I have now received copies of many original Telavox papers which will allow me to share more in-depth information on these fascinating clocks. My grateful thanks go to Jens Ingvordsen (Århus Museum Curator) and Niels Petersen (Clockmaker and Foreman of The Danish Horological Society) who kindly provided these copies of their original material on Telavox including the many patents.
Below is an original, numbered illustration of the standard Telavox striking movement. (on hammer and gongs) I have scanned the original but the blog format limits the maximise physical size on the computer screen: The enlargement of this image (left click as usual) is 345kB. So those on a slow internet connection may not want to use the enlargement facility. SFor this reason I have also provided larger images just below to save enlarging the originals. Those who choose to enlarge should back click to return to the text.
TELAVOX STRIKING MOVEMENT:
[set forfra] seen from the front (invisible) side of the Telavox movement.
Mostly (but not all) parts normally hidden by the clock dial.
1 Rate adjustment screw
2 Suspension spring/strip (for torsion pendulum)
3 Balance (torsion)
4 Rack hook
5 Escapement (anchor depth adjustment)
6 Rack (strike)
7 Spring (strike release)
8 Strike release snail
9 Strike release pin
10 Rack stop post
11 Snail (strike count)
[set bagfra] seen from the rear side of the Telavox movement:
Visible through open case door or upon removal of clock case back plate.
12 Strike release arm
13 Motor start arm
14 Control arm for contact spring 18
15 Control arm for contact spring 17
16 Return spring for 12,13,14 & 15.
17 Contact spring
18 Contact spring
19 Lifting arm for rack hook
20 Screw for adjusting beat (?)
21 Motor starting spring
23 Motor adjustment screw
24 Motor starting ratchet wheel
25 Cams to lift hammers
26 Left hammer arm
27 Strike release snail
28 Lifting wire for hammers
29 Hammer arm
30 Damping device for hammers (to avoid bounce)
Hopefully my rough translations of the manufacturer’s original part names will not offend the expert horologists reading this. (if any) This list may be “re-polished” in future iterations in the light of new knowledge. The Danish names are often unlike standard English clock terms and some parts have no obvious counterpart in mechanical or weight driven clockwork anyway. Just don’t kill the messenger. The horological term wheel is normally used instead of gear or gearwheel or toothed wheel. A pinion is just a smaller gear having fewer teeth than a wheel.