Model of an Upper Pump Box, Model of a pump piston for a square pump tube. It consists of two layers of leather sandwiched between wooden boards. The lower half is square, the upper half consists of two triangular valves, covered with copper on the inside. Between the valves is an iron bracket for fixing the pump rod or chain., anonymous, 1821, wood (plant material), brass (alloy), copper (metal), iron (metal), leather, h 21 cm × w 10.6 cm × d 2.2 cm
Keywords:
Model, Upper Pump Box, pump piston, square pump tube, consists, two layers, leather sandwiched, wooden boards, lower half, square, upper half consists, two triangular valves, covered, copper, inside, valves, iron bracket, fixing, pump rod, chain, 1821, wood, plant material, brass, alloy, metal, iron, leather
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