Sack Gmbh

Rolf Schulte

Emil F Kersting

Karl Griese

The shears have a lower blade and an upper blade. The upper blade is reciprocated with respect to the lower blade through a transmission. The transmission includes a first eccentric which is continuously rotated to continuously reciprocate the upper blade over a vertical stroke equal to the throw of the first eccentric. This throw is transmitted to the upper blade through a second eccentric surrounding the first. The second eccentric is quickly rotatable, between two positions. In the first position, the upper blade is always clear of a billet on the lower blade. In the second position, the upper blade cuts the billet during the reciprocation. To ensure that the upper blade only penetrates approximately half the thickness of the billet, the position of the lower blade is vertically adjustable.

Cold shears and method for cutting billets and bars

Flying cropping shears for hot strip for two horizontally spaced pairs of cutters. The cutters are driven by parallel crank drives through connecting members which maintain parallelism of the cutters. Means are provided for selectively bringing the pairs of cutters into and out of the cutting position. In this way only one pair of cutters is operative during rotation of the crank drives so as to crop either the front or the rear end of the hot strip.

Growing community of inventors

Dusseldorf, Germany

Rolf Schulte