American School of Correspondence · Chicago, American school of correspondence · leaf 281
face of the cone, for each set. When the stop motion operates, the movement of the lever, Z^,disconnects the tension gearing by sliding E-^ out of contact with F^.This allows the cone belt to be wound back which cannot be done withthese gears in contact, and as the builder screw is driven from the… … Fig. 175. FuU BoDbin Stop Motion. twisting around the empty bobbins. The bobbins are driven fromthe bottom cone through the differential gearing and, with the coneraised, they do not revolve, consequently, the roving is not wound. The power for driving the bobbins and the traverse of the rail…
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