Abstract: A gun for applying cable ties includes a pinch wheel for acting on the flat tail of the tie to drive the tie from the gun, the tie being guided (as it is advanced, tail-first) around a nose loop guide. The tie finishes with its head engaged with a threader which is then lifted to lift the tie head and thus cause the tail to pass through the head aperture, become interlocked therein and project from the lower side of the head. Then the threader is lowered to lower the head and engage the projecting end of the tail with a pinch wheel which serves to tension the tie. The ties are fed from a bandolier of side-by-side ties in which they are interconnected at their heads and tail tips by continuous strips running along the edges of the bandolier, successive ties being cut from the bandolier while leaving the two strips intact.

Abstract: To provide for fast response of a servo drive with a synchronous machine in which the same torque is available over the entire rotational range of the machine regardless of angular position of the rotor, phase currents to phase windings, preferably three-phase, are controlled in dependence on required torque, and steered to the respective phase windings by a rotor position transducer in such a manner that the sum of all the phase currents remains constant, and is connected to the respective phase windings, in pulses, during an electrical angular range when induced armature counter electromotive force voltages in the respective phase windings, which have an essentially trapezoidal shape, are in their flat or unvarying range within the voltage distribution during revolution of the rotor. Thus, currents are supplied to the phase windings only when the counter EMF voltages are essentially constant.