44 (#82) ############################################## WOOLLEN AND WORSTED SPINNING (c) Feed evenly across into the weigh-pan or directly on to the feed lattice; (d) Deliver accurately on to the feed-sheet to ensure a level feed of the machine ; and (e) Deliver its charge with absolute accuracy, never missing a charge, and always empty- ing clean. The form of feed illustrated here feeds directly on to the feed-sheet. The more usual form feeds into a weigh-pan. The material to be fed into the intermediate card or on to the condenser may be received in several forms, each of which may require special feeding mechan- ism :- (1) The doffing comb may be allowed to strip the film of wool from the last doffer of the scribbler (or first card), and this may be collected by hand and fed into the next machine by (a) hand, or (6) hopper feed. Method (a) is more usual as a hopper feed deals better with the material in the form in which it is sent out of the blending room than with the fibrous-film-mass coming from the scribbler. (2) The film doffed from the scribbler may be built up into a full width lap by a Blamire's lap-forming machine, and in this case the feed mechanism of the next card must be designed to receive two, three or four of these laps which are run together to form the full weight of film required. This feed arrangement will be easily understood by referring to Fig. 12. (3) The film doffed from the scribbler may be gath- ered together either in the centre-front of the doffer as in the case of the worsted card; or, as is more usual in the case of the woollen card, drawn off the side, and balled up into as firm a ball as possible. This type of delivery necessitates a creel to hold a number of these 44
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