Figure 63, horizontal section of the sides, showing also the plan of the sill.
Figure 64, a vertical section of the sill and top, showing the elevation of the pulley-style ?II and n, the pulleys let into the pulley-piece.
Figure 65, the horizontal section of the sides, showing also a plan of the head of the sash-frame.
rigure 66. the elevation of the outer side of the sash-frame : the outside lining being taken away in order to show the work within the sash-frame.
f g, the parting strip thstened by a pin : e d, one of the weights connected with the sash by means of a line going over the pulley c; the other end fixed to the edge of the sash.
Xote.—The weight d e is equal to half the weight of the sash.
Figure 67, part of the head of the sash-frame before put together.
Figure 6S. the edge of Figure 67.
Figure 69, the edge of the bottom, showing the manner of fixing the styles.
Figure 70, the plan of Figure 69.
Figure 71 and 72, sections of window-sills, with sections of the under-rail of the sash, showing the best 'nodes of con structing them in order to prevent the weather from driving under the sash-rail.
A. Section of the bottom-rail of the sash.
E. Section of the head tongued into the sill.
c. Section of the sill.
Figure 73, sections of the meeting-rails, with the side ele vations of the upright bars.
c. Rebate for the glass.
D. A square.
E. F. An astragal and hollow moulding.
G. Fillet.
Note.—The small letters denote the same parts of the under-sash.
Figure 7.1. section of an upright bar, with the plans of two horizontal bars, showing the franking or manner in which they are jut together, so as to keep the upright bars as strong as possible. The thickness of the tenon in general comes about one sixteenth of an inch to the edge of the hol low of the astragal, and close to the rebate on the other side.
h h. A dowel to keep the horizontal bars still firmer together.
Note.—The same parts in this have the letters of refer ence the same as Figure 73.
Note also. There is no rebate made for the glass on the inside of the meeting-bar; a groove being made to answer that purpose.
Figure 75.—Section of common shutters and sash-frame.
A. Section of the architrave.
B. Ground for the architrave.
F. Back lining of the boxing, tongued into the ground B, and into the inside lining a, of the sash-frame.
G. The inside lining of the sash-frame.
u. The inside bead.
a. The pulley-style.
K. The parting bead.
L. Outside lining.
m. Back c c c. The front-shutter hung to the inside lining of the sash-frame, o, by means of the hinge a.
D n. Back flap or shutter hung to the front shutter by means of the hinge b.
E E E. Another back flap hung to D D D, by means of the hinge c.
As in a window, the whole of the light should be shut out, the principle of setting out the shutters is, that each boxing should contain as many shutters as will cover one half; the horizontal breadth of which is from the axis of the hinges to the central vertical line of the windows.
o P vi a. Plan of the lower sash.
o. Eebate of the glass.
P. A square.
Q. An astragal moulding a. A small square or fillet.
Figure 76, the method of hinging two back flaps together, showing the manner of placing the hinge, when room is scanty in the boxings.
Elevation and plan of half a window, adapted, when the wall of the building is not sufficiently thick to admit of room for boxing.
Figure 77, elevation of half the window.
Figure 7S, plan of the window to double the size of the elevation, in order that the parts may be more distinctly seen.
E L. The breadth of the shutter, which is to a hang ing style a, and the hanging style o is hung to the sash-frame by the hinge at h.
The whole breadth of the shutter E L, together with the breadth of the hanging style at a, that is, i h, ought to cover exactly half' the breadth of the window ; viz., from the axis of the hinge at h, to the central vertical line of the window.
n. Architrave.
Back-ground.
K. Back lining.
The panel A u c Figure 77, represents the shutter, of which E F, Figure 7S, is the breadth. The hanging style and shutter are hung together by means of a rule joint, as before described, under the article Iirco/No.