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View picture in original size
Fig. 1

View picture in original size
Fig. 2

View picture in original size
Fig. 3

View picture in original size
Fig. 4

Langendoef 500 old

stem wind and pin set alarm

18''', Dm= 40.4mm, Do= 41.05mm
H= 7.0mm
(bell spacer +1.450mm, Fig.2)
F= 0.85mm
T= 3.4mm
6 jewels
f = 18000 A/h
power-reserve 38h/56h
(alarm on/off)
alarm 20s

1.85 x 0.55mm

Comments about the data

cylinder escapement
alarm wheel with setting hand beared in dial (Fig.4)
alarm setting only counterclockwise
ratchet on dial side, crown mechanism with singke-arm rocker bar

On alarm bell stamped Swiss patent 41794:
mechanism making 2 revolutions of the barrel arbor available for the alarm
filed 11-27-1907, Société d'Horlogerie de Langendorf (CH)

Example, year: signature; shock device
ca. 1910: V - 49 3585

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.

bidfun-db 21.3 © 02-08-15, mtr-Ranfft

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