STYLE. 



57 



power. That water may not lodge in the 

 under groove, the bottom of it is bevelled 

 slightly outwards, and spaces 4 inches long 

 and half an inch deep are cut out on the 

 under side of it, so that the water may es- 

 cape, as well as to allow a free circulation 

 of air to pass under the lower sides of the 

 panels, which, for this purpose, as well as 

 for facilitating their movement, are set on 

 small gun-barrel castors. A separate 

 chain and pulley is attached to each side 

 set of ventilators : this might be easily 

 avoided by connecting the movement at 

 top ; but as in that case it would require 

 to be thrown off and on gear to suit the 

 side intended to be opened, it is question- 

 able if the double movement is the best. 



Plate VII., fig. 1, shows the end eleva- 

 tion of the vineries, peach-houses, green- 

 house, pine-stoves, &c. ; and fig. 2 the 

 arrangement made for opening and shut- 

 ting the doors, by running them back in 

 front of the walls behind the wooden 

 architraves, instead of hanging them in 

 the usual manner. We should also ob- 

 serve that the doors are suspended from 

 above, thereby securing a greater facility 

 of movement. 



Hate VII., fig. 3, shows the end eleva- 

 tion of the centre house, with the porch 

 or lobby, and, in connection with fig. 4, 

 the section, exhibits the inner door partly 

 open, and partly run back into the 

 centre of the wall at c ; a is the lobby ; 

 e the stone plinth or base on which the 

 framework of the porch rests ; b is the 

 outer door in two parts, hung in the usual 

 manner, as it would be impossible to hang 

 it upon the same principle as the others. 



Fig. 32 is a side view of the lobby, 

 and one side of its roof, with the side 

 and roof of the house, and the side and 

 roof of the ridge-ventilator at top. The 

 sides a a are in panels on both sides 

 alike, each alternate panel being a 

 fixture, while the others are movable, 

 and are in this case made to swing 

 outwards, being attached to a common 

 axle of 1^-inch iron rod, the whole length, 

 and acted upon as shown in fig. 31, and 

 already described. The top of this venti- 

 lator, as is the case with all the others, is a 

 fixture, and glazed in panels, b b, the same 

 length as the side ones. By this means roof 

 ventilation can be effected during rain, as 

 the glass on the top projects over the 

 framework of the other parts of the venti- 



VOL. I. 



lator. The side openings have each a sepa- 

 rate moving power; so that, when the 

 Fig. 32. 





1 



11— i 1 6 II 1 



a 



















XX 



1 















wind or rain is from the west, the eastern 

 sides may be opened, and vice versa. 



Fig. 33 shows the section of the top 

 ventilators, with the roof astragals attach- 

 ed thereto. In this case the glass panels 

 a a a a are shown on each side of the 

 pilasters b b, which connect the top and 

 bottom parts together. The inner panels 

 are fixtures, while the outer ones are the 

 movable ones; these run in a groove 

 at top and bottom, and are furnished 

 with brass rollers to facilitate the move- 

 ment. These movable panels are at- 

 tached together, and connected with a 

 chain placed in a box built in the back 

 wall, which, passing over a pulley, is 

 wound up or unwound by a key. To 

 prevent water resting in the groove in 



H 



