THE RMK IN-HOUSE MOVEMENTS
BY MÜHLE-GLASHÜTTE
The hand-wound movements of the “R. Mühle & Sohn” manufactory line were designed entirely in the spirit of traditional Glashütte watchmaking. Thus, for the first time, an engraved balance cock and colorful screwed gold chatons can be admired in these Mühle movements.
In terms of fine adjustment and cover plate, the manufacture calibers – in contrast to the Glashütte movement technology common today – go their own way. Naturally, our further development of the swan-neck fine adjustment is used in them: the particularly shock-resistant and woodpecker neck fine adjustment, developed by Mühle-Glashütte. The cover plate was also designed as a three-fifths plate with a separate cock for the escape wheel.
TRADITION VS. MODERN COMBINATION
Even at the design stage, traditional and innovative features were harmoniously combined in the Robert Mühle calibers. This also applies to the aesthetic and functional finishing of the movements. The crown and ratchet wheel, for example, are finished in the classic Glashütte sunburst finish – while our finishers did not miss the opportunity to provide the rare three-fifths plate with Mühle’s own surface decoration.
THE NEW MÜHLE RIBBING
At first glance, the finish of the three-fifths plate resembles a traditional belt grind, but it is much finer in execution. The new Mühle finish is characterized by 4-millimeter-wide stripes that are created with the help of a rotating milling pin. This must be moved over the blank at an exact angle of 0.5 degrees in candle-straight lines and at a precisely defined speed so that it can develop its full effect.
THREE-FIFTH PLATE
In addition to the famous three-quarter plate, Glashütte repeatedly used other shapes for the cover plate. Movements developed shortly before 1950 were equipped with a three-fifths plate and a separate escape wheel cock. With the return to the rare plate form, we expand the movement technology in use today in Glashütte.
