The stop action is mechanical

Principle :

The stop trace-rodare are linearly guided in two points :
By the square holes of the facade and by the other square holes behind the windchest

By a set of kneecaps and set squares, the movement is passed on in 90 °, towards levers on the sides of the windchest.

The ratio enters the movement of the stop in the facade and the movement of the slider is 8/50.
The stop stroke is 8 cm
The slider stroke is 1,6 cm

The stops are on the sides of keyboards as this :

At the letf side : Grand-Orgue stops
At the right side : Positif and Pedale stops

Mechanism mounted under the windchest

Stop action

Blocs for the levers





Slot for the passage of the mechanics through a foot of the windchest frame

levers

levers action

Other view

Positif sliders levers forms

The mechanics of the chimney flute 8' passes outside the windchest

Stop Knobs

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