The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 365
w, which with straight teethcleanses the grates underneath. To obtain forward, backward, andside movements the apparatus is suspended by means of a lever, andcan be moved in any direction. The Minister of Marine has directedthis to be tried in the navy. Boilers and Safety Valves.M. Durenne… … M. Bourdon exhibited a water level indicator, of various forms, withan alarm whistle, one of them is shown in the annexed engraving; itconsists of a small column mounted on the top of the boiler with a flatcircular box of cast iron. In the interior is a lever, to the extremityof which is hooked a…
Architecture · Civil engineering · Science
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