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http://dx.doi.org/10.5303/PKAS.2019.34.3.031

OPERATIONAL MODEL OF TIME-KEEPING SYSTEMS OF HEUMGYEONGGAK-NU  

KIM, SANG HYUK (Korea Astronomy and Space Science Institute)
YUN, YONG-HYUN (National Science Museum)
MIHN, BYEONG-HEE (Korea Astronomy and Space Science Institute)
LEEM, BYONG GUEN (National Science Museum)
YOON, MYUNG KYOON (Keyscion)
LEEM, BYONG SI (Technology Art Company)
Publication Information
Publications of The Korean Astronomical Society / v.34, no.3, 2019 , pp. 31-40 More about this Journal
Abstract
We study the internal structure under the artificial mountain of Heumkyeonggak-nu, a Korean water-powered clock in the early Joseon dynasty. All the puppets on the artificial mountain are driven by the rotational force generated by the water wheel at their designated time. We design a model that work with three parts of the artificial mountain. At the upper part of the artificial mountain to the east, west, north and south, there are four puppets called the Four Mystical Animal Divinity and four ladies called the Jade Lady respectively. The former rotates a quarter every double hour and the latter rings the bell every hour. In the middle part of this mountain is the timekeeping platform with four puppets; the Timekeeping Official (Hour Jack), the Bell-, Drum-, and Gong-Warriors. The Hour Jack controls time with three warriors each hitting his own bell, drum, and gong, respectively. In the plain there are 12 Jade Lady puppets (the lower ladies) combined with 12 Oriental Animal Deity puppets. In his own time a lady doll pops out of the hole and her animal doll gets up. Two hours later, the animal deity lies down and his lady hides in the artificial plain. These puppets are regularly moved by the signal such as iron balls, bumps, levers, and so on. We can use balls and bumps to explain the concept of the Jujeon system. Iron balls were used to manipulate puppets of the timekeeping mechanism in Borugak-nu, another Korean water-powered clock in Joseon dynasty, which was developed earlier than Heumgyeonggak-nu. According to the North Korea's previous study (Choi, 1974), it is obvious that bumps were used in the internal structure of Heumgyeonggak-nu. In 1669, The armillary clock made by Song, I-young was also utilized bumps. Finally we presented mock-ups of three timekeeping systems.
Keywords
automatic water clock; Heumgyeonggak-nu; time system; Four-Mystical-Animal-Divinity wheel; time-keeping wheel; Twelve-Directional-Animal-Divinity wheel; bump; ball-signal distributing system; Jujeon;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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1 Choi S. J., Kim C. G., Shin J. R., et al., 1997, History of Joseon Technological Development Vol. 5, Science Encyclopedia Comprehensive Publisher (Pyongyang), pp. 292-293
2 Hanh Y. H. & Nam. M. H., 2008, Systems for Night-Watch Clepsydrae during Chosun Dynasty, The Journal of Korean Studies 143, 167
3 Hill, Donald R., 1974, The Book of Knowledge of Ingenious Mechanical Devices, originated from Kitab fi ma 'rifat al-hiyal al-handasiyya (1208) written by Ibn al-Razzaz aI-Jazari, D. Reidel Publishing Company (Dordrecht), pp. 15-206
4 Kim S. H. & Lee Y. S., 2013, An Analysis of Structure on Time Signal System of Honcheonsigye, PKAS, 28, 17
5 Kim S. H., Ham S. Y., & Lee Y. S., 2016, Model Design for Water Wheel Control System of Heumgyeonggaknu, JASS, 33, 55
6 Kim S. H., Lee Y. S., & Lee M. S., 2011, A Study on the Operation Mechanism of Ongnu, the Astronomical Clock in Sejong Era, JASS, 28, 79
7 Kim S. H., Lee Y. S., Lee M. S., & Ham S. Y., 2013, A study on the Internal Structure of Heumgyeonggaknu, JASS, 30, 113
8 Kim S. H., Yun Y. -H., Ham S. Y., Mihn B. -H., Ki H.-C., & Yoon M. -K., 2017, A study on an Analysis and Design of the Internal Structure of Heumgyeonggak-nu, JASS, 34, 171
9 Lee Y. S. & Kim S. H., 2012, Structure and Conceptual Design of a Water-Hammering-Type Honsang for Restoration, JASS, 29, 221
10 Mihn B. -H., Lee M. S., Choi Goeun, & Lee Ki-Won, 2016, Manufacturers Of Astronomical Instruments Invented During the Ganui-Dae Project In Joseon Dynasty, PKAS, 31, 77
11 Mihn B. -H., Choi Goeun, & Lee Y. S., 2017, Astronomical Instruments with Two Scales Drawn on Their Common Circumference of Rings in the Joseon Dynasty, JASS, 34, 45
12 Nam M. H., 2002, Jang Yeong-Shil and the Striking Clepsydra JAGYEONGNOO: Revival on the Time Measuring History of Chosun Period, Seoul National University Press (Seoul), pp. 181-192
13 Yun, Y. -H. & Ki, H. -C., 2017, The Historical Significance of King Sejongs Construction Heumgyeonggak by Focusing on the Structure of the Ong-nu, the Automatic Water Clock, Journal of Korean Classics 49, 37   DOI