086 Embedded Gears
Here is the shaft with the gear that rotated the eccentric wheel. It would have been mounted horizontally, like it is now. The shaft is 3 1/2-in in diameter and is 6-ft long. On the opposite side of the gear, a pulley would have been mounted. A belt would stretch between this pulley and the one on the old engine in the distance (a distance of about 33 feet). As the belt rotated the pulley, the gear rotated the eccentric wheel shaft, pulling and pushing the jack lines. When it was mounted, it looks like the larger two-disc circular structure on the middle of the shaft fit in the concrete structure in the upper left of the picture.
086 Embedded Gears
Here is the shaft with the gear that rotated the eccentric wheel. It would have been mounted horizontally, like it is now. The shaft is 3 1/2-in in diameter and is 6-ft long. On the opposite side of the gear, a pulley would have been mounted. A belt would stretch between this pulley and the one on the old engine in the distance (a distance of about 33 feet). As the belt rotated the pulley, the gear rotated the eccentric wheel shaft, pulling and pushing the jack lines. When it was mounted, it looks like the larger two-disc circular structure on the middle of the shaft fit in the concrete structure in the upper left of the picture.