americus swiss movement- winding troubles

[cduke]

Hello All,

My latest find is a deco watch with an americus movement which as I have been able to tell is a garden variety swiss movement that was imported under the americus name sometime in the 30's or 40's . Problem with this watch is that when I turn the stem in the winding position, all gears are set in motion. It was working fine, I had removed the stem to do some case work and when I put the stem back in, this problem resulted.  Any thoughts on what I may have done?

Thanks for all your continued help.

[HSL]

Just by the looks I would guess it's an AS 984 or some in that family.They came from 10.5" to 12.5"
When you say every gear is set in motion I assume you mean the drive train  too? If that the case you have two choices as I see it.
1. Either pin on the escapement wheel has snapped.
2. If the escapement wheel is turning too then either pin on the pallet fork has snapped of or it is not aligned.
Just some thoughts on the moving gears.

Edited November 27, 2018 by HSL

[Nucejoe]

Hi C

Says AS( A shield) On the mainplate the caliber No is expectedly shown somewhere. 

HSL said it all.

Expand please on all gears turning, check escapement and the train.

Regards joe

[Nucejoe]

Is the h/s stud in stud holder hole?  Can,t tell from the pic. 

Joe

[cduke]

8 hours ago, Nucejoe said:

Is the h/s stud in stud holder hole?  Can,t tell from the pic. 

Joe

Joe,

What is the h/s stud? Do you mean the set lever pin?  I am not familiar with h/s designation.

 

[Nucejoe]

The hairspring stud holds the hairspring attached to the ballance bridge. 

 The hairspring should be coiled concentric and level. 

Check the fork arbor pivots, pallets, escape wheel and its pivots and all train gears.

Regards joe

 

 

[Nucejoe]

Visit page eternaltools.com. shows you said designations.

 

[cduke]

2 hours ago, Nucejoe said:

The hairspring stud holds the hairspring attached to the ballance bridge. 

 The hairspring should be coiled concentric and level. 

Check the fork arbor pivots, pallets, escape wheel and its pivots and all train gears.

Regards joe

 

 

Hairspring ... of course.  Thanks for the tips.  I will look at these tonight.  

[cduke]

16 hours ago, HSL said:

Just by the looks I would guess it's an AS 984 or some in that family.They came from 10.5" to 12.5"
When you say every gear is set in motion I assume you mean the drive train  too? If that the case you have two choices as I see it.
1. Either pin on the escapement wheel has snapped.
2. If the escapement wheel is turning too then either pin on the pallet fork has snapped of or it is not aligned.
Just some thoughts on the moving gears.

yes. The escapement wheel spins as does the rest of the drive train. It appears like the pallet fork has snapped.  Thanks for the diagnosis. Not sure how that happened.  This movement might become parts as I suspect a pallet fork will be tough to find.

Thank you very much.

[HSL]

If you got the case for the movement I think it would be a shame to scrap it, as of a chance I think I have just the pallet fork you need..

This has a bad balance with an end shake with a distance halfway to the moon, but otherwise all good.

 

[cduke]

4 hours ago, HSL said:

If you got the case for the movement I think it would be a shame to scrap it, as of a chance I think I have just the pallet fork you need..

This has a bad balance with an end shake with a distance halfway to the moon, but otherwise all good.

 

Thanks HSL.  How much do you want for it?  I agree that it would be a shame but I don't think these watches have much value.  The case is very similar to the hamilton piping rock deco style that was very popular long ago.

[HSL]

Well a true horder never sells anything but he always tries to  enable others to begin collecting.
Just popp me a message with your address info and we go from there...