Thread deflectors, particularly for a hollow spindle machine
AssigneeN. Schlumberger et Cie, S.A.
InventorHenri Genevray
Life of this patent
Estimating the term…
Abstract
Deflection members for threads, particularly for a hollow spindle machine. The members are movable in translation by a displacement device, from a first position, during normal functioning of the machine, in which each thread (2) is no longer in contact with the corresponding deflection member, and thus with the corresponding twisting device (3), to a second position during the phases of acceleration, deceleration and stoppage of the machine, in which each thread (2) is then applied by the deflection member (1) with which it is in contact, against the corresponding twisting device (3). The thread thus receives during only these three phases, the false tension necessary to impart to it at that time constant tension and winding independent of the speed of thread travel.
Claims7
In a hollow spindle machine of the winding type having a twisting device (3) for thread (2) from a spindle to twist the thread on itself;
- the improvement comprising a deflection member (1) for deflecting the thread against the twisting device (3), displacement means (5) for displacing said deflection member (1) from a first position (6), during normal operation of the machine, in which the thread (2) is out of contact with the deflection member (1) and out of contact with the twisting device (3), to a second position (7) only during the phases of acceleration, deceleration and stoppage of the machine, in which second position (7) the thread (2) is applied by the deflection member (1) with which it is in contact against the twisting device (3), so as to impart to the thread (2) during only the phases of acceleration, deceleration and stoppage of the machine the false tension necessary to ensure to the thread during those phases constant tension and winding independently of the speed of thread travel, and control means responsive to acceleration, deceleration, stoppage and normal operation of the machine to actuate said displacement means (5).
Dependencies are inferred from the claim text.