Abstract: Device for locking two adjacent sections (1, 2) of a roll of paper (3) placed on the sides of a cutting section plane (4) defined by the movement of a cutting blade (5) of a cutting-off machine (M), comprising a pair of clamping devices (6, 7) configured to be able to assume an unlocking configuration with a locking configuration of respective sections (1, 2) of the roll (3); at least a first actuator (8) which can be operated on command to pass said clamping devices from the unlocking configuration to the locking configuration of the respective sections (1, 2), and vice versa; at least a second actuator (10) connected to the clamping devices (6, 7) and configured to perform a movement of reciprocal distancing of the clamping devices in a locking configuration with respect to said cutting section plane (4); means of inhibition (11) of the reciprocal moving away of the clamping devices active during the cutting advancement of the blade (5) through the roll (3); and activation means (12) of the second actuator

Abstract: A clamping and cutting apparatus for a conveyor belt is provided. The apparatus includes upper and lower elongate members between which the belt is to be clamped. A clamping mechanism has a screw drive mechanism mounted to the upper member and an end linkage assembly which are operable to generate a more rapid clamping operation of the elongate members on the belt. The upper elongate member can be releasably latched to the lower elongate member for quick connection and removal therefrom. A cutting blade of the apparatus is preferably provided with upper and lower guides to increase the rigidity thereof for increasing cutting accuracy and allowing thicker belts to be cut therewith without increasing blade thickness.

Abstract: An apparatus for cutting a corrugated metal sheet is disclosed. The apparatus includes a table, a clamp assembly, and a cutting tool. The clamp assembly has a lower frame and an upper frame. A lower vibration absorbing pad is supported by the lower frame, and an upper vibration absorbing pad is secured to the upper frame such that the upper vibration absorbing pad faces the lower vibration absorbing pad. In an open position the lower and upper vibration absorbing pads are separated to permit the corrugated sheet metal to be positioned therebetween and in a closed position the corrugated metal sheet is clamped between the lower and upper vibration absorbing pads with at least one of the lower and upper vibration absorbing pads substantially conforming to the contour of an adjacent surface of the corrugated metal sheet.

Abstract: A plunger assembly is provided for gripping blanking material or blanking scrap during a blanking operation. The plunger assembly includes a base member; a pivoting gripper or plunger member, and a pair of connecting legs connecting the pivoting gripper member to the base member. The assembly is adapted to pivot with respect to at least one of the base member and the pivoting gripper member through a predetermined pivot angle range for changing a distance between the base member and the pivoting gripper member. By pivoting, a folding and unfolding of the plunger assembly can be effected during a blanking operation.

Abstract: The target apparatus for positioning a drilling tool with respect to a drilling channel to be created in a bone consists of a target hook and a guide arm which is releasably connected to this and on which there is arranged a receiver for the drilling tool, and a guide path in the form of a laterally through-going open groove for the guide arm. The guide arm may be displaced and fixed in the guide path. A simple assembly and disassembly of the apparatus is achieved in that the guide arm on the side of the apparatus is applied into the guide path through the groove opening and reversely, by lifting away out of the groove, may be separated from the target hook.

Abstract: A rotating log saw clamp having a clamp infeed section and a clamp outfeed section located adjacent a log saw blade. The clamp infeed section and clamp outfeed section are coupled for rotation together with the log during sawing of at least a portion of the log by the log saw blade.

Abstract: The food holder has two vertical plates, mounted on a base vertically and parallel to each other. The two plates create a gap between the plates where food is held. Knife guides with vertically extending guide slits are provided at both ends of the gap. The two vertical plates are connected to the base in a manner allowing their translational motion in directions which can change the gap size. Additionally, a centering mechanism insures the distance moved by each plate is equal.

Abstract: A rotating log saw clamp having a clamp infeed section and a clamp outfeed section located adjacent a log saw blade. The clamp infeed section and clamp outfeed section are coupled for rotation together with the log during sawing of at least a portion of the log by the log saw blade.

Abstract: A locking fence for a power tool such as a chop saw, or for a work surface of a workbench, is capable of being moved to a selected location on the chop saw base or work surface and oriented at a selected angular orientation relative to the chop saw blade. The fence is locked simultaneously in such location and orientation when an operator rotates a cam actuator to lift a first clamping member away from the fence, which in turn draws a second clamping member into clamping engagement with the underside of a workpiece support of the base, and which further forces a cam portion of the actuator against the fence. No tools are required to lock or unlock the fence. The fence defines an arcuate slot for enabling the angular orientation to be adjusted. The arcuate slot is maintained in juxtaposition to a slot formed in the work surface for enabling movement of the fence to its selected location on the workpiece support or work surface, by linking screws linking the slots.

Abstract: A clamp is shown for holding a log of paper while a log-saw or cutting machine cuts shorter lengths of toilet-paper rolls or rolls of kitchen towels or similar all-purpose wipers from the log. The clamp is arranged adjacent a seat or support for the log as well as adjacent a cutting blade. The clamp includes, for each log seat, and on opposite sides of a cutting plane (T--T) through which the blade passes, a pair of adjustable and symmetrically arcuate strips (212, 214) secured to supports (207, 209). The strips are of flexible material with end portions which tend to spring outwardly. A strap (222) is anchored to a retention holder (224) and an adjustment holder (246). The strap surrounds the pair of strips (212, 214) and can change the arrangement thereof. A drive (240, 262) simultaneously adjusts both the effective length of the strap (222) and the symmetrical angular orientations of two rods (228A, 228B) and, consequently, of two cradles (218) on which the strips are supported.

Abstract: The pressure-retaining device or clamp acts on the roll or log adjacently to the cutting plane and may be adapted to various diameters of the material being processed; for each path of advance of the rolls or logs (B) and on each side of the cutting plane, it comprises: a pair of symmetrically curved flexible strips (12, 14) projecting from enclosing supports (9A, 10; 7A, 10) and having end portions able to move according to the variation in the diameter of the roll, and a strap (22) fixed to elastic return holders (24A) and adjusting holders, said strap surrounding the pair of strips (12, 14) so as to vary their geometry in relation to the variation in the diameter of the material being processed.

Abstract: A paper-cutting machine has a board which is provided at one end thereof with a rail support for supporting a rail. One end of the rail is pivotally supported by the rail support through a pin. Thus, the other end of the rail is movable up and down about the pin. A slider is movably provided on the rail. A rotatable cutter blade is attached to the slider. A paper holder is resiliently supported on the reverse side of the rail through a spring. A hook is attached to the distal end of the rail. The distal end of the rail is fixedly fitted to a guide member provided on the board. The rail support is provided with guide pins for pressing both side surfaces, respectively, of the rail by means of resilient force from respective springs. The slider is mainly comprised of a cutter blade-side slider body, a slider body and a cutter blade holder. The cutter blade holder is equipped with the cutter blade which is rotatably attached to a slide portion of the cutter blade holder.

Abstract: Elongated metal stock is advanced intermittently past punch presses which form holes in the stock when the stock dwells. A shear cuts off successive leading end portions of the stock and forms the stock into short pieces. The same machine is capable of running both angle iron and flat stock without making any significant conversons to the machine between runs. This is achieved through the provision of a feed mechanism and clamping units which are adapted to feed and clamp flat stock as well as angle iron.

Abstract: A machine is described for cutting large diameter wound logs of paper or similar web material such as toilet tissue and the like into relatively small discs for use specially in institutional dispensers. The machine includes a cradle and transport means for inserting a large diameter log of paper into a gripper which holds the log securely and stationary while a band saw cuts the discs of paper from the log. The gripper includes a ring through which the log passes, said ring including a plurality of radially movable plungers which support and retain the log within the ring while the band saw is cutting a disc from the log. The mechanism also includes an automatic guide and sharpening station for maintaining the sharpness of the band saw and, furthermore, includes a support and discharge mechanism for removing the discs of paper from the gripper.

Abstract: The present invention relates to a band saw machine having the capability to produce finished piece parts by employing a rotatable collet and an index vise to rotate and longitudinally position the piece part, a band saw blade positioned in a blade twist assembly capable of making straight, angular, and arcuate cuts on the work piece, and a motor means to move the saw blade perpendicular to the work piece, all under the direction of a pre-programmed computer control.

Abstract: Method and apparatus for cutting a cylindrical material formed of silicone or the like which is an original material to produce semiconductor devices, using a rotary blade. In the cutting method, the base end side of the cylindrical material is fixed and at the same time, before the cutting of the cylindrical material is started, the cutting side of the cylindrical material is also fixed according to the shape thereof. The cutting is performed while maintaining such fixed conditions until the cutting is completed.

Abstract: A sawing machine for cutting workpieces such as panels or packs of panels (P) comprises a horizontal workpiece support table (A) having a straight longitudinal slot (L) defining a cutting line, a sawing tool (S) movable along the cutting line and a longitudinal pressure device arranged above the workpiece support table and extending along the entire length of the cutting line. The pressure device consists of two pressure beams (1, 1') arranged at both sides of the cutting line, parallel thereto. Each beam can be raised and lowered independently of the other in relation to the workpiece support table in order to clamp thereon the workpiece to be sawed or to contact the surface of the support table.

Abstract: A device for shifting packs (P) of panels along the workpiece support table (L) of a sawing machine. The top surface of a stack of panels (P') comprises a pair of levers (1, 2) hingedly mounted on a motorized carriage (C). The first lower lever (1) frontally contacts the side of the pack (P) by its forward end defining a vertical pushing front (13) and has a lower jaw (17) acting on the underside of the edge of the pack (P), while a second, upper lever (2) forms, with its forward end (20, 21), the upper jaw acting on the top side of the edge of the pack (P). The second lever is actuated for gripping the edge of the pack between the two jaws (17, 20, 21).

Abstract: The pressure beam is adapted to be used in sawing machines for cutting workpieces such as panels or packs of panels (P), of the type comprising a workpiece support table (L) having a straight longitudinal slot defining a cutting line and a sawing tool (Z) movable along the cutting line. The pressure beam is arranged above the workpiece support table (L), extends along the whole length of the cutting line and consists of two pressure elemments (R, R') arranged at both sides of the cutting line, parallelly thereto. Each pressure element (R, R') can be raised and lowered independently of the other and laterally moved by slides to vary the distance of the pressure elements (R, R') with respect to the cutting line located between them.

Abstract: A workpiece clamping apparatus for machine tools comprises a frame; a rocking sleeve member, rockably fixed to the frame; a cylindrical member, slidably inserted in the rocking sleeve member, so as to move therein; a rod member, inserted in the cylindrical member, so as to project therefrom; a swinging holding member, rockably provided at one end of the rod member; and an upper clamping jaw and a lower clamping jaw, both connected to the swinging holding member, for gripping an end of a workpiece.

Abstract: A clamping apparatus (3) for holding a workpiece (W) between an upper punching tool (19) and a lower punching tool (21) in a machine (1). A frame (33) attaches the clamping apparatus (3) to the machine (1). The clamping apparatus (3) comprises an upper clamp (61) and a lower clamp (57), the latter pivotably cooperating with the upper clamp (61) in order to secure the workpiece (W). The clamping apparatus (3) also comprises a plate member (51) and rods (49) and (75). These rods (49) and (75) are mounted in the frame (33) in a direction perpendicular to the workpiece (W). The lower end of the rods (49) and (75) are attached to the lower clamp (57) and the upper end of the rods (49) and (75) are attached to the plate member (51). A spring (83) is arranged between the lower clamp (57) and the plate member (51) for the purpose of maintaining the lower clamp (57) and the plate member (51) in horizontal orientation whenever the lower clamp (57) collides with the lower punching tool (21).

Abstract: Apparatus for cropping the connecting leads of electrical components assembled on a circuit board having locating holes therein through which the leads have been inserted, which apparatus comprises a plate provided with holes at spacings corresponding to the holes in the circuit board against which the circuit board is placed, the leads of the electrical components extending through the aligned holes in the circuit board and plate; a first structure adapted to support the plate and having a cutter means movable to crop the portions of the leads of the components extending through the holes in the plate; and a second structure carrying a multiplicity of substantially parallel individually axially displaceable rods which are movable into engagement with components on a circuit board placed on said plate to hold the components in position on the circuit board, said first and second structures being movable relative to one another whereby movement of one of the structures towards or away from the other is effecti