Patek Philippe Grandmaster Chime Celebrates their 175th Anniversary

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Patek Philippe Grandmaster Chime Ref 51752

Patek Philippe Grandmaster Chime Ref. 5175 Patents and Innovations (Straight from Patek Philippe)

Patent: Alarm mechanism with time strike

Mechanism that acoustically indicates a preset alarm time with hour, quarter-hour, and minute strikes using the chiming mechanism of the minute repeater.
 

Patent: Isolation of the Grande Sonnerie in the Silence mode

Mechanism that totally uncouples the Grande Sonnerie from the movement when the Silence mode is selected, eliminating friction and thus power consumption.
 

Patent: Selection of strikework operating mode

Mechanism that allows the automatic time strike to be selected or disabled with a single slide switch: Grande Sonnerie, Petite Sonnerie or Silence. Formerly, two separate switches were needed to make these settings.
 

Patent: Date repeater

Mechanism that obtains date information from the perpetual calendar and forwards it to the repeating mechanism. Manufacture president Thierry Stern is the inventor.
 

Patent: Reversible wristwatch case

Wristwatch case with rotating and latching devices in the lugs, allowing it to be turned along the axis from 12 to 6 o’clock and locked in either of 2 positions.
 

Patent: Mechanism for a four-digit year display

Mechanism that automatically synchronizes the four-digit year display with the leap-year cycle and allows convenient correction of both displays in either direction.
 

Innovation: The strikework differential

An innovative masterpiece of micromechanical engineering (not patented): the differential between the strikework double barrels and the two strikework mechanisms for the Grande Sonnerie (incl. minute repeater and alarm) and the date repeater. It has a diameter of 7.2 mm and consists of 19 separate parts, one of which is an 11-part ball bearing with 7 balls with a diameter of 0.3 mm each. Despite its small size, it is robust enough to transmit the torque of the strikework barrels which exceeds 1700 gmm.
Patek Philippe Grandmaster Chime Ref 517519

Patek Philippe Grandmaster Chime Ref. 5175 – Patek Philippe 175th Anniversary Watch Making of Video

Patek Philippe Grandmaster Chime Ref. 5175 – Patek Philippe 175th Anniversary Watch Video Gallery

 

Author: Nick Glasnovich

Founder & Executive Editor of TickTickVroom.com.

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