Essentiel

The Philosophical Regulator

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Cutting through to the Essential.

The name for the watch came naturally – the word kept coming up in every philosophical, technical and design consideration.

Inspiration for the purity of the design came from leafing through a work by Antide Janvier and coming across a magnificent regulator dating from 1800. I was going to create a regulator. A philosophical one. In a 39mm case.

I always begin with designing the dial, then I create the movement that corresponds to the watch face I’ve drawn.

The 24-hour disc would thus be the philosophical disc. It would carry the owner’s message, addressed to them and to generations to come.

Advent of the Essentiel

I decided to build my caliber on several foundational watchmaking specialties. I wanted my own balance wheel, with proportions identical to those of pocket watches, a Swiss anchor escapement with a ‘moustache’ lever, wolf’s teeth on the ratchet, large and fine and elegant wheels, a spine of mirror-polished steel components, ébauches in silvered maillechort for the same natural feel as the marvelous pocket watches from the golden age of watchmaking, and of course absolute comfort and purity.

After completing initial calculations and choosing an agreeable frequency of 18,000 vibrations per hour, I turned to the desired thickness for a 39mm watch. 8mm, excluding the crystal, I felt would achieve perfect diameter/thickness proportionality. So began the 3D modelling phase, and the hours spent starting over and over again to ultimately capture this ever-elusive harmony, from the buckle to the crown, and from the crown to the balance wheel.

Finalizing the technical file together marks the transition between virtual 3D modelling and real materials. Once the countless specific fittings have been carried out, the actual work can finally begin. When you’re creating your own caliber, the extent of all that has to be done upstream before you can even get started is staggering – and it is nowhere to be seen in the final product! At this stage, it takes an unstoppable passion for and an unshakable faith in horology to keep pushing on.

For months, nothing happens; the movement is lifeless, not even the slightest oscillation. Make. Test. Modify. Repeat. And repeat until perfect. As my master Philippe Dufour taught me, there’s no time limit for doing things right. There’s no room for approximation in this horological quest within the traditional art of watchmaking. Every morning, the material challenges you anew to ‘Excellence’ – and you know you must step up. This speaks to the humility that characterizes the craftspeople who are truly – and daily – immersed in the materials of their art.

The “L'Essentiel” watch is born.

"In my imagination I never saw it as a watch, but as philosophical mechanical instrument"

It may sound strange, but when I must explain the purpose of my work in three words, “philosophical mechanical instrument” always rings true and in tune with my original intention. A living mechanism that keeps track of one’s life (lives), transmitting and safeguarding a philosophical message.

I would have loved to have been handed down a mechanical instrument by my forebears, something that messages me and guides my steps throughout my existence. To inscribe fundamentals onto a mechanism as one chisels truths into marble. It is a feeling that gives me great comfort and joy because infusing my creations with these words gives me the chance to keep the light shining on life values: Today, Now, Love & Gratitude.

On the watch, I chose Latin as a witness to the past: Hodie (today) and Nunc (now) appear in the sun. Simple, everyday words, but they perfectly express the feeling of childhood. The absolute present, not tomorrow, not 2 hours from now, just now. As for the choice of ‘midnight words’: Amor & Gratia. Love & Gratitude – words that are obvious to me, and very powerful ones that can end a day in a wondrous manner.

Built like a pocket watch ...

The choice of materials was of course fundamental – to ensure longevity, comfort, and quality of the exterior for watchmakers who will be caring for my creations in the future. Everything, without exception, abides by the motto: "Creare Durare" - Create to endure.

The materials would thus be those reflecting the purest watchmaking tradition, with as few galvanic treatments as possible, to maintain a perfect level of finish over time.

The face of the watch

The 24-hour aperture reveals the unfolding days, with its "hidden" words for future generations. I chose Latin to give them a hint of mysteriousness. Hodie Nunc (Today Now); Amor & Gratia (Love & Gratitude).

This philosophical disc was a real challenge, as it’s made of aventurine with the sun and moon metallized in gold and silver, all pad-printed. The choice of aventurine and its starry sky effect is perfectly suited to this open window on time, our personal, intimate time.

As for the other dials, I wanted to use Grand Feu enamel and guilloché in my first creation. These are magical, timeless crafts. Grand Feu enamel, with its immortal character, allows the dials to be domed, enhancing the generousness of L'Essentiel. The central dial is in maillechort (nickel, copper, and zinc alloy) with a hand-turned guilloché. One of my dreams, to learn the art of guillochage, came true thanks to the relationship based on transmitting savoir-faire I have with the master of this art, Georges Brodbeck.

The hands are traditionally crafted, finesse being one of the hallmarks of elegance. The regulator hand, indicating the minutes, sits at the center of the slender mechanical instrument. They are flame-blued, the old-fashioned way, and the slight variations in color give each its uniqueness.

The barrel and the time train

Le premier élément visible en suivant la logique énergétique de la montre est le barillet et son rochet. J’ai toujours été émerveillé de découvrir les roues de couronnes et de rochets à profils à dents de loup dans les anciennes montres de poche. Ce profil de dents donne une touche particulière sur ces deux composants, surtout si les dents sont anglées et polies, puis les dessus de ces deux pièces sont « soleillés » dans le sens de rotation de la pièce afin de respecter la logique et l’harmonie mécanique.

The maillechort (nickel, copper, and zinc alloy) barrel bridge houses the suspended crown wheel and the click’s spring, which is integrated into the bridge. I chose to design a single-piece click that echoed the shape of the barrel bridge.

After the barrel and its 60-hour power reserve comes the time train, with its large gold-plated spoked wheels – beveled, circular-grained and countersunk on both sides. Here too, I wanted large, majestic wheels and a large, beautiful center wheel. For the 3 wheels of the time train, I wanted a common logic to their bridges and consistency in the finishes, by creating a bridge for each wheel – like the calibers of iconic pocket watches. I wanted to graphically represent a spine of mirror-polished steel bridges, as slender and elegant as possible, with their arms cradled, as a figure of style. The center bridge thus provides the movement’s axis of symmetry, responding to the curve on the barrel and balance bridge. Curves and shapes, simple and direct.

Regulating organ

It's one of the elements I wanted to be the most characteristic of my movement. The heart of the watch had to create a bridge between the past and the present. That's why I took my inspiration from the specific shape of marine chronometer balances, with their four inertia blocks and adjusting screws. Its dimensions would correspond to what used to be the norm, i.e. occupy about the same space as the movement’s radius. To enable collectors to check the accuracy of their watches, I fitted the movement with a stop lever that passes through the movement and halts the regulating organ when setting the time. The finesse and length of this spring is a delight of mechanical lightness.

The system for holding the stud is a small mechanism that enables the reference point to be finely adjusted simply by turning an eccentric on the balance bridge. The adjustable stud holder and its swan-neck spring are made of steel and chamfered, with the top surfaces mirror-polished.

Beneath the heart of the watch are two personalized plates, hand-engraved with "Tree of Life", "L'Essentiel", and "Creare Durare".

"Moustache" lever

Balanced or counterpoised lever were regularly used on pocket watches due to the large size of their escapement lines. The lever was by definition bigger, and therefore more unbalanced. To correct this defect, the old watchmakers balanced the anchor by adding a counterweight in order to have the center of gravity on the anchor tigeron.

In fine watches, this type of anchor exacted a level of filing and polishing indicative of the care given even to the smallest details of execution.

I decided to incorporate this type of anchor for reasons of aesthetics and craftsmanship and opted for the mustache-shaped lever. It's both surprising and pleasing to see a ‘moustache’ anchor in action, and quite rare these days.

Spécifications techniques & esthétiques

Exterior

  • Components: 45
  • Case: Stainless steel, 3-piece case design, pressed case back Horizontal satin-finished case band with polished lugs, polished bezel and case back. Sapphire crystal, double-sided antireflective coating.
  • Case dimensions: 39mm
  • Height: 10.37mm
  • Water resistance: 3 ATM (30 meters, 100 FT)
  • Crown: Stainless steel, polished with engraved logo.
  • Strap: Black alligator, hand-stitched; inner in red alligator, small scales. 
  • Buckle: Stainless steel, hand-engraved logo, satin-finished top and bottom. Polished edges, hammered pin support. Polished pin, flanks satin-finished.

Display

  • Central dial: Maillechort (nickel, copper, and zinc alloy), hand-turned guilloché decoration; hand-engraved HS logo; hand-chamfered peripher. Flanks straight-grained, underside circular-grained.
  • Hour and seconds aperture: Steel, hardened-tempered and whitened by hand, hooped. Bevels and countersinks, hand-made and polished; flanks straight-grained.
  • Minute and seconds dial: White Grand Feu enamel, glossy black transfers. Flanks straight-grained, underside circular-grained. 
  • Minute and seconds hands : Steel, hardened-tempered and whitened by hand, flame-blued. Balanced; bevels and countersinks, hand-made and polished. Cannons, countersunk and polished.
  • Philosophical disc: Aventurine, mounted on notched crown. Gold plating for the Sun; silver plating for the Moon. Latin philosophical inscription: on the Sun, Hodie Nunc (Today Now); and on the moon, Amor & Gratia (Love & Gratitude).

Movement

  • Name: Caliber HS-01
  • Diameter: 34.60mm / 15½ ‘lignes’
  • Height: 7.38mm (including switch)
  • Number of components: 189
  • Complications: 2/ 24-hour philosopher's disk, stop seconds lever
  • Watchmaking specialties: 3/ Swiss lever escapement, counterpoised ‘moustache’ lever. Wolf’s teeth on ratchet and crown wheel. Guillaume-type ‘Homage’ balance wheel.
  • Number of jewels: 27
  • Power reserve: 60 hours
  • Frequency: 18’000 vibrations/hour

Technical components

  • Barrel: Quick-rotating, fixed flange; drum circular-grained, flanks straight-grained, interior circular-grained, lid circular-grained.
  • Ratchet and crown wheel: Wolf’s-tooth profile, topside sunray-finished, underside circular-grained; teeth hand-polished. 
  • Click-spring: Mirror-polished, hand-chamfered; screws countersunk, flanks straight-grained, circular-grained.
  • Wheels: 3N gold-plated ARCAP spokes; polished bevels; circular-grained; diamond-coated inside and out, straight-fluted.
  • Pinions: Traditionally manufactured; hardened-tempered and whitened by hand. Leaves and shafts, hand-polished, burnished.
  • Escapement: Swiss lever escapement; ‘moustache’ lever, mirror-polished, chamfered, flanks straight-grained. Escape wheel, mirror-polished. Endstone plate, mirror-polished. Bevels and moldings, hand-made and polished.
  • Pendulum: Guillaume-type (diameter 14.10mm). Variable inertia with adjusting weights.
  • Spiral: Phillips terminal curve. Stud holder, eccentric fine-adjustment.

Ebauches and bridges

  • Plate: Maillechort (nickel, copper, and zinc alloy), hand-engraved with 'Hervé Schlüchter' and 'Bienne’. 'Work No.', hand-engraved under the regulating organ. Circular-graining, top and bottom; recesses circular-grained, flanks straight-grained. Countersinks hand-turned and polished; flanks straight-grained.
  • Barrel, escapement and balance bridges: Maillechort (nickel, copper, and zinc alloy). Côtes de Genève or graining; underside circular-grained, chamfered. Countersinks hand-turned and polished; flanks straight-grained.
  • Center wheel, intermediate wheel, and seconds wheel bridges: Steel, hardened-tempered and whitened by hand, mirror-polished, chamfered, balanced. Countersinks hand-turned and polished; flanks straight-grained. Olive-domed jewels, set in 18K yellow gold chatons.
  • Anchor bridge: Maillechort (nickel, copper, and zinc alloy); underside straight-grained, chamfered. Countersinks hand-turned and polished; flanks straight-grained. Studs and underside circular-grained.
  • Plaquettes « Ailes d’ange » sous le balancier:

    Maillechort gravé main « Tree of Life », « L’Essentiel » et « Creare Durare ». Ecritures dorées 3N, cerclées, anglées. Moulures réalisées et polies main, perlé dessous.

  • Serial No. plate: 18K yellow gold, number hand-engraved, circular-grained, chamfered. Countersinks, hand-turned and polished; underside circular-grained.