Urwerk’s “King Cobra” UR-CC1

The UR-CC1 “King Cobra” by Urwerk is a beautiful display of modern design and horological complication at its finest. Time as a concept is generally regarded as linear, but technical constraints and traditional watch making display time circularly. However that has all been changed with the new Urwerk model which shows the hours and minutes counting down the time by moving linearly. Urwerk is well known for their unusual looking jump hours, and the UR-CC1 follows this lineage. when looking at the King Cobra you immediatly notice two unusual looking indications: jumping hours and retrograde minutes. Both of which glow bright yellow on the black anthracite.

Urwerk credits Louis Cottier (1894-1966), a talented avant-garde watchmaker  who created  a clock displaying hours and minutes linearly, and the linear instrument panels of classic cars as the King Cobra’s inspiration .  However, Urwerk has taken his idea and expanded upon it through three years of development and a full year of testing to create the UR-CC1 which utilizes cylinders to display hours and minutes respectively.

Linear operation : On the UR-CC1, there are two horizontal indications displayed by two cylinders: one for the (jumping) hours and a retrograde cylinder for the minutes.
The seconds are displayed by a rotating disk on the dial.
The UR-CC1 is the result of more than three years of research, development, production and testing to ensure that the rotation and instant fly-back of the large hour and minute cylinders was achieved without compromising accurate timekeeping.

Triple-cam : The triple-cam is crafted from bronze beryllium, a metal selected for its inherently self-lubricating properties and low co-efficient of friction, and takes the form of three small inclines. The precise shape of the curve of the incline is relayed to the pivoting rack, while the teeth on the end of the rack mesh with and rotate the minute cylinder.
The triple-cam makes a complete rotation in three hours so that each of the three inclines takes 60 minutes, and 180 points of reference have been calculated on each of the three cams to ensure the precise and isochronic rotation of the minute cylinder.

Rack : The toothed segment at the end of the rack transmits and transforms the rotation triple-cam into the rotation of the minute cylinder. The toothed rack presents two properties that at first appear contradictory: absolute rigidity, so as to accurately transmit the motion of the cam to the minute cylinder; and extremely low mass to consume as little energy as possible and minimise the effects of gravity and accelerations/shocks.
The rack has been fabricated in silicon by Mimotec using their photolithography process. The honeycomb pattern of the silicon structure resolves the two apparently contradictory requirements of maximum strength and minimum weight.

Seconds Ring : The dial is animated by a rotating disk displaying the seconds, both digitally and linearly which is a world first. This incredible exploit was achieved thanks to Mimotec’s photolithography production technique, which enabled an ultra-light high-precision component.
To reduce mass to an absolute minimum, the minuscule numerals were even skeletonised. A small tab at 10 seconds bearing the URWERK logo precisely counterbalances the disk’s single-digit numbers. This marvel of micro-precision weighs only 0.09 grams, and that includes the SuperLumiNova.

Rotor Fly Brake : The pneumatic shock-absorbing Rotor Fly Brake automatic winding system minimizes rotor and mechanism wear and damage from shock and harsh movements. The operation of the Rotor Fly Brake is visible through a window on the side of the case.

Technical Specifications

Model : UR-CC1

Case : available in either grey gold with titanium baseplate (limited edition of 25 pieces) or black gold with titanium baseplate (limited edition of 25 pieces); brushed-satin finish

Movement : calibre UR-CC1; automatic winding regulated by a fly brake turbine pneumatic shock absorber

Indications : linear display retrograde for hours and minutes with jumping hours; second display both digital and linear

Dimensions : 45.7mm x 43.5mm x 15mm

Dial and Bridges : ARCAP P40. SuperLumiNova treatment on hours, minutes and seconds displays

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