Specification of Maurice de Jongh : application of coke ovens to boilers for the generation of steam, &c.

  • De Jongh, Maurice.
Date:
1854
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Maurice de Jongh : application of coke ovens to boilers for the generation of steam, &c. Source: Wellcome Collection.

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    De Jongh's Improvements in the Application of Coke Ovens to Boilers, c$c. High Court of Chancery within four calendar months next and immediately after the date of the said Letters Patent, then the said Letters Patent, and all liberties and advantages whatsoever thereby granted, should utterly cease, determine, and become void, as in and by the said Letters Patent, relation being thereunto had, may more fully and at large appear. 5 NOW KNOW YE, that in compliance with the said proviso, I, the said Maurice De Jongh, do hereby declare that the nature of my said Invention, and the manner of performing the same, are particularly described and ascer¬ tained by the following Specification, and the Plates hereunto annexed, that is to say:— . 10 For a boiler of about fourteen feet long and six feet wide from seating to seating, I build a circular wall (leaving an opening or doorway of about three feet two inches wide) round a space measuring about eight feet in diameter, see Figure 1, Plate I., hereunto annexed, which wall is to rise about one foot six inches perpendicular above the floor inside the circle, which floor is made 15 of common bricks set edgeways, and about five inches higher at the back than at the front of the oven, forming a regular inclined plane, to facilitate the discharg¬ ing of the coke and make the coal burn more regular, as the depth of the coal should be less at the back than near the door, the bricks of the wall pointing lengthways to the centre; upon this wall an arch or crown is raised, which 20 would rise two feet six inches more if it completely closed the oven in, and which would thus measure four feet high in the centre inside; but the crown is not to be quite closed at the top, but leave a circular opening in the centre of about two feet diameter, which opening I denominate a crater ; about six inches below that crater, in the crown, is also an opening of about twenty-five square inches, left 25 for a flue to run to and communicate with the chimney, and is best on that side which is nearest the chimney. The doorway or oven mouth is lengthened forward about two feet three inches at the bottom, and the sides thereof are built up perpendicular, about two feet, and then covered in with an arch, about two feet six inches high in the centre from the ground, and intersected with the 30 crown of the oven: the said oven is inclosed by four sides of common bricks or stone, about eighteen to twenty inches thick and about twenty feet long, see Figure 1, Plate I., hereunto annexed. The oven itself, doorway, and flue to the chimney, must be of good fire bricks or other suitable materials, shaped for the purpose, firmly put together with fire clay, all of which is understood by 35 people who are in the habit of building ovens. The spaces between the out¬ ward wall and the oven must be firmly filled up and made solid with hard rubbish or such other materials as can best be procured, to the end of strengthen¬ ing the building and excluding the outward air from the inside of the oven as