Specification of Moses Poole : tubular steam boilers.

  • Poole, Moses.
Date:
1854
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Moses Poole : tubular steam boilers. Source: Wellcome Collection.

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    - A.D. 1829.—N° 5815. Poole s Improvements in the Apparatus for Raising or Generating Steam, <^c. munication witli the atmosphere being cut off. The area of the discharging tubes in the chimney must be in proportion to the quantity and pressure of the steam in the vessel (M) and the intensity of draft required. As the quantity of steam discharged in the vessel (M) may be very considerable at certain tinges, which 5 would produce a strong pressure against the pistons, as well as cause too great intensity of draft, a safety valve (Z, Fig- 2), must be placed on it, fiom which a waste pipe (o) must be carried to the chimney or any other convenient situation of sufficient capacity to admit of an easy discharge of all such steam from the engines. This valve by the spring (4) on it, may be fixed to any 10 pressure, and which will regulate the force of the discharge through the draft tubes; for should the pressure in the vessel (M) get above that force, the valve will lift and allow the escape of the overplus of steam through the waste pipe. The degree of draft may thus be regulated at pleasure, for it will always be in proportion to the force of discharge. The steam from high piessuie 15 engines is frequently thrown into the flues and chimneys, but nevei undei pressure or in a continued current, so as to produce a draft, and the effect is that it rather injures the fire. Every other part of the apparatus connected with the locomotive engine not described, is generally known by engineeis, and may be seen by reference to the Drawings accompanying this. 20 In witness whereof, I, the said Moses Poole, have hereunto set my hand and seal, party hereto, the Eithgth day of January, in the year of our Lord One thousand eight hundred and thirty. MOSES (l.s.) POOLE. AND BE IT REMEMBERED, that on the Eighth day of January, in the 25 year of our Lord 1830, the aforesaid Moses Poole 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. 30 Inrolled the Eighth day of January, in the year of our Lord One thousand eight hundred and thirty. LONDON: Printed by George Edward Eyre and William Spottiswoode, Printers to the Queen s most Excellent Majesty. 1854. Farrer