143 (#199) ############################################ WOOLLEN FRAME SPINNING Many attempts have been made to effect (1) during the last fifty years, among which the revolving of the receiving or drafting rollers (made in several forms) and the lifting of the drafting rollers intermittently to allow sufficient twist to run up the thread to the delivery a CONDENSER BOBBIN CONOCKSER DRUM CONDENSER DRUM ORIVIC SWT M SPRINCPIECE FRANINC SPRINCP EDC ly UFTINC SPINOU RAILS STATIONARY RING PLATES AND JOCERT PUM LOOR LINE Fig. 46a.--Sectional Diagram of Platt's Ring Spinning Frame with one row of Condenser Bobbins 7 rollers for drafting-twist, may be cited. The firm of Célestin Martin, of Verviers, at an early period produced a fairly successful frame in which the first or drafting- twist was obtained by a "false-twister" placed between the delivery and the drafting-rollers which inserted the false twist during the traverse of the thread. On emerging from the drafting rollers the twistless drafted 143
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