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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    Be Jongh's Improvements in the Application of Coke Ovens to Boilers, <fyc. unto annexed represent one of these bricks or tiles, all the sides at right angles, and let a, b, c, and d, be destined for the sides of the compartments 5 and 2, lettered in the same way. Then I first bevel the two sides b and d both alike, and so as to make the brick or tile narrower at the top side from b to d than the bottom side; I then bevel the side c, and so as to make the bottom shorter 5 than the top. I call the bottom that part which lies next to the said door. I then place on the compartments 4 and 3 two bricks or tiles, also three inches thick, bevel’d both alike at the sides c and d. Figure VI. in the Plate I. here¬ unto annexed represents one of these bricks or tiles; the smallest part thereof marked A, which is represented uppermost, is to lie next to the said door, the 10 sides a, b, c, and d, are to correspond with the sides of the last-mentioned compartments, lettered in the same way. Two more such bricks or tiles, but bevelled at b and c sides, as represented in Figure VII. in the Plate thereunto annexed, are in like manner to fill the compartments 1 and 6; I mean that the four last-mentioned bricks or tiles are not to be placed on the said door in 15 the same way as they are represented by the Drawing to lie, but reversed or turned round, so that the parts which appear to be uppermost be next to the said door. It will from the last description easily be perceived that the four bricks or tiles of the corners 1, 4, 3, and 6, in the said Figure IV., lock down the two bricks on the parts 2 and 5, the bevels closing upon each other, and 20 leaving at the same time bevelled slides in space 7 on both sides, which space is to be filled with bricks bevelled at two slides to fit and slide down one after the other till the said space is filled, leaving the air hole D (Figure IV.) cut out. These last-mentioned bricks may be large or small. I found bricks about four inches broad to be the best and easiest to slide down; the length of the sliding 25 bricks is of course determined by the breadth of the said space, and all the bevels must be shaped to the same angle in order to fit close together. Through the before-mentioned four bolt holes in the said door I insert from the inside of the door four bolts, which also go through the four bricks or tiles, in which holes are to be made to correspond, and these bolts are to be lettered outside 30 the door, as is seen in Figure III., Plate 1, hereunto annexed, and to guard the bolt heads from injury by the fire, they are to be countersunk in the bricks about one inch; the cavities between the bolt heads and the level of the bricks or tiles are then carefully filled up with fire clay, so as to leave the bolt heads completely buried in the bricks or tiles; a little fire clay is also put between the 35 bevels of the bricks to bind them more firmly together. It will thus be seen that the said four bolts lock and keep all the bricks firm to the inside of the door. The space 8 in Figure IV. in the annexed Plate 1 may then be filled with a few fire bricks of the same thickness, or all in one, in the usual