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A close-up of the hole above the plunger through which the pumped water exits and rises to the spout. |
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A small clear glass plug seats inside the center of the plunger, forcing the water pumped from the lower container up to the spout. |
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The lower part of the plunger with most of the string removed. The string seems to be a modern replacement for the original packing material. |
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A layer of what looks a lot like grass beneath the string. |
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The lower valve is a purple glass plug partially filled with mercury. The plug is ground down to fit the inside of the glass tube. |
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"W. F. Rohrbech New York" |
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