Abstract: A machine for cutting slices from a cylindrical workpiece such as a log of pressure sensitive tape. The machine has a machine frame and a mandrel on the frame for holding and rotating the cylindrical workpiece. A disc shaped cutting blade is mounted on a carriage and is movable to cut the workpiece into material slices. The carriage is movable to shift the cutting blade to locations along the mandrel at which the workpiece is cut into slices. A drive mechanism is connected to the carriage assembly for moving the carriage assembly along the mandrel. That drive mechanism has a drive handle which can be manually gripped to disengage a drive rack and pinion and so enable movement of the carriage assembly in either direction along the mandrel. A one-way clutch mechanism connects the handle to the pinion so that rotation of the handle in alternate directions incrementally moves the carriage assembly in one direction only along the mandrel.

Abstract: A slitter machine for slitting a film sheet wound on a core in a roll to obtain desired widths of film sheet for laminating onto metallic substrates of semiconductor devices comprises a main frame, notches on the main frame for rotatably supporting the roll on the frame, a rotatable knife blade for slitting the roll sheet into a strip of desired width, a tiltable knife blade mounting plate on the frame for mounting the knife blade on the frame, guide tracks adjusting the lateral position of the knife blade to adjust the width of the strip being cut, an air cylinder for pressing the knife blade into the rolled sheet to cut the sheet into strips of the desired width, and a sensing roller for limiting the depth of the cut.

Abstract: A device for separating a cardboard tube into cores for winding strips of material includes a mandrel mounted for rotation on a frame. A carriage reciprocates in parallel with a mandrel and may be positioned very precisely to cut cores of preselected axial width from the tube mounted on the mandrel. A blade pivots on the carriage for performing the actual cutting operation.

Abstract: Apparatus and method of truncating a tube by having a knife act against a counter-knife which is positioned within the interior of the tube. The counter-knife is maintained in a desired position with respect to the knife by a magnetic apparatus.

Abstract: The invention relates to a device for truncating tubes, comprising at least one knife, which cooperates at the end of the cut with a counter-knife positioned within the tube to be truncated and which is connected mechanically to a core of strong magnetic permeability. In one embodiment, a winding is wound in a framework around the tube to be truncated, to create a magnetic field in the core through the tube to be truncated so as to be able to act magnetically on the longitudinal position of the core and thus on that of the counter-knife. At least one pair of tubular sleeves are fitted at each of the ends of the framework and are formed of a material of strong magnetic permeability, to direct and form the lines of induction. In another embodiment, the winding is arranged around a core which is fixed with respect to said winding and whose axis is positioned parallel and at a distance from the longitudinal axis of the tube to be truncated.

Abstract: A device for cutting a support helix for a radially expanded sleeve of resilient material which may be used as an enclosure of an elongate object such as an electrical cable. The device includes a knife wheel having a plurality of circumferentially distributed, radially projecting knives for making elongate spaced cuts through the wall of a plastic tube. The plastic tube and the knife wheel are rotated and moved axially relative to each other to cause the knife wheel to make a helical pattern of elongate spaced cuts through the wall of the plastic tube along the entire length of the plastic tube. One end portion of the helix is separated from the helix into a strip extending from one end of the helix through the support helix and out of the other end thereof where it may be manually grasped. The connection areas between the spaced cuts are dimensioned so that the support helix can be manually unwound by pulling on the end portion extending through the support helix.

Abstract: An apparatus and method of truncating a tube by having a knife act against a counter-knife which is positioned within the interior of the tube. The counter-knife is maintained in a desired position with respect to the knife by a magnetic apparatus.

Abstract: A machine for cutting slices from a cylinder of material. The machine has a machine frame with a holding assembly thereon for holding a cylinder of material for cutting and rotating the material cylinder about a central longitudinal axis. A disc shaped rotatable cutting blade is carried by the carriage assembly and drive means rotates the cutting blade. A carriage assembly is mounted on the frame for movement to present the rotating cutting blade to the rotating material cylinder for cutting the cylinder transversely into material slices. A brake mechanism is actuable to positively brake gripping chuck rotation upon cessation of the gripping chuck drive means operation. Moreover, a separate brake mechanism is operable to positively brake cutting blade rotation upon cessation of the cutting blade drive means operation. This braking prevents free running of the gripping chuck, material cylinder and cutting blade.

Abstract: A paper cutting attachment for a drum type plotting apparatus for a computer. The attachment comprises a round slender cross-shaft adapted for mounting to the plotting apparatus. A cutter head is carried on the cross-shaft and is free to rotate and translate on the cross shaft. The cutter head has a circular cutting blade and guard means to protect the operator against injuries from the cutting blade. Means are provided for mounting the cross-shaft to the drum type plotting apparatus.

Abstract: A cutting device for use in cutting a cylindrical material around a mandrel into annular bodies of the desired width. This device has a first moving table to move in the axial direction of the mandrel, a second moving table to move on the first moving table in the radial direction of the mandrel, a cutter support carrying a first cutter adjustable in position in the radial direction of the mandrel and/or a second cutter adjustable in the axial direction of the mandrel, and a control unit with a device for detecting the position of each moving table, a device for receiving output signals from the detecting device and comparing the position with position data set beforehand and a driving circuit to move each moving table according to output signals from the comparing device.

Abstract: A process and apparatus are provided for manufacturing cardboard tubes with incorporated closure for packing or sending articles or documents and tubes obtained by implementing this process. The process comprises the continuous formation of a cardboard tube on the rotary mandrel of a spiralling machine and cutting the tube into tube elements discharged by the machine. This cut out is provided in the form of a sinusoid with provision of appropriate fold lines. Thus tube elements are obtained, without waste of material, whose ends have two opposite tongues which may be folded back, the adjacent ends of two successive tube elements being offset by 90.degree..

Abstract: An elongated cylindrical mandrel holds a dummy electrical connector receptacle at one end, and slidably carries a concentric tubular carrier which is biased towards the dummy receptacle. A plurality of circumferentially spaced spindles are hinge mounted at their one end to the carrier for pivoting angularly with respect to the carrier axis and carry cutter wheels on their outboard ends. A slide closer concentrically surrounds the carrier, is axially displaceable, and bears cam surfaces contacting the spindles to cause the spindles to pivot inwardly towards the dummy receptacle. When the mandrel is projected, the receptacle receives in attachment the electrical connector plug bearing the tubular bayonet coupling ring to be severed. A stop limits the pivoting of the spindles and cutter wheels to permit the ring to be severed circumferentially without damage to the plug or its wiring.

Abstract: In apparatus for converting tape roll stock into narrower roll segments, and which includes a rotatable cutting blade and means for automatically advancing the blade to engage and cut a revolving roll of tape and means for retracting the blade between sequential cutting operations in a repetitive process, a clutch mechanism for locking the blade on its shaft against rotation during initiation of entry of the blade into the roll stock, thereby to avoid adverse effects such as nicking and double cutting due to lateral runout of the cutting blade edge during blade rotation.