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 JongKs Improvements in the Application of Coke Ovens to Boilers, #c. much as possible. The ground in front of the oven should be lowered about eighteen inches for about seven or eight feet wide, and ought to be at least ten feet long, as is shewn by dotted lines at the said Figure 1. This is for the purpose of throwing coals into and drawing the coke out of the oven; the 5 ground should also fall or decline .a little from the oven, so that when the coke is slacked with water when drawn out of the oven, the water may run off to the further extremity, where a cistern or pit will be very useful and convenient. If the whole structure be raised about eighteen inches above the ground, then it becomes of course unnecessary to lower the ground. In the front wall, and 10 about one foot three inches higher than the floor of the oven, and a few inches from the doorway, I fix strong iron crank’d rests, as represented by Figure II. in Plate I. hereunto annexed, about four inches long arid three inches broad, and projecting about one inch and a half from the wall inside, for the purpose of carrying an iron cross bar or rest for the rake when coke is drawn out of the 15 oven. In the front wall is fixed an iron door frame, as represented by Figure III., Plate I., hereto annexed. To the top part of the said door frame at A is fixed a chain for raising and lowering the said door, which said chain comes down and turns round B pulley, and goes up again and is hooked to a pulley C of about two feet diameter. Another pulley D of a larger diameter (that which I use is two 20 feet six inches) is fixed on the same shaft. Outside the frame another chain E is hooked to the last-mentioned pulley, which goes over a windlass F, to which is fixed a rack, pulley, and catch. I shall not more minutely describe this frame,as it is well known and worked at the Duke of Bridgwater’s Coke Ovens at Worsley, and in several other parts of Lancashire, and most likely also in other places, but I 25 shall proceed to describe my construction of the lining or doubling of the inside of the iron door with fire bricks, tiles, or other suitable materials, which guards against accidental cracks and apertures in the door, (so common in doors lined in the usual way, ) and consequently preserves better the heat, and is as follows, namely:—There is to be a ledge all round, about three inches broad inside, as is 30 represented by Figure IV. in the Plate I. hereunto annexed, which shews the inside of the door with the ledge I allude to (which ledge is marked X). I lay the door in a flat horizontal position, the inside upwards, and divide it into eight com¬ partments or parts, as dotted in the said Figure IV. The parts 1, 4, 3, and 6, are to be alike in size (about one foot or fourteen inches square I conceive best). In 35 the centre of these four parts are round holes, made for half-inch or five-eighth bolts to go through. I then place on the parts 2 and 5 two fire bricks or tiles, three inches thick (which thickness I think most suitable) to fit those two parts exactly. These two bricks or tiles are to be bevel’d in a particular way ; and to make this be best understood, let Figure V. in the Plate I. here-