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A Royal
'HAAGSE KLOK'
by: Keith Piggott. |
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 APPENDIX
1
Back to Main Document. |
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Dimensions
and Construction
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The classic ebony veneered
box case.
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Measurements in mms.
including veneers |
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ř
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denotes original part. |
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® |
denotes replacement
part. |
Box:
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Internal H.254 W.210 D.76
External H.207 W.162 D’.70
Overall D 92,5 (incl. door) |
| Door |
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Frame: H.257.5 W.212 D.16.5
Reveal: H.207 W.162
Stiles: W. 25 Th. 16.5 |
| Ends & Sides |
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25 thick |
| Backboard |
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6 thick (Solid Show-wood) |
Carcass
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Solid Show wood: Kingwood, Dalgeria Cearencis
(provisional)
Poss. alternate: Cocobolo -Dalbergia Retusa. |
| Veneers |
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Ebony (Genus not identified.) |
| Sound
Holes |
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Diams: 35 (side), 41
(underside) |
| Susspension(missing) |
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2 piece Capstan & Ring, or Single Eyelets? |
| Crest? |
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Pegged through the top for later Crest or
Pediment? |
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Dial. |
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measurements in mms.
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Dialplate
4 round feet |
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212 x 165 Brass
ř. Av.
2.2 thick, clad in uncut velvet |
| Chapter
Ring |
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Diam. 143 x 103, Th.
1.18 |
| Anulus |
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20 1.18 thick, 4 studs. |
| Hour hand |
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51 Gilt Brass
ř. |
| Minute hand |
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70.5 Gilt Brass . Tip
has a steel pointer |
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Dial
Apertures |
| Pendulum
access |
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18 x 40 , covered by the
signature cartouche |
| Sector cut
out |
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20.5 x 12 |
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Folding
Pendulum Holdfast |
| Holdfast spring |
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L.31.5 W.15 >0.6 Th. 0.13 |
| Holdfast folding lever |
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Brass L. 56 W. 13.5 |
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Movement. |
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measurements in mms.
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Movement
plates |
| Backplate |
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(pinned) 115 x 94
Thickness 2.33 >2.15 |
| Frontplate |
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115 x 94 Thickness 2.22
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Pillars |
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4 Octagonal, L. 38, Th. 8.05>7.85 |
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Split-Barrel:
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Splitt Barrel
Rear going
Front strike |
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Diameter 43, Length 25.
D. 49.4 t. 72
D. 49.95 t. 80 |
| Arbor |
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Length 55.56 Square 3.6
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Ratchet
boss+cam |
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D.34.4, 21 teeth, thickness 1.85
D,11, Thickness 4.85 |
Stop
Concealed |
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D.10.3 8/6 cut spring Thickness 1.25 |
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Going Train. |
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measurements in mms.
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| Train |
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| 72 |
First
wheel |
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6 |
70 |
Centre
wheel |
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5 |
60 |
Contrate wheel |
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5 |
27 |
Escape wheel |
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| Pendulum |
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Beats 151,2 p/m
Nominal length 15,8 (6.1”) |
| First wheel |
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Sited at Backplate.
Diam. 49,4 |
| Centre
Arbor |
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Length 59.4, Diam. 3.95
Tapered, Relief 2.15 . |
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Centre-wheel |
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Diam.39,4 Pinion diam.
4,82, pinion 4.7 long |
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Contrate-wheel |
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Diam. 37,3 pinion diam.
3,5
Collet replaced. |
| Escape wheel |
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® diam, 28,7 Pinion diam. 3,7 |
| Remarks |
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Oosterwijck’s original
train, except escape wheel teeth being re-cut”. Extant Pendulum: 16.45 cm ( 6.5”) Centre of
Bob to Cheeks (151.2 beats/minute) |
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Motion
work. |
| Train |
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| 32 |
Minute
wheel |
| 32 |
6 |
Reverse minute wheel |
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72 |
Hour wheel |
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Minute-wheel |
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Single pin (Hour
strike)
diam. 41.5 |
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Reverse-Minute |
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33.0 diameter. |
| Hour-wheel |
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radial marking, 43.2
diameter. |
| Cannon |
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Now punch-dimpled,
transverse pin secures hour hand. |
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Strike Train. |
| Train |
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80 |
First
wheel |
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10 |
8 |
60 |
Pin
wheel |
| Drive whl. |
78 |
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6 |
48 |
Warning wheel |
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6 |
48 |
Interm. whl. |
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5 |
Fly |
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First-wheel |
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Diam. 49.4 Sited at
Frontplate |
| Pin-wheel |
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Diam. 40.6, 10 steel
pins Pinion diam. 5.25 |
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Warning-wheel |
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Diam. 32.5 . Pinion
diam. 4.9. 2 brass pins, dome-collet. Warning-pin resited by 18 on same
radius (accident) |
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Intermediate-wheel |
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Diam. 28.8 . Pinion
diam. 4.7 |
| Fly |
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Pinion diam. 3.6 2
vanes.
Lozenge section 22 x 25 long. |
| Strike
Lever |
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R? Restorer
inscription infers lever “added, adjusted, repaired” |
| Strike
Gates |
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Steel scrolls, 2 below,
1 longer above |
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Count-wheel |
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(locking plate)
ř
12
unequal detent slots, I to XII, 78 strikes p/hr.
Diameter 72 |
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Drive-wheel |
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78 teeth, Diam. 50
Pinion 10 on Pinwheel arbor. |
| Hammer
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Brass head with steel
striker, dove tailled to a steel stem,its pivot scroll is tensioned by
thick brass “L” stop spring. |
| Bell |
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On Dial. Diam. 70.8
Height 29 2.7 thick. |
| Bellstand |
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Base 12.55 x 9.98
tapering to 6.4 x 6.2 2 Rivets. Height 31 + 5.5 Five turn screw,
Diam.3.5 |
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Copyright:
R.K.Piggott,
February 20, 2009. |
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