The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 132
eshafts of the upper mill-stones; and, in case it should be at anytime desirable to work only one of the upper stones, the other maybe disconnected. WALLERS PATENT COFFEE-POT. This invention consists of a vessel divided into two equal partsby a dished partition A, with the centre depressed and… … metal. Ascending from within a short space of the bottom of thelower chamber to within nearly .tbe top of the upper one, is atube E, passing through the centre of the partition and perfora1,edplate, and which tube is surmounted by a valve D. F is an ordi-nary spout communicating only with the lower…
Architecture · Civil engineering · Science
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