US17294A - Coal-cracker - Google Patents

Description

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TowNsEND PooRE, oF CARBONDALE, PENNsYLvANiA.

COAL-CRACKER.

Specification of Letters Patent No. 17,294, dated rMay 12, 1857.

To all whom t may concern Be it known that I, TowNsnNn PooRE, of Carbondale, in the county of Luzerne and State of Pennsylvania, have invented cer tain new and useful Improvements in Machines for Cracking Coal, and which I call Poores Coal-Cracker, and I do hereby declare the following to be a full, clear, and exact description of the construction and operation of the same, reference being had to the accompanying drawings, making a part of this specification, in which- Figure l represents a perspective view, Fig. 2 represents a vertical longitudinal section through the same in one of its positions, Fig. 3, represents a similar section, when the machine is in its opposite position, or as the crusher rocks in the grated hopper, and Fig. 4, represent-s one section of the grating detached from the machine.

Similar letters of reference where they occur in the several figures denote like parts of the machine in all of them.

The nature of my invention consists in the combined use of the rocking crusher, with the grated hopper, part of which hopper is stationary, and part movable, and working in connection with the crusher, as will `so at the top and ends. Within this frame A, is hung upon trunnions B, passing through or supported in the sides thereof, near their bottom portions, a crusher C. The sides D, of this crusher are of plates of iron, and its crushing surface is formed of gratings a, a, divided by ribs or bars c, c, and projecting teeth Z9, b, cast or otherwise wrought on said bars or ribs c. The general outline of the crusher is of a heart-shape, as shown in Figs. 2 and 3, the crushing surfaces being segments of circles, whose centers are at opposite corners of said segments, and making as it were an inverted Gothic arch. The sides D, of this crusher, have projections E, E, which extend upward, and

Gr, is a cover or cap, closing up the top of the crusher, and held in place by a rod e, and pin f, as seen in the drawings, and readily removed to gain access to the interior of the crusher. The crusher is open at its lower end, as seen at g, so that the coal which may be driven through its gratings in the crushing or cracking process, may drop out below.

rI o the frame A, are permanently or .immovably fixed the gratings'I, I, composed of open squares z', z', and ribs a, n, which as well as the ribs c, c, heretofore described are of the peculiar form shown-in the sections Figs. 2, 3, viz: so shaped that the pieces of coal, after passing into or through the open squares or spaces for a certain distance shall not be held by the ribs, but freely pass through. The ribs are of double wedge form, with the butts of the wedges together, and their thicker portion nearer one surface than the other as shown in said Figs. l and 2. These gratings I, I, are of a concave form, to suit the convex form of the crusher that works against them, and they extend downward, and form about one half of the concave, viz the top half.

J, J, are movable gratings hinged at their upper ends by journals m, m, to the sides of the frame A. These movable gratings are hung in close proximity to the stationary ones I, above them, and so as to form a continuation of said upper gratings, down to near the bottom of the frame, where an opening h, is left, for the coal to drop through from the inside of the crusher; and to the lower ends of these swinging gratings J, J, are connected journals or wrist pins o, o, which project through curved slots p, p, in the frame A. The journals m, and wrist pins 0, are connected by a bar K, each, and to these bars, are fastened respectively, the lower ends of two connecting rods L, L, the upper ends of which connecting rods are united to a cross rod M,` which passes through the projections E, on the crusher. There are slots r, in the bars K, and slots s in the projections E, so that the throw of the swinging gratings J, may be regulated to the extent that is required to break the coal, by changing the connecting rods L, in said slots.

The operation of the machine is as f0llows: The coal is thrown in at each end between the rocking crusher C, and the gratings I, where it receives its first cracking,

tively, the hinged portion J, is brought upl with a blow, ,by means of its connections with the cross head or projections E, Vto which the cross head is connected, and thus causes a second breaking or cracking. And, as will be seen in Figs. 2, 3, the eXtreme bottom part of the hinged gratings, come close l up against the Crusher and prevent any `unbroken coal from dropping through there, and thus the coal is cracked', and driven through the squares, of such size as the squares will admit-there being of course no pieces larger than the area of the openings-while the screen separates the other sizes afterward. rlhe teeth on the Crusher are at the points where the grate bars vcross each other, and so arranged that a tooth on the Crusher Works opposite the center of a space in the other grate, and the coal is thus cracked between two resisting points.

Having thus fully described the nature and object of my invention, what I claim therein as new and desire to secure by Letters Patent is- Y The combination of the rocking cracker, with the iXed and swinging gratings, substantially in the manner and for the pose set forth. p

y TOWNSEND POORE. Witnesses:

J. M. Poomi, P. S. JosLIN.

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