The AS 1580, called "Maximatic" debuted 1958. It had a selfwindig
mechanism, which was partially integrated and wound in both directions. The "Maximatic"
caliber was used in at least three families until it was surpassed by the
series 1716. These three families were the
1580-series, the 1680-series and the 1700 series. The
differences are small, hardly noticeable, and even the Flume Werksucher does not
show them in detail.
On this movement, the oscillating weight is axle-beared.
movement view without rotor
The oscillating weight with its outer teeth is located in a depthened part of the
upper selfwinding plate.
oscillating weight with open lock
With a locker and its screw, the oscillating weight can be released from the axle.
selfwinding mechanism
The selfwindig mechanism consists of three gears: A click wheel, which is driven by the
oscillating weight, a further click wheel, which is driven by the first one and turns in the
opposite direction, and a reduction wheel, which drives the winding mechanism on the main plate.
Oscillating weight in contact
The oscillating weight turns the first click wheel in both directions.
selfwinding mechanism, gears
The second click wheel is driven by the first one and so turns on the opposite
direction.
selfwinding mechanism, click wheel in contact
The click changer achieves, that the pinion only turns in one direction and is
released in the other direction. With that, it is guaranteed, that although both wheels turn in
both directions, their pinions only turn in one single direction. And this is a requirement for
a selfwinding mechanism, which winds in both directions with a very small dead angle.
upper plate selfwinding mechanism
The two click wheels are jewel-beared, but only on the movement side. The reduction wheel is
beared in a hardened metal bearing - here's indeed a difference to the other
"Maximatic"-caliber families, on which this wheel is jewel-beared,
too, and even has got a cap jewel.
movement without selfwinding mechanism
movement without escapement">
The construction of the movement works is pretty modern for 1958 as the center second is directly
driven.
main plate with minute wheel and cock
The save vertical space, the flat minute wheel is beared under an own cock. Even todays'
movements often use that kind of construction!
main plate only with mainspring barrel
The mainspring barrel is beared under a very small bridge. On this, just on standard
handwound movements, a click mechanism is used.
breguet coupling below the mainspring barrel
To release the selfwinding mechanism on handwinding the movement, a
breguet coupling is used on the bottom of the mainspring barrel. The
decoupling of the selfwinding mechanism reduces wear on its gears.
main plate without mainspring barrel, with breguet-clutch
Below the mainspring barrel, you can see the second part of the breguet coupling. It
is driven by the dial-side reduction wheel of the selfwindig mechanism. This wheel is
turned by the selfwindig mechanism shown above.
main plate
As you can see, there's still a lot of unused space on the main plate. The movement
construction is a very efficient one.
dial side view
On the dial side, you immideatly recognise the Incablock shock protection with its own
plate. On other movements, there are different shock protection systems or even no
shock protections at all.
Of course, such a fine movement has got a yoke winding mechanism. Here, the setting lever
spring has got a very special shape (at position "4").
Technical data
Manufacturer
AS
Caliber
1580
Number of jewels
17
Escapement
Anchor with pallets
Balance
Glucydur screw balance
Shock protection(s)
Incabloc
Balance cock direction
clockwise
Hairspring stud
fixed
Regulator type
Hairspring key
Movement construction
Fork Escapement wheel, Fourth wheel, Third wheel Center wheel Mainspring barrel
Construction type
solid construction
Winding mechanism
yoke
Setting lever spring
2 holes
Features
SCD,AUT
Functions
Hour, minute, second, selfwinding
Beats per hour
18000
Size
111/2''' (measured: 25,6 mm)
Production time
1958 - 196?
Image in Flume Werksucher
1962 94
Factsheet
Test Results
The movement came loose, only with a dial, into the lab. It was probably taken of a
gold watch (whose case was melted, what a pity!). To ensure, that there's no dirt in the
movement, it was completely disassembled, cleaned and oiled.
During the disassembly, a large water damage became visible. It could be removed more or less,
but there's sure some invisible damage on the movement.
Timegrapher Protocol
The results on the timegrapher are pretty poor, especially on such a fine
movement (selfwindig and with Glucydur screw balance) from such a fine manufactory.
It's likely, that the water damage above, and maybe also some shocks in the past and
probably long revision periods harmed the movement and are responsible for the
results. These are strongly depending on the position, but they are very constant!.
dial down
dial up
12 up
3 up
6 up
9 up
Measured Values
horizontal positions
dial down
+20 seconds/day
dial up
+25 seconds/day
vertical positions
12 up
-5 seconds/day
3 up
-20 seconds/day
6 up
+10 seconds/day
9 up
+60 seconds/day
timegrapher measurings
As told already - the deviations depend largely on the position.
