Re: Chime sync for a Seth Thomas mantel clock, model 119.

dAz wrote:
On 27/01/12 08:19, David Farber wrote:
We recently had our Seth Thomas 119 mantel clock serviced. It was
inherited from a family member. The clock wouldn't run. After
servicing, the time now works properly and so do the chimes, sort of.

In the evening we turn off the chimes via the lever on the side of
the clock. The lever has two positions, "C," and "S." We figured out
that "S" stands for silent mode and it does indeed quiet the chimes
when the lever is moved to that position. However, when we move the
lever back up to the "C" position the next morning, the results are
unpredictable. Before I go into the sometimes crazy things that
happen when the chimes are re-enabled, I'd like to know, when the
lever is in the silent position, is the chiming mechanism supposed
to continue operating except for the fact that the hammers are
blocked from hitting the pipes? What is happening is that after the
lever is put back to the "C" position, it's as if the chime
synchronization picks up where it left off the evening before. If
you turn it off at 10:20, then turn it back on at 8:00 in the
morning, the next hourly chime will be the 11:00 chime. Also, this
clock has a quarter hour chime as well. Sometimes when the lever is
moved back to the "C" position, the quarter hour will immediately
chime whether or not it's in one of the quarter hour positions of
:00, :15, :30, :45. And then sometimes in addition to the immediate
quarter hour chiming after it's reactivated, it really gets crazy
when the hourly chime sounds at the same time the quarter hour chime
sounds. It's quite dissonant. At the end of all this tone wrangling,
you then can sync the quarter hour and hour chimes with the two trip
levers located in the mechanism. Then it's all good until the next
morning. Again, this only happens after moving the lever from "S" to
"C". So back to my original question, should the chime mechanism be
totally disabled during the silent hours? Or should the mechanism
still be cycling, keeping sync with the time, but only disabling the
hammering of the pipes?

something similar to this
http://ticktocktony.com/Antique-Clock-Products/Other/599.php


different companies have different systems, mostly when you shut the
chime/strike off it just blocks the chime and strike trains, so yes it
will just continue from where it left off, normally take about an hour
to reset itself, however what you have is an american 2 train movement
which is normally a locking plate strike, unlike a rack strike,
locking plate strike is not self correcting and has to be manually
reset, in addition unlike a more modern 3 train 4/4chime and rack
strike your clock has an added separate chime movement which also has to
be
manually reset after stopping or allowed to run down.

http://ticktocktony.com/Antique-Clock-Images/Other-Antique-Clock/599/599movement.jpg

so yes, each and every time you shut the chime and strike off, you
have to manually reset it

personally I would not bother to shut the chimes off, learn to live
with it


Also, can someone tell me what the three windup springs are for?
Someone penciled in "clock" over one of the openings. So does that
leave the other two springs to independently power the hourly and
quarterly chimes?

well the clock has 3 functions with 3 trains and 3 mainspring, the
hole near the 8 is the strike, near the 4 is the time and the hole at
the 3 is the chime, you probably have another small keyhole right under
the
hands, that's for regulation

Finally, is it ok to move the minute hand backward?

no.


Thanks for your reply.

Hi,

The picture of the mechanism you showed differs slightly from my clock.
Perhaps it's just the chimes themselves. They have a much deeper tone than
the one demonstrated on the ticktocktony website. Here's what I have:
http://webpages.charter.net/mrfixiter/images/Mantel_Clock/Back-view-mantel.jpg

Thanks for the detailed explanation of the mechanism. Given the fact that we
can agree the clock is a p.i.t.a. to sync, does the intermittent,
simultaneous hourly and quarterly chiming when the chimes are reactivated
indicate some sort of impending failure?
--

David Farber
Los Osos, CA


.

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