pin wheel escapement

[remo87]

Another riddle...

 

[VinSer]

Amazing

You keep like this and you will need to publish a book, open a museum or both

The escapement is a pin wheel lever escapement; the lift is on the pallets. Its use is diffused in clocks, much less in watches

Le Roy used it (Chapiro, figure 597); Antiquorum sold in 1991 an example from Pichon (see here). Then there are some examples from Switzerland.

According to Brüggemann, the version of Pichon has 14 pins on the pin wheel, the Swiss one 15 (sorry I cannot count them from the photo).

According to Chamberlain (page 73), there were two difficulties with this escapement that caused it being "rare": "getting the pins exactly in place and the failure of oil to remain on the pins".

Ciao

 

[Bernhard J.]

According to Brüggemann, the version of Pichon has 14 pins on the pin wheel, the Swiss one 15 (sorry I cannot count them from the photo).

Hi, I believe to see 14 pins (the pins seem to be opposite to each other on the wheel > even number of pins).

 

[remo87]

Hi, I believe to see 14 pins (the pins seem to be opposite to each other on the wheel > even number of pins).

Yes Sir, the wheel has 14 pins, what it can mean? Isn't it Swiss made?

 

[Bernhard J.]

I would not take that alone as a clear indicator, there are no "golden rules" without exceptions in horology

 

[VinSer]

I would not take that alone as a clear indicator, there are no "golden rules" without exceptions in horology

Indeed, it only indicates that it does not follow the other Swiss watches known

So it is even more rare ...

Ciao