Stop watch "return in flight" or "Flyback"

Any typos are as a result of direct translation of the original French.

The stop watch with function return in flight has a characteristic compared to a traditional stop watch.
The flyback, makes it possible to make a restoring of timing in progress and to start again one of them, instantaneously, while pressing and by immediately slackening the push rod of restoring.

A: Coil with columns
B: Order departure/stop
C : Order of restoring
D : Brake
E : Hammers
F : Rock of disengaging of intermediate wheel of meter of minutes
G : Rock of clutch
H : Rock of restoring
I : Hook
J : Coil stop watch
K : Intermediate gear meter minutes
L : Coil meter minutes
M : Coil on field
N : Coil clutch

Operation

Starting position, the stop watch is not under operation

The hammers are raised.
The brake is supported against the wheel of stop watch.
The wheel of clutch do not be in catch with the wheel of stop watch.

Departure of the stop watch.

While pressing on the starting push rod, one actuates the order, which, by the intermediary of the hook (red arrow), will make turn the wheel to column.

The nozzle of the brake will go up on a column and thus will release the wheel of stop watch (see image of left).

The nozzle of the rocker of clutch will fall between two columns and thus, the transmission coils on field-wheel of clutch-wheel of stop watch could be done.

Return in flight (flyback)

One presses on the push rod of restoring when your stop watch is moving.
The ordering of restoring will push a rocker, which it, will push the hammers on the hearts of the wheels of stop watch and meter minutes.
On the hammers, 2 pins are fixed and which are used to release 2 functions:
The first (in green) is used to break the transmission between the wheel of clutch and the wheel of stop watch.
The second (in red) is useful, via the rocker of disengaging of intermediate wheel of meter of minutes to push the latter downwards.

This makes it possible to avoid any contact during the restoring, between the finger of stop watch and the intermediate gear of minutes.

The red arrow indicates the intermediate gear of meter minutes and above the arrow, the rocker of disengaging which pushes the wheel axle.

At the time of this function the brake remains raised.