manner; so that whenever the centre pin is pushed in, and the plate brought nearer to the flanch, the sliding pieces and segments II will uniformly expand, and the diameter of the wheel be increased; or, on the contrary, if the pin is drawn out, the diameter will be decreased. The pin is pushed in, drawn out, or held in any required position by the screw NN, by which the rigger may be regulated whilst in motion.

In the general drawing No. 1 is represented likewise the machinery for communicating motion to the hogs or agitators TT, &c. The long spindle C n is put in motion by the pinions and wheel Co Co Co; upon the other end of the spindle C n is hung a cast iron flanch Cp, with one of its sides made flat and straight across, against which the edge of the wheel C q is held with such a degree of pressure as that the friction between the flanch and the edge of the wheel C q may be sufficient to cause the wheel C q to revolve and give motion to the agitators. The wheel Cq is made to shift upon the spindle Cr, and capable of having its edge opposed to the face of the flanch at any intermediate distance between its centre and circumference, for the purpose of adjusting the velocity of the agitators to the velocity of the machine, which varies with the quality and thickness of the paper made thereby.

We likewise give motion to the lifting tubes Bl from the spindle Cr. by means of the two riggers or band wheels C s and Ct.

In some situations where a water wheel cannot be conveniently applied to give motion to the shaking bar t, we connect it with the spindle Cn, and regulate its velocity by two friction wheels similar to those at C p and C q:

We

We now proceed to describe the means used for subdividing or cutting the long sheets of paper made by our said machine into others or smaller ones of the required dimensions; that is to say, we construct a wooden frame or table of a convenient height, its length is determined by the dimensions of the sheets of paper into which the long sheets upon the reels or rollers are to be subdivided or cut, and its width is made somewhat more than the widest sheet which can be made by the machine by The reel or roller conwhich the paper was formed. taining the paper intended to be cut is placed immediately above one end of the said table at right angles with its longer sides, and parallel with the top or upper surface thereof. The pivots or axis of the reel or roller are supported and allowed to turn in two wooden posts affixed to the ends of the table for that purpose, so that two workmen, one on each side of the said table, by laying hold of the corners of the sheet may draw it from the reel and spread it upon the table preparatory to its being cut or subdivided into smaller ones.

Near that end of the table over which the reel or rolplace ler is suspended, and parallel with the reel, we two long hardened steel plates about three inches in width, and about one-eighth or one-tenth of an inch thick, and their length ought to exceed the width of the widest paper to be cut about thirty inches.

These steel plates we affix to two strong iron bars by means of screws or clamps, one steel plate upon each bar; and place them in such a position across the table that the upper edges of the steel plates may be parallel with and about one twentieth of an inch from each other, and in the same plane with the upper surface of the table upon which the paper is to be spread. The under

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or lower edges of the steel plates are extended to a considerable distance from each other, so that a vertical sec tion of the plates, or a section made at right angles with their edges, would form two sides of an, equilateral triangle nearly, or their relative position would somewhat resemble the outer strokes or legs of the letter A. And we cause the upper edges of the said steel plates to be ground so that the basils formed by grinding the edges of the said steel plates may be in a line with each other, or in the same plane with the surface of the table or nearly so, and that the inside or opposed edges of the two plates may be sharp. We likewise construct one or more hardened steel wheel or wheels about three inches diameter, turned true, with a sharp edge round the same, basiled away on both sides similar to the edge of a hard or cold chissel commonly used for cutting iron when cold; and in each wheel we affix a transverse axis or arbor, upon which they may revolve. The edges of these wheels being applied between the opposed edges of the hardened steel plates, and the wheel or wheels caused to revolve upon them from one end to the other, the paper having been previously spread upon the table and over the edges of the said steel plates; and the said steel wheel or wheels being held down by a sufficient weight, the paper is cut by their action against the sharpened edges of the steel plates, as they revolve upon such steel plates. And to facilitate the operation, and render it more expeditious, we cause two other hardened steel plates, similar to those above described, to be placed across the table in a similar position, and further from that end of the table over which the reel is suspended, and exactly parallel with the former ones, and at such a distance from them as corresponds to the dimensions of the sheets of paper to be cut, from the larger VOL. XIII.-SECOND SERIES.

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