Abstract: A device for loading yarn collection tubes onto spindle rows of spinning machines and twisting frames. The device comprises a carriage which is moved horizontally at a constant speed along the spindle row. A magazine is disposed on said carriage and contains empty tubes in substantially horizontal position. A first conveyor formed by a succession of cup elements is moved on said carriage along a vertical path and conveys tubes from the magazine into a discharge position where said cup elements are rotated into a vertical position to discharge the tubes therefrom.

Abstract: A bobbin doffing mechanism for spinning and twisting frames is disclosed, the improvement consisting in that a plurality of fluid-controlled doffing units is mounted on a generally elliptical race so that the spindle line is arranged along a rectilinear path of the race, the opposite rectilinear path being opposite to the spindle line. The plurality of doffing units travel in a closed loop on the generally elliptical path. The doffing units comprise gripping members for doffing and discharging the bobbins, these units being fluid-controlled, preferably pneumatically controlled, the sequence of operations being commanded by a specially provided cam mechanism.