Instead of the power from the mainspring flowing directly into the escapement, it must first pass through Arnold & Son’s constant force mechanism. The already controlled power supply charges a small hairspring, which releases a consistent amount of force to the tourbillon once per second. With this mechanism, there will nevertheless come a point once the power released by the twin barrels and the constant force mechanism drops below a stage that’s sufficient to maintain a normal output. When this happens, the watch stops rather than allowing an isochronal error to creep in the timekeeping.In addition to this intriguing solution, the Arnold & Son Continuous Force Tourbillon comes with a deadbeat seconds complication, which causes the seconds hand to “tick” rather than sweep as you may expect in a mechanical timepiece. Exceptional consistency is attained as a result of the symmetry of the movement’s structure, as well as the fact that the constant pressure escapement remains stationary throughout operation, whereas the tourbillon cage rotates once a minute. This is in an effort to reduce the influence of gravity on the escapement’s functioning. Assuming, however, that this view is not likely to be worn out in the presence of strong magnetic fields (it is hardly suitable for use on a building site or while flying a helicopter, by way of example), the negative perfectly matches the planned application.The Arnold & Son Constant Force Tourbillon watch is a limited edition of that only 28 will be produced. It’s a 46mm 18ct rose gold case fitted using an anti-reflective sapphire crystal and a sapphire display back. The A&S5119 motion has 39 jewels, a depth of 6mm, a 90-hour energy reserve, and operates at 21,600vph. The NAC grey mainplate as well as the palladium-coated bridges are produced from nickel-silver and hand-finished with polished edges and brushed surfaces, gold screw-down chatons, and bevelled and polished screw heads. The motion is almost perfectly symmetrical, and all the technical elements are visible on the dial-side. The three-dimensional motion structure is intended to replicate the English tradition of marine chronometer structure. The watch is water resistant to 30 metres and comes on a hand-stitched brown leather alligator strap.
For the eight consecutive years, Arabian Watches & Jewellery (AWJ) Magazine hosted the Middle East Premier Awards, presented alongside Jewellery Arabia 2012. The Presentation Ceremony, was accompanied by a grand dinner reception at The Ritz Carlton, in the Kingdom of Bahrain on Tuesday, 16 October, the inaugural night of Jewellery Arabia 2012. The event was attended by over 300 distinguished high profile guests.
HMS1 18-carat white gold case, cream dial, case diameter 40 mm, A&S1001 exclusive Arnold & Son mechanical movement © Arnold & Son
Arnold & Son is proud to communicate as winner in the category ‘Best Classical Watch’ the HMS1 in 18-carat white gold case with silver coloured dial. The case is 40 mm in diameter and houses a manufacture hand-wound movement which is only 2.7 mm thick. The HMS1 is a perfect reflection of traditional classical elegance in the Arnold & Son’s Royal Collection. The Royal Collection which is inspired by the timepieces made during the earlier part of John Arnold’s life for King George III and the royal court, the HMS1 in the Arnold & Son Royal Collection is an eloquent expression of elegance and sophistication in the inimitable English style.
The A&S1001 calibre, with its gorgeous Côte de Genève rayonnantes decoration was an inspired choice and takes up the iridescent play of light that creates depth and dynamism as in the dial. The manufacture movement is made of rhodium-treated nickel silver with haute horlogerie finishing, with hand-chamfered bridges with exquisitely polished edges, fine circular graining and blued screws. The two barrels providing over 80 hours power reserve is a desired achievement, whereas most watches in this segment of the market only provide a single barrel. The solution of having two barrels also provides more constant power and more constant force, which will result in improved accuracy the whole time the movement is running.
The winners and details of the awards in the category as follows:
Category: Best Classical Watch
I) Arnold & Son – HMS1
II) Vacheron Constantin SA – Malte 100th Anniversary Edition
One of the greatest problems when it comes to accuracy is moderating the supply of power to the regulating organ of this timepiece (in this case, the tourbillon featured in the lower right quadrant of the flow). The mainspring, like every component of the size, is susceptible to certain molecular inconsistencies obtained during the creation procedure. Any external or internal inconsistency could result in a fluctuation of power delivered into the equipment train. And that is before one even considers the extreme drop-off in torque once the mainspring satisfactorily uncoils. Since the mainspring winds down, the total amount of power delivered to the escapement dips. This can possibly play havoc with all the timekeeping, therefore Arnold & Son have attempted to remove this mistake by installing a “constant-force” mechanism. The modern incarnation of the business that lay dormant for over a century is doing what it is to reconnect with the source of its inspiration.Practically speaking, this component takes the location of a fuseé, which is an age-old continuous force complication we have observed on aBlogtoWatch very recently in the new Zenith Academy Georges Favre-Jacot Anniversary piece (read the review here), for instance. The first barrel powers the gear train, while the next barrel tops the torque up of the initial whenever it drops below the best level. But their innovation does not stop there.
III) H. Moser & Cie – Monard Date Marrone
The Winner: Arnold & Son – HMS1
For more details on the awards and the award’s photo gallery, please visit:
Main technical characteristics
Exclusive Arnold & Son mechanical movement, hand-wound, 21 jewels,
diameter 30 mm, thickness 2.7 mm, power reserve 80 h, two barrels,
Functions: hours, minutes, small seconds at 6 o’clock
Movement decoration: 18-carat white gold case:
nickel-silver movement, rhodium treated with Haute Horlogerie finishing:
manually chamfered bridges with polished edges, fine circular graining and
Côtes de Genève rayonnantes, blued screws
Dial colour: silver
Case: 18-carat white gold, diameter 40 mm, cambered sapphire with anti-reflective coating on both sides, case back see-through sapphire, water-resistant to 30 m
Strap: Hand-stitched black alligator leather
Limited edition: 100 pieces
References : 1LCAW.S03A.C111W 18-carat white gold case, silver coloured dial