WOOLLEN MANUFACTURE 11/1 



Between the 16 sides there are 16 intervals, which correspond to the 16 hollowings 

 of each of the wheels. Into these intervals are adjusted, with proper precautions, 16 

 frames bearing the teasels which are to act upon the cloth. These are fitted in as 

 follows : Each has the shape of a rectangle, of a length equal to that of the drum, 

 but their breadth enly large enough to contain two thistle-heads set end to end, thus 

 making two rows of parallel teasels throughout the entire length (see the contour in 

 fig. 2129). A portion of the frame is represented in fig. 2131. The large side i, against 

 which the tops of the teasels rest, is hollowed out in a semi -cylinder, and its opposite 

 side is cleft throughout its whole length, to receive the tails of the teasels, which are 

 seated and compressed in it. There are, moreover, cross-bars i, which serve to 

 maintain the sides of the frame i, at an invariable distance, and to form short 

 compartments for keeping the thistles compact. The ends are fortified by stronger 

 bars k, k, with projecting bolts to fasten the frames between the ribs. The distance of 

 the sides of the frame i, i', ought to be such, that if a frame be laid upon the drum, 

 in the interval of two ribs, the side i will rest upon the inclined plane of one of the 

 ribs, and the side i' upon the inclined plane of the other (see fig. 2129) ; while at the same 

 time the bars k, of the two ends of the frame rest upon the flat parts of the ribs 

 themselves. This point being secured, it is obvious, that if the ends of the bars k be 

 stopped, the frame will be made fast. But they need not be fixed in a permanent 

 manner, because they must be frequently removed and replaced. They are fastened by 

 the clamp, figs. 2132, 2133, which is shut at the one end, and furnished at the other 

 with a spring, which can be opened or shut at pleasure. 2 and 4, in fig. 2130 (near 

 the right end of the shaft F), shows the place of the clamp, figs. 2132, 2133. The bar 

 of the right hand is first set in the clamp, by holding up its other end; the frame 

 is then let down into the left-hand clamp. 



2132 

 2131 



2133 



The cloth is wound upon the lower beam Q, fig. 2129 ; thence it passes in contact 

 with a wooden cylinder T, turning upon an axis, and proceeds to the upper beam p, 

 on to which it is wound ; by a contrary movement, the cloth returns from the beam 

 i> to Q, over the cylinder T ; and may thus go from the one to the other as many times 

 as shall be requisite. In these successive circuits it is presented to the action of the 

 teasels, under certain conditions. In order to be properly teasled, it must have an 

 equal tension throughout its whole breadth during its traverse; it must be brought 

 into more or less close contact with the drum, according to the nature of the cloth, 

 and the stage of the operation ; sometimes being a tangent to the surface, and 

 sometimes embracing a greater or smaller portion of its contour, it must travel with a 

 determinate speed, dependent upon the velocity of the drum, and calculated so as to 

 produce the best result : the machine itself must make the stuff pass alternately from 

 one winding beam to the other. 



Itifig. 2130, before the front end of the machine, there is a vertical shaft L, as high 

 as the framework, which revolves with great facility, in the bottom step I, the middle 

 collet I', and top collet I", in the prolongation of the stretcher D. Upon this upright 

 shaft are mounted 1, a bevel-wheel i/ : 2, an upper bevel-pinion M, with its boss M' ; 

 3, a lower bevel-pinion N, with its boss N'. The bevel-wheel i/ is keyed upon the 

 shaft L, and communicates to it the movement of rotation which it receives from the 

 pinion /, with which it is in gear ; but the pinion /, which is mounted upon the shaft 

 F of the drum, participates in the rotation which this shaft receives from the prime 

 mover, by means of the fast rigger-pulley /'. The upper pinion M is independent 

 upon the shaft L ; that is to say, it may be slidden along it, up and down, without 

 being driven by it ; but it may be turned in an indirect manner by means of six curved 

 teeth, projecting from its bottom, and which may be rendered active or not at pleasure ; 

 these curved teeth, and their intervals, correspond to similar teeth and intervals upon 

 the top of the boss M', which is dependent, by feathered indentations, upon the rotation 

 of L, though it can slide freely up and down upon it. When it is raised, therefore, it 

 comes into gear with M. ,The pinion N, and its boss, have a similar mode of being 

 thrown into and out of gear with each other. The bosses M' and N', ought always to 

 be moved simultaneously, in order to throw one of them into gear, and the other out 

 cf gear. The shaft L serves to put the cloth in motion, by means of the bevel- 



4F2 



