ZENITH Cal.135 CHRONOMETRE 18KYG SOLD
The most popular and well-known of these is the Cal. 135 Chronometer movement.
こちらの個体は、135搭載機では数少ない、18金無垢ケースを採用しています。
The dial is white with electro-deposition coating. The minutes, 12.3.9 Arabic and multi-faceted wedge-cut indexes are lined up from the outer circumference. The gorgeous solid gold case is well-balanced with the cozy Arabic numerals.
OMEGA's 30mm caliber 30T2 is also famous for the same five vibrations.
The basic mechanism of the 30T2 is no different from that of ordinary hand-wound wristwatches, but the ZENITHCal.135 is special in terms of the arrangement of the gears (wheel train). We will focus on this rare and rarely seen movement and explain it, and introduce this one in good condition.
分解洗浄を行い、組み立てながら解説します。
こちらのリューズは、裏にパテント(特許)の刻印が見られます。
このような刻印は過去に経験がありません。
We will disassemble and clean the watch and explain it as we assemble it.
This crown has a PATENT engraving on the back.
We have never seen this kind of engraving in the past.
機械の特徴を解説します。
心臓部のテンプを非常に大きくしています。
慣性力が高く、外部からの振動の影響を少なくすることができます。
オメガ30T2（左）も一般的な時計の中ではかなり大きい方ですが
ZENITH135（右）比べるといかに大きいががわかります。
OMEGA11.73ｍｍ ZENITH12.77ｍｍ
The following is a description of the features of the machine.
The balance at the heart of the watch is very large.
It has high inertia and reduces the influence of external vibrations.
The OMEGA 30T2 (left) is also much larger than most watches, but
ZENITH135 (right) shows how large it is.
OMEGA11.73mm ZENITH12.77mm
機械の外径が同じなのに、なぜ大きいテンプを搭載することができたのか、
それは歯車の並びに関係しています。
通常機械の中心に分針のつく車を配置しますが、ZENITH135では
歯のない軸のみで細い為、テンプのスペースを邪魔しません。
また、ガンギ車はテンプの下に潜り込む配置です。
本来中心に来る2番車は中心からずらして配置しています。
Why was it possible to mount a larger balance when the outer diameter of the machine was the same?
It has something to do with the gear arrangement.
Normally, the wheel on which the minute hand is attached is placed in the center of the machine, but in the ZENITH135, only the shaft without teeth is used.
The ZENITH 135 has only a thin shaft without teeth, so it does not interfere with the space for the balance.
In addition, the escape wheel is placed under the balance.
The second wheel, which normally comes to the center, is placed off-center.
2番車の構造は文字盤側に飛び出す、時刻表示用の歯車（ツツカナ）を
備えています。時刻合わせの際は、この部分がスリップします。
The construction of the second wheel has a cannon pinion for the time display that protrudes from the dial side. This part slips when setting the time.
2番車に分針が付かない為、厄介な問題を起こします。
それは、2番車から分針の付く車までの、歯車同士の隙間によって、
分針がガタついて、正確な時刻が表示されなくなることです。
The minute hand is not attached to the center wheel and pinion, which can cause a troublesome problem.
The gap between the gears from the center wheel and pinion to the wheel on which the minute hand is attached causes the minute hand to rattle, resulting in inaccurate time display.
この分針ぐらつき問題の解消のために、考案されたのが
日の裏車をバネで押し付けることで、隙間を無くし、
分針を逆回転の方向へ押す仕組みです。
たったバネ1本だけですが、これで問題が解決します。
この仕組みは、2番車を中心に持たない機械の、
有効な解決策となり、多くのメーカーで採用されています。
To solve this minute hand wobble problem, we devised the The back wheel of the day is pressed against the back wheel of the day by a spring to eliminate the gap between them, the minute hand in the opposite direction of rotation.
Although only a single spring is used, this solves the problem.
This mechanism is an effective solution for machines that do not have a center wheel and pinion in the center, This system has been adopted by many manufacturers as an effective solution for machines that do not have a second car in the center.
そして、時針の付く筒車も同様にバネで隙間を減らします。
遊びが少なくなるよう歯が小さいのも特徴です。
The barrel wheel to which the hour hand is attached is similarly spring-loaded to reduce the gap between the hour and minute hands.
The teeth are also small to reduce the amount of play.
もうひとつ特徴的な構造は、大きなテンプを駆動させるため、
強い主ぜんまいを使用している点です。
幅がとても広く実測で2.00ｍｍ
厚みは若干厚めのの0.125ｍｍ
これは、ともすれば懐中時計に匹敵するサイズ感です。
参考までに、オメガの30T2では幅は1.500ｍｍです。
Another distinctive feature of the construction is the use of a strong mainspring to drive the large balance,
The main spring is very wide, measuring 2.00mm in width.
It is very wide, measuring 2.00 mm (actual measurement).
The thickness is slightly thicker at 0.125mm.
This size is comparable to that of a pocket watch.
For reference, OMEGA's 30T2 has a width of 1.500mm.
大きなゼンマイは、手でゼンマイを巻き上げるのが重いです。
場合によっては、反発力で歯車を壊しかねません。
その為大きな力の伝達に適した工夫がなされています。
OMEGAでは丸穴車(左)に直角のフェース車(冠歯車)と
平歯車を組み合わせ、入力と出力の歯を分ける事で最適化しています。
腕時計でも、時折見られる機構です。
ZENITHで採用されたのが、はすば歯車を用いたキチ車(右)です。
斜めにカットされた歯の形状は、強い駆動力をスムーズに
伝達するのに最適で、自動車などに多く用いられます。
時計では一部の懐中時計に見られる珍しい構造です。
A large spring is heavy to wind up by hand.
In some cases, the repulsive force may break the gears.
For this reason, a device suitable for transmitting large force has been devised.
OMEGA uses a combination of a round hole wheel (left), a right-angle face wheel (crown gear), and a spur gear to separate the input and output teeth. The combination of a right-angled face wheel (crown gear) and a spur gear is optimized by separating the input and output teeth.
This mechanism is sometimes seen in wristwatches.
ZENITH uses a helical gear wheel (right).
The shape of the teeth, which are cut at an angle, is ideal for smoothly transmitting strong driving force. The shape of the teeth, which are cut at an angle, is ideal for smoothly transmitting strong driving force.
In watches, this is a rare structure found in some pocket watches.
動作の様子では、隙間から斜めの歯車が見られます。
In operation, diagonal gears can be seen through the gap.
装置が用いられています。
In order to precisely adjust the balance (advance and delay), a device called a "fine adjustment slow and fast" is used.
As shown by the blue arrow, a gauge wheel with a cutout is turned.
A pin in a spiral-shaped groove is pushed out to slightly move the slow and fast hands.
By combining two types of the lever principle, the advance-delay can be finely adjusted.
ヒゲゼンマイは、いわゆるブレゲヒゲを採用しています。
外側に特殊なカーブ（外端カーブ）を備えることで、ヒゲゼンマイが
偏りが少なく伸縮するようになります。
The balance spring is a so-called Breguet spring.
A special curve on the outside (outer end curve) allows the balance spring the balance spring to expand and contract with less bias.
精度も申し分ありません。
Accuracy is also perfect.
