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 Fig. 1  Fig. 2  Fig. 3 | 3000 anonymous Features key wind and set independent jumping sweep second Data 20''', Dm= 44.6mm, Do= 45.1mm H= 4.35mm F= 0.5mm 20 jewels f = 18000 A/h power-reserve 31h run time independent second 32h Mainspring / battery key 1.2²mm Hands watch : 1.35 x 16.0 x 0.20mm second: 1.35 x 13.5 x 0.20mm Comments about the data | Remarks movement type: Lepine-Calibre III cylinder escapement two barrels with barrel with Geneva stopwork indirect minute start- and stoppable jumping sweep second (Fig.3): The last pinion A of a separate train with own barrel has a lever B. This is stopped by each of the 6 teeth of the escape wheel pinion C, and a bit later released. As the escape wheel with 15 teeth turns once in 6 seconds, the lever B is released once per second, and the second hand can advance one second. If the end of the stop lever D is set to the left, it stops lever B, so the second hand stops, but the time train continues running. Example, year: signature; shock device ca. 1840: - 91 on case: 10694, ERT, 16 (91 respectively), 18K - Echàppement à Cylindre, Dix Huit Trous en Rubis (cap jewels not counted back then), Secondes Indépendentes Not for Sale! The movements presented in this caliber finder are not for sale. This is only a data sheet for identification and evaluation of the movement calibre, as well as for approximate dating. |
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