Fire-places and Kitchen Utensils. 293 



piece must also be made to pass through a small block- 

 of wood, about an inch square for instance, and one 

 third of an inch thick, which w r ill give these rivets a 

 proper bearing, without any strain on the iron door 

 which can tend to alter its form. 



When the wood and the iron are firmly riveted to- 

 gether, the superfluous paper may be taken away with 

 a knife. 



The hinges of the door, which in the Fig. 18 are 

 seen projecting outwards on the right hand, are to be 

 riveted to the outside surface of the circular iron door ; 

 and, in order that they may not prevent the panel from 

 applying properly to the door, they are to be let into 

 the wood. The turn-buckles, by which the door is 

 fastened, must be made to press against the outside 

 or front of the wooden frame. 



No inconvenience of any importance will arise from 

 leaving the wooden panel square, while the door itself 

 is circular ; but, if it should be thought better, the cor- 

 ners of the panels may be taken off, or the wooden 

 panel may be made circular. This should not, however, 

 be done till after the panel has been fixed to the door. 

 After this has been done, as the rivets will be sufficient 

 to hold the sides of the frame in their places, the cut- 

 ting off of the corners of the frame will produce no 

 bad consequences. 



I have been the more particular in my account of 

 the manner of covering iron doors with wooden pan- 

 els, for the purpose of confining heat, as this contriv- 

 ance may be used with great advantage, not only for 

 roasters and ovens, but also for a variety of other pur- 

 poses ; for the covers of large boilers, for instance, for 

 the doors of hot closets, steam closets, etc. 



