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Sprachwahl
The french Parrenin 1901 is the only selfwindig movement of that
manufactury and hence rare to find.
With a diameter of 11 1/2 lignes, it was used in mens' watches,
but had a big disadcantage: With a height of 7.9mm, it was way too thick to
be used in high numbers.
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| movement view without rotor |
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The one-piece rotor , whose diameter is identical to those of the movement, sits
on a thin axle and is fixed by a cross-type leaf-spring. You can easily imagine, that
this construction will wear out soon and make the oscillating weight tumbling at the
case back or main plate.
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| selfwinding mechanism, outside |
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The oscillating weight winds in both directions via one mobile and two fixed
gears. One of those two is blocked in one direction by a click.
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| selfwinding mechanism, flipped over |
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The rotor axle, the two gears and the driving wheel for the mainspring barrel are
all beared in synthetic rubies.
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| selfwinding mechanism, Breguet clutch |
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To detach the selfwinding mechanism when winding the watch manually, the driving
gear contains a vertical breguet clutch - effective, but high building.
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| movement view without selfwinding mechanism |
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The very thick movement contains a directly driven center second hand, which is
located under a hat-shaped plate, together with the escapement wheel and third wheel.
The golden-toned screw balance is beared in two Incablock shock protection bearings. The
hairspring is fix connected to the balance cock, its effective length can be regulated
at the hairspring key only, despite the scale at the balance cock, which is more or
less unused.
All gears are jewel-beared, escapment wheel and third wheel even have got a cap jewel
on the movement side. In sum, this leads to 25 jewels.
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| side view |
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On the side view, you see the enormous hight of the movement - even without
selfwinding mechanism. Especially the arbor of the escapement wheel is longer than on
almost any other movement.
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| dial side view |
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This movement has got a date indication, on which the odd days are written in black,
the even days in red. There's no quickset mechanism.
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| date mechanism |
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The date mechanism is constructed simply: The hour wheel has got a finger, which
advances a star-shaped wheel every twice a day. Every second tooth of that gear is longer
than the other one and connects to the date ring, advancing it one position.
At "12", there's a click spring, which assures, that the date switches properly.
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| dial side view without date mechanism |
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On the dial side you see the yoke winding system (here with a broken setting lever
spring) and the Incabloc shock protecion system.
Technical data
| Manufacturer | Parrenin |
| Caliber | 1901 |
| Number of jewels | 25 |
| Escapement | Anchor with pallets |
| Balance | Nickel screw balance |
| Shock protection(s) | Incabloc |
| Balance cock direction | clockwise |
| Hairspring stud | fixed |
| Regulator type | Short regulator arm |
| Movement construction | Fork
Escapement wheel, Fourth wheel, Third wheel
Center wheel, Mainspring barrel |
| Construction type | solid construction |
| Bridge shape | Tyrolean hat, 3 gears |
| Winding mechanism | yoke |
| Setting lever spring | 3 holes |
| Features | SCD,QG,AUT |
| Functions | Hour, minute, second, day, selfwinding |
| Beats per hour | 18000 |
| Size | 111/2''' (measured: 26,0 mm) |
| Image in Flume Werksucher | 1962 88 |
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| Factsheet |
Test Results
The tested specimen here came as loose movement, so it can be assumed, that it
is not in a perfect condition. The timegrapher protol proves this:
Timegrapher Protocol
While the tested specimen showed good results in the horizontal positions,
it ran really faulty in the vertical positions, showing all kinds of errors from
running more slow that testable till very fast.
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| dial down |
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| dial up |
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| 12 up |
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| 3 up |
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| 6 up |
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| 9 up |
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Usage gallery
