Framing for Windows

Jambs of frame have a groove cut in the re bate as shown at A. This groove catches any water which may beat in between sash and jamb, and conveys it downward, as indicated by the dotted lines, and discharges it on the sill as in dicated by the arrow.

At the top of the figure is a vertical section taken through the head of the window. The cant strip shown is required over the head to give the first course of shingles the proper tilt The trim is of 1% by 5-inch moulded and hol low-backed material, mitered at angles, put to gether with slip tongues, and glued. A small wall mould follows about all trim.

The middle part of the figure to the left is a horizontal section taken through the jamb of the window, and shows the trim and inside stop bead finishing on a moulded stool.

Below is a vertical section taken through the sill, which shows the joint of stool with sill put together with a slip tongue and glued. The sill has an undercut into which the shingles are fitted.

B

is a horizontal section through the meeting stiles of casements in two leaves. This makes a tight joint, but requires that both leaves be opened and closed together. The crescent shaped space between the two stiles is required for the play of the sashes when thrown forward, owing to the hinges turning on a center outside the sashes.

C is a vertical section taken through the transom bar. The projecting portion is pitched to throw off water, and the under side is grooved to form a drip. The upper or transom sash is stationary, and joints are put together with white lead. The inside of the transom bar is moulded to correspond and miter with a portion of the trim.

Inward-Opening Casements. Fig. 26 shows the construction of inward-opening casements in frame walls. The construction is very good for the reason that all precautions are taken to make the window proof against rain and wind.

The sash and frame are rebated at the jambs and sill, and a small mould is tongued into the jambs and head outside of the sash in the man ner shown. This mould is undercut so as to form a channel to catch any water which may beat in at the edges of the sash. This water

discharges on the sill.

The bottom rail of the sash has a moulded drip let into it, so as to shed any water which may trickle down the outside surface of the sash. The under side of the bottom rail of the sash has an undercut; and directly under it, in the sill, a channel is cut. This channel catches any water which may beat in between the sash and the sill during driving rainstorms, and is discharged on the sill through perforations in the raised lip of the sill, as at X. These perfora tions consist of holes bored and reamed smooth. Three are usually provided for a window of ordi nary width.

The frame and sash are constructed and set so as to form a reveal on the inside of the win dow; and when this is required, care should be exercised to allow ample space for window shades between the inside surface of the sash, when open, and the jamb lining. To secure this Fig. 26. Framing for Inward-Opening Casements.

space, it is usually necessary to thicken the jamb of the frame and provide the filling piece A.

Shades for inward-opening casements are usually placed cn the sashes, and the filling piece should be of a slightly greater width than the thickness of the shade when rolled up. The shade can, of course, be placed on the jamb of the window above the sashes; but this necessi tates rolling the shade up entirely whenever the windows are to be opened.

Storm sash, blinds, or insect screens may be hung on the outside casing of the window; but, if required, the sill should be rebated for them. The outside casing is moulded, and mitered at angles, and at the head is flashed with tin, copper, or other suitable sheet metal carried up about six inches behind the shingles. The sill is grooved on the side for the shingles, and on the inner edge for the inside stool.

The wall is constructed in the usual man ner of studs, sheathed, papered, and shingled on the exterior, and lathed and plastered on the interior. Grounds (G) are set wherever neces sary for a nailing for the trim, base, wainscot, and other interior finishing woodwork.