Thursday, December 20, 2012

week 2: The evolution of mechanical clock


Karakuri is a doll and the model of a Japanese traditional machine device, machinery. In addition, it was old and might call a raree show "a mechanism" for short. Originally the works are speech to express overall machine, but often use it when they control it in the present age and point to the Japanese traditional machinery with entertainment characteristics including the doll. English Karakuri means a Japanese mechanism doll.
It is the word "Karakuri clock" pointing at incorporating a machine in a clock judging from the etymology, but is guessed when "Karakuri" comes to point to the doll of the machine device when the clock which is incorporated controled and came to call it with a clock.

It is said to mechanical clocks having come over to Japan for the first time that Spanish propagator Francisco XavierSaint(フランシスコ・ザビエル) gave a clock to Yoshitaka Ouchi in 1,551. With the existing thing, "the table clock" which Ieyasu Tokugawa was given for (Keicho era 17 years) in 1612 by then Spanish king Philip III is saved in Kuno mountain Toshogu of Shizuoka-shi. The record that some propagators came over to Japan and gave to a clock was left, but the oldest clock in Japan was a clock made in Spain sent to Ieyasu Tokugawa as thanks in 1611 by Don Lewis de Velasco who is the Mexico governor-general because there were only a few recording about clocks which come Japan at that time.

Like this, mechanical clocks -wadokei- was invented which included original improvement and device to adopt Japanese climate and custom with imitating a machine clock brought from Europe. In other words it was propagators to have instructed the making of clock. And it is recorded when a person called Sukezaemon Tsuda of Owari made the first clock at last. As for such horologer, it became horologer under contract to daimyos, and, as for the clock, it became like the art industrial art object which took in the hobby of the daimyo. In addition, it developed as the clock which only Japan had in the world corresponding to the unsettled time rules that were a system at that time. Such a clock is called wadokei, and the mannendokei which Hisashige Tanaka (also known as mechanism Giuemon) made at the end of the Edo era is a masterpiece. It is a main reason that Japan was not able to interchange with Europe because of a policy of seclusion by Iemitsu Tokugawa for 300 years after that. There are methods to exchange a version that change the memory of a method and the clockface to change the driving speed of the machine into as various laborers who were devised to support the uncertainty time rules into, the time every season and knows that wisdom and the technique of then horologer developed the Japanese clocks.

Because of the change that unfixed time method to fixed time method and the import of American  large wall clocks called "Bonbon", wadokei finished the mission. Wadokei lost utility but it is made for some wadokei-lovers still now.


Thursday, December 13, 2012

week 1: History


The technique of "Karakuri" is thought to have had possibilities to come since the age of a beginning of interchange with Mainland China and the Korean Peninsula. South-pointing chariot told to have given to the Emperor Tenji it in the seventh century written down in the Chronicle of Japan is Japan and is the record of the work of the oldest mechanism. When people made it after nine years, there is it. South-pointing chariot means " a car directs the south", and the hermit who put it together to a thing of a wheel when a car comes back through the direction, and stands on a car changes a direction, and hands of the hermit image always point to the south. With the thing which comes out to three will, in the case of a fight, it is used for the direction confirmation on the day when fog is dark.

It is the Muromachi era afterwards finished festival car works and that a room mechanism was born. The Western advanced technology was conveyed in those days when European medieval culture was brought by a Portuguese ship. The machanical clock is one. The clock which automatically informs time exactly will be what was invited to with surprise serious then. These have a big influence on a Japanese craftsman technology. However, in those days’ Karakuri was only some noble.In the times of the peace of mind called Edo era, and the mechanism develops development by a humorous idea and maneuver with the best of the Edo craftsman.

When technology of the Karakuri-clock had adopted in a Ningyo-joururi (it means puppet ballad drama), and Oumi Takeda who was machine horologer of genius comes to stage it in each place around Osaka, in a festival car mechanism handled till then by manipulating the wires, spring power and a gear are taken in and change into force and a thing with the activeness. In addition, it was an event to let the consciousness of people greatly undergo a complete change that the doll which automatically worked was born. The float mechanism that was an Oriental technique and the encounter of the Western machine clock brought about a new Japanese technique.

In the times when various technical books had begun to be published, the book called "Karakuri-zui(it means blueprint)" which is written down a principle and a figure of the movement of this mechanism making came to be published. This is the first trial that a craftsman technology initiated in absolute secrecy was available to the public till then. Karakuri causes the interest of many people from the samurai family to a merchant, and, with it, a new works technology is born in each place.

Karakuri-doll is gathered most advanced technologies of Edo. It is made of a spring, mercury, sand for power. And gravity is managed well to control movement. In addition, disassembly and assembly is done again and again freely without using a metal screw and nail. Production needs not only knowledge but also delicate technics, so transmission from father to son was difficult, and a craftsman has been cut off. It is rare that a then thing is left, and the thing that mechanism is not broken even if it almost exist. That is why it is called "the doll of the illusion". (551words)