Abstract: A bobbin exchange system applied to a ring spinning frame provided with a unique creel mechanism, wherein a pair of parallel rails is provided for supporting respective bobbin carriages. Each bobbin carriage is provided with two alignments of bobbin hangers, to a number which is identical to a number of spindles of each side of the ring spinning frame.

Abstract: An apparatus for controlling a drive of each one of spinning frames forming a group, to which a conventional roving bobbin exchange operation for exchanging almost exhausted roving bobbins of the spinning frame with full packaged roving bobbins of a bobbin carrier on a supply rail arranged at a position close to and above the corresponding spinning frame by a known automatic apparatus mounted on a carrier which is capable of displacing along a track arranged on a floor of a spinning factory along an alignment of out-end frames of said spinning frames, is applied, wherein during the spinning operation, a residual roving quantity of the roving bobbins of each spinning frame is measured, while detecting a quantity of yarn wound on cops in each spinning frame, and when the above-mentioned measurement of a residual quantity of roving bobbins reaches a predetermined value, a first signal indicating this condition is issued, while the quantity of yarn wound on the cops is measured to detect a suitable condition to s

Abstract: A method for transporting articles in a system for transferring such articles between different machines provided on different floors of a building, wherein a predetermined number of articles are taken from a machine, the articles being hung in rows on a carrying unit moving along a guide rail, taking the articles to a lift, storing the articles in the lift while the articles are still hanging on the carrying unit, transferring the articles to another floor, withdrawing the articles from the lift while still hanging on the carrying unit, moving the carrying unit on a guide rail, and taking the articles to another machine by moving the carrying unit along the guide rail.

Abstract: A method and apparatus for switching the relative position between roving bobbins held by bobbin hangers of a front row and the roving bobbins held by the rear row in a spinning frame. The roving bobbin exchange operation is carried out as successive unit operations from one end-side of the spinning frame to the other end-side thereof. In each unit operation, first the axial distance between a bobbin hanger of the front row and a bobbin hanger of the rear row, which are positioned adjacently in the lengthwise direction of the spinning frame, is reduced to a predetermined distance, then the relative position of those two bobbin hangers is reversely changed while maintaining the reduced axial distance. Thereafter, the axial distance between those two bobbin hangers is returned to the initial condition for carrying out the spinning operation.