EDD
348
EDD
“ Figure 9. The plan of the cap of the main column, beingin Hate II. No. 2, the 46th Coarse, and composes the balconyfloor.
“hh. The man-hole in the centre, correspondent to theother floors.
“ t. The funnel hole accordant with z in the last figure.
« The dotted lines k k trace out the octagon base of thelantern.
“ The place of the under rail of the balcony is shown bythe dotted lines mmm ; and nnn denote sections of thestuds upon which those rails are supported, correspondent tothe uprights of Plate II.
“Plate V.— Original ideas, hints, and sketches, fromwhence the general form of the present budding was taken.
“ Figure 1. The bole of a spreading oak ; its side-branchesbeing lopped off, rising out of the ground with a sweep ; itstaper diminishing till the sides become perpendicular; and onthe insertion of the great boughs, again swells and overhangs.
“ Figure 2. The manner in which the smaller boughs andbranches are obliquely inserted into the greater, with thereconciling curves that form the union.
“ Figure 3. A specimen of paving to be found in thewalking paths of London streets; being a mode of dovetailingin stone.
“ Figure 4. A sample of stone dovetailing in the upright,taken from Belidor ’s Archit. Hydraul.
“ Figure 5. A copy of the first complete design made outfor the solid courses of the Eddystone. The only materialalteration afterwards was to diminish the size and weight ofthe outward circle of stones.
“ Plate YI .—A view of the rock on the east side; and ofthe work advanced to Course XV. the first of the entry-courses;showing the manner of landing and hoisting the stones, S;c. inevery after-stage of the building.
“ Figure 1. The boat Weston in the gut, delivering hercargo.
“ p Q. The two fender piles, to prevent her rubbingagainst the rock.
“ x. The cave, here seen in front.
“ d. The gulley, through which a momentary cascademakes its way; and which was proposed to be stopped.
“efg. The shears; from the head of which are suspen-ded the main tackle-blocks A b, whose tackle - fall, aftergoing to the snatch-block E, passes to the windlass, or jack-roll, whose frame being of iron, is fastened to the rock as perfigure.
“ The enlarged detached figure a shows the frame and rollfrontwise, as seen from the snatch-block.
“ b. The side-view thereof, the roll being seen endwise.
“ c. The manner of coupling the back-stay to the uprightstancheons ; and d shows, by a figure still more enlarged, theupper end of the stancheons for receiving the gudgeons ofthe roll.
While the stone is hoisting, the man represented at i isheaving-in the tackle-fall of the runner and tackle H k: for,till the stones are cleared of the boat, the shears lay out con-siderably, and the out-hawler guy-rope, L m, is slack. Thiscrosses the gut, and is fixed by a ring-bolt to one of the rocksof the south reef. By such time, therefore, as the stone ishoisted by the main tackle to the height of the entry-door,the shears are got into the perpendicular ; and then byeasing the out-hawler guy-tackle, l n, the stone comes intothe entry-door.
“ The runner and tackle H K is hooked to the guy-chain,o, which crosses the work, and passes down to the ring onthe west side of the rock ; marked r in Plate I.
“ In the detached Figure 2, the anchor-like piece of iron,
by which the main tackle-blocks are hung, i s s eQ ( jed U P°*enlarged scale at ef gh. This anchor being sU3 P » fye W ga round bolt at e, that passes through the tops pud'®®shear legs, swings freely between them, and al /itself in a perpendicular position, and producing 1 ^\esth eupon them,without any unnatural strain or twist,to support the greatest weight possible. ^ *
“ In like manner the two arms of the anchor, 9 ^the two guy-tackles hooked to them, the ac itackles is upon the suspending bolt, and the !nck.°tbey ar ® h atturning freely upon eye-bolts fixed in the rocs, . g0 tt>liberty to conform themselves to the position wanthe stress upon the legs is always endwise. . sb° y“After the building was raised to the ® \ 0 \ e , t^* ^Figure 1, the work was hoisted through the we tJ .j aD glearrived at the top of the solid, by means of the . an <itwelve - fold blocks wherewith the work was g 0 or ^shown as standing upon the wall at the first vaU . f that *♦he letters iklm, being the fourth stage: hut a j ie ;ght ^impleted (the man-hole being too small, and gta hlisbe^> ^ 8great, without losing time) a jack-roll was e ^ &nshown at the third stage in the lower store-roo at, ^
pair of movable shears, the figure whereof * 3 8 f . wh' c 'fifth stage, as upon the wall, at the kitchen-^ t he
lW
instead of^uv. '
whose bottom or a i^ ac ^ bi 8’ longer l “"-
mternal angle of thp CU(: Wj ‘h a notch, stepped upon ^suffer them to l ean ® PP °!! te wall; and was long enough
the wall. The shears r Uffi , Cien ^ f - tbe stone a£ P
over by a luff- tacj£ | ‘ ^mselves were prevented fromb] ock booked upon » h°wn u P on ‘he back leg, whose ioi
upon; by which it V s ’ ln tbat stone the backstone was to be landed fought tight and steady. When ^‘he notch could be df«’ tb,S tac kle being a little slacke , j,le 8 would, by £oin« n eDga P d ’ and ‘hen set upon, tbe b 0 eto the perpendicular ^i. tie wall, suffer the shears to
“ The stones nHr r ? bt * ond ^
noon tackle was cm r,i ec , ome ,n general less weighty, a , „ 0
down to the entrv I yed at ‘^shear-head, whichthe great shears /thTt’ t? 1 , there met tbe stones b °f te^
taken to the jack-roll tac hle-fali of the movable shears, ^building j D the an tbe stones were got to the top’ 0 ,0
‘''o entry-d 0 or. ^ tlme th V were raked from the
where the check^nr^f R 18 tbe plan of the movable s H*jiehack leg. ’ Safety rope, n, is shown at the fo°
movable sheerer.? aU the heav y materials were got “P’Jtohe set upon the witb ‘he work, till the cupoU **a jij ^ intern. .g.
The great shears fl- Sh ° WS tbe a PP arat us used for this P^ndput through the novv done with, were taken d re ,
being welt steniV l nd °ws of the uppermost room, on r68 beirig Z Zin'i’ 3e . rved 38 booms. The detached Usition ; wherein n ^ ,S sta o e > shows their particula 0 (the shears used r S i .°, vv the places or feet of the _^ e dw ’th the same I f.° r t iIS P ar ticular purpose; abs0 th ; s , th erope or Z h ‘he relative upright , lu % ^
stay of the lew ^ slde- sta y to the leg o r; and s 0 f tb ebooms. 8pt ’ ea °h fastened to q s, the extremes a ^
shear-poles ^roe t!ie cross-tree at the hpaci
one guy-rope at ^ r0pes wx ’ y X ’temporary timh^r’ proceeda over a pulley in ea , a .
°f a tackle j o ^ Z: Proni thence, with tbe inter
end of the hai’^i “ P roceed s to, and fixes at the*cipally lay „ n . and 38 the weight to be hoiste 4, > sy a 7 upon this guy, the stay, or shroud rope.- &
he»°
wh'f’end ° Lethe e^ish .