192 



MALT KILN 



is laid : o is the grate, 9 inches below the sole of the oven b ; c c c c are the four nine- 

 inch strong pillars of brickwork which bear the lintel m ; d d d d are strong nine- 

 inch pillars, which support the girder and joists upon which perforated plates repose ; 

 c denotes a vaulted arch on each of the four sides of the oven ; / is the space between 

 the kiln and the side arch, into which a workman may enter to inspect and clean the 

 kiln ; g g, the walls on either side of the kiln, upon which the arches rest ; h, the space 

 for the ashes to fall ; k, the fire-door of the kiln ; 1 1, junction-pieces to connect the 

 pipes r r with the kiln ; the mode of attaching them is shown in Jiff. 1425. These 

 smoke-pipes lie about three feet under the iron plates, and at the same distance from 

 the side walls ; they are supported upon iron props, which are made fast to the arches. 

 In Jiff. 1424, M shows their section; at s s,fig. 1425, they enter the chimney, which is 

 provided with two register or damper plates, to regulate the draught through the 



1425 



1426 



jpipes. These registers are represented by 1 1, fig. 1426, which shows a perpendicular 

 section of the chimney, m, fig. 1424, is the lintel, which causes the heated air to spread 

 laterally, instead of ascending in one mass in the middle, and prevents any com- 

 bustible particles from falling upon the iron cupola, n n are the main girders of iron 

 for the iron beams o o, upon which the perforated plates p lie ; q, fig. 1 424, is the 

 vapour-pipe in the middle of the roof, which allows the steam of the drying malt to 

 escape. The kiln may be heated either with coal or wood. 



The size of this kiln is about 20 feet square ; but it may be made proportionally 

 'either smaller or greater. The perforated floor should be large enough to receive the 

 contents of one steep or couch. 



The perforated plate might be conveniently heated by steam-pipes, laid zigzag, 

 or in parallel lines under it; or a wire-gauze web might be stretched upon such 

 pipes. The wooden joists of a common floor would answer perfectly to support 

 this steam-range, and the heat of the pipes would cause an abundant circulation 

 of air. For drying the pale malt of the ale-brewer, this plan is particularly well 

 adapted. 



1427 





The improved malt kiln of Pistorin is represented, fig. 1427, in a top view ; fig. 1428. 

 in a longitudinal view and section ; and^-. 1429, in transverse section. a, a, are two 



