpose of stacking saggars containing small articles such as the radiante for radiant gas heaters.

This shelvingl may comprise the vertical partit-ion walls 5 preferably spaced from the side walls of the kiln and supporting the fire brick shelves 6.

These shelves are preferably provided with the central slots 7 to permit the hot gases and products of combustion to pass upward through and around the articles supported by the shelves.

A space as shown at 8 is also provided be tween the back edge of each shelf and the side wall of the kiln for the purpose of permitting the hot products of combustion to pass upward through the same and around the articles upon the shelves, and in order to prevent the entire shelving from becoming twisted or racked, certain ofthe shelves may be provided with the rearwardly projecting lugs 9 engaging the side walls of the kiln.

The back walls to be fired, as indicated at l0, are then placed in upright position, upon the shelves, in the manner illustrated, several of the back walls being placed within yeach compartment thus formed, being spaced from each other and from the partitions and next upper shelves.

The heat thus passes entirely around every side of each article to be fired, passing upward around the front and back edges of the shelves and through the central slots thereof.

The entire central rportion of the kiln is thus left unobstructed and open in order to permit saggars, as shown at 1l, containing smaller articles such as the radiante for ra-` diant gas heaters, to be stacked therein to the top of the kiln.

I claim: Y

n kiln having a door, side walls and a reeaeeo crown, and refractory shelves adjacent to the side walls and extending from the floor to the crown, for supporting articles to be ired, the shelves being spaced at their reai` edges from the side Walls.

2. A kiln having a floor, side walls and a crown, and refractory shelves adjacent to the side Walls and extending from the ioor to the crown, for supporting articles to be fired, the shelves being` spaced at their rear edges from the side Walls, certain of the shelves having lugs at their rear edges engaging the side Walls.

3. A kiln having a Hoor, side Walls and a crown, and refractory shelves adjacent to the side Walls and extending from the floor to the crown, for supporting articles to be fired, the shelves being spaced at their rear `edges from the side walls, the shelves having slots in their central portions.

4. A kiln having a floor, side Walls and a crown, and refractory shelves adjacent to the side Walls and extending from the floor to the crown, for supporting articles to be fired, the shelves being spaced at their rear edges from the side Walls, the shelves having slots in their central portions, certain of the shelves having lugs at their rear edges engaging the side Walls.

In testimony that I claiin the above, I have hereunto subscribed iny naine.

BARTHOLOMEN7 H. GREENE.

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