Page:Specification of William Alltoft Summers and Nathaniel Ogle - steam-engine and other boilers.pdf/8

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sides of the furnace; the front is supposed to be taken away, in order to shew the boiler or generator. h is the chimney. i, i, i, are bolts for screwing the tubes or pipes c, c, together. k is the feed pipe for supplying the boiler or generator with water. l is the steam pipe to convey the steam to the engine. m, m, m, are tubes or pipes to connect the tubes or pipes c, c, together. n is the ash pit. The water which is contained between the tubes or vessels a, a, a, may be pumped into the boiler or generator to any height at which it may be found most convenient, and a safety valve may be attached in the usual way. We wish it to be understood that we do not limit our claim of Invention to the precise forms exhibited in the Figures of the parts of which our boiler or generator is constructed, as the tubes or vessels may be elliptical or of any other convenient form which would answer the purpose; but we claim as our Invention, the placing an inner flue or tube for the escape of the heated air or gas arising from the fire inside a larger tube or vessel in an upright or perpendicular or vertical position, the said inner flue or tube running through inside of the larger tube or vessel and out at the top, the larger tube or vessel being also placed in an upright or perpendicular or vertical position.

W. A. SUMMERS. (L.S). NATHL OGLE (L.S).

AND BE IT REMEMBERED, that on the Sixteenth day of June, in the year of our Lord 1830, the aforesaid William Alltoft Summers and Nathaniel Ogle came before our said Lord the King in His Chancery, and acknowledged the Specification aforesaid, and all and everything therein contained and specified, in form above written. And also the Specification aforesaid was stamped according to the tenor of the Statute made for that purpose.