312 On the Construction of Kitchen 



The shelf might easily be made of cast iron, as might 

 also the dripping-pans and the double door of the oven ; 

 and I should not be surprised if English workmen should 

 succeed in making even the front of the oven and the 

 register of the air-chamber, and every other part of the 

 machinery, of that cheap and most useful metal. 



If the shelf be made of cast iron, to save the trouble 

 of riveting in making it double, it may be covered by 

 an inverted shallow pan of cast iron ; and in the bottom 

 of this pan, which will be uppermost when it is inverted, 

 there may be cast two shallow grooves, both in the 

 direction of the length of the pan, and consequently 

 parallel to each other, in which grooves (which may be 

 situated about an inch from the sides of the inverted 

 pan) two parallel projections at a proper distance from 

 each other, cast at the bottom of the lower dripping- 

 pan, may pass. These projections, passing freely in 

 the grooves which receive them, will serve to keep the 

 dripping-pan steady in its proper direction when it is 

 pushed into or drawn out of the oven. 



To increase the effect of the air-chamber when this 

 oven is used for roasting meat, a certain quantity of 

 iron wire in loose coils, or of iron turnings, may be put 

 into the air-chamber. 



The door of the oven, which is very distinctly repre- 

 sented in the Fig. 21, should be about 19 inches in 

 diameter, if the oven is 18 inches in diameter within, or 

 in the clear. In this figure the internal edge or corner 

 of the hither end of the body of the oven is indicated 

 by a dotted circle, and the position of the shelf is pointed 

 out by a horizontal dotted line. 



In fastening the vertical plate, which forms the front 

 of the oven, to the projecting flange at the hither end 



