arrival of the Shechina, the Divine presence.

According to the kabbalists, the Shechina had to be retrieved from the seven levels of the firmament where it was hidden away on the day that Adam sinned in defiance of G-d. Now, as a reward for the devoted labor of the people of Israel in creating the Tabernacle, the Divine presence is finally going to be brought back down to earth.

The rabbis see the seven days of assembling and disassembling the Tabernacle as a parallel to the seven generations from Abraham to Moses who repaired the sinful actions of the earlier generations. The special effort required to erect and disassemble the Tabernacle seven times was necessary to atone for the peoples’ additional sinfulness with the Golden Calf.

Thus, on the eighth day,includes opposed pairs of rollers, each pair being received in one of the pockets, and elastic members each mounted between each opposed pair of rollers to bias the pair of rollers away from each other to standby positions where the rollers are engageable with a cylindrical surface formed on the inner periphery of the outer ring and cam surfaces formed on the outer periphery of the inner ring. When the inner ring rotates in one direction, one of each opposed pair of rollers engage the cylindrical surface and the cam surface, thereby transmitting the rotation of the inner ring to the outer ring.
This rotation transmission device further includes an electromagnetic clutch provided on the input shaft, which is provided with the inner ring, and is configured such that