Specification of Peter Davey : preparation of coal for fuel.

  • Davey, Peter.
Date:
1857
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Peter Davey : preparation of coal for fuel. Source: Wellcome Collection.

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    Davey's Improved Preparation of Coed for Puel. NOW KNOW YE, that in compliance with the said proviso, I, the said Peter Davey, do hereby describe and ascertain the nature of my said Inven¬ tion, and a manner in which I have performed the same, by the following description thereof, reference being had to the Drawings and Figures annexed {that is to say):— 5 My Invention doth consist in an improved preparation of coal for fuel, which I call gaseous coke, and which is made of very small coals mixed with coal tar (either in a pure state, which is the best, or combined with naphtha and those other ingredients with which it is generally found impregnated), and then cemented together by the application of heat in the form of large lumps 10 or cakes, for the purpose of fuel. The following is a mode which I have adopted for the manufacture of the gaseous coke by distillation or otherwise, separate from coal tar, the aqueous parts, and most of the naphtha :—Take about three quarts of the tar thus pre¬ pared and mix it well with about a bushel of the smallest Newcastle or Sunder- 15 land coals, in the same manner you would mix brick, earth, or. mortar ; press this mixture into moulds or pans, such as are herein-after described, and tread or ram it down into them. This being done, place the pans, with the mixture in them, in an air furnace, previously heated to three hundred and fifty degrees of Farrenheite’s thermometer. Let them remain in the furnace and exposed 20 to the before-mentioned degrees of heat for four successive hours, then let them be removed and suffered to cool gradually, when the mixture in each will be found one solid compact mass, and may be turned out of the moulds or pans, being then formed into what I call gaseous coke, and fit for the purposes of fuel. 25 Description of the Drawing. Fig. 1 represents a perspective view of the iron pan or mould, herein-before described. A, B, are two bars of iron, laid across the pan for the purpose of placing a second pan over it. When in the furnace, if the furnace be high enough, two, three, or more may be piled on one another in this way. Fig. 2 30 is a longitudinal section of the pan or mould ; Fig. 3 is a transverse section of the pan or mould. The pans or moulds are made of cast or wrought iron of about three-eighths of an inch thick, and are made larger at the top than at the bottom, in order more easily to disengage the coke from it when cold. Now, such an improved preparation of coal for the purposes of fuel as is 35 herein-before particularly described, and a manner of making, which is herein¬ before particularly set forth, and which said preparation I call gaseous coke, being entirely new and never before used for the purposes aforesaid in thes