. Yarn and cloth making; an economic study; a college and normal schools text preliminary to fabric study, and a reference for teachers of industrial history and art in secondary and elementary schools. AND CLOTH MAKING Oppel, p. 228. The , II, PL 6. The , II, PL 6. The , p. 211. Cromptons , p. 56. The mule or the muslin , p. 141. Cromptons spinning mule. X SELF-ACTING MULEDistinctive Characteristics First machine for spinning fine yarn without manualhelp: the hand mule very much enlarged and perfectedto work entire
. Yarn and cloth making; an economic study; a college and normal schools text preliminary to fabric study, and a reference for teachers of industrial history and art in secondary and elementary schools. AND CLOTH MAKING Oppel, p. 228. The , II, PL 6. The , II, PL 6. The , p. 211. Cromptons , p. 56. The mule or the muslin , p. 141. Cromptons spinning mule. X SELF-ACTING MULEDistinctive Characteristics First machine for spinning fine yarn without manualhelp: the hand mule very much enlarged and perfectedto work entirely automatically. Attenuating device: pairs of drawing rollers and spindleson moving carriage. Twisting device: row of Jenny spindles fitted with copbobbins. Winding device: moving carriage and spindles so ad-justed to their varying speeds as to work automatically. Spinning intermittent. Outline Example: Roberts mule. Implement — Self-acting cotton mule. 1. machine with frame, headstock and moving carriage. 2. frame with drawing rollers and rove creel. 3. moving carriage with row of Jenny spindles fitted with cop bobbins and automatic faller andcounter-faller wires. SPINNING TYPESI. Period. 65. Fig. 25.—^FouR Stages of Mule Spinning 4. headstock communicating motion to all parts, care-fully adjusted to the many varied movements — Steam (13). 66 YARN AND CLOTH MAKING Motion—-Intermittent, with three movements (ll, llh). 1. Attenuating. 2. Attenuating and twisting. Twisting. 3. Winding, Process — Drawing by rollers and stretching by movingcarriage (l2).Twisting by spindles. Winding by spindles, faller and counter-faller wires onmoving carriage. 1. Rove bobbins placed on creel, carriage in front of rollers. 2. Rove delivered to first pair of rollers and drawn as it passes between each succeeding pair,when it is delivered to slowly revolving spindlesof the receding carriage which further lengthensit by stretching (8, 8i, 9, 9g). 3. When carriage has covere
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