WINDOWS 



101 



its lower edge; this type of window is specially suited to 

 buildings in which stock is housed and, elsewhere in this 

 book, is referred to as a drop back window. If the sash 

 swings on a horizontal axis at its mid-height, it is said to 

 be centre-hung. 



(c) Vertically hung sashes. Each sash swings about one of its 



vertical edges, e.g., in casement windows the sashes are 

 vertically hung. Casement windows are specially suitable 

 for dwellings, though they may also be used for certain 

 farm buildings such as dairies, seed -rooms, etc. 



(d) Box frame with sliding sashes balanced by weights on cords. 



This type is suitable for dwelling-houses, and may find 

 a limited use in farm buildings. 



Fio. HO. 



Vam 



A solid frame is illustrated by Fig. 110. It is similar to a door 

 frame, and consists of two uprights or posts, a cross-piece or head, 

 and a sill. These parts are either mortised and tenoned together, or 

 the posts are merely checked into the head and sill as in Fig. 110. 

 The ends of the sill and head project beyond the posts, and 

 the "horns" so formed are built into the brickwork surrounding the 

 window opening. The frame is rebated (i.e. recessed) all round to receive 

 the sash, which is generally put in from the inside of the building and 



