COTTON MANUFACTURE.

365

annular holder or bush, which embraces the fast arm xi with its forked end. Upon itsopposite side, this arm carries a pulley t/ 2 , upon which a cord goes, that is made fast tothe holder of the shaft yi, and loaded with the weight z'. The weight presses thePulley x' against the surface of g', in such wise as to effect the degree of friction necessary] n order that the revolution of g' may produce an uninterrupted revolution in x'. APmion w', whose length must be equal at least to the semi-diameter of the sheave g', isPlaced upon the under end of the shaft yi. It has 22 teeth, and takes into a 62-toothedhorizontal wheel zi. Upon the upper end of this wheel the conical pinion «3 i s made■ust, which may be changed for changing the speed, but usually has from 28 to 30 teeth.% this pinion the conical wheel 63 is turned, which has 30 teeth, and whose shaft is c 3.fhis shaft carries upon its opposite end a six-leaved pinion, d% which takes into thecalender wheel ft, formed with cogs like a trundle, upon the long shaft c3. In fig. 338the wheel /3 is exhibited with its pinion d3. Here we may remark, that in the circum-ference of the wheel there is a vacant place, g3, void of teeth. When, by the motion ofthe wheel, the pinion comes opposite to this opening, it turns round about the last toothJ™ the wheel, falls into the inside of the toothed circle marked by the dotted lines, andthus gives now an inverse movement to the wheel ft, while itself revolves always in the'nine direction. This reversed motion continues till the opening g3 comes once more

338

hgain^ 6 to the pinion, when this turns round about the last tooth of that side, and beginsdepend to ' vor ' f tn the exterior teeth. Thus, by the uniform motion of d 3 and itsand th nt P arts > the wheel ft, with its shaft e3, revolves alternately to the right handslide ’ That this result may ensue, the shaft cs of the pinion must be able to

^ a cin» ' v ' se > without losing its hold of a3 and 63. This adjustment is effected byand Jl. l he end of the said shaft, nearest 63, in a box or holder H, in which it can turn,to f° rms a vertical tube to this box, as a downward prolongation which is fixed

an ent a the conical pinion n3. Fig. 339 shows this construction in section uponniean s r ? e ? sca i e - The second bearer of the shaft nearest ds, must possess likewise the°f the wb latera i motion. When therefore the pinion d3 shifts through the openingn ’°tion u* eel -^ 3 outwa rds or inwards, its shaft c3, makes a corresponding small angularPletely ii* 011 t * le Pi v °t of a3, by means of the tube i3; «3 and 63 remain thereby com-The " ear w tth one another.

a nd down ° Ve ‘? escr ihed alternate revolutions of the wheel /3 serve to produce the upMiich wo n ° tio ns °f the bobbins. The shaft e3 has for this purpose two pinions ni n»,it 111 the rack teeth mi mi of the copping rail p, and thus alternately raise andtts depend tile b°bbins which rest upon it. The weight of the copping beam and allPulleys or 0 T P arts ) is poised by two counterweights m 4, whose cords run over theupward mot' 04 ’ an ^ have their ends made fast to the frame, so as to make the

ea ch weight° n as eas y as the downward. The two upper pulleys out of the three ofatta ched to th 316 bxac * to tlle f rame i the under one, round which the cord first runs, isAs e copping beam, rising and falling along with it.

j^°tion fric tion disc x' remains at the same height, the pulley g' derives its

c aa m i s a ] SQ e same circle of the said disc, and the up and down motion of the copping* rc |c np 0Il th p ni f 0rm ' But when that disc ascends so as to describe with its edge a small, et hod, or _ r - ? ce °f S', its motion must become proportionally more slow. This is the®Weve r , that tli ° ° y . retar( l*ng the copping motions of the bobbins. It has been shown,an S °bject is e ff , rotat * on °f the bobbins should be also retarded in a progressive manner.Wishes toward?^ by ,? ean . s of the cone k', which, as the band n progressivelythi 0 ^ ecr easina J S V s sma ller diameter, drives the pulleys or whorls q of the bobbins• v . ar iation th,? 060 ’ ^pugh itself moves uniformly quick with the shaft c. To effectW P ;\remains <■ C ?- ne lifted lengthwise along its shaft, while the band runningbe h 1 ° y Ike PulW U ? U nn. * n *' le same vertical plane, and is kept distended by thees t Understood v. Allowing mechanism serves to shift the cone, which may

Dy the aid of the figures 340, 341, and 337. A long cast iron bar m3,