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Seth Thomas D105 movement "Click" to Login or Register 
posted
I recently purchased a Seth Thomas carriage clock on eBay. It has the D105 movement in it. I have not completely torn down the movement, but I am trying to understand what the mechanism in back of the dial and in front plate of the movement is for.

 
Posts: 353 | Location: Nichols, New York in the USA | Registered: April 04, 2010
posted
The fan in the rear governs the strike. I am trying to understand what the fan in the front does.

 
Posts: 353 | Location: Nichols, New York in the USA | Registered: April 04, 2010
posted
Another view.

 
Posts: 353 | Location: Nichols, New York in the USA | Registered: April 04, 2010
Picture of Dave Turner
posted
Ken, I don't have a clue, but I did find reference to another D105 on that "other site". And found that some of the components are gold plated.


Dave Turner
 
Posts: 1975 | Location: Wilson, North Carolina in the USA | Registered: November 15, 2011
posted
Here is a photo of the clock. It is listed in Tran's Seth Thomas book third edition as Carriage No. 7. There is no evidence that anything is missing from the clock, so whatever the function of the extra train, it is integral to this movement.

 
Posts: 353 | Location: Nichols, New York in the USA | Registered: April 04, 2010
posted
Rear view. Height including handle is 9 inches.

 
Posts: 353 | Location: Nichols, New York in the USA | Registered: April 04, 2010
Picture of Dave Turner
posted
I've been studying this and coming up short. Can't find anything close to it. Nice clock though!


Dave Turner
 
Posts: 1975 | Location: Wilson, North Carolina in the USA | Registered: November 15, 2011
Picture of Dave Turner
posted
What is that pin sticking out toward the edge of the movement, just below the fly, and also the arbor down below with the arm extending into the movement?


Dave Turner


 
Posts: 1975 | Location: Wilson, North Carolina in the USA | Registered: November 15, 2011
posted
That pin is an arm that extends down the front and activates the train to move.
The arbor has a post on it similar to the post that counts the hour on a striking clock. It is hard to see just what it does, and I have not fully disassembled the movement.
 
Posts: 353 | Location: Nichols, New York in the USA | Registered: April 04, 2010
IHC Member 2030
posted
Very nice clock.
Not an expert, but would the face cutout be for day,date or month?
Happy gear meshing.
Mike
 
Posts: 1107 | Location: Virginia Beach, Virginia in the USA | Registered: February 08, 2015
posted
COULD THE FAN IN FRONT CONTROL SOME TYPE OF A REWINDER ,REMONTOIRE OR WHAT EVER. THE CUTOUT IN FRONT IS THERE TO EXPOSE THE ESCAPE WHEEL. DOES THE CLOCK RUN?
 
Posts: 140 | Location: St. Paul, Minnesota in the USA | Registered: June 11, 2008
Picture of Dave Turner
posted
I keep thinking alarm clock, but don't really think it is.


Dave Turner
 
Posts: 1975 | Location: Wilson, North Carolina in the USA | Registered: November 15, 2011
posted
The clock does run. I think the tension on the minute hand is a bit weak, and it does need a complete service.
 
Posts: 353 | Location: Nichols, New York in the USA | Registered: April 04, 2010
Picture of Dave Turner
posted
Ken, Found an old post here on a 103A movement I worked on, that shows a picture during the teardown.
Not exactly the same movement, but internal pictures might help.
https://ihc185.infopop.cc/eve/f...6029761/m/9713967087


Dave Turner
 
Posts: 1975 | Location: Wilson, North Carolina in the USA | Registered: November 15, 2011
posted
Dave, I have serviced the 103 A movement. This movement is much superior. I will be tearing it down soon, so I will probably provide some pictures and hopefully an explanation for the function of the additional train.
 
Posts: 353 | Location: Nichols, New York in the USA | Registered: April 04, 2010
posted
I believe that the additional train is used to wind a small mainspring behind the removeable platform that holds the balance wheel with its gear train.

 
Posts: 353 | Location: Nichols, New York in the USA | Registered: April 04, 2010
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