Abstract: A cutting device, including a frame, a cutting blade, which is fastened to the frame for pivoting about a first pivot axis, and a reduction transmission, which converts each forward pivoting movement of a plurality of successively performed forward pivoting movements and backward pivoting movements of a drive arm into a cutting pivoting movement of the cutting blade. A cutting-blade back-pivoting apparatus is provided, by which the cutting blade can be pivoted back from a pivoting end position to an initial position. The back-pivoting apparatus has, in particular, a tension element, which acts on the cutting blade in such a way that a clearance is formed.

Abstract: A cutting device, including a frame, a cutting blade, which is fastened to the frame for pivoting about a first pivot axis, and a reduction transmission, which converts each forward pivoting movement of a plurality of successively performed forward pivoting movements and backward pivoting movements of a drive arm into a cutting pivoting movement of the cutting blade. A cutting-blade back-pivoting apparatus is provided, by which the cutting blade can be pivoted back from a pivoting end position to an initial position. The back-pivoting apparatus has, in particular, a tension element, which acts on the cutting blade in such a way that a clearance is formed.

Abstract: A drill bit has a cylindrical drill head (1) having two essentially diametrically situated primary cutting edges (2) and chip channels (3) associated therewith. The outer surface (5) of the drill head is formed by curved sections (6) whose end faces (4) have teeth (8) which extend in the axial direction (A) and have cutting edges (7) and cutting faces (9). The cutting faces (9) run at an acute angle in the cutting direction (S) and are set back with respect to a radial line (L) passing through the cutting edge (7). The teeth are formed by crenellated elements (8) which with one of their respective side walls form a cutting face (9) of the cutting edges (7). The side walls (10) of the adjoining crenellated element (8) opposite from the cutting face (9) runs parallel to the cutting face (9).

Abstract: The invention relates to a drill bit comprising a cylindrical drill head (1) having two essentially diametrically situated primary cutting edges (2) and chip channels (3) associated therewith, the outer surface (5) of the drill head being formed by curved sections (6) whose end faces (4) have teeth (8) which extend in the axial direction (A) and have cutting edges (7) and cutting faces (9), the cutting faces (9) running at an acute angle in the cutting direction (S) and being set back with respect to a radial line (L) passing through the cutting edge (7). To improve the manufacturing process for a generic drill bit, it is proposed that the teeth are formed by crenellated elements (8) which with one of their respective side walls form a cutting face (9) of the cutting edges (7), the side wall (10) of the adjoining crenellated element (8) opposite from the cutting face (9) running parallel to the cutting face (9).

Abstract: A cutting device has two jaws (1, 2) which can be moved one over the other by means of manual operation. At least one of the jaws has a cutter (3) and a protective nose (4). The protective nose (4) is arranged in front of the cutter (3) and projects into the cutting mouth extending between the jaws (1,2). The protective nose (4) can evade a restoring force (7). One of the jaws (1) embodies an avoidance chamber (5). A bottom (6) of the avoidance chamber (5) supports the end of a spring (7). An end of the spring (7) engages the protective nose (4).

Abstract: A device for cutting workpieces is in the form of pliers. One plier arm carries on an operating-end section an interchangeable blade. The blade can be moved toward and engages against an anvil of the operating-end section of the other plier arm by moving the plier arms toward one another. In order to improve the handling of such a cutting device, each plier arm includes a handle section. One of the two handle sections forms a selectively closeable storage chamber for storing spare blades. The chamber is in a core part of one of the plier arms and is covered and closed by a handle shell.

Abstract: A combination adjustable height bearing stand and roller platform assembly is provided which can be fixed at a pre-adjusted height. The combination bearing stand and roller assembly includes two pairs of legs with each pair of legs being pivotally connected together at a joint connection so that the legs can be brought from a parallel position used for storage to an angled position. The corresponding legs of the two pairs of legs are connected by cross-connectors. The legs are tubular and one leg of each pair of legs receives a height-adjustable support which can be secured at a pre-selected height by a fixing element. The top ends of the height-adjustable support are connected to fastening elements which, in turn, are pivotally connected to two carriers which support a platform assembly. Both the platform and bearing stand legs are pivotable between a collapsed and parallel storage position to an angled and horizontal position respectively using a single motion.

Abstract: A combination adjustable height bearing stand and roller platform assembly is provided which can be fixed at a pre-adjusted height. The combination bearing stand and roller assembly includes two pairs of legs with each pair of legs being pivotally connected together at a joint connection so that the legs can be brought from a parallel position used for storage to an angled position. The corresponding legs of the two pairs of legs are connected by cross-connectors. The legs are tubular and one leg of each pair of legs receives a height-adjustable support which can be secured at a pre-selected height by a fixing element. The top ends of the height-adjustable support are connected to fastening elements which, in turn, are pivotally connected to two carriers which support the plurality of rollers of the roller platform assembly. Both the platform and bearing stand legs are pivotable between a collapsed and parallel storage position to an angled and horizontal position respectively using a single motion.

Abstract: A Forstner bit including a cutter having radial major cutting edges, circumferential cutting edges and a shank adapted to be clamped in a chuck. The cutter is threadably attached to the shank by a rear stem of the cutter being accommodated in a threaded hole provided in the shank. The cutter is formed as a monolithic casting fashioned of a precision-casting steel alloy, with the cutter being subjected to additional grinding only along the major cutting edges and the circumferential cutting edges.

Abstract: A device for cutting truncated dowels from a board, with a device including a one-piece cutting body shaped as a hollow cylinder and having a concentric clamping shank. The cutting body is provided with only one recess which forms a knife edge, with the recess opening toward a front of a cutting body and merging into a wider dowel ejection opening. The cutting body has an inside annular cutting edge which determines the larger outside diameter of the truncated dowel to be cut and from which the knife edge originates. The inside circumferential surface of the jacket tapers conically toward the clamping shank, and the knife edge is inclined obliquely inwardly in accordance with the conicity of the inside circumferential surface.