CHIMNEY NOTCH TYPE 



ADAPTATION TO LOCATION AND USE 



Because of the raised back and the chimney 

 notch effect which takes the place of a chimney, 

 when a soUd plate is used for the top, it is 

 essential that this fireplace, so far as is prac- 

 tical, be oriented to take advantage of the 

 prevailing wind. 



This fireplace, especially with the solid plate, 

 is adapted for use on campgrounds, especially 

 if the hearth is raised to make the top of the 

 plate approximately 14 to 16 inches above the 

 ground. 



This type is a "cross" between an open fire- 

 place with a solid back (pi. VII) and the low 

 chimney type (pi. X). Its distinct advantage is 

 that it is easily converted from a fairly efficient 

 cooking hreplace vnth an iron plate cooking 

 surface, into an open reflecting fireplace for 

 campfire use in the evening. 



DESIGN AND CONSTRUCTION 



Converting this unit from a cooking fireplace to 

 a campfire is accomplished by tilting the top 

 plate against the notch with the narrow side 

 resting on the hearth at the back of the firebox, 

 as shown in figure 2. 



The dimensions of the firebox and of the top 

 plate are so related that the plate when stood 

 on its narrow side will easily fit into the firebox 



as shown in figure 2. The depth of the firebox 

 from front to back should be 2 inches less than 

 the width. In order to have the plate set on the 

 top of the fire-clay brick lining, the plate should 

 be 4 inches longer than the width of the firebox, 

 thus allowing a 2-inch overlap on each end of 

 the plate. In this instance, the width of the fire- 

 box is 16 inches and the depth of the firebox is 

 14 inches. The length of the plate is 20 inches 

 and the width of the plate is 14 inches. 



This structure is also supported on a reen- 

 forced concrete floating pad. The hearth is 

 constructed of fire-clay brick, and the firebox 

 is Uned with fire-clay brick, including the 

 chimney notch. The stonework partially con- 

 ceals the fire-clay brick, as shown in the 

 drawing. 



The grate or plate should be removable, with 

 the flange on the front edge of the plate turned 

 down, and the flange on the rear edge turned 

 up, and it should be attached by a chain to the 

 stonework. The bent flanges will tend to pre- 

 vent sagging. (See pi. XXII, fig. 4.) 



VARIATIONS IN DESIGN 



The only variation in design which seems of 

 sufficient importance is the raising of the 

 hearth where this unit is used primarily for 

 campgrounds. 



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