iwc Pellaton- seiko magic lever

[george_]

Πρωτη η iwc ,αλλα της σεικο ειναι πιο αποτελεσματικο και το "υιοθετησε" και η iwc επειτα..ολα καλα λοιπον







The automatic winding system pictured was developed in the late 1940s and early 1950s by then technical director Albert Pellaton. The way it functions differs fundamentally from other designs. The rotor as the most freely moving part is subject to the greatest stresses and strains created by the movements of the arm and is mounted on a sprung plate - an ingenious form of shock resistance. Contrary to the design of other watches, the movements of the rotor are not transmitted to a wheel train via a gear system but simply move a cam, which is similar in appearance to the heart piece of a cam. Running on the heart are the ruby rollers at the two ends of the fork in a lever system, which eliminates idle running and transmits the kinetic energy to a ratchet wheel with helical teeth, and from there to the winding wheels and barrel. In the diagrams below, the small and great click can be seen, which mesh with the helical teeth of the automatic wheel and act as winding devices and back stops. In the diagram on the left, based on the position of the heart relative to the ruby runners, the small click is responsible for winding the movement. In the diagram on the right, this function is handled by the great click.



http://www.timezone.com/library/itsabouttime/itsabout0002

[george_]

iwc pellaton(σημερα)

[george_]

Cartier calibre 1904 MC....

[george_]

seiko magic lever





7s26(seiko monster)

[george_]

Cartier calibre 1904 MC....

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