Specification of Henry Bessemer : fuel and furnaces.

  • Bessemer, Henry.
Date:
1855
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Henry Bessemer : fuel and furnaces. Source: Wellcome Collection.

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    wheel, so that when any number of them are placed next to each other on a shaft a sufficient space is left between them to allow another similar set of wheels to pass in between their intermediate spaces, as represented in t le Drawings; where a is a rectangular cast-iron frame, having a flange a1 extending around three of its sides, and in front is carried up higher at a2, and 5 there forms a sort of dead plate to the furnace. The front of the frame a is pannelled, and projects forward as far as the face of the two piers b, b. On the sides of the frame a are cast the bosses c, which are bored through, and form the bearings for the shafts cl, which carry the “ wheel grate f these shafts d have a feather made along them, so as to insure the revolving of the wheels 6 10 with the shaft. When the shaft is put into the frame a, and its wheels placed upon it, the collars m and n are fixed in their places by a cross pin, the wheels e, which answer the purpose of fire bars, having been fixed, the worm wheels g and h are keyed on to the shafts d, These wheels are so made that they may all work into worms placed below them on the shaft/; but as their 15 diameters are too great to allow of them all working in the same line, I have keyed on the three wheels g to their respective shafts in a line, and put the two worm wheels h further along their shalts, so as to run clear of the wheels g. it will be observed that these wheels are made with a slight curved bevil in such a way that they can work on either side of the centre 20 of the worm shaft / (see Figure 2). The wheels g are driven by three worms i, and the wheels k by two other worms, which are not seen, because the bosses h* of the wheels h obscure them. The end of the shaft /, which projects from the front of the furnace, may be provided with a wheel or drum, according to local circumstances, by which motion maybe transmitted 25 from the steam engine, and the worm wheels with their respective shafts and grate wheels be made to revolve in a direction indicated by arrows. On the wheels e, on the under side of that part of the frame a which forms the dead plate, there are a number of pieces r, moving on a joint at s, so as to bear freely down upon the wheels e* on the second shaft. These pieces serve to fill 3.0 up the interstices between the first set e\ or feeding wheels, and form a con-' tinuation of the dead plate; but the wheels e\ rising up through the piecesr, will carry forward any fuel that may fall upon them ; and thus the movement of the whole of the wheels being in one direction, the fuel will be carried l forward and consumed. At the fire bridge there is a square iron bar p, extend- 35 ing across the furnace, and having a hole through it, for the circulation of water; the clinkers that are carried to the back of the furnace can pass out between this bar and the last set of wdieels in the front part of the furnace. I have left an arched opening t, of about the size usually made where