Specification of James Robertson : furnaces, &c.

  • Robertson, James.
Date:
1858
Catalogue details

Licence: Public Domain Mark

Credit: Specification of James Robertson : furnaces, &c. Source: Wellcome Collection.

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    Specification. jRobertsons Impts. in Furnaces, and in the Consumption or Prevention of SmoJce. between the back edge of a large horizontal slab of fire-clay or hot plate and the front of the back bridge ; this slab or hot plate is laid upon the brick structure between the bridges, forming the top of it; and there is also a hori¬ zontal passage directly beneath it, to allow heated currents to pass in beneath it directly from the top of the grate bars, and thus meet the entering air from 5 the ash-pit at the upper discharge end of the inclined air duct. The effect of this arrangement is that the air supplied from the ash-pit becomes highly heated, and mingling with the unconsumed gases from the furnace as they pass over the low bridge, effectual combustion is secured as they pass over the high bridge. JO LONDON: Printed by George Edward Eyre and William Spottiswoode,