Poljot 2614B
Description
This 11 1/2 ligne windup movement from Russia, the caliber Poljot 2614B which is - details are unknown, sorry for that - the further developed Poljot 2614, has got an interesting construction, and is also aesthetically very nice due to its strict geometrics.
base plate with intermediate wheel
The first, odd detail is the largely ruby-beared intermediate wheel between mainspring barrel and minute wheel. Since in this construction, the barrel turns the other way round, there’s also a need for an intermediate wheel in the keyless works, to wind it up the usual way.
base plate with minute wheel cock
The minute wheel is ruby beared under an own cock
gear train
The remaining gear train is traditionally made, the minute wheel is followed by third wheel, center seconds wheel and escape wheel, all three near to each other to give the large three-arm anual balance wheel as much space, as possible.
side view of the gear train
Maybe the balance wheel is even made from Glucydur, at least its arms are shaped accordingly.
The balance wheel is beared in two russian three-leg shock protections, which remind a bit of older Junghans shock protections. It beats slowly (especially for 1972) with 18000 A/h and regulates a conventional swiss pallet lever escapement.
yet empty dial side
On the yet empty dial side, you can already see the space for the calendar switching wheel. You can also easily spot the cutouts for the pallets, which can easily be oiled from the dial side.
double hour wheel
The calendar switching wheel is driven by a double hour wheel, whose upper part is driven by the changer wheel and whose lower part drives the switching wheel.
calendar mechanism
The switching wheel tightens the lever (between position 8 and 9 o’clock), so that at midnight, it can instantly unload and advance the date ring one position.
A semi-fast correction is possible by turning the hands back and forth between 8pm and midnight.
Poljot 2614B: Dial side
A nice detail is the spring for the locking lever of the date ring, which is fix inserted into the cover and thus cannot fly away easily.
In the lab
Timegrapher result
Probably due to age and wear, the timegrapher results are not too much satisfying and the one extreme rate indicates a problem with either the balance pivots or the shock protection.| horizontal positions | |||
|---|---|---|---|
| dial up | -200 s/d | 151° | 0.0ms |
| dial down | +23 s/d | 272° | 0.0ms |
| vertical positions | |||
| crown right (12 up) | +10 s/d | 217° | 0.2ms |
| crown up (3 up) | +8 s/d | 226° | 0.3ms |
| crown left (6 up) | -13 s/d | 210° | 0.1ms |
| crown down (9 up) | -12 s/d | 215° | 0.2ms |
Technical data
| Manufacturer: | Poljot |
| Caliber: | 2614B |
| Caliber base: | Poljot 2609 |
| Size: | 11 1/2''' (measured: 26,0mm) |
| Height: | 3,80mm |
| A/h: | 18000 |
| Number of jewels: | 17 |
| Escapement: | Pallet lever |
| Balance types: |
Glucydur anular balance (three legs) |
| Shock protection(s): |
3 arms, russian |
| Balance bearing / direction hairspring: | Clockwise |
| Moveable stud: | yes |
| Adjust mechanism: | Hairspring key |
| Construction: |
|
| Construction type: | solid construction |
| Winding mechanism: | yoke winding system |
| Setting lever spring: | 4 hole(s) |
| Features: |
|
| Production period: | 1972 - ???? |
| Inventory number: | 23032 |
Usage gallery
Poljot gents watch