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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    jBessemer's Improvements in the Preparation of Fuel for Furnaces. occupy at the particular part of the crank’s motion there represented. It will be observed that the steam cylinder is placed with its axis in a line vertically over the crank shaft, and is there supported by trunnions G, as usual, working in plummer blocks bolted to the twTo frames H, II; these frames have lugs 5 cast on them at H*, through which stretchers are to pass in order to steady them. The frames H are bolted at foot to the flange A1 of the bed plate, in order to regulate the motion of the apparatus. The fly wheels I, I, are keyed one on to each end of the crank C. A stout connecting rod J is made with a double gib head J* to embrace the gib head D, and thus to receive motion from 10 the same crank throw. The other end of the connecting rod J is jointed by a gib head and pin to two lugs K*, which project from the stout cross-head K. The ends of this cross-head slide in guides L, L, which are secured by bolts to the flange A1 of the bed plate. There are three plungers M, M, M, keyed into the cross-head K, and work in cylindrical holes bored truly through the 15 massive block of iron N. This block N is bolted to the bed plate by a flange N*, and is keyed up between steps z, cast on the bed plate. The upper part of the cylinder block N has a large opening N1 made in it, through the bottom of which the plungers M move, and immediately over the opening N1 is the receptacle into which the softened coal falls from the retort. The 20 cylindrical holes in the block N have another set of plungers P, P, P, working in the opposite end of the holes to that occupied by the plungers M, M, M. On the flange A1 of the bed plate are bolted two guide bars Q and R, having holes bored in them of a size to fit the plungers P, P, P, which are made long enough to work through both these guides, so that when the plungers P, P, P, 25 are entirely withdrawn from their respective cylinders in the block N, they will be so guided as to re-enter them without difficulty. The plungers P, P, P, are keved to a cross-head S. On the ends of the cross-head S there are fitted •/ with gib heads two long connecting rods T (see Figure 2, as they are omitted in the rest of the Figures to prevent obscurity of the other parts). The opposite 30 ends of the connecting rods T are provided also with gib heads, and work on crank pins U, which project from one of the arms of each fly wheel I, I. These crank pins U, U, are so placed with reference to the central crank throw C, that the latter forms an angle of forty-five degrees to the crank pins, that is, the one is one-eighth part of a circle in advance of the other, and thus 35 the action on their respective plungers will be such that they will alternately approach and recede from each other at each end of their respective strokes. I have before described how the small coal is made to traverse the retort, and be deposited in the receptacle. 1 he means whereby the requisite motion is given to the chain and feeding drums is as follows:—Over one