. Memoirs of the American Academy of Arts and Sciences. which runs the bobbin-belt, H H, bearing wooden cylinders, or bobbins, alter-nating with the rows of points in the hatchel. J is a gear-wheel on the shaftof the cylinder B. K is a pinion driving the same. N is a pulley on a shaft,with proper gearing at its opposite end to drive the cog-wheel pinion k and thewheel J. The head of the machine, at the right, is driven by the cog-wheel p, Fig. 2,which is geared with the wheel o, and drives the whole machine, d, c, i, j, k, and/are pulleys over which run two broad (ten-inch) endless bands, call
. Memoirs of the American Academy of Arts and Sciences. which runs the bobbin-belt, H H, bearing wooden cylinders, or bobbins, alter-nating with the rows of points in the hatchel. J is a gear-wheel on the shaftof the cylinder B. K is a pinion driving the same. N is a pulley on a shaft,with proper gearing at its opposite end to drive the cog-wheel pinion k and thewheel J. The head of the machine, at the right, is driven by the cog-wheel p, Fig. 2,which is geared with the wheel o, and drives the whole machine, d, c, i, j, k, and/are pulleys over which run two broad (ten-inch) endless bands, called drawing-beltsor apron-belts. The pulley / is furnished with a sliding frame, h, and a screw andthumb-nut, I, for tightening the band. The endless band, n, moving in the direc-tion of the arrows, passes over and encompasses successively the pullejs d, i, k, j\and none others. A similar belt, m, passes in the direction of the arrow over andencompasses the pulleys c,f, d, and none others. The band m is tightened by the 37^ WEMOIR OF DANIEL MEMOIR OF DAXIEL TKEADWELL. 373 r!». 2. thumb-screw /; and the band n, by raising the shaft a. that bears the pulley K. z isa plate of sheet iron fastened to the frame, -which, with another similar plate on theopposite side of the frame, directs the hemp to tlie drawing-belts in and ii. Now let us suppose the hatchel-belt E eto be moving in the direction of the arrow,and a portion of hemp forming a column orlarge roving to be placed upon a trough sothat it shall be conducted to the points on theleft of the hatchel belt, into which it will bepressed by the cylinders of the bobbin-belt,and pass along with that belt until it reachesthe plates z. These plates direct it to theplace where the belt m meets the belt n outhe under side of the pulley (/, Fig. 2, andaround which these belts both pass. Nowthe tension of the belt m, being very great,this nips or presses the fibres of hemp veryclosely upon the belt n, passing round thepulley e
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Keywords: ., bookidmemoirsofamerica1888amer, booksubjectscience, bookyear1783
