Bbc Brown, Boveri & Company, Limited

H. A. Schlatter Ag.

Edgar Hochspach

Walter Bischofberger

Jiri Talir

Heinz Eichholzer

Werner Graber

Robert Widmer

Werner Luthi

In a device for intermittent straightening of wire there are independent drives for wire feed and the straightening rotor. The speed of rotation (v.sub.2) of the straightening rotor varies essentially synchronously to the feed rate (v.sub.1) of the wire. To cut the wire (t.sub.4) the wire and rotor are stopped. According to the invention the direction of rotation of the rotor is reversed between successive working cycles.

Method of intermittent straightening of wire

The high-voltage switch with a closing resistor has a main switch point and, parallel to this, an auxiliary switch point, the closing resistor (19) being in series with the auxiliary switch point. A movable contact (17) of the auxiliary switch point is driven via a thrust-crank drive (16), in such a way that it closes before the main switch point and opens again after the main switch point has closed. In this high-voltage switch, the object is to achieve a cycle of movement which, while ensuring a saving of components of the drive, can be adapted in a simple way to differing network conditions. This is achieved because the thrust-crank drive (16) has a compressible joint (23), and because the movable contact (17) is coupled to two impact rings (34, 35) which interact with two stops (36, 37). When the auxiliary switch point is already closed, the first impact ring (34) strikes against the first stop (36), and the compressible joint (23) is guided from the first stable position beyond a dead center position into a second stable position. At the same time, the movable contact (17) moves somewhat in the opening direction and opens the auxiliary switch point.

High-voltage switch with a closing resistor

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Wettingen, Switzerland

Edgar Hochspach