{"id":12873,"date":"2021-12-01T01:35:01","date_gmt":"2021-12-01T00:35:01","guid":{"rendered":"https:\/\/swiss-watch-passport.ch\/la-sphere-temporelle-deric-coudray\/"},"modified":"2021-12-01T10:43:18","modified_gmt":"2021-12-01T09:43:18","slug":"eric-coudrays-time-sphere","status":"publish","type":"post","link":"https:\/\/swiss-watch-passport.ch\/en\/eric-coudrays-time-sphere\/","title":{"rendered":"Eric Coudray’s time sphere"},"content":{"rendered":"

A talented watch designer, Eric Coudray practises his art at Tec-Group in Vallorbe. He has named his triaxial tourbillon Spherillon in order to simply define its main technical specificity. Proven efficiency!<\/strong><\/p>\n

By Vincent Daveau, watchmaker & journalist, historian<\/em>
\nTo be read on the Swiss Watch Journal JSH\u00ae –\u00a0June 2021 Issue<\/a><\/i>
\nInsta SWP<\/a> | <\/i>Insta JSH\u00ae<\/a> | <\/i>Facebook<\/a> | <\/i>Twitter<\/a> | <\/i>Linkedin<\/a><\/p>\n<\/div><\/div>

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Complicated mechanism of the Spherillon invented by the Ga\u00efa Award watchmaker Eric Coudray, for the Purnell brand<\/div><\/div><\/div>
<\/div><\/div>

Giving inventions names that describe their main characteristics is a pragmatic approach that has been part of watchmaking logic since its origins.<\/p>\n

The importance of defining terms<\/strong><\/p>\n

In 1801, Abraham-Louis Breguet named his regularly rotating cage “tourbillon” to cancel out any equilibrium defects in the regulating organ enclosed within, because this component seemed to whirl once the watch was running. As Eric Coudray, the creator of the Gyrotourbillon for Jaeger-LeCoultre, said, this spherical regulating organ should never have been given such a name, because the amateurs who have seen it, intellectually assimilate this bi-axial tourbillon regulator to a gyroscope. However, this is not the case. To avoid confusion, this genius designer has therefore chosen to name his new invention “Spherillon”. It is a contraction in French of the words “sphere” and “tourbillon”.<\/p>\n<\/div><\/div>

For him, things are clear: his three-axis tourbillon, in which he has installed a regulating group with a Potter escapement (anchor wheel with inverted teeth), must allow the cage containing the balance wheel to rotate in just 8 seconds. This device, already used by Franck Muller in 2012, is used again here to guarantee both an original construction and optimised operation.<\/p>\n

Technical and team challenge<\/strong><\/p>\n

As Eric Coudray points out, the initial idea behind the Spherion was to design a new type of multi-axis controller on paper, as one would do with an exercise. But Arnaud Faivre, the founder of Tec Group, sold the concept to Purnell and MB&F and it was necessary to move from the idea to the finished product. The creator confides: “I have to admit that this rather original escapement caused us a few problems because we had to find the right efficiency and the optimal rotation speed to transmit enough energy to the balance…”<\/em><\/p>\n<\/div><\/div><\/div><\/div><\/div>

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The inventive and brilliant watchmaker Eric Coudray, inventor and conceptor within TEC Ebauches, a group founded by Arnaud Faivre | Photo \u00a9Jerome-Saillard<\/div><\/div><\/div><\/div><\/div><\/div><\/div>
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\n

… but the watchmakers impressed me and managed to find the best balance for this three-axis tourbillon cage”.<\/em><\/strong><\/p>\n<\/blockquote>\n<\/div><\/div>

<\/div><\/div>

Au final, la pr\u00e9cision est tr\u00e8s bonne et la compensation excellente, car l\u2019organe r\u00e9glant d\u00e9crit bien une sph\u00e8re \u00e0 la fin d\u2019une r\u00e9volution compl\u00e8te de l\u2019organe. C\u2019est la condition sine-qua non pour qu\u2019un tourbillon ait un sens sur une montre-bracelet et produise les m\u00eames effets positifs qu\u2019un tourbillon classique mont\u00e9 dans une montre de poche.<\/p>\n

In the end, the precision is very good and the compensation excellent, because the regulating organ describes a sphere at the end of a complete revolution of the organ. This is the prerequisite for a tourbillon to make sense on a wristwatch and produce the same positive effects as a classic tourbillon mounted in a pocket watch.<\/p>\n

And Eric Coudray concludes: “If the pivots of the balance axis draw a perfect sphere in space when the organ containing it is in motion, the latter must bear the name of the shape it produces in order to allow amateurs to better understand the kinematics of this marvel of meticulousness.\u00a0Really, why make it complicated when you can make it simple. So I called this body the Spherillon because it makes everything clear.<\/em>” That’s it, Mr Coudray!<\/p>\n<\/div><\/div>

\"\"<\/div>
On the workbenches of TEC Ebauches in Vallorbe, the Spherillon invented by Eric Coudray is being assembled. Photo \u00a9Jerome-Saillard<\/div><\/div><\/div>
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By Vincent Daveau, watchmaker & journalist, historian To be read on the Swiss Watch Journal JSH\u00ae –\u00a0June 2021 Issue Insta SWP | Insta JSH\u00ae...","protected":false},"author":2,"featured_media":12854,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[3565,4133,3602,3601,3594,3571],"tags":[4529,4582,3638,3640,3642,4573,3644,3992,3645,3646,3649,3650,4583,3651,4584,4576,3653,3654,4578,3655,3657,3658],"class_list":["post-12873","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-1010-10h10-10past10","category-1st-en","category-gaia-awards","category-jsh-print","category-models-collections","category-movement","tag-breguet-en","tag-cecil-purnell-en","tag-cotraitants-en","tag-editorinchief-en","tag-fournisseurs-en","tag-gyrotourbillon-en","tag-horlogerie-en","tag-jaeger-lecoultre-en","tag-journalsuissehorlogerie-en","tag-jsh1876-en","tag-ppdc-en","tag-prowatch-en","tag-purnell-en","tag-rolex-en","tag-spherilon-en","tag-spherion-en","tag-swisswatchpassport-en","tag-tagpress41-en","tag-tec-group-en","tag-therightplace2be-en","tag-watchcafe-en","tag-watchmaking-en"],"acf":[],"yoast_head":"\nEric Coudray's time sphere - Watch Passports by JSH\u00ae<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/swiss-watch-passport.ch\/en\/eric-coudrays-time-sphere\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Eric Coudray's time sphere - Watch Passports by JSH\u00ae\" \/>\n<meta property=\"og:url\" content=\"https:\/\/swiss-watch-passport.ch\/en\/eric-coudrays-time-sphere\/\" \/>\n<meta property=\"og:site_name\" content=\"Watch Passports by JSH\u00ae\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/joel.grandjean\" \/>\n<meta property=\"article:published_time\" content=\"2021-12-01T00:35:01+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-12-01T09:43:18+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/swiss-watch-passport.ch\/wp-content\/uploads\/2021\/12\/01a_JSH-Swiss-Watch-Passport-Eric-Coudray_BW_TG_JS_6_LR-R.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1267\" \/>\n\t<meta property=\"og:image:height\" content=\"897\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"\u270d Joel A. 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Grandjean","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/ef4a158da8673a24dc02c72afb2fd8d98ab544725d60023ed25351e2f197e012?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/ef4a158da8673a24dc02c72afb2fd8d98ab544725d60023ed25351e2f197e012?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/ef4a158da8673a24dc02c72afb2fd8d98ab544725d60023ed25351e2f197e012?s=96&d=mm&r=g","caption":"\u270d Joel A. Grandjean"},"description":"Chief editor & publisher of the international watch magazine \"Swiss Watch Passport\u00ae (by JSH\u00ae)\" and of the Journal Suisse d'Horlogerie JSH\u00ae (the oldest Swiss Watch Journal founded in 1876). Member of Impressum, PressTourim and Club Suisse de la Presse, this Ivory Coast-born Swiss, descendant of a family of watchmakers, co-founded the magazines Montres Passion & Uhren Welt at Ringier in 1993 with Kenan Tegin, as well as the Prix Montre de l'Ann\u00e9e. Founded in 2005, his press agency 1876 News (formerly T\u00e0G Press +41T) contributes to some twenty media through a network of around ten journalists or experts. These include Journal Suisse d'Horlogerie (2008-2014), Heure Suisse\/Schweiz and Ann\u00e9e Horlog\u00e8re, F\/D\/E (2011-2014), Watchonista.com (2013-2019). In 2019, he founded and chaired \"JSH Archives & Patrimoine\" to relaunch the Swiss watchmaking journal JSH. Then in 2021, he built on his very first editorial venture, the \"bloghorloger.ch\" established on the web in 2003, to come back online with the Swiss Watch Passport\u00ae (by JSH\u00ae). Jo\u00ebl A. Grandjean is a member of the SSC, the Swiss Society of Chronometry, and of the jury of the Prix Ga\u00efa, aka the \"Nobel of watchmaking\" awarded since 1992 by the MIH, Le Mus\u00e9e International de l'Horlogerie in La Chaux-de-Fonds","sameAs":["https:\/\/grandjean.watch","https:\/\/www.facebook.com\/joel.grandjean","https:\/\/www.instagram.com\/grandjean.grammson\/","https:\/\/www.linkedin.com\/in\/joel-a-grandjean-\u270d-5524357\/","https:\/\/x.com\/https:\/\/x.com\/tagpress","https:\/\/www.youtube.com\/@joela.grandjeanprowatchpre906"],"url":"https:\/\/swiss-watch-passport.ch\/en\/author\/joel\/"}]}},"_links":{"self":[{"href":"https:\/\/swiss-watch-passport.ch\/en\/wp-json\/wp\/v2\/posts\/12873","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/swiss-watch-passport.ch\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/swiss-watch-passport.ch\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/swiss-watch-passport.ch\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/swiss-watch-passport.ch\/en\/wp-json\/wp\/v2\/comments?post=12873"}],"version-history":[{"count":0,"href":"https:\/\/swiss-watch-passport.ch\/en\/wp-json\/wp\/v2\/posts\/12873\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/swiss-watch-passport.ch\/en\/wp-json\/wp\/v2\/media\/12854"}],"wp:attachment":[{"href":"https:\/\/swiss-watch-passport.ch\/en\/wp-json\/wp\/v2\/media?parent=12873"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swiss-watch-passport.ch\/en\/wp-json\/wp\/v2\/categories?post=12873"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swiss-watch-passport.ch\/en\/wp-json\/wp\/v2\/tags?post=12873"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}