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Glossary
102
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The special element of this detached escapement is that the Gear train
*
is
largely decoupled from the oscillating system via an additional mainspring
*
,
allowing it to oscillate nearly fully freely. It allowed the already excellent rate
*
results of precision pendulum
*
clocks to be increased.
In 1931, the innovative Swiss engineer developed the self-compensating
Nivarox
*
alloy to manufacture balance springs.
Usually an adjustable lever on the Balance cock
*
upon which the outer end
of the balance spring is attached.
A particularly lavishly tempered Invar
*
with very even temperature behavior.
Oscillation phase of the balance. The path from the end of the drop
*
to the
inversion point is called the outbound Supplementary arc
*
. The path from the
inversion point to the discharge
*
is called the inbound Supplementary arc.
A very popular detached escapement in widespread use for portable
timepieces. The round dial with the cutaway in the seconds subdial available
as equipment allows a free view of the escapement, the heart of your
Mechanica M2, which is usually hidden from view. This free view is naturally
especially attractive with the lavishly finished escapement with Screw
balance
*
, blued balance spring, and blued screws.
Heat treatment of the Invar
*
pendulum
*
rods to relieve material stress. Only
tempering can achieve constant thermal behavior for pendulum
*
rods.
Shaping of the end of a balance spring that ensures that the center of
gravity remains in the center during the to and fro of oscillation.
An electronic measuring device for the precise determination of the
momentary precision of a movement. The sounds the escapement makes are
recorded and evaluated with a very sensitive microphone.
Thermal treatment of carbon steel. The polished steel is heated to approx.
300°C, which causes an oxide layer to build up on the surface, which
appears as an attractive blue to the human eye.
Strasser escapement
Straumann Dr.,
Reinhard
Stud carrier
Superinvar
Supplementary arc
Swiss Lever escapement
Temper
Terminal curve
Timing machine
To blue or temper
Screw balance
Seconds wheel
Simplex escapement
Semi-oscillation,
vibration
Spring barrel
Stainless steel
Star wheels
State
Steel arbor
Stopworks
Strasser, Ludwig
(1853-1917)
In classic high-quality watch movements the balance with screws used to
change the moment of inertia.
Gear wheel
*
on the arbor of the second hand. It is riveted to the pinion and
makes a full rotation once every minute. The Seconds wheel transmits
the 18,000 hourly Semi-oscillations
*
(2.5 Hertz) of the escapement to the
second hand and transmits the energy from the Fourth wheel
*
to the escape
wheel pinion
*
.
An escapement with a single escape wheel
*
. In sharp contrast to the double
escape wheel of the Duplex escapement
*
.
Displacement of a pendulum
*
or balance between two points of inversion.
Contains the mainspring
*
, which is needed to drive the movement. It is
outfitted with the stopworks
*
and also constitutes the first gear in the Gear
train
*
. It directly drives the center pinion
*
and shares an arbor with the click
*
.
By alloying steel with other metals like nickel and chrome it displays special
characteristics like increased resistance to corrosion.
To upgrade the movement of your Mechanica M2 we offer a 22-part set of
finely polished and threaded Stainless steel
*
screws and washers.
With the mirror-polished Stainless steel
*
hands available as equipment, your
Mechanica M2 gets an individualized look that seriously enhances the dial.
Along with the Blocking stud
*
, these make it possible for the stopworks
*
on
the Spring barrel
*
to bank the mainspring
*
.
The value which the display of your timepiece deviates from the reference
time.
Shaft or axis in a movement.
A device comprising stop wheels and a Blocking stud
*
that is placed between
the Spring barrel
*
arbor and the Spring barrel. It makes it possible to bank
the mainspring
*
.
Professor Ludwig Strasser is the inventor of the free Strasser escapement
*
named for him. He was co-founder of the Glashütte company Strasser &
Rohde and later director of the German School of Watchmaking in Glashütte.
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