Model of a Ventilator, anonymous, c. 1740 - c. 1800 demonstration model Model of a fan working as a double bladder ball. Part of the cover can be removed to show the inside. In the body, which has the shape of a circles segment at its point, a board moves back and forth, hinged in the tip. The plank is pulled with ropes on either side. Simple valves consisting of a wood -covered wooden flap on both sides leave the air in turns inside. If the air is compressed on one side, it is drained via a similar valve at the top to a round ventilation channel, one of which is mounted on each side. Netherla
Model of a Ventilator, anonymous, c. 1740 - c. 1800 demonstration model Model of a fan working as a double bladder ball. Part of the cover can be removed to show the inside. In the body, which has the shape of a circles segment at its point, a board moves back and forth, hinged in the tip. The plank is pulled with ropes on either side. Simple valves consisting of a wood -covered wooden flap on both sides leave the air in turns inside. If the air is compressed on one side, it is drained via a similar valve at the top to a round ventilation channel, one of which is mounted on each side. Netherlands wood (plant material). brass (alloy). chamois (animal material). rope
Size: 4504px × 4976px
Photo credit: © piemags/rmn / Alamy / Afripics
License: Licensed
Model Released: No
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