What an interesting piece to open and service. Works like a champ... ran 1 second fast on a 10 minute run.
Hands are hand made. Screws are flame blued. Cylinder escapement. Wolf tooth click. Wind stop mechanism. Starts and stops with a slider to interfere with the balance. Self contained 4 Jewel balance assembly with 2 jewel escape. Staked flat hairspring.
(edit) I probably should have put this in the European watch section.
Posts: 2032 | Location: San Diego, California in the USA | Registered: August 30, 2012
In 1881 serious time studies were reported in use at American Steel companies. No doubt this idea emerged from earlier routines by Europeans (likely Germany) who used time studies to schedule many things military and industrial.
I would expect this was used in Europe somewhere for such time studies. I would guess the 1870s'. Paul if you give me a call, I can suggest how you can get the stop works functionally back together.
Posts: 6492 | Location: Southern California in the USA | Registered: July 19, 2007