Engineers and Mechanics Encyclopedia 1839: Railways: Charles Dance and Joshua Field

In our notice of Sir Charles Dance's carriage at page 173, we alluded to a boiler that was introduced into it in 1833. It is thus described by Mr. Gordon:-

"In 1833 a patent was obtained by Sir Charles Dance and Mr. Field, for an arrangement of tubes, which was considered superior to Gurney's. The bent pipes of Gurney's boiler will be discovered upon reference to the figure, and the whole will be found to consist of two of Gurney's boilers, but without the separators backed into each other. The coil-pipe J is here used, conveying the cold, or rather the cooler, water from the tank to E, from whence it rises to C, becoming heated in its passage upwards. Water pumped into D also ascends to B in the same manner; and at B and C the steam from the two distinct boilers E-C and D-B, rises up to F and G, and is drawn off to the engines, whilst the cooler particles descend in the vertical pipes below C and B, to pass again over the fire with other water, going in the upward direction.

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