File:AmCyc Brick - Hoffmann's Annular Brick Furnace (side).jpg
AmCyc_Brick_-_Hoffmann's_Annular_Brick_Furnace_(side).jpg (708 × 398 pixels, file size: 80 KB, MIME type: image/jpeg)
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DescriptionAmCyc Brick - Hoffmann's Annular Brick Furnace (side).jpg |
English: Woodcut/drawing of an annular brick furnace (side view), designed by Friedrich Hoffman. |
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Date | published 1879 | |||
Source | The American Cyclopædia, v. 3, 1879, p. 267 (Fig. 1, top). | |||
Author | unknown artist/Friedrich Hoffman, designer | |||
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Description:
A large annular chamber, with openings at the sides for the reception of the bricks, is constructed with a central chimney, and with removable divisions for separating the annulus into different parts. When the furnace is filled with unburnt bricks heat is applied to one division, the smoke and hot air escaping into the adjoining one, which is the next to be burnt, the air for maintaining the combustion being received through the compartment last burned, whereby the bricks in it are cooled. Each compartment of bricks or other articles is thus burned in turn, the waste heat of the burning compartment continually drying the compartment before it, and taking all the heat of the one behind. The letters a a mark the circular arched furnace, furnished with doors, b b. Flues, c c, lead to the circular chamber e e, surrounding the chimney, d. Valves of cast iron are made to close at pleasure the orifices of the flues. Movable sluices in the dividing walls allow of communication to be made or closed between the chambers; h h are plugs through which the coal, in powder, is introduced, undergoing calcination.
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current | 20:29, 13 March 2014 | 708 × 398 (80 KB) | Library Guy (talk | contribs) | {{Information |Description ={{en|1=Woodcut/drawing of an annular brick furnace (side view), designed by Friedrich Hoffman.}} |Source =''The American Cyclopædia'', v. 3, 1879, p. 267 (Fig. 1, top). |Author =unknown artist/Friedrich H... |
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