American School of Correspondence · Chicago, American school of correspondence · leaf 273
main piece, B^, builder screw,D^, with right and left threads; builder rack, P, and top and bottomjaws, V, and, X. A gear J\ which is upon the lifting shaft, A^, is incontact wnth the builder rack. The rotations of the lifting shaft causethe builder to slide up and down on the guide rod, W^. On the… … /_.i„ Fig. 16V. Fly FiT.me Bobbin. 2%2 COTTON SPINNING 201 ..L^-.......K.....W^...-^^^.^»^-.-..-- -..VW,Ws^^^~li, . ,,A^■.^^V...■!^■ SSSWrn-.TtS^jTa^ BL _E=-
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