The Bifora 84⁄1 is an early german pallet anchor movement, made in Schwäbisch Gmünd in the watch factory of Joseph Bidlingmaier..
This movement is classical in all aspects - not only from the craftsmanship with the slanted briges and their angled borders, but also of its construction:
The non shock-protected screw balance has got its hairspring connected to the balance cock. Its effective length can be regulated by a long regulator arm. With the pallet lever escapement and all gears beared in jewels, a good precision is guaranteed.
On the dial side, there’s a yoke winding system. On later movements, Bifora often uses a rocking bar winding system, maybe due to cost reduction.
|Number of jewels:||15|
Nickel screw balance|
|Balance bearing / direction hairspring:||Clockwise|
|Adjust mechanism:||Long regulator arm|
|Winding mechanism:||yoke winding system|
|Setting lever spring:||3 hole(s)|
|Functions:||hour, minute, decentral second|
|Size:||8 3/4''' (measured: 19,2mm)|
|Production period:||1918 - 1934|
Flume: 1947 21|