ThomasM[PuristS]
14331
The AP in the original post in this thread...
Oct 16, 2007,02:14 AM
is a first generation PGS quarter repeater; it has since been replaced by a PGS Minute Repeater Carillon, but I don't like the new dials (too much text on the dial) The reference number should be available in the AP reference page under Jules Audemars; if not, drop me a post in the AP forum and I'll look it up in the manual or other reference sources.
The photo in the immediately preceding post, showing the movement behind a hunter back, is not an AP.
The IWC is a modular design (the AP and Dufour, as well as the Daniel Roth, I believe, are integrated) and have the hammers/striking works under the module. If I recall correctly (my memory has been very bad recently) the hammers are visible in the skeletonized version of the IWC. Is it important to be able to see the striking works in action? Depends on the individual; even display backs on very high end timepieces are a recent development; for most of the 20th century, display backs were very much the exception, not the norm.
Cheers,
TM
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Minute Repeaters
By: mobeme : October 13th, 2007-02:12
Can someone pls tell me the difference between a Minute Repeater and a Grande Sonnerie? Is it that a GS automatically chimes every quarter? Many thanks G.
A repeater (minute/quarter/5 minute/etc) must be activated
By: ThomasM : October 13th, 2007-02:47
for every "strike" session. It also has it's "power" charged with every activation, so it does not need its own separate "power train." Thus, when a slide is slid, or plunger pushed, it "charges" the repeater spring and the time is "chimed" out. Typically...
Thanks for the very clear overview ...
By: AndrewD : October 13th, 2007-04:09
Dear Thomas, So does that mean that the Sonnerie en Passant must have at least 2 barrels, one for the escapement and one for the sonnerie? Do they ever have more? It probably varies dramatically between watches and whether they are in the Grand or Petit m...
Yes, Sonnerie en passant requires two barrels. exactly as you noted.
By: ThomasM : October 13th, 2007-12:58
Hi, Andrew, The two lower barrels are wound by the gear in the center (three gears at the top in the picture) - the crown winds bi-directionally, one way for the timekeeping, the other for the sonnerie. I have heard of some attempts to run the sonnerie of...
FP Journe's Sonnerie has only one barrel...
By: JGV : October 14th, 2007-06:27
Hi Thomas, I'm almost afraid to correct you on this topic, but the FP Journe Sonnerie uses one barrel only. Luckily I have a purists article to back me up http://www.thepurists.net/Patrons/members/ian_s/journesonsouv/sonsouv2.htm Regards, Joram
Thomas...
By: mobeme : October 14th, 2007-16:32
Thomas, may I ask two more things : - what reference is the AP you have in the picture you posted? It's absolutely superlative. Discontinued I presume? - I read somewhere that the IWC Porto MRs don't have the hammers exposed on the back of the movement. D...
GS's
By: mobeme : October 13th, 2007-09:30
Thomas Many thanks indeed for your great explanation - very helpful. From this I infer that Sonneries are signficantly more more complicated/expensive than Repeaters. Who are the main producers of GSs? I know of AP and FPJ. If I'm not mistaken PP only mak...
Sonneries are an order of magnitude more complex than simple repeaters.
By: ThomasM : October 13th, 2007-13:03
Hi, G, Keeping in mind that expense and complication are not necessarily tied to each other (why would a Simplicity time only be more expensive than most perpetuals? Why would a 3970 chronograph perpetual be more expensive than some mint sonneries?) but y...
GS's
By: mobeme : October 13th, 2007-15:02
