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Left-upper LEVER with O-SHAPE activate Chime for Test/Synchronization
Mark X on Cylinder = "Ready for 1st-Quarter-Chime"



BW = Bell Winding     CW = Clock Winding     GW = Glockenspiel Winding
QCC = Quarter Chime Control     HAC = Hammer Action Cylinder
C1 & C2 = Bell Count Gears

CHIMES:   A = Whittington ;   B = St.Michael ;   C = Westminster

Details  of  the  CIRCULAR (~ 1 sec) PENDULUM  &  ESCAPEMENT  below ...
( +/- ADJ.  <=>  Pair of MINI-WEIGHTS moved (+) closer to [ or (-) away from ] the center )


original   ...   modified
R E M A R K S :
==================================================================
This "TREASURE" was found in an AntiqueShop "AS IS" - NOT WORKING!
Someone had tried a repair - BUT made it worse:  Wrong bent parts,
wrong assembled gears, wrong placed hands - OhOh ! - DAYS of work:
1st) UNDERSTANDING its design + 2nd) RESTORE its original setting.
Because of its "wear + tear", the inner FRICTIONS became relevant!

»NANO-OIL« application  and POLISHING all "Glider-Surfaces" of the
"Programming-Gears / Sensor-Guides",  there was an improvement ...
AN   E X P E R I M E N T :  The CIRCULAR (Aluminum) PENDULUM NEEDS
MORE MASS ???  Added 2 x 2 = 4 NAILS ... This INERTIA overcome the
"Stopping-Points" -  WOW - That was it !!!
L A S T  S T E P :   The RIGHT WEIGHT was a WASHER ...  
Fine-Tuning with the Mini-Weight-Pair: 60 SWINGS in ~ 48.5 SECONDS

Remarks  to  S Y N C H R O N I Z A T I O N ...
------------------------------------------------------------------
Pictures show state of the clock at 3:13 => prepared for 1/4 Chime
------------------------------------------------------------------
 o  "X"-Mark on HAC should be seen, when QCC is in shown position
 o  QCC controls the Quarter-Chiming:
    - Shown position: After Bell-Count, before ...
    - 1st-Quarter-Chime (= next, turns clockwise) is shortest ...
    - 2nd-Quarter is longer ...
    - 3rd-Quarter is longer ...
    - 4th-Quarter longest with "NOSE" to trigger the BELL-COUNT
 o  C1 ( connected with the SMALL HAND ) ...
 o  BEHIND C1 (not visible in picture) is a "4-Prong-Star-Wheel"
    - Its SQUARE-AXLE holds the BIG HAND in Position ...
    - EACH PRONG lift the "Chime-Preparation-Lever" ...
    - The ONE LONGER PRONG activates the "Bell-Preparation" too

R E M A R K :  Neither Chiming nor Bell-Count are triggert direct
      from clock-work. There is a "PREPARATION-STATE" involved in
      order to transfer the forces !!!

 o  Set the BIG HAND so on its SQUARE-AXLE, when, at FULL HOUR ...
    - the BELL-COUNT is triggert ...
    - the SENSOR-PIN fall on the C1-EDGE ...
    - and adjust C1 so, that it fall in the middle of the edge
      ( May be C1 needs to be lifted and reset 1 tooth beside ?)
 o  Loose & fix the SMALL HAND to the appropriate C1-HOUR
      ( Top=1; Low=12; STATUS = 13 minutes after 3 Bells done )

==================================================================
REMARK:  Changing CLOCK-MOUNTING for a user-friendlier Maintenance
==================================================================

When removing HANDS & FACE ...
There is another OBSTACLE: A
BLACK PLATE covers the Front-
Mechanics !!!

Removing this plate, let the
clock in an unoperable status!

When mounting the 4 screws
( former holding the plate )
in REVERSE DIRECTION WITH THE
CLOCK-BODY on the 2 vertical
studs, than the clock is in
working condition and both
sides are accessible!

Now CONNECT FACE & BLACK PLATE
(as original) with its 4 Mini-
Screws & 4 Distance-Rings as a
S I N G L E  UNIT. It can be
placed with its 4 OPEN HOLES
on the REVERSED SCREW-WINDINGS
and than hold in place by 4
BIG PAPERCLIPS on the 2 STUDS
...
  
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© C.HAMANN      http://public.BHT-Berlin.de/hamann        12/27/17