To form the edges or joint of door-styles, to be bung to each other, so that the door ?nay open to a right angle, and show a bead to correspond exactly to the knuckle of the hinge. Also the manner of constructing the hinges for the various forms of joints, so as to be let in equally upon each side.
Figure 8, No. 1, shows the edge of a style, or it may in some cases-be a jamb, on which a bead is constructed exactly to the size of the knuckle of the hinge, and rebated backwards, equal to half the thickness of the bead : the manner of con structing the rebate will be shown as fidlows : Through c, the centre of the bead, which must also be the centre of the huge, draw C if D peripendicular to E F; draw A parallel to it, touching the bead at o ; make GA equal to c C, the Minns; of the bead ; C A; make A a perpendicular to A C, cutting c D at a ; then %ill a A B n be the joint required.
No. 2, shows a part of the hanging style constructed so as to receive the edge of No. I.
No. 3, shows the above hinged together with common butt hinges.
must be observed in this, and all the following examples of hinges, that the joints are not made to lit exactly close, as sufficient space for the paint must be allowed.
Figure 9, No. 1 and 2. The manner of constructing these. being only a plain joint at right angles to the thee of the style, no tiirther description is necessary.
No. 3 shows No. 1 and 2 hinged together, and the par ticular construction of the hinge, so as to be seen as a part of the head, and the strap of the hinge to be let equally into each style : this construction will admit of a bead of the same size exactly opposite to it.
Figure 10, No. 1 and 2. The manner of constructing the edges of styles to be hinged together with common butts, to be let equally into each style : the manner of constructing this joint is so plain, by the figure, that it would he useless to give any other description of it. No. 3, the two pieces hinged together.
_Methods of jointing styles together so as to prevent seeing through the joints, each side of the styles to finish with beads of the same size, exactly opposite to each other, and for the strap of the hinges to be let equally into both parts or styles.
Figure 1 No. 1 and 2, the manner of constructing the joint before hinged together.
No. 3 shows No. 1 and 2 hinged together with common butts.
Figure 12, No. 1 and 2, shows another method of construct ing the joints, betiwe hinged together.
No. 3, shows No. 1 and 2 hinged, and tip particular form of the hinges for the joint.
The principle of concealing hinges, showing the manner of making them, and of forminq the joint of the hanging style, with the other style connected to it by the hinges, either for doors or windows.
Figure 13, for a window : x, inside bead of the sash-frame.
Y, inside lining.
z, style of the shutter.
Let A be the intersection of the face of the shutter, or door, with that of the inside lining of the sash-frame.
A It, the thee of the inside lining.
Bisect the angle e A R by the right line A now the centre c being determined in A A at c, so that the knuckle of the hinge may be at a given distance from the twee P A of the shutter ; through c draw the line D D, at right angles to AA ; then one side of the hinge must come to the line c D, the hinge being made as is shown by the figure.
To construct the jamb to be clear of the shutter.— On c, as a centre, with a radius c A, describe an arc A NI, and it will be the joint required.
1\i4e.—When these sort of hinges are used in shutters, the strap of the hinge may be made longer on the inside lining, than that which is connected with the shutter.
Figure 14, is the manner of hanging a door on the same principle : the shadowed part must be cut out, so that the other strap of the hinge may revolve ; the edge, c D, of the hinge, will come into the position of the line A A, when the window is shut in.
Here the strap part of the hinge may be of equal lengths.
Figure 15, the common method of hanging shutters together, the hinge being let the whole of its thickness into the shutter, and not into the sash-frame.
By this mode it is not so firmly hung, as when half is let into the shutter and half into the sash frame, but the lining may be of thinner stuff: is proper to notice, that the centre of the hinge must he in the same plane with the face of the shutter, or beyond it, but not within the thickness.
Figure 16, the method of hanging a door with centres. Let A D be the thickness of the door and bisect it in B ; draw 11 C perpendicular to A ; make nc equal to DA or an; on e (the centre of the hinge) with a radius c A or c n, describe an arc, A E n, which will give the true joint for the edge of the door to revolve in.
HIP, in architecture, a piece of timber placed between every two adjacent inclined sides of a hip-roof, for the pur pose of fixing the jack rafters. For the manner of finding the length and hacking of the hips, see HIP-1100F.