J 0 I

67

JO I

(jjUill'hpfJ

on t °9 ee > raised panel, with ovolo on the rising, grooved'Work P ane ^ on hack. Bead and flush, and bead and butUj ou l ( j. ai ' e always used where strength is required. Theot i. ln S s on the inside are made to correspond with thep\ Parage or hall doors.

0tl botl^'^’ * S a co ^ ect l on or ser 'es of mouldings, the same*ach .\ sides > an( l project in part without the framing onframed „ The mouldin S 8 are laid in after the door issides 6 f s 1 uare and put together. If bradded through the°bser° ^ l6 < i u ' r ^ s ’ t i* e heads will be entirely cancealed ; buttoward’ v' lat l * le P 08 ' 1 ’ 011 oP the brads must not be directedntoni,]- 3 t i<! P ane ls> but into the solid of the framing. Then)oulJ n ^ S °* dools which thus project are termed belectionsur,o. - ln 9 s! belection-moulded work is chiefly employed in

Uperi or buildings.

, Geometrical Descriptions in Joinery,p- F° find the true bevel for hanging any door.

''ddthf* ^—Let a t ^ e centre °1' t l |e hinge ; on a b the°ther °,i ^ le door > describe a semicircle, b c e da, cutting the

Will be* h door c and ^ J°‘ u a ^ and ^ w bi°b

freely ta<i P ro P er edges of the door, in order to make it open

qu en °^'jj' r b'he bevelling on the side a J is of no other conse-

an to make the sides uniform.

p- find the joint for a pair offolding doors.

l OUre 4Q r -

bisect h —Let A and 9 be the centre of each hinge ;

the do 9 a perpendicular, a b, cutting the thickness of

•ttake e° r ° and ^ > bisect abby the perpendicular c d at e;’ nt end ^, an< ^ e ^ each equal to half the thickness that you9a c< if 16 re bate to be. Suppose you intended the flap,hing e •” to °pen, draw a line from d to the centre of theother sir! 9 ’ ° n 9 9 describe a semicircle, dfig, cutting thePnrall e i ; t ' le d° or at f; join f d, and through c draw c k

Oil

JVote ''it 9 ’ t ben h c df will be the proper joint.

en,.u . y° u Put a bead at the joint, it ought to be equallyof the points « and b. ,

°n a 9 . ln d the ^ eve l °n the edge of a door, when it is executed°n the Cll ar plan, and the door to turn towards the spacePlgy^ l ^ x s ide of the circle.

Squired*' ^—With regard to the circular door, all that isgreater tb 8 t0 ma ' ie the angle a be either a right angle orany j an a right angle (for a right angle

Ut| y d 0l

angle is the least that

a line'dr.,^*^ of) formed by the edge of the door, and

'from the centre of the hinge to the opposite

; , ,«W iua.fJ'fflSSi-' ‘C

; 4 ’ and bisect it by the perpendicular cfe, cu ‘ t ' 1 ' s ^'®, ‘ f h' and r nd e ’ bisect c e by the perpendicular, g f > ' • j n

I h n ,y 9 each equal to half the thickness of the rebate- J■ 4S { an b describe the semicircle h i k 6 cutt.ng the concav ethe door, is join ih; through g draw g l patallel to> then will Ighi be the joint required. •

find the meeting joint of folding doors when the kingi p. ace d on the concave side of the doors. . . t 0 ; n

' « b 9Ur fi 5 2—Let a and b be the centre of the '■ » ; -J

, ? 1 , 6 ’and bisect it by a perpendicular, c de, at c cuttmg tlm

I,r/A, tunitij. d e Mf; mola,/A ,m /> ,,

s „ . ^ tUickutjss of thf* vebutd « ioiu o it>

5";**. A i A 6, .,« 4 .« ..lii of tte *5» '»

i A “ '“S' « iI join i A, ,nd through 9 1

bo’.? 0 tl! ig the — - - - ' ‘

b® tb e i„Vn. l '“ e co ncave side of the door at l; then will i hy l

Denton, S °“S h t.

tl ° w tbe*! l fra f ton- '7‘-P |e l the door alghi remain in its place;^ ei 'Penqi 0u ? 8 e * * A being a right angle, consequently thear 6 i wh\ the shortest line that can be drawn

from the point b to the line ih; then suppose the half doorto he turned round the hinge at b ; the point i will thendescribe a circle, whose centre is the hinge at b ; then will i hbe a tangent to that circle at i; therefore the angle at iwill touch no other part of the edge of the other door, butat i.

If round the centre of the door which opens as Figure 53,you describe circles on each side of the rebate, and the edgesof each door be made circular, it is plain it will also open inthis case.

The plan of the doors here shown, are two or three timesthicker than those used in practice, in order to show theprinciple clearly.

Figure 54, a section of the jamb-post, jamb-linings,grounds, and architraves, with part of the plan of a door.

b b. Sections of the grounds, flush, or in the same planewith the plaster.

E, e. Outside and inside architraves.

g g g g. Line of the plinth.

C. Jamb-lining.

h. Hanging style.

i. Door style hung to the hanging style H, by means of thehinge m.

Figure 55, half of the plan ; showing the door foldedhack ; the parts in this having the saute references as thosein Figure 54.

Figure 56, meeting styles.

Figure 57, the moulding of the door, shown to a largersize.

This method is advisable where you have no opportunityof making the doors slide into the partition, as is shown inFigure 32 ; but whenever that opportunity offers, it shouldbe preferred, as no door can be seen when shut into the par-tition, which not only keeps them entirely out of the way, butmakes the most complete appearance.

Elevation of a pair of folding-doors, to be shut quite out ofthe way, in order to open a communication between two rooms,or to throw both into one on any occasion.

Figure 58, plan of half the door to a small size.

A. Plan of the outside style.

d, c. Plans of the hanging styles.

d. One of the meeting styles.

G G G, g g g. Framed partitions, distant from each other,in the clear, the thickness of the door.

K f f. The space or cavity for the door to work in, whichmust be made sufficiently wide to receive one half of the doorentirely within, or nearly so : doors of communication forgeneral uses may he constructed in this larger door, in whichcase the middle doors may be hung to the flaps, on the flanks,so that they will open like any other common folding-door ;this method, therefore, combines utility and convenience, andis a complete deception. The first leaf of the door must runin a groove at the top, to make it steady.

Figure 59, a section of the style next to the partition, to alarge size, with part of the plan of the bottom rail, showinga small part of eacli partition.

Note. In setting out work of this kind for practice, onehalf of the plan ought to he completely drawn out.

To find the joint of a jib-door, so that it shall open freelyat the hanging side, and the joint to be a plane surface.

Figure 60.—Let C, the centre of the hinge, be in thesame plane with the dado, and placed within the substanceof the lining, in order to give strength to the jamb,

C e. The thickness of the door at the joint, which producetill it cut the opposite side of the base moulding at a ; makea b equal to a c ; join b c, and from b draw b d perpendi-cular to b c ; then will b r> be the true line through which