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Animations of mechanical models

The University Museum and the Laboratory of Human Systems, Department of Systems Science, are now carrying forward to construct animating models in order to illustrate the movements of machine mechanism models. Followings are the examples.
(1) Bevel gear
(2) Slider crank
(3) Oldham's coupling
(4) Slotted crank
(5) Three parallel cranks and coupling rods
(6) Multiple trammel gear (1)
(7) Multiple trammel gear (2)
(8) Approximate linear motion (1)
(9) Quick return motion
(10) Eve's pump
(11) Coaxial inverse rotary motion using spur gears
(12) Fabry's ventilator
(13) Hooke's joint
(14) Approximate linear motion (2)
(15) Linear motion using a planet gear
(16) Positive motion cam
(17) Mechanism using friction
(--> Reference)

The authors appreciate that this research is supported by the Grant-in-Aid for Scientific Research of Ministry of Education, Culture, Sports, Science and Technology, 11878026, 1999-2000.

Mechanisms of KARAKURI dolls

Japan imported modern machine industrial technology from Europe and America during the Meiji era (1868-1912), and the education models such as the above regarded as examples. However, in Japan there were KARAKURI dolls, which moved automatically using a weight (mercury) or a spring, in the Edo era (1603-1868), and they were performed to and won a favorable reception with the population. What we should pay attention to is that essentially the same mechanisms as described above were included in those KARAKURI dolls.
Some KARAKURI dolls were restored recently, and are demonstrated at museums. Here, the inner mechanisms, which realizes the complicated movements of a tea serving doll and a DANGAERI doll, will be explained.

--> Mechanism of a tea serving doll
--> Mechanism of a DANGAERI doll