470 On the Construction of Kitchen 



These stoppers answer for confining the heat quite 

 as well, and perhaps even better, than double doors, 

 and they cost much less. They are fitted into square 

 frames of cast iron (nearly similar to that represented 

 in the Fig. 91), which are firmly fixed in the brick- 

 work by means of projecting flanges, which are cast 

 with them. The front edge of this frame or doorway 

 is ground and made perfectly level ; and the plate of 

 sheet iron, which forms a part of the stopper, being 

 made quite flat, shuts against the front edge of this 

 doorway, and closes the entrance into the fire-place 

 with the greatest accuracy. 



The entrance into the ash-pit is likewise closed by 

 a stopper, which is so contrived as to serve occasionally 

 as a register for regulating the quantity of air admitted 

 into the fire-place. 



As this register-stopper for the ash-pit of a small 

 closed fire-place is very simple in its construction, and 

 as I have found it to answer very well the purpose 

 for which it was contrived, I shall present the reader 

 with the following sketch of it, which will, I trust, 

 be sufficient to enable a workman of common inge- 



Fig. 91. 



nuity to construct, without difficulty, the thing which 

 is represented. 



The box with a flange at each of its ends forms the 



