Abstract: A machine utilizing an endless band knife mounted so as to define two horizontally spaced cutting edges, both said edges facing in the same direction. A work piece support and the band knife have to and fro relative movement. The cutting edges are mounted for vertical adjustment relative to the workpiece support.

Abstract: An arrangement for cutting workpieces with a scanning device having a signalling photoresistor which detects markings, with an attached control device which contains a first timing element to which a switch for reducing the rate of speed is connected includes an OR-element connected between the first timing element and the switch with a further timing element connected by means of an AND-element to the input and output of the timing element with the input of the further timing element being connected to the output of the AND-element and the output of the further timing element being operationally connected to the input of the OR-element.

Abstract: Retarding markings are provided alongside a linear pattern to be cut out by an automatic device guided by a photoelectric scanner. The markings are disposed a short distance ahead of the changes in direction of the pattern line, which is greater than the resultant decelerating path of the advance motors from the original faster advance speed to the resultant slower advance speed. A timing circuit initiates the change in advance speed after the retarding mark is detected and a second timing circuit changes the overhang of the line-scanning photocells from an initial greater magnitude to the lesser required magnitude correspond to the slower advance speed. Acceleration marks may also be provided after directional changes in the pattern to accelerate the advance speed back to the original advance speed after the changes in directions are accomplished.

Abstract: The invention concerns a method for the automatic cutting of fabrics and the like in a cutting plane according to a pattern template which contains the cutting information to be sensed by a sensing device in the form of a single, continuous, intersection-free line which is composed in stages of contour line parts of the pattern parts and of contour line parts of narrow bars which connect the pattern parts, the contour line parts of the pattern parts and the bars meeting together and forming sharp corners, with the help of a cutting device containing a knife, as well as a device for carrying out this process.