I am certainly no expert on Hamiltons, but I recently shared photos of my 975 with Larry Lamphier, and he suggested I post them on IHC 185. I had always wondered how this watch set since it doesn't seem to have the same setting and lock-out mechanism as my other two PS Hamiltons (992 and 956). I don't know if there is a connection, but the inscription below the serial number on the plate reads ""Pat. May 5, 1898". When the little screw above the crown wheel is turned counterclockwise, the lever adjacent to the stem is rotated up and locks. Comments?

975

975-2

975-3

975-4

Eric,
I think Lindell talked about this in the "watch repair section" just cant remember exactly where it's at. Just play around with words in the search section.

Hope this helps!
Tim

What is shown in the first 3 pictures is the mechanism that Hamilton used on their early pendant~set 16sz watches. It is commonly called a "stem-lock". There were one or two screws [different models] that one turned in the direction of the arrow [some had arrows, others didn't] and it would allow one to then remove the stem from the watch so that the watch movement could then be taken out of the case. These require a special stem also. It is a detent style stem most commonly seen on Swiss watches.

Waltham used the same principle on the 1888 model.

Turning the screw moved a bar of metal out of the way and then the stem could be removed from the movement.

Thank Goodness Hamilton finally got over this "self~imposed" hurdle and moved on to bigger and better things !!

regards,
bb

Thanks,Buster. That makes sense.

Eric

Thanks Buster!

I have never seen one of these and figured that was what it was, but never could have explained it like you just did.

Thanks again.

Regards,
Larry