Model of a Fan, Model of a fan operating as a double bellows. Part of the cover can be removed to show the inside. In the body, which has the shape of a circle segment at its point, a plank moves back and forth, hinged at the point. The board is pulled with ropes on either side. Simple valves consisting of a wooden flap covered with chamois leather let the air in in turns. When the air is compressed on one side, it is discharged via a similar valve at the top to a round ventilation duct, one of which is mounted on each side., anonymous, Netherlands, c. 1740 - c. 1800, wood (plant material), brass (alloy), chamois (animal material), rope, h 27 cm × w 35.9 cm × d 12.8 cm
Keywords:
Model, Fan, fan operating, double bellows, Part, cover, removed, inside, body, shape, circle segment, point, plank moves back, forth, hinged, board, pulled, ropes, side, Simple valves consisting, wooden flap covered, chamois leather let, air, turns, compressed, discharged via, valve, top, round ventilation duct, mounted, Netherlands, c, 1740, 1800, wood, plant material, brass, alloy, chamois, animal material, rope
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